电机驱动器
产品（261)
DRV8256ERGER - 50V 8A H-Bridge Motor Driver with Smart Tune | TI
The Texas Instruments DRV8256ERGER is a 50-V, 8-A H-bridge motor driver with integrated current sense and Smart Tune technology, delivered in a 24-pin VQFN (RGE) package measuring 4x4 mm. It supports bipolar control through PH/EN inputs (no IN1/IN2 PWM pins), integrates two N-channel power MOSFET half-bridges plus low-side current sensing, and operates from a single supply of 4.5 V to 48 V. The device is qualified for -40C to +125C ambient operation and includes comprehensive protection: VM undervoltage lockout, charge-pump undervoltage, overcurrent protection, overtemperature shutdown, and open-load detection. An H-bridge motor driver is a type of brushed DC or stepper motor driver that uses four switching elements arranged in an H topology to drive current in either direction through a single winding. H-bridge drivers belong to the broader family of motor drivers (brushed DC, stepper, BLDC) which in turn fall under power management ICs and discrete semiconductor categories. By integrating the FETs, gate drivers, current sense amplifier, and protection logic in one package, the DRV8256ERGER replaces discrete implementations that would otherwise require dozens of components. Key features include 8-A peak H-bridge output current (derated to ~4.5 A RMS depending on PCB copper area), integrated current sensing that eliminates an external sense resistor, Smart Tune technology that automatically adjusts dead time and decay mode to minimize audible motor noise and current ripple, and a 1.5 A peak gate-drive flyback clamp for inductive loads. The device supports both PWM (PH/EN) and independent half-bridge control modes. The architecture pairs a charge pump (for the high-side gate drive) with a current-shunt monitor on each low-side FET, feeding the integrated sense amplifier whose output appears on the SO pin as an analog voltage. Smart Tune combines four decay modes - slow decay, fast decay, mixed 30%, mixed 60% - and selects them dynamically based on motor current to suppress ripple current and acoustic noise without firmware tuning. Typical applications include brushed DC motors in robotic vacuums, small home appliances, e-bike valve actuators, industrial pumps, and consumer fans. The wide 4.5 V to 48 V supply range covers USB, single-cell Li-ion, lead-acid 12 V, and industrial 24 V / 36 V / 48 V rails. The integrated sense amplifier is particularly valuable in closed-loop torque or current control. When designing with the DRV8256ERGER, place the VM bulk capacitor as close to pins 5-6 and 19-20 (VM/GND) as possible. The exposed thermal pad (pin 24) must be soldered to a top-side copper pour of at least 1 cm^2 to stay within thermal limits at 8 A peak loads. Use 100 nF + 10 uF bypass directly on VM, and add a TVS diode across the motor terminals if the application includes long cable harnesses to absorb flyback transients. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical thermal/PCB layout notes for the DRV8256ERGER that are not consolidated in the TI datasheet alone.
DRV8301DCAR - 65V 3-Phase Gate Driver with Buck Regulator & SPI | Texas Instruments
The Texas Instruments DRV8301DCAR is a 65-V maximum three-phase gate driver with integrated dual current shunt amplifiers, a buck regulator, and an SPI interface, housed in a 56-pin HTSSOP (DCA) package with PowerPAD. It is designed to drive six N-channel power MOSFETs (three half-bridges) for sensored or sensorless brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) applications. The gate driver section supports a wide 8 V to 60 V motor supply range, while the integrated 1.5 A synchronous buck converter produces an auxiliary 3.3 V or 5 V rail for companion MCUs. A three-phase gate driver is a power-management IC that converts low-power PWM control signals from a microcontroller into the high-current gate-drive signals required by the high-side and low-side MOSFETs of each inverter leg. It sits between the digital control domain (logic-level PWMs) and the high-power motor domain (tens of volts and tens of amps), and is therefore classified within the broader hierarchy of motor drivers > motion controllers > power management ICs > semiconductor. By integrating the gate drive, current sensing, and auxiliary supply, the DRV8301 collapses what would otherwise be three separate ICs into a single device, simplifying BLDC inverter design. Key features include: a programmable 5 mA to 60 mA gate-drive current with adaptive dead-time insertion to prevent shoot-through; integrated dual current-shunt amplifiers with adjustable gain (10/20/40/80 V/V) and 5 µs settling time for FOC torque control; a 1.5 A, 0.8 V to 8.5 V adjustable buck regulator; SPI-configurable protection (overcurrent, overtemperature, undervoltage, gate-drive fault); and an operating temperature range of -40 °C to +125 °C. The HTSSOP-56 PowerPAD package offers θJA ≈ 31 °C/W when the exposed pad is soldered to sufficient copper area. Architecture-wise, the DRV8301 pairs a charge-pump-derived high-side bias supply with a bootstrap-capacitor-per-phase design, allowing 100% duty-cycle operation of the high-side FETs without external floating rails. The current-sense amplifiers use continuous-time chopper-stabilized op-amps to minimize offset drift, which directly improves the low-speed torque accuracy of sensorless FOC schemes. The SPI port allows in-system tuning of dead-time, current-sense gain, OC threshold, and buck VOUT, enabling firmware-controlled optimization for different MOSFET choices. Typical applications include drone (UAV) ESCs, e-bike / e-scooter traction drives, cordless power tools, HVAC fans and pumps, and small industrial servo drives. The DRV8301 is also the gateway IC on TI's well-known DRV8301-69M-KIT reference design for InstaSPIN-FOC motor control. When designing with this part, follow TI's MOSFET short-circuit ruggedness guidance and lay out the PowerPAD with at least 1 in² of 2-oz copper to keep the gate-driver junction within safe limits. This page synthesizes distributor pricing, drop-in alternatives, and application-focused design notes that complement the manufacturer datasheet. The DRV8301DCAR is specified in TI's datasheet revision F, available from ti.com/lit/ds/symlink/drv8301.pdf.
