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IR2117PBF - 600V High-Side Gate Driver IC | Infineon
The Infineon IR2117PBF is a 600 V high-side gate driver IC designed for driving power MOSFETs and IGBTs in non-inverting configurations, housed in an 8-pin PDIP through-hole package. It delivers 250 mA source and 500 mA sink output currents using Infineon's proprietary HVIC and latch-immune CMOS technology, supporting switching frequencies suitable for high-speed power conversion. The floating channel is designed for bootstrap operation up to +600 V, enabling it to drive N-channel MOSFETs or IGBTs in high-side configurations. A high-side gate driver is a specialized integrated circuit that level-shifts a low-voltage logic control signal (typically 3.3 V or 5 V) up to the much higher source voltage of a high-side power switch (often 200 V to 600 V). High-side drivers sit at the top of the power management hierarchy, beneath gate drivers and above MOSFET/IGBT discrete semiconductors, allowing low-voltage microcontrollers and DSPs to safely control high-voltage power stages in switching converters, motor drives, and class-D amplifiers. Key specifications include a gate drive supply range of 10 V to 20 V, 200 ns typical propagation delay, 130 ns rise time, and 65 ns fall time. The device features CMOS Schmitt-triggered logic inputs with internal pull-down, undervoltage lockout (UVLO) for safe startup, and dV/dt immunity for reliable operation in noisy switching environments. These parameters make the IR2117PBF well-suited for SMPS half-bridge and high-side switch topologies. The IR2117PBF uses a monolithic HVIC process that integrates level-shifting logic and the high-side output buffer stage on a single die. This architecture minimizes propagation delay mismatch and reduces external component count, while the latch-immune CMOS construction provides robustness against negative voltage transients on the floating supply pin that commonly occur in inductive load switching. Typical applications include switched-mode power supplies (SMPS), half-bridge DC-DC converters, motor drive inverters, electronic ballasts for fluorescent and LED lighting, and high-side switch drivers in industrial automation. The wide 600 V floating channel rating makes it especially useful in 230 V / 400 V AC-line applications where ample voltage headroom is needed for inductive kick-back. When designing with the IR2117PBF, pay careful attention to bootstrap capacitor sizing: the capacitor must supply sufficient charge to keep the high-side supply rail above the UVLO threshold during the worst-case on-time of the switching cycle. Use a fast-recovery bootstrap diode and a small ceramic bypass capacitor placed close to the Vb and Vs pins to minimize switching noise coupling. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single manufacturer datasheet, making it a one-stop reference for engineers evaluating the IR2117PBF for new designs and second-source qualification.
IR2117SPBF - 600V High-Side Gate Driver IC, 8-SOIC | Infineon
The Infineon IR2117SPBF is a 600 V single high-side gate driver IC for power MOSFETs and IGBTs, delivering typical 0.25 A source and 0.5 A sink output currents in an 8-lead SOIC package. It is built on Infineon's proprietary HVIC and latch-immune CMOS technologies, providing ruggedized monolithic construction and compatibility with standard CMOS logic inputs. The device uses bootstrap operation to drive an N-channel power switch in the high-side configuration, fully operational to +600 V. A high-side gate driver IC is a specialized interface between low-voltage control logic (microcontroller, DSP, or PWM controller) and a power MOSFET or IGBT whose source/emitter is floating and switching between ground and the high-voltage bus. It translates a low-current logic signal into the high-current gate charge pulses required to switch a power transistor in nanoseconds, while providing the level-shifting and isolation needed to drive a transistor whose reference terminal is at the high-voltage rail. In the system hierarchy, the IR2117SPBF sits between the digital controller (PWM IC) and the power stage (MOSFET/IGBT), a critical link in any half-bridge, full-bridge, or push-pull power converter. Key features of the IR2117SPBF include gate drive supply range from 10 V to 20 V, undervoltage lockout (UVLO) for safe startup, CMOS Schmitt-triggered inputs with internal pull-down, and dV/dt immunity. The floating channel tolerates negative transient voltages, enabling reliable operation in hard-switched inductive applications. The non-inverting single-input logic interface simplifies microcontroller connections, while the matched propagation delays help preserve switching symmetry in high-frequency designs. Architecturally, the IR2117SPBF integrates a level-shifter, high-voltage bootstrap diode structure, and a high-pulse-current output buffer stage designed for minimum cross-conduction. The asymmetric source/sink rating (0.25 A source, 0.5 A sink) accelerates turn-off to minimize switching losses, which is particularly valuable in motor drive and SMPS applications where turn-off losses dominate. Typical applications include high-side switch driving in motor control (small BLDC fans, pumps), switch-mode power supplies (SMPS) with synchronous rectification, half-bridge and full-bridge converters, electronic ballasts for lighting, and solenoid/relay drivers. The 600 V rating comfortably supports 240 V AC and 400 V DC bus systems. When designing with the IR2117SPBF, pay close attention to the bootstrap capacitor sizing - insufficient capacitance causes excessive ripple on the floating supply and can trigger UVLO under heavy loads. Place the bootstrap diode and capacitor as close to the IC pins as possible to minimize parasitic inductance, and always respect the maximum VBS of 20 V. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
IR2117STRPBF - 600V High-Side Gate Driver, 8-SOIC | Infineon
The Infineon IR2117STRPBF is a 600V high-side, high-speed power MOSFET and IGBT gate driver IC housed in an 8-pin SOIC (0.154 inch / 3.90 mm width) package. It delivers 0.25 A source and 0.5 A sink peak output current, operates from a 10 V to 20 V gate-drive supply rail, and provides a non-inverting single-channel logic input compatible with standard CMOS logic levels. The proprietary HVIC and latch-immune CMOS process enables a ruggedized monolithic floating channel that is fully operational to +600 V and tolerant to negative transient voltages. A high-side gate driver IC is a specialized power-management semiconductor that level-shifts a low-voltage PWM control signal (typically 0-5 V or 0-3.3 V CMOS) up to a floating high-voltage rail to drive the gate of a high-side N-channel MOSFET or IGBT in a half-bridge or synchronous-rectifier topology. Gate drivers sit beneath the broader hierarchy of power MOSFET drivers, motor drivers, and isolated gate drivers within the power management IC family. By delivering a fast-switching gate charge (typ. 80 ns turn-on / 40 ns turn-off propagation delay) with dV/dt immunity, the IR2117STRPBF enables efficient switching of the high-side switch in switching-mode power supplies, motor inverters, and electronic ballasts. Key specifications include a maximum propagation delay of 125 ns (per the manufacturer datasheet), 250 mA peak source current capability, 500 mA peak sink current for fast turn-off, and an undervoltage lockout (UVLO) that prevents driving the external power switch when the bootstrap supply falls below the safe gate-drive threshold. The single-channel non-inverting input simplifies microcontroller interface, and the SOIC-8 surface-mount footprint with industry-standard pinout enables drop-in substitution across the IR21xx family. The IR2117 utilizes Infineon's HVIC technology combined with latch-immune CMOS, providing monolithic construction with high noise immunity and reliable operation in the presence of fast-switching transients up to 50 V/ns. The bootstrap floating channel architecture eliminates the need for an isolated bias supply on the high-side, reducing BOM count and PCB area in half-bridge and synchronous-buck designs. Typical applications include switch-mode power supplies (SMPS), half-bridge and full-bridge converters, motor-control inverters (for low-voltage BLDC and stepper drivers), electronic ballasts for HID and fluorescent lamps, and Class-D audio amplifiers where a high-side N-channel MOSFET or IGBT is required. The wide VCC range and CMOS-compatible input also make it a popular choice for driving the high-side switch in 110/220 VAC line-rectified DC bus systems up to 600 V. When designing with the IR2117STRPBF, ensure that the bootstrap diode and capacitor values are correctly sized for the switching frequency and gate charge of the external MOSFET. Use a fast-recovery diode (UF4007 or better) and a low-ESR ceramic or tantalum bootstrap capacitor; undersized components cause gate-drive voltage droop and shoot-through. The VCC pin should be decoupled with a 0.1 uF ceramic capacitor placed as close as possible to the IC. Negative transients on the VS pin must be clamped with a low-impedance path back to ground to avoid exceeding the absolute maximum ratings. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a faster path from selection to layout.
