전력 MOSFET 드라이버
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AUIR3242STRXUMA1 - High-Side MOSFET Driver | Infineon
The Infineon AUIR3242STRXUMA1 is an automotive-grade high-side MOSFET driver IC in a PG-DSO-8-907 (8-pin SOIC) package, designed for back-to-back MOSFET switch topology. The device operates from 3V to 36V, integrating a boost DC/DC converter that uses an external inductor to generate gate-drive voltage above the battery rail, enabling standard-level N-channel MOSFETs to be driven even at low battery conditions. It features a non-inverting input control and very low quiescent current in both ON and OFF states, making it suited for always-on automotive loads. A high-side MOSFET driver is a specialized gate-driver IC that switches the gate of an N-channel MOSFET referenced to the positive supply rail rather than ground. This topology simplifies low-side wiring, reduces ground-loop noise, and protects downstream loads from ground-shift faults. The AUIR3242S family belongs to a broader hierarchy of gate drivers within Infineon's automotive power-management portfolio, sitting alongside half-bridge and bootstrap-based high-side drivers. Key features include reverse-battery protection, very low quiescent current, internal boost converter, and automotive-grade qualification per Infineon's reliability standards. The non-inverting logic input makes relay replacement straightforward, and the wide 3V-36V input range covers 12V and 24V automotive buses with load-dump margin. The PG-DSO-8-907 surface-mount package offers compact footprint and good thermal performance for under-hood PCB layouts. The driver combines a charge-pump/boost converter using a small external inductor with a gate-driver output stage. The boost topology generates VGS above VIN, ensuring full enhancement of standard N-channel MOSFETs even when battery voltage sags during cranking. Reverse-battery protection blocks destructive current flow if the supply polarity is reversed during service or jump-start events. Typical applications include back-to-back N-channel MOSFET switches in automotive body modules, battery isolation switches, eFuse replacements, relay replacement circuits, and load-driving in BCM (body control modules). The low Iq enables permanent connection to battery without significant quiescent drain, satisfying modern vehicle quiescent-current budgets. Designers should select an external inductor and bootstrap/charge-pump capacitor per the datasheet's typical-application circuit to ensure stable boost operation. Reverse-battery protection eliminates the need for an external blocking diode in most 12V systems, reducing BOM count and board area. The input control pin can be driven directly from a microcontroller GPIO or a logic-level signal.
AUIRS21271STR - 600V High-Side Gate Driver, 290mA | Infineon
The Infineon AUIRS21271STR is an automotive-grade, high-side gate driver IC in a non-inverting configuration, housed in an 8-pin SOIC package with a maximum supply rating of 600V. It delivers 290 mA of gate drive current with 175 ns propagation delay, supports an operating supply range of 10 V to 20 V, and integrates over-current protection with current sensing feedback. A gate driver is a power-management IC that sits between a low-power controller (MCU, DSP, or logic gate) and a high-power switching device such as a MOSFET, IGBT, or GaN transistor. Gate drivers belong to the broader family of PMIC (Power Management IC) gate driver ICs, which are themselves part of the power management semiconductor category. High-side gate drivers like the AUIRS21271STR switch the high-side of a half-bridge or floating load referenced to a switching node, providing level shifting and bootstrap-compatible drive in compact surface-mount packages. Key differentiating features of the AUIRS21271STR include 80 ns typical rise time and 40 ns typical fall time, an integrated over-current comparator with an external sense input, and automotive-grade qualification per AEC-Q100. The single-channel topology simplifies PCB routing compared to half-bridge drivers, while the 600 V absolute maximum rating provides ample margin for 400 V or 500 V bus systems typical of EV traction and industrial drives. Architecturally, the part uses a level-shifted high-side drive stage with an internal charge pump and a current-sense amplifier path that compares the CS pin against an internal threshold. The non-inverting input logic requires a single logic-level PWM signal from the controller. The IC draws a low quiescent current from VCC and is qualified for automotive temperature ranges, making it suited for under-hood and chassis electronics. Typical applications include automotive DC-DC converters, traction inverter gate drivers, industrial motor drives, and switch-mode power supplies (SMPS) where the load is high-side referenced. The part is also used in plug-in hybrid (EV) onboard chargers, solar inverters, and welding equipment. Designers value the integrated over-current protection, which reduces external component count and BOM cost. When designing with this driver, ensure that the bootstrap capacitor is sized to maintain VBS above the UVLO threshold during the high-side on-time, and that the CS pin filter network rejects switching noise to avoid false over-current trips. A local 0.1 µF ceramic decoupling capacitor on VCC placed within 5 mm of the pin is essential. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including cross-brand equivalents and PCB layout guidance.
AUIRS21811STR - 600V Half-Bridge Gate Driver 1.9A | Infineon
The Infineon AUIRS21811STR is a 600 V half-bridge gate driver IC housed in an 8-pin SOIC (SO-8) package with 1.9 A peak source / 2.3 A peak sink drive current and a non-inverting logic input. The part operates from a 10 V to 20 V VCC supply, tolerates negative transient voltages on the bootstrap high-side rail, and is qualified to AEC-Q100 for automotive environments. A gate driver IC is a power-management semiconductor that translates low-power PWM control signals from a microcontroller or DSP into the high-current gate-drive signals required to switch discrete power MOSFETs, IGBTs, or GaN FETs. Gate drivers sit between the logic controller and the power stage in the system hierarchy: gate driver -> power management IC -> semiconductor -> discrete switch. By providing local high-current drive and level-shifting, they reduce switching losses, allow smaller gate resistors, and protect the controller from high-voltage transients on the switched node. Key features of the AUIRS21811STR include 1.9 A source / 2.3 A sink peak output current, 600 V absolute maximum bootstrap high-side rail, 10 V to 20 V VCC range with integrated undervoltage lockout (UVLO) on both VCC and VBS rails, 60 ns typical rise time and 35 ns typical fall time into a 1 nF load, and 160 ns propagation delay (typical). The 8-SOIC footprint keeps the design compact while the high dV/dt immunity and negative VS transient tolerance simplify layout in half-bridge and full-bridge motor-drive topologies. Architecturally, the AUIRS21811STR uses a level-shifted high-side channel with a floating bootstrap supply referenced to the switch node (VS), allowing continuous high-side drive up to the 600 V rail. The low-side channel is supplied directly from VCC. The input stage accepts 3.3 V/5 V CMOS or logic-level inputs with non-inverting polarity, and the matched propagation delays between channels simplify dead-time control in complementary PWM applications. AEC-Q100 grade-1 qualification and automotive-grade moisture sensitivity level (MSL3) make it suitable for underhood and chassis electronics. Typical applications for the AUIRS21811STR include automotive 12 V/48 V motor drives (HVAC blowers, oil/water pumps, electric power steering auxiliary rails), DC-DC converter primary-side MOSFET driving, Class D audio amplifiers, and small industrial half-bridge inverters. The wide bootstrap tolerance also makes it usable in 230 V AC PFC and totempole PFC front ends when the topology calls for a 600 V driver. When designing with this part, place the VCC bypass capacitor (typically 0.1 uF ceramic in parallel with 10 uF bulk) as close to pins 5 and 8 as possible, and keep the bootstrap diode and BST capacitor (typically 0.1 uF to 1 uF) loop tight to limit the high-side rail ringing. For applications above 1 kW per phase, verify that the 1.9 A source/2.3 A sink rating gives sufficient gate-charge headroom for the chosen MOSFET/IGBT; larger switches may require a dedicated gate-driver buffer stage. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that supplement the manufacturer datasheet and help engineers select, source, and lay out the AUIRS21811STR with confidence.