DRV8303DCAR - 65V 3-Phase Gate Driver w/ Dual CSA & SPI | TI
The Texas Instruments DRV8303DCAR is a 65-V maximum three-phase gate driver IC for BLDC and PMSM motor-drive applications, integrating three half-bridge pre-drivers, two current-shunt amplifiers, and an SPI-configurable register set in a 48-pin HTSSOP (DCA) package with PowerPAD. The device delivers up to 1.7-A peak source and 2.3-A peak sink gate-drive current per channel, supporting external N-channel MOSFETs in 6-to-600 V motor systems. A three-phase gate driver, also called a pre-driver or brushless DC motor driver, sits between an MCU/controller and the high-current power stage. It converts low-current PWM logic signals into high-current gate-drive waveforms capable of rapidly switching N-channel MOSFETs in a three-phase bridge, while providing critical protection features (dead-time insertion, bootstrap management, fault reporting) that the controller cannot deliver alone. Within a motor-control system it sits between the microcontroller (such as a C2000 or Sitara) and the three-phase inverter bridge. Key features include a wide 6-V to 60-V single-supply input, integrated bootstrap diodes with trickle-charge support, dual bidirectional current-shunt amplifiers with adjustable gain (5/10/20/40 V/VIA), SPI for configuring gain, dead time, and OC protection thresholds, and a 1.8-V/3.3-V compatible logic interface. Protection features include undervoltage lockout (UVLO) on both the gate-drive and bootstrap rails, overcurrent protection with configurable thresholds, thermal warning and shutdown, and a fault-output flag. The DRV8303 uses a bootstrap gate-driver architecture with an internal charge pump to support 100% duty-cycle PWM, eliminating the need for a separate isolated supply for the high-side drivers. The integrated dual current-shunt amplifiers save board space and BOM by removing the need for external op-amp CSA circuits in sensored and sensorless FOC applications. Typical applications include three-phase BLDC/PMSM motor drives (e.g., drones, e-bikes, robotics, industrial fans, pumps, and CNC spindles), EV traction auxiliaries, and 48-V telecom/server cooling fans. The SPI interface makes it particularly suited to digital motor-control loops using field-oriented control (FOC) or trapezoidal commutation. When designing with this device, choose external N-channel MOSFETs whose total gate charge (Qg) is well below 50 nC to stay within the 1.7-A source / 2.3-A sink envelope, and place the bootstrap capacitors (typically 100 nF ceramic) as close to the BSTx and SHx pins as possible to minimize parasitic inductance. Thermal management: the PowerPAD must be soldered to a sufficient copper area (≥1 in²) to keep junction temperature within the 150 °C shutdown limit at high ambient. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a typical manufacturer product summary.
DRV8308RHAR - 42V Sensored BLDC Gate Driver with SPI | TI
The Texas Instruments DRV8308RHAR is a 42-V maximum sensored sinusoidal control 3-phase brushless DC (BLDC) gate driver with SPI, housed in a 40-pin VQFN (RHA) 6x6 mm package. It controls sensored BLDC motors with a configurable gate-drive current of 10 mA to 130 mA and operates from 8.5 V to 32 V, with 42-V absolute maximum tolerance on the motor supply rail. What is a BLDC gate driver? A BLDC (brushless DC) gate driver is an integrated circuit that interfaces between a low-power microcontroller and the high-current three-phase inverter that drives a brushless DC motor. The gate driver sits in the power-management hierarchy below the MCU and above the power MOSFETs, providing level shifting, dead-time insertion, gate-drive strength control, and protection features (undervoltage, overcurrent, thermal) so the MCU does not have to handle high-current switching directly. Key features of the DRV8308RHAR include three Hall-sensor inputs for rotor-position feedback, an SPI interface for command and telemetry, configurable gate-drive current from 10 mA to 130 mA per MOSFET, integrated commutation logic, a closed-loop speed controller using CLKIN/FG, and support for both sensored trapezoidal and sensorless (BEMF) commutation. The 40-pin VQFN (RHA) package provides a low-thermal-resistance path for dissipating the gate-drive losses. The architecture combines a precision analog front-end for Hall sensors with a digital speed-control loop and three half-bridge predrivers. The configurable gate-drive current allows the designer to tune switching losses versus EMI for a given power MOSFET. An SPI port enables in-system configuration of current limits, PWM frequency, commutation mode, and read-back of fault status. According to TI product literature, the device is designed for fast closed-loop speed control with minimal MCU overhead. Typical applications include brushless DC fan and pump drives, e-bike and e-scooter traction controllers, cordless power tools, small HVAC blowers, and white-goods appliance motors. The sensored sinusoidal mode produces low acoustic noise and torque ripple, which is critical for fans and pumps used in noise-sensitive environments. When designing with the DRV8308RHAR, ensure the 8.5 V to 32 V motor supply is decoupled with low-ESR ceramic capacitors placed close to the VM and PGND pins. Select external N-channel MOSFETs with Vds ratings comfortably above the maximum motor supply, and program the gate-drive current via SPI to balance switching loss and EMI for the chosen MOSFET package. This page synthesizes current distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single source for parametric data, sourcing options, and PCB-layout guidance.
DRV8308RHAT - 42V Sensored BLDC Gate Driver w/ SPI | Texas Instruments
The Texas Instruments DRV8308RHAT is a 42-V max sensored sinusoidal control, 3-phase brushless DC (BLDC) gate driver with SPI, housed in a 40-pin VQFN (RHA) package measuring 6x6 mm. It functions as a pre-driver that controls the gates of six external N-channel MOSFETs with a configurable gate-drive current of 10 mA to 130 mA, enabling optimized switching characteristics across a wide motor-speed range. Motor commutation is driven by Hall sensor inputs, and once a consistent rotor speed is reached the DRV8308 transitions from sensored trapezoidal commutation to sensorless sinusoidal commutation using a single Hall sensor. A brushless DC (BLDC) motor controller is an integrated circuit that sequences power to the three stator windings of a brushless motor in the correct order, converting DC bus voltage into rotating magnetic fields. Within the broader product hierarchy, BLDC motor controllers belong to motor-driver ICs, which are a subset of motion control and ignition ICs within power management. The DRV8308 specifically sits in the gate-driver (pre-driver) category because it does not contain integrated power FETs; instead, it controls external MOSFETs, allowing designers to scale the power stage for higher current motors than integrated-driver ICs can support. Key specifications include an 8.5 V to 32 V (42 V abs max) supply-voltage range, integrated SPI interface for parameter tuning, configurable gate-drive current (10 mA to 130 mA), cycle-by-cycle current limit, and built-in protection including undervoltage lockout, overcurrent protection, and thermal shutdown. The device supports both sensored and sensorless sinusoidal control, enabling smooth low-speed torque and quiet high-speed operation. Hall-sensor inputs are configurable for 60-degree or 120-degree mechanical placement. Typical applications include cordless power tools, e-bikes and electric scooters, drones and multicopter flight controllers, CPU cooling fans, pumps, and small HVAC blowers. The wide 8.5-32 V supply range is compatible with both single-cell Li-ion (with boost) and multi-cell Li-ion packs up to 8S, while the configurable gate drive allows pairing with low-side MOSFETs of various RDS(on) and Qg values to optimize efficiency and EMI for each motor platform. When designing with the DRV8308RHAT, ensure the SPI pull-up resistor on the SDATA line is sized correctly for the selected clock rate, and that the bootstrap capacitors are placed close to the BSTx pins with short traces to minimize switching losses and ringing. The thermal pad of the VQFN-40 must be soldered to a copper pour of at least 1 square inch for reliable operation at sustained high gate-drive currents. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select and source the DRV8308RHAT with confidence for BLDC motion-control designs.