IR2121PBF - 5V Low-Side Gate Driver with OCP | Infineon
The Infineon IR2121PBF is a high-speed, single low-side gate driver IC for power MOSFETs and IGBTs, integrating programmable over-current limiting protection in an 8-pin PDIP through-hole package. It delivers 1.6 A typical source and 3.3 A typical sink peak output currents from a 12 V to 18 V supply, and uses latch-immune CMOS technology for ruggedized monolithic construction. A gate driver IC is a power-management semiconductor that sits between a low-power control signal (typically from a microcontroller or PWM controller) and a power switching device (MOSFET or IGBT). Its primary role is to translate a logic-level command into a high-current drive that can rapidly charge and discharge the gate capacitance of the power switch, thereby minimizing switching losses and preventing shoot-through. Within the broader hierarchy, gate drivers belong to power management ICs, then to PMIC gate drivers, and finally to the semiconductor family. Key features include a current-limit programming input that allows the system designer to set the OCP threshold with an external resistor, an open-drain FAULT output that pulls low when an over-current event is detected and latches the driver off, CMOS/LSTTL-compatible logic inputs down to 2.5 V, and a high-pulse-current buffer output stage designed for minimum cross-conduction. Typical propagation delay is 150 ns, allowing the part to operate efficiently at PWM frequencies up to several hundred kilohertz. The IR2121PBF is built on Infineon's proprietary high-voltage CMOS process, which integrates the level-shifting, protection logic, and output driver stages onto a single die. The output stage uses a complementary push-pull topology with controlled rise and fall times to limit EMI while still providing the in-rush current needed to switch large gate charges. The OCP comparator monitors the voltage across an external current-sense resistor and, when the threshold is exceeded, the FAULT pin is asserted and the gate output is latched low until the input is cycled. Typical applications include low-side switching of IGBTs and power MOSFETs in motor drives, solenoid drivers, DC-DC converters, lighting ballasts, and general-purpose switch-mode power supplies where fault reporting is required. The wide supply range also makes it suitable for industrial 24 V bus-derived rails. A critical design consideration when using the IR2121PBF is to choose the current-sense resistor value carefully so that the OCP trip point sits comfortably above the maximum normal load current yet well below the saturation limit of the switching device. Also ensure the FAULT pin is pulled high with a pull-up resistor, since it is an open-drain output. This page consolidates distributor pricing, pin-compatible drop-in alternatives, and practical design notes beyond what is captured in the manufacturer datasheet alone.
IR21271SPBF - 600V High-Side Current-Sensing Gate Driver | Infineon
The Infineon IR21271SPBF is a single-channel, high-voltage, high-speed power MOSFET and IGBT gate driver with integrated current sensing, housed in an 8-pin SOIC package. It delivers 0.25 A source and 0.5 A sink gate-drive current, supports fully operational voltages up to +600 V on the floating channel, and tolerates negative transient voltages on the VS pin. The IR21271SPBF is the lead-free (PbF) variant of the IR21271S family. A gate driver is a power-management IC that sits between a low-power controller (microcontroller, DSP, FPGA, or analog PWM block) and a high-power switching transistor (MOSFET or IGBT). Its job is to translate a logic-level command into a high-current drive signal capable of rapidly charging and discharging the gate capacitance of the switching device. Within the broader IC hierarchy, gate drivers belong to power management -> MOSFET/IGBT drivers -> high-voltage gate drivers, and they enable the clean, low-loss switching that defines modern switch-mode power supplies, motor controllers, and induction heating inverters. The IR21271SPBF's key differentiator is its built-in current-sensing capability, eliminating the need for an external current-sense amplifier in many designs. Other headline parameters include a logic-input threshold compatible with 3.3 V CMOS or LSTTL outputs, application-specific gate-drive ranges (20 V for motor drive on the related IR2127/IR2128, lower for automotive variants), dV/dt immunity from the proprietary HVIC and latch-immune CMOS process, and a floating channel designed for bootstrap operation. The 8-pin SOIC footprint allows compact PCB layouts. Architecturally, the device uses Infineon's proprietary HVIC technology to integrate a level-shifter, latch-immune CMOS logic, and a push-pull output stage on a monolithic die. The high pulse-current buffer stage minimizes cross-conduction, and the floating channel can drive an N-channel power MOSFET or IGBT in high-side or low-side configurations operating up to 600 V. The current-sensing output provides feedback proportional to the drain current. Typical applications include three-phase motor drives, automotive ignition systems, switch-mode power supplies, induction heating, and high-voltage DC-DC converters. Its 600 V rating and current-sense output make it especially suitable for variable-frequency drives and switched-mode power topologies where overcurrent protection is required. When designing with the IR21271SPBF, ensure the bootstrap capacitor is sized correctly for the switching frequency and gate charge, and verify that the VS pin's negative-transient tolerance is not exceeded during switching events. A small RC filter on the current-sense output improves noise immunity in motor-control loops. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the IR21271SPBF - information not consolidated in the manufacturer datasheet.
IR21271STRPBF - 600V Current-Sense High-Side Driver | Infineon
The Infineon IR21271STRPBF is a 600 V tolerant, current-sensing single-channel gate driver IC housed in an 8-pin SOIC (IR21271S) package with Pb-free lead finish. It integrates a high-side floating gate driver with built-in overcurrent protection, accepting logic-level PWM inputs and driving an external MOSFET or IGBT in high-side, low-side, or half-bridge configurations with non-inverting input polarity. A gate driver IC is a power-management semiconductor that translates low-current logic signals from a microcontroller or DSP into the high-current drive required to switch power MOSFETs and IGBTs. Gate drivers sit hierarchically between the controller (digital domain) and the power stage (analog switching domain) in the signal chain: controller -> gate driver -> power MOSFET/IGBT -> load. They provide level shifting, drive strength, and protection features that logic outputs alone cannot supply. Key specifications include a 9 V to 20 V supply range (VCC), 600 V high-side offset voltage, 250 mA source / 500 mA sink peak output current, 200 ns typical propagation delay, and integrated current-sense comparator with shutdown logic. The device is dV/dt immune and tolerant of negative transient voltages on the high-side rail, which simplifies layout in motor-drive and SMPS designs. Internally the IR21271 uses a level-shifted high-side channel with an integrated bootstrap structure, plus a transconductance-style current-sense amplifier with a programmable trip threshold set via the CS pin. This lets designers implement cycle-by-cycle current limiting without an external comparator, reducing BOM cost and PCB area in compact motor-control and solenoid-drive applications. Typical applications include brushless DC (BLDC) motor drives, three-phase inverter low-side legs, solenoid and valve drivers, and switched-mode power supply primary-side switches where integrated current feedback simplifies the control loop and reduces external part count. Industrial 24 V bus and HVAC blower systems are common deployment scenarios. When designing with the IR21271, the bootstrap capacitor value and VCC decoupling must be sized for the switching frequency; insufficient bootstrap capacitance causes high-side UVLO tripping. Place the CS-pin filter network close to the IC to prevent false tripping from switching noise coupled into the sense trace. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for sourcing and substituting the IR21271STRPBF.