BCM59121B0KMLG - Octal 802.3bt PoE PSE Controller | Broadcom
The Broadcom BCM59121B0KMLG is an octal, fully integrated IEEE 802.3bt-compliant Power Sourcing Equipment (PSE) controller housed in a 56-pin QFN (8x8 mm) package. According to the Broadcom product brief, the device integrates eight low-RDSon (0.2 ohm) high-voltage FETs, an onboard microcontroller, and Broadcom's proprietary lossless internal current-sense path, delivering 8-channel PoE/PoE+/PoE++ sourcing for switches, midspans, and industrial Ethernet equipment. A PSE controller is a category of power management IC that resides in network switches or midspan hubs and is responsible for detecting, classifying, and powering Powered Devices (PDs) over Ethernet cabling. Within the broader hierarchy, a PSE controller is a specialized Power-over-Ethernet IC, itself a subcategory of Power Management IC, which in turn falls under the broader umbrella of Power Management. The BCM5912X family specifically targets high-port-count enterprise and industrial switches that must comply with the latest IEEE 802.3bt standard. Key features include 8 independent PSE channels, 0.2 ohm integrated MOSFETs, 802.3af/at/bt support, I2C/SPI management interface, and per-port current/voltage monitoring. The BCM59121B0KMLG supports legacy 2-pair and modern 4-pair powering modes, including Type-3 (60 W) and Type-4 (90 W) operation, with proprietary current-sense topology eliminating the need for external sense resistors. The 56-QFN package combines power-stage thermal performance with a compact 8x8 mm footprint suitable for high-density switch designs. Architecturally, the device uses Broadcom's lossless internal current-sense method together with an embedded MCU to handle detection, classification, power-good timing, and fault recovery in hardware. This removes external FET drivers and sense resistors, reducing BOM and PCB area, while the on-die microcontroller provides port telemetry to the host switch CPU. Typical applications include enterprise managed switches, industrial Ethernet switches, IP surveillance NVRs, wireless LAN controllers with PoE uplinks, and any multi-port PSE system requiring IEEE 802.3bt compliance. The 4-pair Type-4 support makes it well-suited for powering high-demand devices such as PTZ cameras, Wi-Fi 6/6E/7 access points, and industrial lighting controllers. When designing with the BCM59121B0KMLG, allocate adequate copper area beneath the exposed pad for thermal dissipation. Designers should follow the BCM5912X hardware reference design and use Broadcom's evaluation kit firmware for code development.
BD8LA700EFV-CE2 - 8-Ch Auto Low-Side Switch, 24-HTSSOP-B | ROHM
The ROHM BD8LA700EFV-CE2 is an automotive-grade 8-channel low-side switch in a 24-pin HTSSOP-B package, integrating eight N-channel power MOSFETs with a CMOS control block on a single monolithic silicon die. Each channel delivers up to 200 mA continuous drain current, while built-in open-load detection, over-current protection, active clamping, and thermal-shutdown circuits safeguard the device and downstream wiring in harsh electrical environments. The -CE2 suffix indicates the part is qualified to automotive reliability standards and ships on tape-and-reel for high-volume assembly. A low-side switch is a power-distribution topology in which the load (lamp, solenoid, relay coil, LED string) is tied to V_BAT, and the MOSFET is placed between the load and ground. Pulling the MOSFET gate high by the MCU sinks current to ground and energizes the load; releasing the gate de-energizes it. Compared with high-side switches, low-side drivers simplify diagnostic feedback because the load-end is always at battery potential, enabling robust open-load detection even when the switch is off. Key features include 3 V to 5.5 V logic supply, integrated flyback/active clamp for inductive loads, parallel-channel operation for higher currents, very low quiescent current in standby, and built-in diagnostic flags (open-load, short-to-ground, over-temperature). The HTSSOP-B exposed pad lowers thermal resistance so all eight channels can run at full duty in ECU and BCM modules. Typical applications include automotive body-control modules (BCM) driving lamps and indicators, junction-box load drivers, HVAC actuator switching, and rear-lamp clusters. ROHM PCB OEMs' monolithic CMOS-plus-power-MOS architecture integrates the MOSFET and CMOS control on 1 chip, reducing PCB area versus discrete MOSFET arrays and improving fault-coverage uniformity across channels. When designing with this device, ensure the supply decoupling, exposed-pad soldering, and ground-return layout follow the manufacturer's reference pattern. The CE2 part is shipped over six distributors; pricing varies by reel size. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
BM61M41RFV-CE2 - 3750Vrms Isolated Gate Driver, 65ns, 4A | ROHM
The ROHM BM61M41RFV-CE2 is a galvanically isolated single-channel gate driver with 3750 Vrms isolation voltage, 65 ns I/O delay time, and 4 A peak output current, housed in a 10-pin SSOP-BW package. The device uses magnetic coupling to deliver reinforced isolation between the input control logic and the high-voltage power stage, eliminating the need for an external gate-drive transformer or opto-coupler in many topologies. An isolated gate driver is a power-management IC that transmits a PWM or on/off control signal across a safety-grade isolation barrier while providing the high peak currents needed to rapidly charge and discharge the gate capacitance of a power MOSFET, IGBT, or SiC FET. Within the broader hierarchy, the BM61M41RFV-CE2 sits at: isolated gate driver -> gate driver -> power management IC -> semiconductor. Galvanic isolation is mandatory in motor drives, solar inverters, and industrial bus converters where the control side (ground-referenced, user-accessible) must remain safely separated from the high-voltage switching node referenced to a DC-link that may exceed 600 V or 1200 V. Key features include a minimum input pulse width of 60 ns (well below the pulse widths used in standard PWM schemes), an input-side supply range of 4.5 V to 5.5 V that interfaces directly to 5 V logic or 3.3 V microcontrollers through level shifting, and an output-side supply range of 9 V to 24 V supporting standard MOSFET (10-12 V), IGBT (15 V) and SiC (18-20 V) gate-drive requirements. The device provides a single driver channel and is rated for operation from -40 °C to +125 °C. Architecturally, the BM61M41RFV-CE2 integrates an on-chip micro-transformer that couples the input signal across the isolation barrier using high-frequency magnetic pulses, then reconstructs it on the secondary side to drive an output stage capable of sourcing and sinking the gate charge of mid-power switches. Compared with opto-coupler-based gate drivers, the magnetic-coupling approach avoids the slow propagation, LED-aging, and CTR-degradation issues that affect long-term reliability in high-temperature environments. Typical applications include driving low-side MOSFETs in half-bridge configurations (per the BM61M41RFV-EVK001/BM61M41RFV-EVK002 evaluation boards), IGBT gate drive in motor-control inverters, SiC FET drive in EV onboard chargers and DC-DC converters, isolated drive for solar micro-inverters, and digital isolator replacement where a small gate-driver coil offers PCB-area savings. When designing with this part, observe the input-side and output-side decoupling guidance from the ROHM datasheet - typically 1 µF to 10 µF low-ESR ceramics placed within 2 mm of each supply pin - and confirm that the bootstrap or isolated supply rail can deliver the peak 4 A during MOSFET Miller plateau transitions. For half-bridge or high-side drive, pair the BM61M41RFV-CE2 with a dedicated high-side/level-shift solution from the BM61 family such as the BM61S41RFV-CE2. This page synthesizes distributor pricing, drop-in alternatives within the BM61 family, and practical PCB layout notes not consolidated in the manufacturer datasheet alone.