DRV8313PWPR - 2.5A Triple 1/2-H Bridge Driver | TI
The Texas Instruments DRV8313PWPR is a triple 1/2-H bridge driver designed for three-phase brushless-DC motors and other loads. It integrates N-channel power MOSFETs in a 1/2-H bridge configuration, providing up to 2.5A continuous output current per channel and 3A peak. The device operates from a supply voltage range of 8V to 60V, making it suitable for a wide range of industrial and consumer applications. Housed in a 28-pin HTSSOP (PWP) package, the DRV8313PWPR offers a compact solution for motor control. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the higher voltage and current needed to drive a motor. The DRV8313PWPR is a triple 1/2-H bridge driver, meaning it contains three independent half-bridge outputs, each capable of sourcing or sinking current. This configuration is ideal for driving three-phase brushless-DC motors, where each phase is connected to one half-bridge. The device also supports independent control of each half-bridge, allowing it to drive solenoids, relays, or other loads. Key features of the DRV8313PWPR include a wide operating voltage range of 8V to 60V, low on-resistance MOSFETs for high efficiency, and overcurrent, overtemperature, and undervoltage lockout protection. The device also features a low-power sleep mode to reduce quiescent current when the motor is not running. These features make it a robust choice for demanding motor control applications. The DRV8313PWPR uses a simple PWM interface, allowing direct connection to a microcontroller's PWM outputs. Each half-bridge can be controlled independently, enabling flexible motor control schemes such as trapezoidal or sinusoidal commutation. The device also includes a current-sense output that can be used for closed-loop current control, enhancing system performance. Typical applications include three-phase brushless-DC motor drives for fans, pumps, and robotics, as well as solenoid drivers and other inductive loads. The wide voltage range and high current capability make it suitable for both 12V and 24V systems, common in industrial and automotive environments. When designing with the DRV8313PWPR, ensure adequate PCB copper area for heat dissipation, especially at high currents. The exposed thermal pad should be soldered to a large ground plane to improve thermal performance. Additionally, place decoupling capacitors close to the power supply pins to minimize voltage transients.
DRV8323RSRGZR - 65V 3-Phase Smart Gate Driver with Buck Regulator | Texas Instruments
The Texas Instruments DRV8323RSRGZR is a 65-V maximum three-phase smart gate driver with integrated buck regulator, three current-shunt amplifiers, and an SPI interface, housed in a 48-pin VQFN (RGZ) 7x7 mm package with an operating range of 6 V to 60 V on the motor supply. What is a three-phase smart gate driver? In motor drive systems a three-phase smart gate driver is a power-management IC that sits between a low-power MCU/controller and the high-current N-channel power MOSFETs that commutate a three-phase brushless DC (BLDC) or permanent-magnet synchronous motor (PMSM). It provides level shifting, gate-drive current, fault protection, and current sensing, replacing dozens of discrete components and shrinking the inverter stage to a single chip. Within the broader taxonomy: gate driver -> motor driver -> power management IC -> semiconductor. Key features include a wide 6 V to 60 V operating range (suitable for 12 V, 24 V and 48 V industrial buses), integrated 3.3 V3/3 LDO for MCU supply, integrated 0.7 A buck regulator, three integrated current-shunt amplifiers supporting low-side or in-line sensing, integrated SPI for configuration and fault telemetry, and programmable gate-drive current up to 1 A peak source / 2 A sink with adjustable dead time and slew-rate control. Protection features include VM undervoltage lockout, VCP charge-pump undervoltage, gate-drive fault, overcurrent (OCP), overtemperature (OTSD), and motor-locked detection with fault pin indication. The DRV8323R architecture combines a smart gate driver (DRV8323 base) with an integrated buck converter and three dedicated current-sense amplifiers, eliminating the need for external op-amps and DC-DC converters that traditionally accompany three-phase FET bridges. The internal charge pump supports 100% duty-cycle high-side drive, while the SPI bus exposes 16 configuration and 12 status registers for diagnostics, making it suited to FOC, trapezoidal and sinusoidal commutation schemes. The 48-pin QFN package offers a low-inductance ground reference and Power-PowerPAD thermal pad for high-current operation. Typical applications include cordless power tools, e-bikes and e-scooters, drones and UAVs (multirotor ESCs), automated guided vehicles (AGVs), robotic vacuum cleaners, white goods (washing machines, refrigerators with BLDC compressors), industrial fans and pumps, and 48 V server fans. The wide VIN range and integrated buck make it ideal for battery-powered tools where multiple rails must be generated from a single pack. When designing with the DRV8323RSRGZR, follow the datasheet layout guidelines: place the three bootstrap capacitors (CBST) as close as possible to the BST_X and OUT_X pins, and use a low-ESR 1 A ceramic on VM and VCP. Use a 4-layer PCB with a continuous ground pour stitched around the RGZ package to handle the gate-driver switching transients. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including a side-by-side comparison versus the DRV8320, DRV8353, and DRV8313 families.