IR2127SPBF - 600V High-Side Gate Driver | Infineon | 8-SOIC
The Infineon IR2127SPBF is a single-channel, high-voltage, high-speed power MOSFET and IGBT gate driver in an 8-pin SOIC package, featuring integrated overcurrent protection and current-sensing feedback. It is rated for fully operational use up to +600 V bus voltage, tolerates negative transient voltages, and is immune to high dV/dt, making it suited for rugged switching environments. Logic input is compatible with standard CMOS or LSTTL outputs down to 3.3 V, allowing direct connection to modern microcontrollers and DSPs. The proprietary HVIC and latch-immune CMOS technologies enable ruggedized monolithic construction that reduces external component count and improves long-term reliability. A gate driver IC is a power-management semiconductor that sits between a low-power control signal (from a microcontroller, DSP, or analog controller) and the gate of a high-power switching transistor such as a MOSFET, IGBT, or GaN HEMT. Its primary function is to provide the high peak source/sink currents and level-shifting required to switch the power transistor quickly and efficiently. Gate drivers fall within the broader category of power management ICs and are essential building blocks in motor drives, switch-mode power supplies (SMPS), and Class D audio amplifiers. Compared with discrete gate-drive optocouplers or pulse transformers, monolithic HVIC drivers like the IR2127SPBF offer smaller PCB area, faster propagation delay, and built-in protection features. Key features of the IR2127SPBF include a 0.5 A peak gate-drive sink current, 150 ns typical propagation delay, an integrated overcurrent comparator with fault output, dedicated current-sense amplifier input, and wide VCC range of 10 V to 20 V. The device operates across -40 °C to +125 °C and offers a typical rise time of 80 ns into a 1 nF load, enabling MHz-class switching frequencies with low switching losses. The built-in DESAT-style overcurrent detection simplifies implementation of short-circuit protection in inverter and motor-control stages. Architecturally, the IR2127SPBF combines a level-shift high-voltage stage, a current-sense comparator with adjustable blanking, a logic input stage with hysteresis, and an output driver capable of 0.25 A source / 0.5 A sink. The fault latch and timing-resistor programmable shutdown delay allow the designer to tune the protection response for IGBT desaturation events. The integrated bootstrap-style high-side structure (when properly powered through a floating supply) supports high-side switching up to 600 V without external level-shift isolation components. Typical applications include low-power motor drives, switched-mode power supplies (SMPS), uninterruptible power supplies (UPS), high-side switches in DC/DC converters, and Class D audio amplifiers. The compact 8-SOIC footprint simplifies layout in space-constrained designs while still delivering industrial-grade voltage headroom. When designing with the IR2127SPBF, ensure that the bootstrap or floating supply capacitor is sized correctly for the switching frequency and gate charge of the driven device, and that the current-sense filter network follows Infineon reference designs for clean DESAT detection. The fault output should be wired back to the controller to enable safe shutdown of downstream stages during short-circuit events.
IR2127STRPBF - 600V High-Side Gate Driver IC | Infineon
The Infineon IR2127STRPBF is a 600 V tolerant single-channel high-side gate driver IC designed to drive IGBTs and power MOSFETs in switching power-conversion applications, supplied in an 8-pin SOIC package and shipped on a 7-inch tape-and-reel carrier. The device accepts a non-inverting logic-level PWM input and converts it to a floating gate-drive output capable of pulling the gate up with 250 mA source current and pulling it down with 500 mA sink current, allowing direct switching of large IGBTs and MOSFETs without intermediate buffers. A high-side gate driver IC is a category of power management semiconductor that level-shifts a low-voltage control signal referenced to logic ground to a high-voltage floating rail referenced to the source of a switching transistor. This level-shift is essential in half-bridge and full-bridge topologies where the high-side transistor's source pin swings between the DC bus and ground at the switching frequency. The IR2127 family is part of the broader gate-driver hierarchy: gate driver -> driver IC -> power management IC -> semiconductor, and shares design heritage with Infineon's broader high-voltage floating-channel driver portfolio. Key parametric features include a continuous operating offset voltage tolerance up to +600 V, dV/dt immunity across the high-side well, tolerance to negative transient voltages, and an integrated current-sense comparator that allows cycle-by-cycle over-current protection without an external sense amplifier. The supply range is 12 V to 20 V, propagation delay is approximately 200 ns, and the part is rated for operation across the -40C to +125C automotive temperature range with a Pb-free (PBF) matte-tin finish. The IR2127 uses a proprietary high-voltage level-shifter combined with a current-sense comparator. The floating channel is built on Infineon's SOI-based high-voltage BCD process, which provides the dV/dt immunity that older junction-isolated drivers lacked. The internal current-sense comparator eliminates one external op-amp in motor-drive and SMPS current-limit loops, saving PCB area and improving loop bandwidth. Typical applications include three-phase motor drives, half-bridge converters, solenoid and coil drivers, high-side switches in industrial automation, and switch-mode power supplies where a high-side transistor must be switched from a low-voltage MCU. The IR2127STRPBF is also widely used in class-D audio amplifiers and battery management systems requiring a robust floating gate driver. When designing with this device, ensure the bootstrap capacitor on the Vb-Vs rail is sized for the worst-case duty cycle and gate charge, and add a low-ESR bypass capacitor directly on the Vcc pin. For applications exceeding 600 V, add external transient-suppression diodes across Vb-Vs to protect against avalanche breakdown of the floating well. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
IR2128SPBF - 600V High-Side/Low-Side MOSFET/IGBT Driver | Infineon
The Infineon IR2128SPBF is a single-channel current-sensing high-voltage, high-speed power MOSFET and IGBT gate driver with inverting logic input, housed in an 8-pin SOIC package. It features a 0.5A gate drive output, 600V high-voltage rating, proprietary HVIC and latch-immune CMOS technology for ruggedized monolithic construction, and an application-specific gate drive range of 20V for motor drive (IR2128 variant). The IR2128SPBF operates from a 10V-20V supply with 150ns typical propagation delay, and its logic input is compatible with standard CMOS or LSTTL outputs down to 3.3V logic levels. A gate driver IC is a power management semiconductor that translates low-power control signals from a microcontroller or analog controller into the high-current, high-voltage drive signals required to switch discrete power transistors such as MOSFETs and IGBTs. In the system hierarchy, a gate driver sits between a logic-level controller (MCU, FPGA, analog PWM controller) and the power stage (MOSFET, IGBT, SiC, GaN switch), and is itself a member of the broader power management IC family that includes voltage regulators, supervisors, and motor drivers. The IR2128SPBF belongs specifically to the high-side/low-side (half-bridge) driver subcategory. Key features include dV/dt immunity, negative transient voltage tolerance, fully operational capability to +600V, and integrated current sensing. The 8-pin SOIC package provides a compact footprint suitable for space-constrained power designs. The inverting input logic simplifies implementation in systems where the controller output is active-high but the power stage requires active-low drive signals. The IR2128SPBF utilizes Infineon's proprietary HVIC (High-Voltage Integrated Circuit) process technology with latch-immune CMOS construction. This combination enables monolithic integration of high-voltage level-shifting with low-voltage logic on a single die, eliminating the need for external bootstrap components in some configurations. The current-sensing capability allows the driver to monitor load current directly, simplifying protection circuit design in motor drive and power conversion applications. Typical applications include motor drive circuits, automotive power systems, switch-mode power supplies (SMPS), and high-voltage DC-DC converters. The wide operating voltage range and high-voltage tolerance make it particularly suitable for industrial motor control, where switching transients commonly exceed 500V. The automotive variant (IR21271) extends the gate drive range for IGBT applications in vehicles. When designing with this device, ensure proper PCB layout to minimize parasitic inductance in the gate drive loop. Use a low-impedance gate return path and place the driver as close to the power switch as possible. The supply bypass capacitor must be located within 5mm of the VCC pin to suppress switching transients. This page synthesizes distributor pricing, drop-in SOIC-8 alternatives, and practical design notes not found in the standalone manufacturer datasheet.