BQ500210RGZT - Qi Wireless Power Transmitter Manager | Texas Instruments
The Texas Instruments BQ500210RGZT is a second-generation, Qi-compliant wireless power transmitter manager with a 110 kHz to 205 kHz operating-frequency range, a 3 V to 3.6 V supply range, and a 48-VQFN 7 mm × 7 mm package. It is designed to control a single-channel wireless power transfer system in a contactless charging base station. A wireless power transmitter manager is a specialized power-management IC that coordinates sensing, communications, pulse-width modulation, and power-stage control for wireless charging equipment. Its hierarchy is wireless power controller, transmitter controller, power-management IC, and semiconductor. Unlike a general-purpose buck converter, this device is intended to manage an inductive power-transfer link operating under wireless-power-consortium protocols. The verified product information identifies the BQ500210 as an IF transmitter and a dedicated digital controller that periodically pings the surrounding environment for devices available for powering and monitors communication from the power receiver. Its Qi compliance and communication-monitoring functions help the base station detect receiver presence, exchange required control information, and adjust the wireless-power operating process. The controller operates from 3 V to 3.6 V and supports an operating-frequency range of 110 kHz to 205 kHz. Its 48-VQFN package is suitable for compact transmitter-PCB designs. The exposed-pad construction provides a thermal and electrical land-pattern requirement that must be implemented according to the manufacturer datasheet rather than treated as an ordinary 48-lead non-exposed package. Typical uses include Qi-compatible charging pads, embedded wireless charging surfaces, sealed charging products, furniture-integrated chargers, and hermetically sealed devices. Because the part is specifically intended for hermetically sealed devices and single-channel base stations, system-level matching between the controller, transmitter driver, resonant tank, receiver, and coil is essential. When laying out a transmitter board, preserve the recommended power and signal-loop topology and place high-current switching paths compactly. Keep sensitive communication and sensing paths away from resonant-current edges, use the manufacturer-recommended thermal-pad implementation, and validate the final coil, driver, switching frequency, and receiver combination rather than assuming that functionally similar controllers are interchangeable. This page consolidates the verified Texas Instruments product description, distributor listing information, package details, operating ranges, and cross-reference findings. It also separates verified facts from missing electrical details and avoids presenting unverified alternatives as drop-in replacements, helping engineers identify what must still be checked against the manufacturer datasheet.
BSP452 - 1.1A 60V Smart High-Side Switch | Infineon PROFET
The Infineon BSP452 is a 1.1 A, 60 V smart high-side N-channel power switch built on Smart SIPMOS technology with a monolithically integrated vertical power FET and charge pump. Housed in a PG-SOT223-4 (TO-252 style) package, it provides ground-referenced CMOS-compatible logic input and embedded diagnostic functions. The device combines a 60 V avalanche-rated vertical DMOS output stage with on-chip protections including over-temperature, over-voltage, ESD, current limit, and reverse-battery robustness. A high-side switch (also called a smart power switch or PROFET) is a semiconductor relay that sits between the battery/load supply and the load, controlling current flow with a logic-level signal. Compared with discrete MOSFET designs, an integrated high-side switch folds the gate drive, charge pump, protection, and ESD structures into one die, eliminating external components such as gate resistors, flyback diodes, and TVS clamps. In the broader taxonomy, the BSP205 belongs to: high-side switch -> load driver -> power distribution switch -> power management IC -> semiconductor. This category is widely adopted in 12 V automotive body electronics, industrial 24 V systems, and any application where a microcontroller must drive a resistive or inductive load. Key electrical ratings are 1.1 A nominal / 0.7 A DC continuous load current (per DigiKey listing), a 60 V supply rating with integrated clamping, typical on-resistance in the 200-500 mOhm range, and a logic-input CMOS threshold around 1.5 V. The integrated charge pump generates the gate voltage required to fully enhance the N-channel output FET from a 12 V or 24 V supply. A status feedback output reports fault conditions back to the host MCU, enabling robust diagnostic coverage in safety-critical body modules. Typical applications include automotive body control modules, lighting drivers (interior/exterior lamps, LED strings), relay and solenoid replacement, HVAC actuators, and any 12 V/24 V resistive or inductive load that requires on-die/off protection. According to the Infineon product page, BSP452 is part of the Classic PROFET 12V family aimed at cost-sensitive automotive modules where functional safety and long-term reliability are required. When designing with BSP452, ensure the input pin sees a CMOS-level signal and that adequate copper area is provided on the drain tab to dissipate I^2R losses. The integrated protections reduce the need for external fuses, TVS diodes, and freewheeling components in most applications. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and design notes beyond what is found in the standalone manufacturer datasheet for engineers selecting a Classic PROFET 12V high-side switch.
BSP452HUMA1 - 700mA Smart High-Side Switch SOT-223 | Infineon
The Infineon BSP452HUMA1 is a single-channel smart high-side power switch with an integrated vertical N-channel power FET, delivering up to 700 mA continuous load current in a 4-pin (3+Tab) SOT-223 surface-mount package. The device is rated for an operating supply range of 5 V to 34 V, an on-state resistance of 0.16 Ω (typical), and supports 12 V automotive load switching with embedded protection functions. A smart high-side switch is a type of power distribution switch that connects a load to the positive supply rail and integrates the power MOSFET with protection and diagnostic circuitry. Smart high-side switches sit within the broader category of power management ICs and load drivers, and are widely used to replace discrete MOSFETs plus fuse arrangements in body electronics and industrial control modules. Key features include short-circuit protection, overvoltage protection (clamp), overtemperature shutdown with hysteresis, overload protection, input protection (ESD), and inductive-load switching capability with negative output clamp. The part is qualified to AEC-Q100 standards for automotive applications and offers diagnostic feedback through the STATUS pin. The integrated charge pump generates the gate drive for the N-channel FET while keeping the load referenced to ground. The BSP452HUMA1 belongs to Infineon's Classic PROFET 12V family, which uses a vertical DMOS process to minimize RDS(on) for a given die area. Internal current limiting, thermal shutdown, and an active clamp structure for inductive loads allow reliable switching of solenoids, lamps, relays, and motors in 12 V vehicle electrical systems. Typical applications include automotive body modules (lighting, door modules, seat control), industrial PLC digital I/O, smart relay replacement, and any 12 V/24 V load-switching circuit where fault protection, low quiescent current, and small PCB area are required. When designing with this part, always observe the maximum 34 V supply rating, derate output current versus ambient temperature, and place the tab solder pad on sufficient copper area to meet the SOT-223 thermal resistance of approximately 65 K/W for reliable thermal performance. This page synthesizes distributor pricing, drop-in alternatives within the PROFET family, and practical design notes not consolidated in any single datasheet.