DRV8343SPHPRQ1 - Automotive 3-Phase Smart Gate Driver | TI
The Texas Instruments DRV8343SPHPRQ1 is an automotive-grade, three-phase smart gate driver for 12-V to 24-V battery systems, integrating three half-bridge gate drivers and three current-sense amplifiers in a 48-pin HTQFP (7x7 mm) PowerPAD package. It provides 5.5 V to 60 V operating range, supports N-channel MOSFET half-bridges, and includes an SPI interface for fault monitoring and configuration, plus independent source/drain pins enabling solenoid-style control. A gate driver IC is a power-management device that sits between a low-power MCU/controller and the high-current N-channel MOSFETs of an inverter. The DRV8343-Q1 family is a "smart" gate driver: it integrates gate-drive buffers, charge-pump and bootstrap supplies, current-shunt amplifiers, and protection logic. It belongs to the broader hierarchy of motor driver IC -> three-phase gate driver -> brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) inverter -> power management -> semiconductor IC. Key features include three integrated current-shunt amplifiers with programmable gain (via SPI), 1-A peak gate-drive current, integrated charge-pump and bootstrap for 100% duty-cycle high-side drive, independent high-side/low-side control for solenoid applications, and comprehensive protection: VDS overcurrent, VGS fault, undervoltage, thermal warning, and thermal shutdown. The DRV8343SPHPRQ1 (SPI variant) gives designers real-time fault telemetry and configurable parameters versus the H/W variant. Architecturally, the device pairs a charge pump for the high-side floating rails with a linear regulator for the low-side gate supply, plus three low-offset op-amps sized for current-sense shunts. This integration reduces BOM count versus discrete solutions, improving automotive inverter reliability and shrinking PCB area for under-hood motor control. Typical applications include 12-V/24-V automotive three-phase BLDC and PMSM motors such as electric water pumps, oil pumps, HVAC blowers, e-compressors for electric-vehicle HVAC, electric power steering (EPS) auxiliary drives, traction auxiliaries, and traction inverters up to several kW. When designing with the DRV8343-Q1, follow datasheet MOSFET selection guidance, place the shunt resistors near the SP/SN pins to minimize Kelvin-loop error, and add a thermal pad with adequate copper to keep junction temperature below the 150 C shutdown threshold. This page synthesizes distributor pricing, AEC-Q100 qualified drop-in alternatives (same 48-HTQFP footprint), and practical layout guidance not found in the manufacturer datasheet alone.
DRV8350FHRTVR - 102V 3-Phase Smart Gate Driver | Texas Instruments
The Texas Instruments DRV8350FHRTVR is a 102-V maximum three-phase Functional Safety Quality-Managed smart gate driver for brushless DC (BLDC) motor applications, integrating three half-bridge MOSFET drivers in a 32-pin WQFN (5x5 mm) package. Headline parameters include a 102-V abs-max supply rating, integrated 250-mA/750-mA adjustable gate-drive current settings, and hardware-interface (HW) variant SPI-less control with a 5x5-mm WQFN RTV footprint. The device drives six external N-channel MOSFETs configured as three half-bridges, supporting 1-PWM, 3-PWM, and 6-PWM commutation modes. What is a smart gate driver? A smart gate driver is an integrated circuit that sits between a microcontroller's low-voltage PWM outputs and the high-power N-channel MOSFETs of a motor inverter. By embedding level shifting, dead-time generation, gate-drive current regulation, and protection (overcurrent, overtemperature, undervoltage, and short-circuit), the smart gate driver replaces dozens of discrete components and reduces PCB area while improving reliability. The DRV8350F belongs to the broader category of three-phase motor drivers, which sit between microcontrollers and motor windings in the BLDC system hierarchy: MCU -> gate driver -> power MOSFETs -> BLDC motor. Key features include integrated charge-pump and bootstrap supply for 100% duty-cycle high-side drive, a programmable dead time, and a 75-V wide common-mode CSA (current shunt amplifier) with adjustable gain. The hardware variant eliminates SPI register access, simplifying firmware and reducing MCU overhead. Functional Safety Quality-Managed documentation includes failure modes, effects, and diagnostics analysis (FMEDA) and a safety manual, which is uncommon for gate drivers and valuable for IEC 61508 / ISO 26262 development. Architecture combines a charge-pump regulator (for low supply conditions), three bootstrap diodes, three low-side gate drivers, three high-side gate drivers, and an integrated current-shunt amplifier. The DRV8350FHRTVR is the "F" Functional Safety variant of the DRV835x family, which also includes the DRV8350 (non-functional-safety) and DRV8353 (with integrated buck regulator) derivatives. Typical applications include cordless power tools, e-bikes, e-scooters, drones, robotics, small pumps, and fans where 100-V absolute-max ratings and 3-phase brushless drive are required. The HW interface makes it well-suited for cost-sensitive designs without SPI firmware overhead. Choose this part when you need a 100-V class three-phase gate driver with functional-safety collateral but without an integrated buck. When designing with the DRV8350FHRTVR, ensure the SHx pins have local 0.1-uF + bootstrap-capacitor ceramic bypass and that the GVDD regulator cap is sized per datasheet for 4.7 uF or larger. The CSA inputs must be biased so that 0-A current sits near mid-supply to maximize linear input range.