IR2128STRPBF - 600V High-Side Gate Driver IC | Infineon
Infineon IR2128STRPBF is a 600 V single-channel high-side gate driver IC for IGBTs and MOSFETs, delivering 0.25 A source and 0.5 A sink drive currents in an 8-pin SOIC (0.154", 3.90 mm width) package. It operates from a 12 V to 20 V gate-drive supply with logic input compatible with 3.3 V CMOS/LSTTL. Per the Infineon datasheet, the part is fully operational to +600 V with dV/dt immunity and tolerates negative transient voltages at the VS node. The IR2128STRPBF includes over-current protection with a current-sense comparator and an open-drain fault output, simplifying protection implementation in motor-control and power-conversion designs. A high-side gate driver is a specialized power-management IC that level-shifts a low-voltage logic signal up to a floating high-voltage rail, allowing a low-side controller (such as a 3.3 V MCU) to switch an N-channel power MOSFET or IGBT placed on the high side of a half-bridge. High-side drivers sit inside the broader hierarchy of gate drivers -> power management ICs -> PMIC -> semiconductor, and they are indispensable in bridge-tied converters, three-phase inverters, and any topology where the low-side switch cannot deliver the required load current or voltage swing. Bootstrap supply architecture, used by the IR2128STRPBF, lets a single supply rail feed both low-side and high-side switch gates without a dedicated isolated DC/DC converter. Key features include a 200 ns typical propagation delay, integrated undervoltage lockout (UVLO) for the logic and gate-drive rails, current-sense comparator with programmable threshold, and a fault indicator output that pulls low to flag over-current events to the host controller. The CMOS/HVIC latch-immune process gives the IC monolithic robustness against dv/dt-induced false triggering on the high-side return (VS) node. Typical applications include general-purpose variable-frequency drives (VFD), IGBT/MOSFET modules in industrial inverters, three-phase induction-motor half-bridges (one IR2128STRPBF per phase), DC-DC buck/boost converters with high-side synchronous rectifiers, and switched-mode power supplies (SMPS) needing a single high-side switch. The 600 V rating covers 230 VAC and 400 VAC rectified rails with ample margin. Design considerations: keep the bootstrap diode and capacitor close to the VB-VS pins to minimize charge transients; a 1N4148 plus 1 uF ceramic cap is typical. Verify the VS-node dv/dt does not exceed the dV/dt rating during commutation, otherwise the floating-well can inject shoot-through. The current-sense resistor and RC filter at the CS pin set the over-current trip threshold.
IR2130STRPBF - 600V 3-Phase Gate Driver | Infineon | SOIC-28
The Infineon IR2130STRPBF is a 600 V high-voltage, high-speed three-phase gate driver IC for power MOSFETs and IGBTs, housed in a 28-pin SOIC Wide-Body (SOIC-28WB) package. It integrates three independent high-side and three independent low-side driver channels with typical 0.25 A source and 0.5 A sink gate-drive currents, and operates from a gate-drive supply (VCC) of 10 V to 20 V with logic inputs compatible with CMOS/LSTTL down to 2.5 V. A gate driver IC is a power-management semiconductor that level-shifts low-voltage control logic signals to the high-voltage domain required to switch the gates of power MOSFETs or IGBTs in bridge topologies. In the broader system taxonomy, the IR2130 belongs to the gate driver IC family, which sits hierarchically below power management ICs and above discrete half-bridge driver circuits; it is the critical interface between a microcontroller/MCU's PWM outputs and the high-current switching stage of motor drives, inverters, and SMPS. The IR2130STRPBF uses Infineon's proprietary HVIC (High-Voltage Integrated Circuit) technology, enabling a ruggedized monolithic construction fully operational to +600 V and tolerant to negative transient voltages on the phase node (dV/dt immune). It includes undervoltage lockout (UVLO) for all six channels, matched propagation delays across all channels for symmetric switching, a typical dead-time of 2.5 microseconds, and over-current shutdown that turns off all six outputs simultaneously while asserting a fault flag. An integrated ground-referenced operational amplifier provides analog feedback of bridge current through an external sense resistor. Typical applications include three-phase variable-frequency drives (VFDs) for AC induction and PMSM motors, brushless DC (BLDC) motor controllers in appliances, industrial servo drives, uninterruptible power supplies (UPS), and solar inverters. The wide 600 V rating also supports off-line industrial power conversion at 220-240 VAC rectified input. When designing with the IR2130STRPBF, always use bootstrap capacitors on each high-side channel and a dedicated bootstrap diode rated for at least the full DC bus voltage; bootstrap capacitor sizing should target a ripple of less than 10% of VCC under worst-case duty-cycle and switching conditions to prevent UVLO tripping. The current-sense op-amp output should be filtered to reject switching noise. This page synthesizes distributor pricing from DigiKey/Mouser, drop-in alternatives from the IR2130 family and competing gate-driver ICs, and practical design notes that go beyond the manufacturer datasheet.
IR2132SPBF - 600V 3-Phase Half-Bridge Gate Driver | Infineon
The Infineon IR2132SPBF is a 600 V, three-phase half-bridge gate driver IC housed in a 28-pin SOIC wide-body (SOIC-W) package, designed to drive N-channel power MOSFETs or IGBTs in three-phase bridge configurations. The device integrates six gate drive channels (three high-side floating, three low-side referenced) with 0.5 A source/sink drive capability, deadtime insertion, and undervoltage lockout (UVLO) protection for all six channels, delivering a single-IC solution for motor drive and inverter power stages. A gate driver is a power-conversion support IC that translates low-power logic-level PWM signals from a microcontroller or DSP into high-current gate-drive pulses capable of rapidly switching the gates of high-voltage MOSFETs or IGBTs. Within the power-management hierarchy, gate drivers sit one level above the switching transistors and one level below the control IC, providing the current amplification, level shifting, and isolation (in the high-side floating channels) required to operate a half-bridge or full-bridge topology. The IR2132SPBF uses Infineon's proprietary HVIC (high-voltage integrated circuit) process, which monolithically integrates the high-voltage level-shift stage with low-voltage CMOS logic on a single die. Key features include 600 V maximum offset voltage on the high-side floating channels, a gate-drive supply range of 10 V to 20 V, dV/dt immunity, tolerance to negative transient voltage on VS pins, and a typical deadtime of 0.8 us to prevent cross-conduction in the half-bridge legs. Logic inputs are CMOS/LSTTL compatible down to 2.5 V logic. The 'inverting' input variant means that a logic-high on HINx/LINx produces a logic-low on the corresponding gate output (HO/LO), simplifying logic inversion in some PWM schemes. Typical applications include three-phase variable-frequency drives (VFDs) for induction and BLDC motors, servo amplifiers, HVAC compressors, industrial pump drives, and uninterruptible power supplies (UPS). The wide-body SOIC-28 footprint is the industry-standard pinout for this driver family, which simplifies PCB layout and second-sourcing. The SPBF suffix indicates lead-free (PbF), RoHS-compliant, and tube packaging per Infineon's ordering nomenclature. When designing with the IR2132SPBF, use a bootstrap diode and capacitor on each high-side supply (VBx-VSx) sized to refresh the floating supply during the low-side on-time; 1 uF to 4.7 uF ceramic X7R capacitors are typical. Place the bootstrap diode close to the VB pin and use a low-ESR ceramic bypass on VCC. This page synthesizes distributor pricing, parametric comparison with sibling drivers, and practical bootstrap-design guidance not collected in the manufacturer datasheet alone.