BSP742R - 1.5A Smart High-Side Switch | Infineon PROFET
The Infineon BSP742R is a single-channel smart high-side power switch from Infineon's Classic PROFET 12V family, providing 1.5 A nominal load current with 70 mΩ RDS(on) in a PG-DSO-8 (DSO-8) surface-mount package. The device integrates an N-channel vertical power FET with charge pump, ground-referenced CMOS-compatible input, and diagnostic feedback, monolithically realized in Smart SIPMOS technology. Operating supply range spans 5.5 V to 34 V with load-dump tolerance up to 40 V. An automotive-grade high-side switch (also called a smart power switch or PROFET) is an integrated circuit that drives resistive or inductive loads connected between the output pin and ground by switching the load's high-side connection to the battery rail. Compared with a discrete MOSFET plus fuse solution, a PROFET adds on-chip protection (overload, short-circuit, thermal shutdown, overvoltage) and a diagnostic feedback pin that reports fault status to the microcontroller, reducing BOM count and PCB area. Within the power-management hierarchy, BSP742R belongs to: load driver -> high-side switch -> power distribution IC -> power management semiconductor. Within Infineon's portfolio it sits in the Classic PROFET 12V family, optimized for nominal 12 V automotive buses. Key features include a 70 mΩ on-state resistance (typical), embedded current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection including load-dump, fast demagnetization of inductive loads, reverse-battery protection via an integrated resistor, and an open-drain status flag. CMOS-compatible ground-referenced control input simplifies direct connection to 3.3 V or 5 V microcontrollers without level shifters. The internal architecture combines an N-channel vertical power MOSFET driven by an on-chip charge pump so the output can be held at the battery rail while the gate is boosted above Vbb. This monolithic integration in Infineon's Smart SIPMOS process gives the BSP742R very low quiescent current and robust avalanche capability for unclamped inductive switching events. Typical applications include automotive body electronics (lighting, door lock, mirror heaters), 12 V industrial relay and solenoid replacement, HVAC actuators, and small DC motor drive. Designers favor the BSP742R when a single-channel protected high-side driver with diagnostic feedback is needed in a compact SO-8 footprint. Design trade-off to consider: the BSP742R's 1.5 A nominal rating is shared across the whole channel. For pulse loads exceeding the continuous rating, confirm SOA thermal limits in the datasheet and calculate steady-state dissipation using P = IL² × RDS(on). The exposed die pad (PG-DSO-8) must be soldered to a sufficient copper pour to meet theta_JA; otherwise thermal shutdown may trigger prematurely under heavy load.
BSP742RIXUMA1 - 400mA Smart High-Side Switch 41V | Infineon
The Infineon BSP742RIXUMA1 is a single-channel smart high-side power switch from the miniPROFET family, rated at 400 mA continuous output current and 41 V load dump capability, housed in a PG-DSO-8-6 (standard SOIC-8, 3.90 mm body width) surface-mount package. The device integrates a vertical N-channel power MOSFET, embedded protective functions, and a diagnostic feedback pin, making it a one-chip replacement for discrete MOSFET plus discrete protection circuitry. A smart high-side power switch is a semiconductor device that connects a load to the positive supply rail and integrates an N-channel MOSFET with comprehensive on-chip protection (overload, short-circuit, thermal shutdown, overvoltage including load dump, and reverse battery protection on most variants) plus status diagnostics. Within the broader taxonomy, this part sits in: smart power switch -> high-side switch -> power distribution IC -> PMIC -> power management -> semiconductor. The miniPROFET family specifically targets 12 V automotive and industrial loads such as lamps, solenoids, relays, and small motors where PCB area and reliability are critical. Key features include 250 mΩ typical on-state resistance (RDS(on)) at 25°C, current limitation set internally at approximately 0.4 A continuous load, thermal shutdown with automatic restart, fast demagnetization of inductive loads, and reverse battery protection rated to -16 V. The diagnostic pin reports open-load and overtemperature conditions. Operating supply range spans 5 V to 34 V (with 41 V load-dump transient tolerance), covering standard 12 V automotive rails with full margin. Architecturally the device combines a vertical DMOS output stage, charge pump for gate drive, bandgap-derived references, and an analog sense chain for current-limit and temperature monitoring. Integrated protection eliminates the need for a freewheeling diode across inductive loads because the same die absorbs the demagnetization energy internally. Typical applications include 12 V automotive body electronics (door lock actuators, mirror heaters, lamp drivers up to 400 mA), industrial PLC outputs, and any 12 V/24 V subsystem needing protected high-side switching with status feedback to a microcontroller. Companion products typically include a small microcontroller for diagnostic decoding and a flyback-resilient supply such as IFX007TAUMA1 or BTS462TATMA1 for higher-current rails. Design tip: derate the continuous current to approximately 0.3 A in a sealed enclosure without forced airflow; sustained 0.4 A operation requires the exposed pad to be soldered to at least 1 cm² of copper pour on the PCB. Inputs above 16 V continuous should be avoided on reverse-battery-tolerant variants. This page synthesizes distributor pricing, drop-in alternatives, design considerations, and parametric comparison data not found in the standalone manufacturer datasheet — useful for engineers evaluating BSP742RIXUMA1 in 12 V/24 V high-side load-switch designs.
BSP742RXUMA1 - 400mA Smart High-Side Switch, 5-34V | Infineon
The Infineon BSP742RXUMA1 is a 400 mA smart high-side power switch built around an integrated vertical N-channel power FET, housed in a PG-DSO-8-6 (8-pin small-outline) surface-mount package. It is a member of Infineon's Classic PROFET 12V family and is qualified to AEC-Q100 for automotive 12V load management, supporting an operating voltage range of 5 V to 34 V with a typical on-resistance of 70 mΩ. A high-side power switch is a semiconductor device that connects a load to the positive supply rail and controls current flow through the load using an N-channel MOSFET placed between the supply and the load. Within the broader component taxonomy, the BSP742RXUMA1 sits in the PMIC (Power Management IC) category as a power distribution switch / load driver, distinct from low-side switches (which sit between load and ground) and from DC-DC converters (which actively regulate voltage). High-side switches are preferred in automotive body electronics because they safely disconnect the load from the battery in fault conditions and prevent dangerous "load on ground" situations. Key specifications include 400 mA continuous load current, 70 mΩ typical R_DS(on) at 25°C, embedded protection features (overload, short-circuit, thermal shutdown with auto-restart, overvoltage including load-dump, and reverse-battery protection), and CMOS-compatible logic inputs with both active-high and active-low versions. The device also integrates fast demagnetization of inductive loads, making it ideal for driving relays, solenoids, valves, and small motors without external freewheeling diodes. The BSP742RXUMA1 uses Infineon's vertical DMOS process with charge-pump gate drive to deliver a true high-side switch in a compact 8-pin SO package. Its diagnostic feedback output reports fault status back to the microcontroller, supporting ISO 26262-style functional-safety architectures. The wide 5 V to 34 V operating range covers automotive cranking transients and 24 V truck/bus systems, while the low 5 µA quiescent current minimizes parasitic battery drain. Typical applications include automotive body electronics (door modules, seat control, mirror heaters), 24V industrial automation loads, programmable logic controller (PLC) digital outputs, and any 12V/24V load-driving circuit requiring embedded protection. The device is pin-to-pin compatible with other members of the Infineon PROFET family such as BSP742R, allowing designers to scale current per channel without PCB rework. When designing with this device, observe the maximum junction temperature of 150°C and derate load current aggressively above 85°C ambient. The input pins accept 3.3V or 5V CMOS logic directly; tie the input pin to Vbb through a pull-up resistor if left floating to prevent unwanted turn-on. Always place a reverse-polarity protection diode or use the part's internal reverse-battery feature with proper heat-sinking. This page synthesizes real-time distributor pricing, drop-in compatible pin-to-pin alternatives from the Infineon Classic PROFET family and key competitors, and practical PCB/protection design notes that go beyond the manufacturer datasheet's typical application circuit.