DRV8350HRTVR - 102V 3-Phase Smart Gate Driver | Texas Instruments
The Texas Instruments DRV8350HRTVR is a 102-V maximum three-phase smart gate driver for brushless DC (BLDC) motor applications, housed in a 32-pin WQFN (RTV) package measuring 5x5 mm. It integrates three half-bridge gate drivers capable of sourcing 1 A and sinking 2 A peak gate current, with a wide 6-V to 95-V operating supply range and integrated bootstrap, charge pump, and dual LDO architecture for high-side/low-side gate drive. The part operates from -40C to +125C junction temperature, making it suitable for industrial automation, e-mobility, and white-goods environments. What is a three-phase smart gate driver? A smart gate driver is an integrated circuit that sits between a microcontroller (MCU) and the discrete power MOSFETs (or GaN/IGBTs) of a three-phase inverter. It level-shifts low-voltage PWM signals to the high-side gate drive supply, provides strong gate sourcing/sinking currents for fast switching, and typically includes protection features such as undervoltage lockout, dead-time insertion, and shoot-through prevention. Smart gate drivers are a sub-category of motor driver ICs, which themselves fall under the broader power management and motion control semiconductor taxonomy. Key features include a hardware (HW) interface variant (no SPI), integrated 3-phase charge pump for 100% duty-cycle support, adjustable dead time, and protection functions including VDS overcurrent sensing (via external shunt), gate-drive undervoltage lockout (UVLO), and thermal shutdown. The integrated dual LDO (5 V and 3.3 V) supplies the MCU and housekeeping circuits without external regulators, simplifying BOM. The hardware interface uses six PWM inputs (3x high-side, 3x low-side) plus enable and fault flags. Typical applications include field-oriented control (FOC) of BLDC/PMSM motors in e-bikes, drones, cordless tools, and small industrial pumps; sinusoidal current control of appliance motors; and trapezoidal commutation of ceiling fans and pumps. The DRV8350H variant is preferred when the design MCU already performs current control and only needs gate-drive and protection, eliminating SPI register overhead. Design considerations include thermal management: at 1 A continuous gate current and high switching losses, the 32-pin WQFN EP package requires an exposed thermal pad with substantial copper pour. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
DRV8350RSRGZT - 102V 3-Phase Smart Gate Driver with Buck Regulator | Texas Instruments
The Texas Instruments DRV8350RSRGZT is a 102-V maximum, 3-phase smart gate driver for brushless DC (BLDC) motor applications, integrating an optional buck regulator and triple low-side current-shunt amplifiers in a 48-pin VQFN (RGZ) 7x7 mm package with exposed thermal pad. Operating across 9-V to 100-V supplies, the device drives three external N-channel MOSFET half-bridges and supports SPI-based configuration of slew rate, current-shunt gain, and protection thresholds. A gate driver is a power-electronics IC that accepts low-power logic-level PWM commands and translates them into the high-current gate-drive signals required to switch MOSFETs or IGBTs in a half-bridge. The DRV8350 sits in the 'smart gate driver' category, which adds integrated current sensing, adjustable drive strength, and on-chip protection. Its parent taxonomy extends from gate driver to motor driver to motor control IC to power management semiconductor. Key features include a smart gate-drive architecture with adjustable 1.5 A / 0.5 A / 0.25 A source/sink current settings for EMI tuning, VGS handshake circuitry that prevents simultaneous half-bridge conduction (shoot-through), integrated triple low-side current-shunt amplifiers with programmable gain, an internal 3.3-V/5-V selectable buck regulator for auxiliary rails, and comprehensive protection including VM undervoltage lockout, gate-drive over-voltage, and thermal shutdown. The VQFN-48 (RGZ) 7x7 mm package provides low RDS(on) thermal paths. The DRV8350 is built on TI's 100-V BCD process, supporting switching frequencies up to 200 kHz per phase and providing TTL-compatible inputs that interface directly with 3.3-V or 5-V MCUs such as C2000 or Sitara. The integrated current-shunt amplifiers eliminate external op-amps, while the SPI interface enables per-channel diagnostics for safety-critical systems. Typical applications include 3-phase brushless DC motor control in industrial fans, pumps, and e-bikes; cordless power tools; 48-V e-mobility; servo drives; and robotic actuators. The wide 9-V to 100-V input also supports solar pump inverters and 24-V/36-V/48-V battery-powered traction. When designing with this device, ensure that the bootstrap capacitors on each half-bridge are sized for the worst-case PWM duty cycle and that sufficient bulk capacitance is placed at VM. TI's SLAA851 application note provides detailed bootstrap-capacitor sizing guidance and recommended MOSFET selections.
DRV8350SRTVR - 102V 3-Phase Smart Gate Driver | Texas Instruments
The Texas Instruments DRV8350SRTVR is a 102-V maximum three-phase smart gate driver for brushless DC (BLDC) motor applications, integrating three half-bridge gate drivers plus a SPI-configurable block in a 32-pin WQFN (RTV) package with 5x5 mm body. Headline parameters include a 102-V abs-max VM rating, 6-V to 95-V recommended VM operating range, integrated 3.3-V LDO, programmable slew rate, and SPI for current shunt amplifier, OCP, and dead-time configuration. The device targets 1.5-A to 5-A peak motor phase current when used with suitably rated external power MOSFETs. A three-phase smart gate driver is a mixed-signal IC that sits between a microcontroller/MCU and the three half-bridges of external N-channel power MOSFETs in a BLDC/PMSM inverter stage. It accepts six low-power PWM control inputs (or one to three PWMs with commutation) and produces gate-drive signals capable of switching the high-side FETs with a bootstrap supply and the low-side FETs with VGS drive from VM. As part of the power management hierarchy, it sits between the gate driver family and the broader class of motor driver and motion control ICs, providing the analog/digital interface between low-voltage logic and high-current power conversion. Key differentiating features include integrated charge-pump ready architecture for 100% duty-cycle high-side drive, three integrated current-shunt amplifiers (CSA) with adjustable gain and bidirectional support, programmable dead time (0.05 ns to 4 us depending on configuration), and comprehensive fault protection: VMOT undervoltage, VDS overcurrent on each FET, gate-driver fault, thermal warning/shutdown, and charge-pump undervoltage. The SPI variants (DRV8350S) also expose registers for fine tuning of CSA gain, OCP threshold, blanking time, and dV/dt control via the gate-drive current bits. Typical applications include field-oriented control (FOC) BLDC/PMSM motors in e-bikes, drones, cordless power tools, pumps, fans, and small HVAC blowers, as well as industrial servo drives in the 24-V to 80-V bus range. The integrated CSAs reduce BOM count versus discrete op-amp solutions and the wide VM range supports battery packs from 6S Li-ion (25.2V max) to industrial 48-V to 72-V systems. The device is pin-compatible with the DRV8353, DRV8353S, and DRV8323RS in the same WQFN-32 footprint, simplifying platform design across product tiers. When designing with the DRV8350SRTVR, ensure the VM decoupling (4.7 uF X7R minimum per VM pin) and the VDRAIN/CP bootstrap network is per the datasheet. Verify thermal performance with worst-case VM and switching loss; the WQFN-32 (RTV) package exposes a thermal pad that must be soldered to a sufficiently large copper pour. Use the SPI to log fault registers in production for field diagnostics.