IR2132STRPBF - 600V 3-Phase Gate Driver IC | Infineon
The Infineon IR2132STRPBF is a 600 V three-phase gate driver IC with integrated over-current protection, an operational amplifier, and fault reporting, housed in a 28-lead SOICWB (wide-body) surface-mount package. It features typical 0.25 A source and 0.5 A sink gate-drive currents, a 10 V to 20 V gate-drive supply range, and a 675 ns typical propagation delay. The IR2132STRPBF is rated for fully operational +600 V offset voltage and is tolerant to negative transient voltage with dV/dt immunity. A three-phase gate driver IC belongs to the broader category of gate drivers within the power management and motor-control semiconductor family. Gate drivers sit between low-power control logic (such as a microcontroller PWM output) and the high-power discrete switches (IGBTs or power MOSFETs) that actually commutate current in a motor or inverter. The three-phase topology specifically targets brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) drives, where six switches arranged in three half-bridges must be sequenced 120 electrical degrees apart. By integrating six gate-drive channels plus protection and an op-amp onto a single high-voltage die, the IR2132STRPBF eliminates dozens of discrete components and shrinks the inverter footprint. Key features include floating-channel bootstrap architecture that allows the high-side drivers to operate up to 600 V without an isolated supply, undervoltage lockout (UVLO) on all six channels that protects the power stage from insufficient gate-drive voltage, a current-sense op-amp that conditions shunt-resistor feedback for over-current protection, and a FAULT output that latches during a desaturation or OC event. The dead-time is internally fixed at approximately 0.8 µs to prevent shoot-through in the half-bridge. The 28-SOICWB package exposes a thermal pad for improved heat dissipation during continuous switching. Typical applications span industrial variable-frequency drives (VFDs), BLDC/PMSM motor controllers for appliances and pumps, uninterruptible power supplies (UPS), solar micro-inverters, and three-phase AC induction drives. With the global push toward electrification in HVAC, e-mobility, and factory automation, the IR2132STRPBF remains a workhorse part in the 600 V class. When designing with the IR2132STRPBF, observe the bootstrap-capacitor sizing rule that the bootstrap cap must recharge the high-side supply within every switching cycle - typically a 1 µF or larger ceramic is required for motor-PWM frequencies above 15 kHz. Place the VSS bypass capacitor directly between the VSO pin and the COM pin to keep the current-sense path quiet, and keep the OC-trip filter network close to the ITRIP pin to avoid false triggering from switching noise. This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, and practical design notes that complement - but do not replace - the manufacturer datasheet.
IR21531DPBF - 600V Half-Bridge Gate Driver, 8-PDIP | Infineon
The Infineon IR21531DPBF is a 600 V self-oscillating half-bridge gate driver IC housed in an 8-pin PDIP through-hole package, integrating a high-voltage half-bridge driver with a CMOS 555-style front-end oscillator. It is a functional upgrade to the legacy IR2155/IR2151 gate drivers, offering tightened initial deadtime, a low temperature-coefficient deadtime, an integrated 15.6 V Vcc zener clamp, and true micropower startup. The device targets offline ballast and SMPS half-bridge topologies where one IC must generate both gate timing and level-shifted gate drive. A half-bridge gate driver is a power-management IC that produces two complementary gate-drive signals (high-side referenced to the switching node and low-side referenced to ground) for a pair of power MOSFETs or IGBTs arranged in a totem-pole half-bridge. Within the broader taxonomy, the IR21531DPBF sits in the gate-driver subcategory of power management ICs, above which are MOSFET/IGBT drivers, then switching power supply controllers. Its built-in oscillator means the half-bridge timing is set by a single external RT/CT pair, eliminating the need for a separate PWM controller. Key specifications include a 600 V half-bridge rating (allowing direct operation from rectified 230 V AC), typical 0.6 µs internal deadtime, a programmable oscillator, an SD (shutdown) function on the CT pin at 1/6 Vcc, increased undervoltage lockout hysteresis, and matched propagation delays for the high-side and low-side outputs. The exposed GND pin supports the high peak gate currents required to switch MOSFETs in the tens-of-nanoseconds transition region. The architecture is built on Infineon's high-voltage junction-isolation process, which integrates a 600 V level-shift structure on the same die as the 555-style oscillator. This monolithic integration reduces BOM count versus discrete driver + PWM designs and improves timing symmetry between the high-side and low-side channels, which directly lowers shoot-through risk in the half bridge. Typical applications include fluorescent and HID electronic ballasts, low-power SMPS half-bridge converters, CCFL backlight inverters for displays, and motor-drive half-bridge stages. The 600 V rating allows direct rectification of 230 V AC without an additional bootstrap-clamp circuit, and the 1/6 Vcc shutdown input provides an easy interface to a fault or timer circuit. When designing with this part, place a 100 nF (minimum) ceramic bypass capacitor directly on Vcc to keep the internal 15.6 V zener from absorbing fast switching transients, and select RT/CT to give an oscillator frequency well above the audible band (>20 kHz) for ballast applications. The bootstrap diode and capacitor must be sized for the worst-case high-side on-time per switching cycle. This page synthesizes distributor pricing, parametric drop-in alternatives, and PCB-oriented design notes that complement the manufacturer datasheet rather than repeating its tables.
IR21531STRPBF - 600V Self-Oscillating Half-Bridge Driver | Infineon
The Infineon IR21531STRPBF is a 600V self-oscillating half-bridge gate driver IC in an 8-pin SOIC package, designed to drive two N-channel MOSFETs or IGBTs in a half-bridge topology with integrated dead-time control. It features a programmable oscillator frequency set by an external RC network, a high-voltage level-shift stage tolerant of up to 600V on the high-side, a 15.6V internal clamp on VCC, and a 0.6 microsecond built-in dead-time to prevent shoot-through. The integrated bootstrap diode simplifies the high-side supply generation, requiring only an external bootstrap capacitor. A half-bridge gate driver is a power-management IC that converts low-voltage PWM or oscillator logic into two complementary high-current gate-drive signals capable of switching the high-side and low-side switches of a half-bridge. This category sits hierarchically under gate driver -> driver IC -> power management IC -> semiconductor. The self-oscillating variant integrates the timing function, removing the need for an external controller in simple topologies such as electronic ballasts, small motor drivers, and resonant converters. Key features include a 10V to 20V VCC supply range with internal 15.6V zener clamp, source/sink gate-drive currents of approximately 250 mA peak, matched propagation delays for symmetric switching, and CMOS Schmitt-triggered logic input. The internal bootstrap FET and dead-time generator reduce external component count to as few as a resistor, capacitor, and bootstrap capacitor. The 8-pin SOIC surface-mount package offers a small footprint suitable for high-density ballast and driver designs. Internally the device uses a high-voltage junction-isolation level-shifter to translate the low-side oscillator signal across the floating high-side supply rail. This architecture delivers robust high-side switching up to 600V while keeping the logic interface referenced to ground. The matched delay paths ensure balanced turn-on/turn-off timing, which directly translates into low dead-time distortion and predictable EMI behavior in the converter. Typical applications include HID and fluorescent electronic ballasts, DC-DC converters, motor driver half-bridges, class-D audio amplifiers, and any low-to-medium power half-bridge requiring a self-contained oscillator and driver. The Pb-free suffix indicates compliance with lead-free process and RoHS directives. When designing with the IR21531STRPBF, ensure the bootstrap capacitor is sized to refresh the high-side supply within the oscillator period, and verify that the switching frequency stays below the device's maximum capability to allow sufficient bootstrap recharge time. The RC timing components set the operating frequency, so 1% tolerance parts are recommended for accurate frequency control. This page synthesizes distributor pricing, drop-in alternatives in the SOIC-8 footprint, and practical design notes not collected in a single location in the manufacturer datasheet.