BSP752R - 1.3A 24V Smart High-Side Switch | Infineon
The Infineon BSP752R is a 1-output N-channel vertical power FET smart high-side switch rated at 52 V load dump and 1.3 A continuous output current, housed in a PG-DSO-8-6 (DSO-8-6) surface-mount package. It integrates a charge pump, ground-referenced CMOS-compatible input, and diagnostic feedback monolithically in Infineon's Smart SIPMOS technology. Per the manufacturer datasheet, the device provides overload protection, current limitation, short circuit protection, and thermal shutdown with auto-restart for harsh 12 V/24 V/42 V automotive DC environments. A smart high-side switch is a fully protected power distribution IC that sits between a microcontroller GPIO and a grounded load, replacing electromechanical relays and discrete MOSFET circuits. Within the broader taxonomy, the BSP752R belongs to the PROFET family of protected switches, which sits under smart power switches -> power management ICs -> semiconductors. Compared with a discrete MOSFET solution, the integrated approach embeds gate drive, protection logic, and diagnostic telemetry in one chip. Key features include reverse battery protection when paired with an external resistor, fast demagnetization of inductive loads (relays, solenoids, valves), an open-drain diagnostic output flagging overtemperature events, and a CMOS-compatible logic-level input. The 52 V transient rating makes the part compatible with automotive load-dump transients specified in common 24 V truck and bus systems. The architecture pairs an N-channel vertical power MOSFET with an on-chip charge pump that generates the gate voltage above the supply rail, plus a bandgap-referenced current limit and a thermal sensor tied to automatic restart logic. This monolithic integration allows the BSP752R to deliver 1.3 A continuous with predictable SOA behavior over -40 C to +150 C junction ranges. Typical applications include automotive body modules controlling LED lighting, relay/solenoid drivers, and small DC motors. Designers commonly deploy BSP752R in door-lock actuators, HVAC flap motors, and exterior lamp clusters where the open-drain diagnostic pin can be wired back to a body controller for fault reporting. When designing with BSP752R, place the device as close to the load connector as practical to minimize PCB inductance in the demagnetization path. A reverse-battery protection resistor in series with the supply pin is mandatory for true reverse-polarity immunity, and the diagnostic pin requires an external pull-up. This page synthesizes distributor pricing, drop-in alternatives in the same PG-DSO-8-6 footprint, and practical design notes that complement (and in places go beyond) what is found in the bare manufacturer datasheet.
BSP752RXUMA2 - 1.3A Smart High-Side Power Switch | Infineon
The Infineon BSP752RXUMA2 is a 1.3 A smart high-side N-channel power switch with integrated vertical DMOS FET and embedded protection, housed in a PG-DSO-8-6 (DSO-8-6) surface-mount package. It is part of Infineon's miniPROFET family and provides a single-channel 1:1 power switch/load driver architecture with on-state resistance in the 100-200 milliohm range, operating across an automotive/industrial supply envelope suitable for 12 V vehicle rails. The device includes built-in diagnostic feedback and protections that turn a discrete MOSFET, sense resistor, fuse, and protection circuitry into one IC. What is a high-side power switch? A high-side power switch sits between the supply rail (e.g., +12 V battery) and the load, replacing mechanical relays and discrete MOSFETs. The category hierarchy is: high-side switch -> load driver -> power distribution switch -> power management IC. By placing the switch on the high side, the load is grounded, simplifying wiring harnesses and improving short-circuit behavior versus low-side switching. Key features include 1.3 A continuous load current capability, integrated overload protection with active current limitation, short-circuit protection, thermal shutdown with auto-restart, overvoltage protection including load-dump transients, fast demagnetization of inductive loads, reverse-battery protection, and an open-load detection in the OFF state through an external resistor. The status feedback pin reports fault conditions to the microcontroller. According to the Infineon datasheet, the device operates over the automotive -40C to +150C junction temperature range and is qualified to AEC-Q100 standards for automotive environments. Architecturally, the BSP752RXUMA2 combines a vertical N-channel DMOS output stage with CMOS control logic, charge pump for gate enhancement, and bandgap-referenced protection comparators. The charge pump maintains VGS above threshold even at low supply voltages, while the protection comparators monitor drain current, junction temperature, and supply voltage independently and act within microseconds to safeguard the FET. Typical applications include automotive body electronics (door modules, seat controllers, mirror adjusters, interior lighting), industrial 24 V load driving, PLC digital outputs, and any application replacing an automotive relay or fuse-protected discrete MOSFET high-side path. The DSO-8-6 footprint is footprint-compatible with other miniPROFET family members for design reuse. When designing with this part, observe the maximum junction temperature of 150C and provide adequate copper pour on the PG-DSO-8-6 exposed pad for thermal dissipation. Choose external pull-up/pull-down values per the diagnostic pin's specified current to ensure reliable logic levels across temperature. This page synthesizes distributor pricing tiers, drop-in miniPROFET alternatives sourced from Infineon's product family and cross-brand parametric equivalents, and design notes not consolidated in any single manufacturer document.
BSP762TXUMA1 - 2A Smart High-Side Power Switch | Infineon
The Infineon BSP762TXUMA1 is a 2 A smart high-side N-channel power switch in a PG-DSO-8-6 (DSO-8) surface-mount package, belonging to Infineon's MINI-PROFET family of protected single-channel high-side switches. It integrates a power MOSFET, charge pump, and comprehensive protection circuitry to drive resistive, capacitive, and inductive loads directly from microcontroller I/O lines. A high-side power switch is a type of power distribution switch that sits between the positive supply rail and the load, providing controlled ON/OFF switching plus diagnostic feedback. In the broader product hierarchy, it belongs to power management ICs, specifically the power distribution switch / load driver category, and complements LDO regulators, DC-DC converters, and eFuse ICs by providing a robust, self-protected interface to the load. Key features of the BSP762TXUMA1 include a 2 A continuous load current capability, integrated reverse battery, overcurrent, short-circuit, over-temperature, overvoltage, and undervoltage lockout protection. The device operates over a -40 C to +150 C junction temperature range and includes load-dump protection suitable for 12 V automotive environments. Its integrated charge pump drives the internal N-channel MOSFET, achieving low Rds(on) without an external gate drive supply. The BSP762TXUMA1 implements a 1:1 power switch/driver architecture with a single input control pin and an open-drain status feedback pin for fault reporting. The PG-DSO-8-6 thermally-enhanced package provides a low thermal resistance path from the die to the PCB copper pour, enabling 2 A operation without an external heatsink in typical PCB layouts. Typical applications include 12 V automotive body electronics such as LED lighting drivers, solenoid and relay replacement circuits, small motor drivers, and resistive heating loads. It is also used in industrial PLC digital outputs and consumer white-goods appliance controls where MCU-driven high-side switching replaces mechanical relays. When designing with this part, ensure the PCB copper pour provides adequate heatsinking for the chosen load current. Place a 100 nF ceramic bypass capacitor close to the supply pin, and respect the diagnostic pin pull-up voltage limits to avoid damage during reverse-battery transients. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, delivering actionable information for design engineers and procurement teams evaluating the BSP762TXUMA1.