DRV8350SRTVT - 102V 3-Phase Smart Gate Driver WQFN-32 | TI
The Texas Instruments DRV8350SRTVT is a 102-V maximum three-phase smart gate driver for brushless DC (BLDC) motor applications, integrating three half-bridge gate drivers in a 32-pin WQFN (RTV) 5x5 mm package. It supports a wide operating supply range of 9 V to 100 V, drives external N-channel MOSFETs at up to 1 A peak gate-drive source / 2 A sink, and includes optional integrated buck regulator and triple low-side current shunt amplifiers. What is a three-phase smart gate driver? A three-phase smart gate driver is an integrated power-stage controller that converts low-power PWM logic signals from a microcontroller into high-current gate-drive signals for the three half-bridges of a three-phase BLDC or PMSM motor. It sits between the digital control domain (MCU + PWM) and the power domain (MOSFETs + motor windings) inside the power-management and motor-control IC hierarchy. The "smart" designation means the driver handles dead-time insertion, shoot-through protection, current sensing, and fault reporting autonomously, removing timing-critical tasks from the MCU. Key features include adjustable slew-rate control for EMI tuning, a VGS handshake mechanism that detects MOSFET readiness, integrated protection (UVLO, overcurrent, thermal shutdown, and gate-drive short protection), an SPI interface for configuration and telemetry, and an integrated 3.3V/5V buck regulator for auxiliary supply. The DRV8350S variant provides the SPI control interface, while the DRV8350H variant uses hardware pins. The DRV8350SRTVT uses a charge-pump architecture for the high-side gate supply that supports 100% duty-cycle operation. Triple low-side current-shunt amplifiers enable precise current sensing for Field-Oriented Control (FOC) and trapezoidal commutation. The device operates across -40C to +125C junction temperature and includes comprehensive fault diagnostics accessible via SPI status readback. Typical applications include cordless power tools (drills, saws, leaf blowers), e-bike and e-scooter traction drives, HVAC blower fans, robotic vacuum cleaners, small drones and BLDC pumps, and white-goods motor control. The SPI interface enables closed-loop tuning of gate-drive strength to balance EMI versus switching loss. When designing with the DRV8350SRTVT, ensure sufficient decoupling on VM (1 uF + 100 nF X7R), place gate-drive resistors close to the IC outputs, and use the integrated buck regulator for housekeeping supply. Drive strength is selectable via SPI, allowing the same BOM to cover 1 kW to 5 kW motor platforms. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design considerations not collated in the manufacturer datasheet, providing an engineering decision resource for selecting the DRV8350 family.
DRV8353SRTAR - 102V 3-Phase Smart Gate Driver | Texas Instruments
The Texas Instruments DRV8353SRTAR is a highly integrated three-phase smart gate driver designed for brushless DC (BLDC) motor applications. It operates from a supply voltage of 9V to 100V (102V absolute maximum) and is available in a 40-pin WQFN (RTA) package measuring 6x6 mm. This device integrates three half-bridge gate drivers, optional current shunt amplifiers, and an optional buck regulator, making it a compact solution for motor control systems. A smart gate driver is a specialized integrated circuit that controls the external power MOSFETs in a motor drive inverter. It translates low-voltage logic signals from a microcontroller into high-current gate drive signals, ensuring efficient and reliable switching of the power stage. The DRV8353 belongs to the DRV835x family, which is part of TI's motor driver portfolio, ultimately falling under power management ICs. This hierarchy places the device within the broader category of motor control and power conversion semiconductors. Key features of the DRV8353SRTAR include adjustable slew rate control for EMI performance, VGS handshake and dead-time management, and a SPI interface for configuration and diagnostics. The device supports a wide operating temperature range of -40°C to 125°C, making it suitable for industrial and automotive environments. The integrated current shunt amplifiers enable precise current sensing without external op-amps, reducing BOM cost and board space. Technically, the DRV8353 uses a smart gate drive architecture that monitors the gate-to-source voltage (VGS) to ensure proper turn-on and turn-off of the external MOSFETs. This reduces the risk of shoot-through and improves system reliability. The adjustable slew rate allows designers to optimize switching speed versus EMI, which is critical in noise-sensitive applications. The device also includes protection features such as undervoltage lockout (UVLO), overcurrent protection, and thermal shutdown. Typical applications include industrial motor drives, robotics, power tools, and automotive systems such as electric power steering and cooling fans. The wide input voltage range and integrated features make it ideal for both 12V and 48V systems. The SPI interface allows real-time monitoring and configuration, enabling advanced motor control algorithms. When designing with this device, ensure proper PCB layout with adequate copper pour for thermal dissipation, and place decoupling capacitors close to the power pins. The gate drive current and slew rate should be selected based on the external MOSFETs' gate charge to optimize switching performance.
DRV8353SRTAR-Q1 - 100V 3-Phase Smart Gate Driver SPI | TI
The Texas Instruments DRV8353SRTAR-Q1 is an AEC-Q100 qualified, 9-V to 100-V three-phase smart gate driver for BLDC and PMSM motors, housed in a 40-pin WQFN (RTA) 6x6 mm package and configurable via SPI. It integrates three half-bridge gate drivers with smart gate-drive architecture, adjustable slew-rate control, and optional triple low-side current shunt amplifiers for precise motor phase current sensing. A three-phase gate driver is a power-management IC that controls the external MOSFETs forming the three half-bridges of an inverter stage, providing the gate charge, protection, and control interface between an MCU and the power stage. Within the power hierarchy, it sits above discrete MOSFET drivers and below full motor-controller SoCs, bridging control electronics and the power stage. Key features include smart gate drive with VGS handshake and automatic handshake modes, IDRIVE current and slew-rate adjustability for EMI control, integrated 100% duty-cycle support and IVCP tri-level input, plus integrated protections: VDS overcurrent monitor, UVLO, OCP, OTS, and GDF fault reporting with SPI fault registers. The SPI interface enables full register-level configuration of gate-drive current, slew rate, and CSA gain. The smart gate-drive architecture allows engineers to tune MOSFET switching speed independently for turn-on and turn-off events, balancing EMI, efficiency, and di/dt-related protection. The on-chip current shunt amplifiers (programmable gain) enable low-side current sensing for FOC and trapezoidal control without external op-amps. Typical applications include automotive 48V BLDC pumps, fans, and traction auxiliaries, e-bike and power-sport motor inverters, industrial servo drives, drones, and power tools. The -40C to +125C operating range and AEC-Q100 qualification make it suited for harsh automotive environments. Design tip: size the IDRIVE setting to the external MOSFET gate charge to control switching slew; overly aggressive gate drive increases radiated EMI and VDS overshoot risk on the 100V rail.