IR2153PBF - 600V Half-Bridge Gate Driver | Infineon
The Infineon IR2153PBF is a 600V self-oscillating half-bridge gate driver IC housed in an 8-pin PDIP through-hole package, integrating a high-voltage gate driver with a front-end RC oscillator similar to the industry-standard CMOS 555 timer. It delivers gate drive currents with 45 ns typical rise time and 80 ns typical fall time, supporting switching frequencies set by external RT/CT components from DC up to approximately 100 kHz. The device targets low- and medium-power MOSFET and IGBT half-bridge topologies where a compact self-contained driver replaces discrete oscillator + bootstrap + level-shift designs. A half-bridge gate driver is a power-management IC that produces two complementary gate-drive signals (HO and LO) referenced to a switching node (VS) and ground, enabling control of a high-side and low-side power switch in a totem-pole or full-bridge arrangement. The half-bridge driver family belongs to the broader gate-driver IC category, which sits under power management ICs and ultimately under power semiconductors. Compared to low-side-only drivers, half-bridge drivers add a high-voltage level-shifter and bootstrap mechanism that lets the high-side switch be driven when its source sits at the bus voltage. The IR2153PBF extends this with a built-in oscillator, eliminating external PWM generation hardware. Key features include integrated 600V half-bridge gate driver, 15.6V zener clamp on VCC, micropower startup, tighter initial deadtime control with a low temperature coefficient, shutdown feature (1/6th VCC) on the CT pin, and increased undervoltage lockout (UVLO) thresholds. The internal deadtime and shoot-through protection logic prevent simultaneous conduction of the high-side and low-side MOSFETs. Two output channels source and sink gate charge, producing clean edges on MOSFET gates even at moderate load currents. Architecturally, the IR2153PBF combines a CMOS 555-style oscillator, an internal bootstrap diode-equivalent level shifter, and high-side / low-side driver buffers rated to 600V. The 15.6V zener clamp on VCC protects the gate driver supply rail from transients, while the micropower startup reduces quiescent current to about 500 uA. The internal deadtime control is tightly toleranced to minimize shoot-through and improve efficiency across operating temperature. Typical applications include fluorescent lamp ballasts, HID ballasts, switch-mode power supplies (SMPS), motor drivers for small brushless DC fans and pumps, electronic transformers for halogen lighting, and other low-power half-bridge converter topologies. The wide VCC range (10V to 15.6V clamped) makes it compatible with standard 12V and 15V auxiliary rails. When designing with the IR2153PBF, place RT and CT close to the IC pins to minimize timing jitter, and use a low-ESR bypass capacitor on VCC. The bootstrap diode and capacitor values must be sized for the maximum high-side on-time to avoid UVLO triggering; Infineon recommends a fast-recovery bootstrap diode for high-frequency operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
IR2153SPBF - 600V Self-Oscillating Half-Bridge Driver | Infineon
The Infineon IR2153SPBF is a 600 V self-oscillating half-bridge gate driver IC housed in an 8-pin SOIC (S) package with an integrated front-end oscillator similar to the industry-standard CMOS 555 timer. It combines a high-voltage half-bridge gate driver with programmable deadtime, a shutdown feature on the CT pin, and 15.6 V internal clamp on the gate drive supply, delivering the same timing-resistor-and-capacitor programming familiar to designers of classic 555-timer based SMPS half-bridge front ends. A half-bridge gate driver IC is a power-management building block that drives the high-side and low-side MOSFETs (or IGBTs) of a half-bridge converter from a single low-voltage control input. The IR2153 is part of the broader gate-driver hierarchy: gate driver -> half-bridge driver -> high-voltage gate driver -> power management IC -> semiconductor. Its self-oscillating topology places it in the SMPS controller family, where timing RT/CT sets the switching frequency and the internal logic adds the programmable deadtime needed to prevent shoot-through. Key features include 600 V offset voltage tolerance on the high-side channel, 15.6 V gate-clamp for protecting logic-level MOSFETs, programmable oscillator frequency through external RT and CT, internal deadtime control, and a CT-pin shutdown that disables both gate outputs with a logic-low signal. The internal bootstrap structure requires only a single low-voltage supply, simplifying PCB layout and reducing external component count compared with discrete half-bridge implementations. The architecture uses a CMOS 555-style oscillator feeding a high-side level shifter and a low-side driver, with both channels rated for negative transients on the switching node. This makes the part tolerant of the harsh dv/dt environment typical of half-bridge converters, and the integrated bootstrap diode (on the 'D' variant) further reduces BOM count. The RC input circuit category identifies it as programmable-timing, not fixed-frequency or PWM-controlled by an external MCU. Typical applications include self-oscillating half-bridge converters for electronic ballasts, switch-mode power supplies under 200 W, electronic transformers for halogen lamp replacement, and motor-driver front ends. The shutdown pin makes it suitable for ballast protection circuits that need to disable both gates on lamp removal. The 8-SOIC footprint is pin-compatible with other 8-pin gate drivers in the IR215x family. When designing, keep the high-side bootstrap diode external on the standard S-variant (the IR2153DPbF has the internal diode), select RT and CT to program the frequency per the datasheet curves, and verify deadtime meets the MOSFET turn-off specification. Layout should keep the CT pin trace short to avoid noise injection that can false-trigger shutdown. This page synthesizes distributor pricing for the IR2153SPBF, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers select, source, and qualify the part quickly.
IR2153STRPBF - 600V Self-Oscillating Half-Bridge Driver | Infineon
The Infineon IR2153STRPBF is a self-oscillating 600 V half-bridge gate driver IC with integrated bootstrap functionality, housed in an 8-pin SOIC package. It combines a fixed-frequency oscillator, a programmable deadtime control, and high-side/low-side gate drive channels rated to 600 V. Per the manufacturer datasheet, the device targets driving IGBTs and MOSFETs in offline power conversion topologies such as SMPS ballasts, motor drives, and half-bridge converters. A gate driver IC is a power-management semiconductor that translates low-power logic-level PWM commands from a controller into the high-current, high-voltage signals required to switch the gate of a discrete power MOSFET or IGBT. Half-bridge drivers specifically produce two complementary outputs (high-side and low-side) to drive a totem-pole arrangement of switches, which forms the basic building block of half-bridge, full-bridge, and Class-D switching topologies. The IR2153 sits in the hierarchy: gate driver IC -> half-bridge driver -> bootstrap driver -> high-voltage driver IC -> power management semiconductor. Key features include a 600 V absolute maximum offset voltage on the high-side channel, integrated 15.6 V Vcc zener clamp, micropower startup (typical quiescent current under 100 uA from VCC), programmable oscillator frequency via external RT/CT, and tighter initial deadtime control for symmetric switching. The internal bootstrap MOSFET eliminates an external discrete, simplifying PCB layout. Compared to the older IR2151, the IR2153 adds a shutdown feature (1/6 VCC on CT pin) and increased UVLO hysteresis of 1 V. Technically, the IR2153 uses a high-voltage level-shift circuit to translate the low-side ground-referenced logic into the floating high-side domain. Its deadtime is generated by the CT pin discharge slope and an internal threshold, giving predictable cross-conduction protection. The architecture is bipolar CMOS-DMOS (BCD) and is specified for -40C to +125C operation. For new designs, Infineon recommends the IRS2153D successor. Typical applications include electronic ballasts for fluorescent and HID lamps, half-bridge and push-pull converters, Class-D audio amplifiers, small motor drivers, and any low-to-medium power offline switching supply where a self-oscillating topology eliminates the need for an external controller IC. When designing with the IR2153, ensure the bootstrap capacitor (typically 100 nF to 1 uF ceramic) and supply bypass are placed close to the IC. Verify that the high-side floating supply voltage (VB-VS) stays above the UVLO threshold during the minimum high-side on-time to avoid high-side turn-off. This page synthesizes distributor pricing across 7+ sources, drop-in alternatives in the same 8-SOIC footprint, and practical design notes that supplement the manufacturer datasheet.