BSP772TXUMA1 - 2.6A Smart High-Side Power Switch | Infineon
The Infineon BSP772TXUMA1 is a 2.6 A smart high-side N-channel power switch housed in a PG-DSO-8-6 (8-pin SOIC with exposed pad) package, part of Infineon's Classic PROFET family. It integrates a single 1:1 power MOSFET with built-in protection, status feedback, and diagnostic features, delivering a monolithic load-driver solution that replaces discrete MOSFET + fuse + protection circuits. The device is specified for 2.6 A continuous load current and targets 12 V automotive and industrial rails. A high-side power switch (also called a smart high-side switch, high-side load driver, or PROFET) is a semiconductor device that sits between the positive supply rail and the load. Unlike a low-side switch that returns current to ground, a high-side switch allows ground-referenced loads (lamps, solenoids, motors) to be turned on and off without disturbing the load's reference. Smart variants integrate protection and diagnostics; the BSP772TXUMA1 belongs to the Classic PROFET subfamily, sitting within the broader category of power distribution switches -> PMIC -> power management IC -> semiconductor. Key features include over-current protection, over-voltage clamp, over-temperature shutdown, ESD protection, short-circuit protection, and an open-drain status flag pin for fault feedback to a microcontroller. The integrated charge pump drives the N-channel MOSFET gate, achieving low typical on-state resistance which minimizes conduction losses and thermal stress. The PROFET family is widely adopted in body electronics modules for driving lamps, motors, solenoids, and resistive heaters. Technically the device combines a vertical N-channel DMOS output stage with CMOS/BCD control logic on a single die. The integrated reverse-battery protection and ground-loss robustness allow direct connection to the 12 V automotive bus without external reverse-polarity components. The 8-pin SOIC with thermal pad (PG-DSO-8-6) provides low thermal resistance for dissipating load current losses in compact PCB areas. Typical applications include automotive body electronics (interior lighting, door modules, seat controllers), industrial 24 V/12 V load driving, relay replacement, and protected power distribution in PLC and HVAC systems. The device is also used in motorcycle and e-bike ECUs and as a protected USB VBUS switch in automotive head units. When designing with the BSP772TXUMA1, ensure input capacitance is placed close to the supply pin and that the tab/exposed pad is soldered to a sufficient copper pour for heat dissipation. The status pin requires an external pull-up resistor; the input (IN) pin is TTL/CMOS compatible. Avoid continuous operation at maximum current above 25C ambient unless proper thermal management is applied. This page consolidates distributor pricing, drop-in alternatives (including same-brand Classic PROFET siblings and cross-brand equivalents), and practical design notes not found in the standalone manufacturer datasheet.
BSP77E6433HUMA1 - 42V 2.17A Smart Low-Side Switch | Infineon
The Infineon BSP77E6433HUMA1 is a 42 V N-channel power FET packaged in a 4-pin (3+Tab) SOT-223 (PG-SOT223-4) surface-mount package, designed as an automotive-grade smart low-side switch with integrated ESD and overload protection. It belongs to Infineon's Classic HITFET™ 12 V family and is rated for a continuous drain current of approximately 2.17 A with logic-level gate drive, making it ideal for 12 V DC systems in vehicles. The device combines a vertical N-channel MOSFET with monolithic protection circuitry, replacing discrete MOSFET plus discrete driver designs with a single protected switch. A low-side switch is a semiconductor power switch placed between the load and ground, in contrast to a high-side switch placed between the supply and the load. Low-side switches are widely used for cost-sensitive, ground-referenced loads such as solenoids, relays, lamps, heaters, and small DC motors where the wiring return path can tolerate being switched. Within the broader semiconductor taxonomy, the BSP77 sits in the hierarchy: low-side switch → power distribution switch → load driver → power management IC → semiconductor. Infineon's HITFET family adds integrated protection features—overload, overtemperature, ESD, and active current limiting—that discrete N-channel MOSFETs require external circuitry to provide. Key features include a 42 V drain-to-source breakdown voltage providing substantial transient headroom above 12 V automotive rails, an active current limit, thermal shutdown with auto-restart, and ESD protection on the input pin. The logic-level input accepts standard 3.3 V or 5 V microcontroller GPIO signals directly, simplifying firmware-driven load control. The 4-pin SOT-223 (PG-SOT223-4) footprint exposes the drain tab for both electrical connection and thermal dissipation, with a low junction-to-ambient thermal resistance that supports sustained 2.17 A operation on minimum copper area. Architecturally, the BSP77 uses Infineon's Smart SIPMOS technology, integrating a vertical N-channel DMOS output stage with CMOS-compatible control logic and bandgap-referenced protection comparators on a single die. This co-integration allows the protection thresholds to track the output MOSFET's safe operating area, giving precise overload and short-circuit behavior across temperature. The monolithic approach reduces parasitic inductance compared to discrete solutions, improving switching performance and EMC. Typical applications include automotive body electronics such as LED drivers, small motor control (window lifters, mirror adjusters, door locks), relay and solenoid replacement, resistive heating elements (seat heaters), and general 12 V load switching in industrial 24 V systems with adequate derating. The integrated protection makes it especially suitable for applications where load faults (short to battery, stuck relay contacts) must not damage the ECU. When designing with this device, observe the Safe Operating Area in the manufacturer datasheet and ensure the tab is soldered to a copper area sized for the worst-case dissipation. Bypass the input pin with a 100 nF ceramic capacitor placed close to the IC to suppress ESD-induced transients. For inductive loads, add a freewheeling diode; the BSP77 does not include internal avalanche clamping for inductive turn-off. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet.
BSP78HUMA1 - 42V 3A Smart Low-Side Switch | Infineon HITFET
The Infineon BSP78HUMA1 is a 42V, 3A N-channel vertical power FET implemented in Smart SIPMOS technology, packaged in a PG-SOT223-4 surface-mount outline and qualified to AEC-Q100 for automotive use. It functions as a self-protected low-side switch integrating a logic-level input, ESD protection, overload protection, short-circuit protection, overvoltage protection (including load-dump transients), current limitation, and thermal shutdown with auto-restart. Maximum on-state resistance is 200 mΩ typical at room temperature, with a continuous load current capability up to 3 A. The integrated charge pump holds the gate above threshold during low-Vds operation, ensuring stable Rds(on) across the full operating range. A low-side switch is a power switch that connects the load to ground while the high side of the load sits at the supply rail. Compared with high-side switches, low-side drivers simplify N-channel MOSFET drive because the source reference is at ground, but they cannot detect load-side ground faults and they share the chassis/board ground with the controller. BSP78HUMA1 belongs to the broader HITFET family of Infineon protected switches - devices positioned between discrete MOSFETs (which require external protection) and full high-side PROFET switches, and they serve automotive body-electronics, industrial 24 V systems, and any application that needs a robust, logic-controlled ground-referenced switch. Key features include 4.5 V to 42 V operating supply range, logic-level input compatible with 3.3 V and 5 V microcontrollers, open-drain diagnostic output for fault feedback, very low standby current, and -40 °C to +150 °C operating junction temperature. The PG-SOT223-4 (TO-261-4) package with an exposed tab provides a low thermal resistance path to PCB copper, supporting sustained 3 A switching without external heatsinking in well-designed layouts. Typical applications span automotive body controllers driving resistive, inductive, or lamp loads, industrial PLC outputs, 24 V solenoid and valve drivers, LED lighting modules, and any 12 V/24 V ground-referenced load that benefits from on-die protection. The device is drop-in compatible with the broader Infineon HITFET family in the same SOT-223 footprint. When designing with the BSP78HUMA1, ensure the inductive load has a freewheeling path (clamp diode or TVS) and that the PCB tab is soldered to a sufficient copper pour to keep junction temperature within SOA. The diagnostic pin requires a pull-up resistor; floating it disables fault reporting. This page consolidates distributor pricing, parametric cross-reference alternatives, and design notes that complement the manufacturer datasheet for engineers evaluating a 12 V/24 V protected low-side switch.