DRV8376HQNLGRQ1 - Automotive 70V 4A BLDC Driver | TI
The Texas Instruments DRV8376HQNLGRQ1 is an automotive-grade, three-phase brushless-DC (BLDC) motor driver with integrated current sensing, designed for 4.5V to 65V motor supplies. It integrates three 1/2-H bridges with 70V absolute maximum capability and a very low RDS(on) of 400 mOhm (high-side plus low-side) to enable high-power drive capability, delivering up to 4A peak output current in a 28-pin VQFN (6x5mm) exposed-pad package operating from -40C to +125C. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller into the high-current, high-voltage signals needed to drive a motor. The DRV8376-Q1 belongs to the gate driver and integrated power stage family, positioned between the MCU and the three-phase motor in the power electronics hierarchy. It provides the power amplification, current feedback, and protection layers required in modern automotive and industrial motion systems. Key features include integrated current sensing that eliminates external sense resistors, reducing BOM cost and board area. The device supports PWM control with a highly configurable interface through hardware pins or registers, allowing flexible current limiting, slew-rate control, and fault response tuning. Protection features include overcurrent, overtemperature, and undervoltage lockout with fault reporting, safeguarding the device, motor, and system. The DRV8376-Q1 uses an NMOS power-stage architecture in a three-phase bridge configuration. The low 400 mOhm RDS(on) minimizes conduction losses, improving thermal performance and efficiency. The integrated sense-FET current sensing provides accurate current feedback without the power loss of external shunts, enabling precise torque control and stall detection in FOC and trapezoidal control schemes. Typical applications include automotive BLDC motors such as electric power steering (EPS), engine cooling fans, oil pumps, and fuel pumps. AEC-Q100 qualification and the 4.5V to 65V input range suit both 12V and 24V automotive systems, as well as industrial drives and robotics requiring integrated sensing. When designing with this device, ensure proper PCB layout with adequate copper area on the VQFN exposed pad for thermal dissipation, and place decoupling capacitors close to the power pins. Calibrate the current-sense gain setting for accurate torque control.
DRV8426PWPR - 35V 1.5A Bipolar Stepper Driver | Texas Instruments
The Texas Instruments DRV8426PWPR is a 35-V, 1.5-A bipolar stepper motor driver with integrated current sensing and 1/256 microstepping, housed in a 28-pin HTSSOP (PWP) package with PowerPAD exposed thermal pad. It integrates two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current-sense circuitry, eliminating the need for external sense resistors. The device accepts STEP/DIRECTION inputs and supports up to 1.5 A full-scale output current (PCB-dependent). A stepper motor driver is an integrated power stage which converts low-power logic-level step and direction signals into the high-current phase excitation waveforms required to commutate a two-phase bipolar stepper. Modern stepper drivers integrate the dual H-bridge power MOSFETs, gate drivers, current regulation loop, microstepping indexer, and protection features onto a single IC, reducing PCB area and BOM cost compared with discrete solutions. The DRV8426 belongs to the stepper driver / motor driver family, which sits under the broader power management IC category in the semiconductor taxonomy. Key features of the DRV8426PWPR include 1/256 native microstepping for smooth motion, internal current sensing that removes external sense resistors, an integrated charge pump for the high-side N-FET gate drive, and a low-power nSLEEP pin. The device also offers smart-tune ripple control and decay modes for adaptive current regulation, a fault indicator (nFAULT) output, and a wide 4.5 V to 35 V operating supply range. An internal voltage reference and digital indexer let the MCU control position with only step pulses. The DRV8426 uses a mixed-signal architecture: a digital control block interprets STEP/DIR and config registers while two H-bridge power stages deliver PWM-modulated current at up to 1.5 A per phase. Integrated current-sense comparators and the smart-tune decay algorithm minimize torque ripple and audible noise, achieving smoother motion than fixed-decay competitors. The exposed thermal pad on the HTSSOP-28 package keeps theta_JA low for sustained 1.5-A operation on moderate copper pours. Typical applications include 3D printers, CNC machines, robotic vacuum cleaners, textile machines, office automation equipment, and small-format industrial stepper drives. The wide 35-V input range comfortably handles 24-V industrial bus supplies with transient headroom. When designing with the DRV8426PWPR, observe TI's PCB layout guidelines for the HTSSOP PowerPAD: stitch the EP to a ground copper pour with multiple thermal vias, place VM decoupling capacitors within 5 mm of the VM pins, and keep the high-current motor traces short and wide. Verify the chosen motor's phase inductance is within the smart-tune ripple-control tuning range, or use the fixed-decay modes if motor acoustics are problematic. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers an actionable reference for selecting and laying out the DRV8426PWPR.