IR21814STRPBF - 600V Half-Bridge Gate Driver IC | Infineon
The Infineon IR21814STRPBF is a 600V high-voltage half-bridge gate driver IC with independent high-side and low-side referenced output channels, housed in a 14-pin SOIC package. The device delivers 1.9A typical source and 2.3A typical sink peak gate drive currents using proprietary HVIC and latch-immune CMOS technologies that enable ruggedized monolithic construction. It operates with a gate drive supply range from 10V to 20V and features an integrated bootstrap diode and undervoltage lockout for both high-side and low-side channels. A half-bridge gate driver is a power management IC that controls one high-side and one low-side MOSFET or IGBT in a totem-pole configuration, translating low-voltage PWM logic signals into the high-voltage, high-current drive required to switch the power devices efficiently. Within the broader taxonomy, gate drivers sit between microcontrollers/MOSFET gate resistors and the discrete power switches themselves in the signal chain. The half-bridge topology is the foundational building block of DC motor drives, Class D audio amplifiers, and switched-mode power supplies. Key features include 3.3V logic compatibility on inputs, dV/dt immunity, and tolerance to negative transient voltages on the VS pin - critical for motor drive and PFC applications where inductive kickback is common. The deadtime is internally fixed at approximately 500ns, preventing shoot-through between the high-side and low-side outputs. The integrated bootstrap switch simplifies the bill of materials by eliminating the need for an external bootstrap diode in lower-power designs. The IR21814STRPBF utilizes Infineon's high-voltage junction-isolation (HVIC) process combined with CMOS input logic, allowing the high-side channel to level-shift signals up to 600V with minimal propagation delay. Typical propagation delay is around 180ns, with matched channel-to-channel delay to keep timing skew manageable in high-frequency switching designs. The latch-immune CMOS construction ensures stable operation in noisy industrial environments. Typical applications include three-phase motor drive inverters when paired with three IR21814STRPBF devices, Class D audio amplifiers, switching-mode power supplies (SMPS), high-side buck converters, and uninterruptible power supplies (UPS). The 600V rating makes it suitable for 230V/400V AC line rectification-fed bridge circuits. The independent input structure also supports asymmetric drive schemes for synchronous rectifiers. When designing with this part, the bootstrap capacitor value must be sized for the gate charge of the driven MOSFET at the chosen switching frequency. Undervoltage lockout thresholds at approximately 8.2V (rising) and 7.5V (falling) for VCC must be observed to prevent partial enhancement of the power switches during low-voltage transients. This page synthesizes distributor pricing, drop-in alternatives from the Infineon gate-driver family, and practical design notes not found in the standalone manufacturer datasheet.
IR2181SPBF - 600V Half-Bridge Gate Driver IC | Infineon
The Infineon IR2181SPBF is a high-voltage, high-speed power MOSFET and IGBT half-bridge gate driver with independent high-side and low-side referenced output channels, housed in an 8-pin SOIC (SO-8) package. It delivers typical 1.9 A source and 2.3 A sink gate-drive currents, supports logic-level inputs down to 3.3 V, and operates with a gate-drive supply range of 10 V to 20 V. The driver is fully operational to +600 V on the high-side bootstrap section. A gate driver IC is a power-management component that translates low-current PWM logic signals from a microcontroller or DSP into the high-current gate-drive signals required to switch power MOSFETs or IGBTs. Half-bridge gate drivers specifically drive the high-side and low-side switches of a half-bridge, providing the level-shifting needed to reference the high-side gate to the switching node. Within the broader taxonomy, the IR2181 belongs to gate drivers -> driver ICs -> power management ICs -> semiconductors, and uses Infineon's proprietary HVIC (High-Voltage Integrated Circuit) and latch-immune CMOS technologies for rugged monolithic construction. Key features include dV/dt immunity, undervoltage lockout (UVLO) for both the high-side and low-side channels, a separate logic supply range from 3.3 V to 20 V, and tolerance to negative transient voltages on the high-side return (VS pin). The matched propagation delay between high-side and low-side channels (typically ~140 ns) and the small 8-SOIC footprint make the IR2181SPBF well-suited to compact motor-drive and SMPS designs where board area and switching timing symmetry are critical. The architecture combines a level-shifted high-side channel driven from a bootstrap capacitor with a ground-referenced low-side channel. The high-side channel can float up to 600 V above ground, while the integrated deadtime logic and the matched propagation delays protect against cross-conduction in the half-bridge. This monolithic HVIC construction removes the need for an isolated DC-DC converter for the high-side gate drive, reducing BOM cost and PCB area. Typical applications include three-phase and single-phase motor drives (variable-frequency drives, HVAC compressors, small appliances), switch-mode power supplies (SMPS), uninterruptible power supplies (UPS), half-bridge and full-bridge DC-DC converters, and Class-D audio amplifiers. The 3.3 V logic compatibility allows direct interfacing with low-voltage microcontrollers, removing the need for a logic-level translator. When designing with the IR2181SPBF, observe the bootstrap capacitor selection and refresh requirements for the high-side supply (VB-VS). An undersized bootstrap capacitor causes excessive ripple on VB and may trigger UVLO under high duty cycle or low-frequency operation. Use a low-ESR ceramic bypass capacitor close to the VCC and VB pins to keep the gate-drive rail stable under high peak currents. This page synthesizes distributor pricing, drop-in alternatives from Infineon and competitor lines, and practical design notes not found in the manufacturer datasheet alone.
IR2181STRPBF - 600V Half-Bridge Gate Driver 1.9A/2.3A | Infineon
The Infineon IR2181STRPBF is a 600V half-bridge gate driver IC housed in an 8-pin SOIC (0.154", 3.90mm width) package, providing independent high-side and low-side drive outputs for IGBTs and power MOSFETs in switching converter and motor drive topologies. The device is specified to source 1.9A peak and sink 2.3A peak gate current, supporting switching frequencies suitable for sub-MHz power conversion stages. It is fully operational to +600V and tolerant to negative transient voltage, with integrated dV/dt immunity that prevents false turn-on in noisy switching environments. What is a half-bridge gate driver? A gate driver is a power amplifier that translates low-power logic-level PWM signals from a microcontroller or DSP into the high-current, high-voltage drive required to rapidly switch the gate of a power MOSFET or IGBT. Half-bridge drivers specifically provide two coordinated outputs (high-side floating and low-side referenced) that drive one half of an H-bridge or a single switching leg, enabling efficient synchronous buck, boost, half-bridge, and full-bridge topologies. In the system hierarchy: gate driver -> MOSFET/IGBT driver -> power management IC -> discrete semiconductor. Key features of the IR2181STRPBF include a wide gate drive supply voltage range from 10V to 20V, independent undervoltage lockout (UVLO) for both high-side and low-side channels, and a typical propagation delay of 180ns. Logic inputs are 3.3V and 5V compatible, allowing direct interface with modern microcontrollers, DSPs, and FPGA-based control platforms without level shifters. The non-inverting input configuration simplifies PWM timing alignment in motor control firmware. The architecture uses a high-voltage level-shifting well with proprietary latch-up immunity, allowing the high-side channel to float up to 600V above ground. This monolithic integration eliminates discrete bootstrap components' complexity and enables a single-IC solution for half-bridge power stages from 100W to several kilowatts. Typical applications include driving the primary switching leg in switch-mode power supplies (SMPS), three-phase motor driver inverter stages (used in pairs with a third driver for the low-side IGBTs), Class D audio amplifiers, electronic ballasts for HID lighting, and industrial heating and welding inverters. The wide voltage tolerance also makes it suitable for automotive 12V/24V battery-fed systems and solar micro-inverters. When designing with this device, ensure the bootstrap capacitor on the VBS pin is sized to supply the high-side gate charge plus quiescent current during the on-time. Place a 1uF X7R ceramic bypass on VCC and a 100nF on VBS to decouple the floating supply rail. Avoid exceeding the absolute maximum VBS-VS of 20V and the dV/dt rating specified in the manufacturer datasheet. This page synthesizes distributor pricing across DigiKey, Mouser, and LCSC, drop-in compatible 8-SOIC alternatives, and practical design notes not found in the manufacturer datasheet alone.