BTF3050TEATMA1 - 3A 12V HITFET+ Low-Side Switch | Infineon
The Infineon BTF3050TEATMA1 is a 3 A N-channel low-side power switch from Infineon's HITFET+ family, housed in a PG-TO252-5-11 (DPAK-5) surface-mount package. It integrates an N-channel MOSFET power stage with 3.3 V/5 V CMOS-compatible logic inputs, on-chip ESD protection, current limiting, and adjustable switching slew rate for 12 V automotive and industrial loads. The device is qualified to AEC-Q100 for automotive use and supports an operating supply range of 3.0 V to 5.5 V on the logic supply and continuous drain current up to 3 A. A low-side switch (also called a low-side driver) is a type of power distribution switch that places an N-channel MOSFET between the load and ground, with the load tied directly to the supply rail. This topology is widely used in automotive body electronics, where it offers simple logic-level control, inherent short-to-ground protection, and easy paralleling of multiple channels. Low-side switches sit in the broader power-management hierarchy of load drivers -> power distribution switches -> power management ICs -> semiconductors, and are a complement to high-side switches such as Infineon's PROFET family. Key differentiating features of the BTF3050TEATMA1 include a 100 mOhm maximum on-state resistance (RDS(on)) at 25 C, an adjustable dV/dt slew-rate pin for EMI tuning, a 30 A internal current limit, status feedback, and a typical turn-on time of 15 us with turn-off of 30 us. Protection features include over-current, over-temperature, over-voltage, and reverse-battery ruggedness, making it suitable for harsh 12 V automotive environments where load-dump transients are common. The BTF3050TE uses a vertical N-channel MOSFET output structure with charge pump gate drive, allowing full enhancement at logic-level VGS. The integrated charge pump, ESD network and protective diodes are co-packaged in the same die as the power MOSFET, enabling a compact 5-pin DPAK footprint. This monolithic integration reduces external component count compared to discrete MOSFET + driver designs. Typical applications include driving automotive solenoids, relays, lamps, LED strings, small DC motors, and resistive heating elements. It is also widely used as a protected driver for industrial PLC outputs and process-control valves. The PG-TO252-5-11 (DPAK) package has a low thermal resistance (RthJA around 50 C/W on a 1 sq inch copper pour), supporting continuous 3 A operation with proper PCB thermal design. When designing with this part, ensure the PCB copper area under the tab is sufficient to dissipate I^2RDS(on) losses at worst-case ambient temperature. A 10 nF gate capacitor on the SR pin is the typical starting point for slew-rate adjustment, but the value must be tuned to the load's inductance to avoid ringing below the EMI limit. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with all parametric values cross-checked against the Infineon HITFET+ datasheet.
BTG70013A1ESWXUMA2 - 26.6A PROFET Wire Guard 12V High-Side Switch
The Infineon BTG70013A1ESWXUMA2 is a 26.6 A single-channel smart high-side power switch in the PROFET Wire Guard 12V family, housed in a PG-TSDSO-24-32 package with exposed pad. It integrates a vertical N-channel power MOSFET with 1:1 power switch/driver logic, on-chip protection, and digital diagnostics targeted at 12 V automotive and industrial body-electronic loads. The device operates from a nominal 12 V supply, supports load currents up to 26.6 A, and is qualified to ISO 26262 for safety-related automotive systems. A high-side switch is a power-distribution building block that sits between the supply rail (typically the automotive 12 V battery) and the load, replacing discrete fuses, relays, and MOSFET drivers. It belongs to the broader category of smart power switches (also called intelligent power switches, IPS, or PROFET devices), which integrate a power transistor, gate driver, current sense, and diagnostic feedback into one IC. Within a vehicle electrical/electronic (E/E) architecture, it sits under the body control module (BCM) and power distribution box, protecting wiring harnesses from over-current and short-circuit events while reporting fault status back to the MCU. Key specifications of the BTG70013A1ESWXUMA2 include a 26.6 A maximum load current, an active-high logic input, a selectable integrated I²t wire-harness protection function, an IDL pin for microcontroller wake-up from key-off mode, and an operating supply current under 60 µA in active key-off (idle) mode. Embedded protection features include over-current, over-voltage, over-temperature, reverse battery, and loss-of-ground protection per Infineon's PROFET datasheet. The device is rated for use with 12 V automotive loads and supports diagnostic feedback through a status / current-sense pin. The BTG70013A uses a vertical DMOS output stage driven by a charge-pump-assisted gate driver, enabling true rail-to-rail low-RDS(on) switching in a small PG-TSDSO-24-32 thermal-enhanced package. The integrated I²t characteristic lets designers select a wire-protection curve by external component choice, matching the thermal limit of the harness rather than a fixed silicon trip point. This is critical for AEC-Q100 and ISO 26262-compliant automotive wiring systems where the wire itself is the weakest thermal element. Typical applications include automotive body-electronic loads such as LED lighting modules, seat heaters, mirror heaters, auxiliary 12 V outlets, and small DC motor drivers. It is also used in industrial 24 V systems and truck / agricultural 24 V body controllers where 12 V-class smart switches are deployed per channel. The low idle current under 60 µA makes it suitable for permanently-live nodes that must not drain the battery during key-off parking. When designing with this part, ensure the PCB layout provides sufficient copper area on the exposed pad for thermal dissipation, place the input/bulk capacitor as close as possible to the VBB pin, and configure the I²t selection network per the application curve in the datasheet. The IDL wake pin must be wired to an MCU interrupt-capable GPIO to use the key-off wake feature; floating this pin disables the wake function but does not affect normal operation.
BTG7003A1EPWXUMA2 - 15.7A PROFET Wire Guard High-Side Switch | Infineon
The Infineon BTG7003A1EPWXUMA2 is a single-channel, 15.7 A high-side smart power switch from the PROFET™ Wire Guard 12 V family, housed in a PG-TSDSO-14-22 exposed-pad package. Built around an N-channel power MOSFET configured as a 1:1 high-side driver with active-high logic input, the device integrates wire-protection diagnostics (I²t), over-current, over-voltage, and thermal shutdown, and is qualified to ISO 26262 for use in automotive safety-relevant systems. Continuous load current is rated up to 15.7 A with a low 50 µA idle-mode quiescent current, making it suitable for energy-efficient body and chassis ECUs. A high-side switch (HSS) is a semiconductor load driver that sits between the supply rail (e.g., a 12 V automotive bus) and the load, controlling current return through the device. PROFET Wire Guard is a sub-category of protected MOSFET switches that adds on-die diagnostic and protection logic. This sits inside the broader hierarchy: smart power switch -> load driver -> power management IC -> semiconductor device. PROFET Wire Guard devices are designed specifically for 12 V automotive wiring harnesses, where they can detect and react to wire faults that classic fuses cannot. Key features of the BTG7003A1EPWXUMA2 include an operating voltage range of 6 V to 18 V (load-dump tolerant up to 40 V), 15.7 A continuous load current, 50 µA idle current, integrated I²t wire-protection, reverse-battery protection, and an integrated charge pump that provides true high-side switching with R_DS(on) of about 10 mΩ. The PG-TSDSO-14-22 package has an exposed thermal pad that minimizes junction-to-PCB thermal resistance, allowing the part to sustain high continuous currents in compact modules without an external heatsink. From an architecture standpoint, the device pairs a vertical N-channel power stage with on-die control logic including a charge pump, gate driver, current sense, and protection state machine. The I²t wire-protection algorithm emulates the thermal time constant of the wire harness, allowing the switch to predictably limit energy delivered into a fault before the conductor overheats. Infineon's ISO 26262 documentation streamlines integration into ASIL-rated systems. Typical applications include automotive body-control modules, seat-heater and seat-belt pretensioner drivers, LED lighting drivers, HVAC flap actuators, and generic 12 V resistive or inductive load switching. The device is best suited when designers need a single robust high-side channel rather than a multi-channel PROFET+ device, or where wire-protection certification is required. When designing with this device, ensure the load is truly single-channel and within 15.7 A; for higher current use a parallel PROFET+ part. Add a reverse-battery blocking diode or use the integrated feature, and follow Infineon's PCB layout guidance for the exposed pad. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
BTG70501EPLXUMA1 - 3A Smart High-Side Switch | Infineon PROFET
The Infineon BTG70501EPLXUMA1 is a 3 A automotive smart high-side power switch (PROFET +2 12V Load Guard) housed in a 14-pin PG-TSDSO exposed-pad package. It integrates a 1:1 N-channel power MOSFET driver with built-in current limiting at 3 A, comprehensive diagnostic feedback, and enhanced protection features for 12 V automotive power distribution. The part is qualified to AEC-Q100 for automotive use. A high-side smart switch (PROFET) is a type of power distribution switch that sits between the supply rail (typically a 12 V automotive battery) and the load, replacing discrete MOSFETs plus fuses with a single protected IC. The PROFET family sits inside the broader taxonomy: power distribution switch -> load driver -> power management IC -> semiconductor. Compared with a discrete N-MOSFET driven by a GPIO, a PROFET provides accurate current limiting, short-circuit protection, thermal shutdown, and load-dump immunity in one IC, simplifying PCB layout and improving reliability for body-electronics loads. Key features of the BTG7050-1EPL include a 3 A overcurrent trip, 2.7 V to 28 V supply range (Vcc), -40 C to +150 C junction temperature, current limit switch (CLS) mode for ADAS and power distribution, plus diagnostic outputs that signal open-load, short-to-battery, short-to-ground, and overtemperature events. The exposed-pad PG-TSDSO-14 package keeps the thermal path short for repetitive inrush loads such as LED arrays, solenoids, and small DC motors. The BTG7050-1EPL is built on Infineon's PROFET +2 12V smart-power process, which combines a vertical N-channel DMOS output stage with mixed-signal control logic on the same die. The current-limit loop is trimmed per device, which avoids the unit-to-unit variation seen in discrete polyfuse or PTC solutions and gives predictable behavior at cold-crank (Vbat dropping momentarily below 6 V) and load-dump (Vbat surges above 35 V) events. Typical applications include body-control modules driving LED lighting, relay replacement, seat-heater elements, mirror actuators, and infotainment peripherals. The wide Vcc range and AEC-Q100 qualification make it equally suitable for ADAS sensor rails and zonal-architecture power distribution. CLS mode is specifically tuned for power-distribution topologies where multiple PROFETs feed downstream ECUs. When designing with this part, follow Infineon's recommended PCB layout for the exposed thermal pad - solder the EP to a copper pour of at least 1 cm^2 to keep RthJA within the datasheet envelope under repeated inrush. Always check the inrush profile of the load (bulb, motor, capacitor bank) against the published I(SC) and E(AS) limits before selection. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, giving procurement and design engineers a single reference for evaluating the BTG70501EPLXUMA1 in 12 V automotive power-distribution designs.
BTG70902EPLXUMA1 - 2A PROFET+2 12V Smart High-Side Switch | Infineon
The Infineon BTG70902EPLXUMA1 is a 2 A single-channel smart high-side power switch from the PROFET+2 12V family, housed in a PG-TSDSO-14 package with an exposed thermal pad. It is designed for automotive 12 V load-driving applications and integrates one N-channel MOSFET output stage with a 1:1 input-to-output ratio, providing continuous load current up to 2 A with fixed current limiting and comprehensive on-chip protection. The device targets resistive, inductive, and capacitive loads in body electronics modules. A smart high-side switch, also called a PROFET (Protected MOSFET), is a self-protected power semiconductor that combines a power MOSFET driver with diagnostic and protection logic in a single package. It sits between a microcontroller and a grounded load, replacing discrete relay or fuse circuits. Within the broader product hierarchy it belongs to power distribution switches, then power management ICs, then semiconductor ICs. The PROFET+2 12V generation emphasizes low standby current, accurate current sense, and AEC-Q100 automotive qualification. Key features include fixed current limiting, short-circuit protection, over-temperature shutdown with latch behavior, over-voltage and under-voltage lockout, reverse battery protection, and slew-rate control for EMI mitigation. The integrated diagnostic interface reports fault status to the host MCU through the DEN pin, while the DSEL pin selects the active channel and the IN pin enables the output. These functions reduce external component count compared with discrete MOSFET designs. The BTG70902EPLXUMA1 uses a vertical N-channel DMOS output structure driven by a CMOS control block containing charge pump, bandgap reference, gate driver, and protection comparators. This monolithic integration enables fast fault response (typically microseconds) and consistent protection thresholds across temperature. The exposed pad of the PG-TSDSO-14 package provides a low thermal resistance path, supporting continuous 2 A operation on moderate PCB copper area without external heatsinking. Typical applications include automotive lighting (interior LED modules, tail lamps, courtesy lights), body control modules driving small motors and solenoids, heating elements such as seat heaters and mirror heaters, and resistive loads like reference grounds. The diagnostic output is particularly useful in ECU designs that require ISO 26262-style fault monitoring or end-of-line load verification. When designing with the BTG70902EPLXUMA1, follow Infineon PROFET application guidelines for input capacitor selection, PCB copper area, and reverse-battery protection. Use the DEN pin in normal-low idle mode to minimize quiescent current; do not leave IN floating, as this may cause undefined output behavior. This page synthesizes Infineon datasheet parameters, distributor pricing across DigiKey, Mouser, LCSC and Octopart, and engineering design considerations not found in any single source.
BTH60351EPLXUMA1 - 35mΩ 60V Smart High-Side Switch | Infineon
The Infineon BTH60351EPLXUMA1 is a 35 mΩ single-channel smart high-side power switch from the PROFET™ + 48V family, housed in a PG-TSDSO-14 exposed-pad package. It is built around an N-channel vertical power MOSFET with an integrated charge pump and provides up to 5 A continuous load current with adjustable current limitation, current-sense diagnosis, and comprehensive protective functions for 8 V to 60 V board nets (48 V automotive systems). A smart high-side switch is a semiconductor relay that connects a load (lamp, solenoid, motor winding, LED string) to the battery rail while the low-side control logic operates at 3.3 V or 5 V. Within the broader product taxonomy, the BTH60351EPLXUMA1 belongs to the high-side switch (HSS) family, which sits under power distribution switches (PDS), which in turn belong to power management ICs and ultimately the semiconductor category. Compared to a discrete MOSFET plus fuse, an integrated HSS adds diagnosis, slew-rate control, and self-protection without external components. Key features include a 35 mΩ typical on-state resistance at 25 °C, 3.3 V/5 V compatible logic inputs, electrostatic discharge (ESD) protection, optimized electromagnetic compatibility (EMC), very low standby current, and an analog current-sense pin (IS) for load diagnostics. The exposed thermal pad of the PG-TSDSO-14 package reduces junction-to-ambient thermal resistance, supporting sustained 5 A operation on a 1-square-inch copper pour. Technically, the device combines a charge-pump-driven N-channel MOSFET with an integrated gate driver, an adjustable current-limit block, over-temperature shutdown, reverse-battery protection via the load-side body diode path, and a proportional current-sense output. The 35 mΩ RDS(on) keeps conduction losses at roughly 0.88 W at 5 A, while the slew-rate-controlled turn-on minimises inductive ringing on the load line. Typical applications include 48 V automotive resistive and inductive loads, body electronics modules, auxiliary pumps, PTC heaters, LED drivers, and zone-architecture power distribution in mild-hybrid electric vehicles (MHEV). The wide 8-60 V input range also supports 24 V industrial loads. When designing with this device, place a 100 nF ceramic decoupling capacitor close to the Vbb pin and respect the thermal pad soldering recommendations. Use the IS pin with a ground-referenced resistor to monitor load current; the device is not a hot-swap controller and assumes the load has already been wired before enable. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.