IR21834STRPBF - 600V Half-Bridge Gate Driver IC | Infineon
The Infineon IR21834STRPBF is a 600V half-bridge gate driver IC with inverting and non-inverting inputs, delivering 1.9A source / 2.3A sink peak drive current in a 14-pin SOIC package. It operates from a gate-drive supply range of 10V to 20V with undervoltage lockout for both high-side and low-side channels, and tolerates negative transient voltages while being dV/dt immune. The driver is fully operational to +600V on the floating high-side channel, allowing direct bootstrap operation in half-bridge and full-bridge power stages. A half-bridge gate driver is a specialized power management IC that sits between a low-voltage control signal (from a microcontroller, DSP, or PWM controller) and the high-power MOSFETs or IGBTs in a switching power stage. It translates logic-level PWM commands into the high-current gate-charge pulses required to switch power semiconductors efficiently, while providing level-shifting isolation between the low-side control ground and the high-side floating supply referenced to the half-bridge switching node. Key features of this part include 3.3V and 5V logic-compatible inputs, matched propagation delay between channels for symmetric PWM timing, and a low-side input that can be configured as either inverting or non-inverting for design flexibility. The 14-SOIC package supports surface-mount assembly and provides adequate thermal performance for typical driver duty cycles where the IC itself dissipates only gate-charge related losses. The IR21834STRPBF uses a proprietary HVIC (high-voltage integrated circuit) process that integrates level-shifting, bootstrap diode functionality for the high-side supply, and robust ESD protection. The floating channel is specifically designed to handle the rapid dV/dt transitions present on the switching node of half-bridge converters without injecting spurious glitches into the gate-drive output. Typical applications include motor drive inverters (BLDC, PMSM, stepper drivers), switched-mode power supplies (SMPS) including half-bridge and full-bridge topologies, induction heating, uninterruptible power supplies (UPS), and DC-DC converters using synchronous rectification. The wide voltage tolerance makes it suitable for both 110/120V and 220/240V mains-powered industrial equipment as well as 400V/800V electric vehicle auxiliary systems. When designing with this part, place the bootstrap capacitor (typically 100nF to 1uF ceramic) close to the VB and VS pins to ensure reliable high-side startup. The VCC decoupling should be a 1uF ceramic in parallel with a larger bulk capacitor to handle the gate-charge current spikes. Verify the bootstrap refresh time under all PWM duty-cycle conditions to prevent the high-side supply from falling below the UVLO threshold. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers quickly evaluate the IR21834STRPBF for production designs.
IR2304SPBF - 600V Half-Bridge Gate Driver IC | Infineon
The Infineon IR2304SPBF is a high-voltage, high-speed power MOSFET and IGBT half-bridge gate driver with independent high-side and low-side referenced output channels, rated for bootstrap operation up to +600 V. Housed in an 8-pin SOIC (SO-8 N) package, the device integrates proprietary HVIC and latch-immune CMOS technologies for ruggedized monolithic construction and supports gate drive supply range of 10 V to 20 V. A gate driver is an integrated circuit that amplifies low-power control signals from a microcontroller or analog controller into the high-current drive required to switch the gate of a power MOSFET or IGBT. Half-bridge drivers specifically control one high-side and one low-side switch in a totem-pole configuration, which is the building block of DC-DC converters, motor drives, and Class D amplifiers. The IR2304SPBF belongs to the gate-driver category within the broader PMIC (Power Management IC) hierarchy, sitting between logic-level controllers and the discrete power switches they command. Key features include 130 mA source/sink gate drive current at the outputs, 220 ns typical propagation delay, matched propagation delay between the two channels for low distortion, and 3.3 V, 5 V, and 15 V input-logic compatibility. Undervoltage lockout (UVLO) is provided for both high-side and low-side channels, and the device is fully operational to +600 V with negative transient voltage tolerance and dV/dt immunity on the high-side reference. The IR2304SPBF architecture uses a level-shifting HVIC to translate the low-side logic input to the floating high-side channel referenced to the switching node. This monolithic construction eliminates the optocoupler or pulse transformer typically required for high-side drive in discrete designs, simplifying PCB layout and reducing BOM cost while improving reliability. Typical applications include low-cost half-bridge and full-bridge DC-DC converters, three-phase motor driver front ends, Class D audio amplifiers, electronic ballasts for HID and fluorescent lighting, and general-purpose gate-drive boards where a single 600 V-tolerant IC replaces discrete drive circuitry. When designing with this driver, ensure the bootstrap diode and capacitor values are sized for the high-side refresh current, which depends on switching frequency and high-side quiescent draw. Place a local ceramic bypass capacitor (typically 1 microfarad X7R) directly across VCC and VSS pins within 5 mm of the package to suppress the switching-current spikes. This page synthesizes distributor pricing as of 2026-09-15, drop-in alternative analysis with parametric proximity scores, and practical design notes that go beyond the manufacturer datasheet to support sourcing and design decisions.
IR2304STRPBF - 600V Half-Bridge Gate Driver | Infineon
The Infineon IR2304STRPBF is a 600 V half-bridge gate driver IC designed for driving N-channel power MOSFETs and IGBTs in high-side/low-side configurations, housed in an 8-pin SOIC (SO-8) package. The part delivers typical 0.29 A source and 0.6 A sink output currents, with a 10 V to 20 V supply range, a 600 V offset voltage rating on the high-side channel, and integrated shoot-through protection that prevents simultaneous conduction of the high-side and low-side switches. A non-inverting logic input accepts 3.3 V CMOS or LSTTL signals, simplifying interface with microcontrollers and DSPs. The floating channel tolerates negative transient voltages and is dV/dt immune, enabling robust operation in noisy switching environments. A half-bridge gate driver is a type of gate driver IC specifically designed to control one high-side and one low-side switch in a half-bridge topology used in switch-mode power supplies, motor drives, and Class D amplifiers. As a member of the broader gate driver family (gate driver -> driver IC -> power management IC -> semiconductor), the IR2304 reduces switching losses by providing high peak current to quickly charge and discharge the gate capacitances of large power MOSFETs or IGBTs, which the microcontroller or controller IC cannot drive directly. The integrated deadtime and matched propagation delays further prevent cross-conduction in the half-bridge. Key features include 600 V maximum offset voltage, 220 ns typical turn-on and turn-off propagation delay with matched delay between channels, and built-in deadtime to prevent shoot-through. The output stage uses a high pulse-current buffer designed for minimum driver cross-conduction. The 8-SOIC package supports surface-mount assembly and provides sufficient thermal performance for typical half-bridge applications in industrial and consumer environments. The IR2304 uses a bootstrap-capacitor technique for the high-side supply, allowing the high-side driver to float above the bus voltage while the low-side driver is referenced to ground. This architecture eliminates the need for an isolated DC/DC converter or level shifter in many applications, reducing BOM cost and PCB area. Typical applications include switch-mode power supplies (SMPS), DC-DC converters, motor control drives for HVAC and small appliances, Class D audio amplifiers, and general-purpose half-bridge and full-bridge (using two IR2304s) inverters for industrial automation. The non-inverting single-input control simplifies firmware design, as a single PWM signal controls both outputs with built-in deadtime. When designing with this device, ensure the bootstrap diode is a fast-recovery or ultrafast type rated above 600 V, and that the bootstrap capacitor is sized to supply the high-side gate charge for the switching frequency used. Place a local 0.1 µF VCC bypass capacitor and a 1 µF to 10 µF bulk capacitor as close as possible to the VCC pin to handle the gate charge currents. Avoid exceeding the negative VS transient rating to prevent latch-up of the high-side driver. This page combines distributor pricing, drop-in alternatives, and practical design notes not collected in the manufacturer datasheet.