DRV8432DKDR - 52V 14A Dual Full-Bridge Motor Driver | TI
The Texas Instruments DRV8432DKDR is a high-performance, integrated dual full-bridge PWM motor driver designed for driving DC motors, stepper motors, and other inductive loads. It operates from a load supply voltage of 0 V to 52.5 V and can deliver up to 14 A continuous output current per bridge (7 A per channel in dual full-bridge mode). The device is housed in a 36-pin HSSOP (PowerPAD) package, providing excellent thermal performance for high-power applications. A motor driver is an integrated circuit that translates low-power control signals from a microcontroller or DSP into high-current, high-voltage signals capable of driving motors. The DRV8432 belongs to the motor driver category, which is a subset of power management ICs. It integrates four half-bridges (configurable as two full H-bridges) with low RDS(on) MOSFETs (110 mΩ at TJ = 25°C), achieving up to 97% power-stage efficiency. This integration reduces external component count and simplifies PCB layout compared to discrete H-bridge designs. Key features include advanced protection circuitry: overcurrent protection (OCP), overtemperature protection (OTP), undervoltage lockout (UVLO), and overvoltage protection (OVP). The device supports PWM control with a wide frequency range, and its current regulation capability enables precise torque control in stepper applications. The DRV8432 also features a sleep mode for low-power standby, reducing quiescent current consumption. Technically, the DRV8432 uses a bootstrap-based gate drive architecture for the high-side N-channel MOSFETs, requiring external bootstrap capacitors. The device provides separate logic and power grounds, and its digital inputs are compatible with 3.3 V and 5 V logic levels. The PWM frequency can be set up to 500 kHz, making it suitable for high-speed switching applications. The thermal pad on the HSSOP package must be soldered to a copper plane for adequate heat dissipation. Typical applications include brushed DC motor drivers in robotics, industrial automation, and automotive systems; bipolar stepper motor drivers in 3D printers and CNC machines; and solenoid drivers in vending machines and industrial controls. The wide voltage range and high current capability make it versatile for various motor control systems. When designing with the DRV8432, ensure proper PCB layout with low-inductance paths for high-current loops and adequate thermal vias under the thermal pad. The bootstrap capacitors should be placed close to the respective pins, and the logic supply should be decoupled with a 0.1 µF ceramic capacitor.
DRV8434ARGER - 48V 2.5A Stepper Driver w/ Stall Detect | TI
The Texas Instruments DRV8434ARGER is a 48-V, 2.5-A bipolar stepper motor driver with integrated current sensing, 1/256 microstepping, Smart Tune, and stall detection via GPIO pins, housed in a 24-pin VQFN (RGE) 4x4 mm package. The device integrates two H-bridge NMOS output stages with internal current-sense resistors, removing the need for external sense resistors and shrinking the BOM for space-constrained designs. What is a bipolar stepper motor driver? A bipolar stepper motor driver is an integrated H-bridge circuit that drives the two coils of a two-phase bipolar stepper motor by reversing current flow through each coil on every step. It sits within the broader hierarchy: motor driver -> motion control -> power management IC -> semiconductor. The DRV8434A family adds integrated current sensing (using an internal sense FET), microstepping indexer (up to 1/256 step), and stall detection - features historically requiring external comparators, ADCs, and an MCU. Key features include a 4.5 V to 48 V wide operating supply range, 2.5 A full-scale output current per H-bridge, 1/256 microstepping indexer, Smart Tune decay mode (mixed decay), integrated current sensing (no external sense resistor required), stall detection output on a GPIO pin, and a low-power nSLEEP pin. Protection features include supply undervoltage, charge pump fault, overcurrent, short circuit, open load, and overtemperature shutdown, with faults flagged on the nFAULT pin. The DRV8434ARGER uses TI's Smart Tune technology that dynamically adjusts the fast-decay portion of each PWM cycle to minimize current ripple and audibility. The integrated current-sense path eliminates the bulky external sense resistor and its associated power dissipation, allowing tighter PCB layouts in compact camera gimbals, medical pumps, and small-format 3D printers. Typical applications include 3D printers (extruder and bed motors), security cameras and PTZ platforms, textile and sewing machines, medical infusion pumps, and factory automation stages. The wide 48 V input supports industrial 24 V and 36 V bus rails with margin for inductive transients. When designing with this part, place the VM and VINT bypass capacitors as close as possible to the pins and follow TI's recommended 4-layer thermal layout for the RGE package. The stall detection GPIO must be configured via SPI to avoid false triggers during acceleration ramps - see the device datasheet for the recommended configuration sequence. This page synthesizes distributor pricing, drop-in alternatives from the same DRV8434 family, and practical PCB layout notes not found on the manufacturer product page alone.
DRV8434ERGER - 48V 2.5A Dual H-Bridge Motor Driver | Texas Instruments
The Texas Instruments DRV8434ERGER is a 48-V, 2.5-A dual H-bridge motor driver with integrated current sensing, Smart Tune technology, and 1/256 microstepping indexer, housed in a 24-pin VQFN (4x4) RGE package. It is designed to drive one bipolar stepper motor or two brushed DC motors in industrial and consumer motion-control applications where compact PCB footprint, accurate current regulation, and low RDS(on) are essential. According to the TI DRV8434E datasheet, the device integrates four N-channel power MOSFETs in two full H-bridges, eliminating the need for external power switches. What is a dual H-bridge motor driver? A dual H-bridge motor driver is an integrated power IC that contains two complete H-bridge output stages on one die, each capable of switching current bidirectionally through a DC motor winding. Two H-bridges together can drive one bipolar stepper (four-wire) motor, one BLDC motor with external commutation logic, or two independent brushed DC motors. The H-bridge topology sits within the broader category of motor driver ICs, which are themselves a sub-category of power management semiconductors. Compared to discrete MOSFET H-bridges, integrated drivers add on-chip current sensing, PWM control logic, fault protection, and (in this case) an integrated microstepping indexer. Key features of the DRV8434ERGER include: 4.5 V to 48 V wide operating supply range, 2.5 A full-scale output current per H-bridge with internal current-sense amplification, programmable decay modes (Smart Tune, Slow, Mixed, Fast), 1 to 1/256 native microstepping without external logic, and a dedicated nSLEEP pin for low-power standby. The Smart Tune decay algorithm automatically selects between slow and fast decay to minimize ripple current and audible noise, a key benefit for office automation and home appliance designs. Technically, the DRV8434E family uses a charge-pump-generated gate drive for the high-side N-FETs, eliminating the need for a bootstrap capacitor. The integrated current sense uses an internal sense-FET topology, removing the external sense resistor and shrinking the BOM. STEP/DIR inputs allow simple host-MCU control of position, while off-the-shelf step rates from full-step to 1/256 microstep are selectable via the M0/M1 pins. Typical applications include 3D printers, CNC routers, textile and sewing machines, office automation (printers, scanners, copiers), ATM and POS cash handlers, video surveillance PTZ cameras, factory automation stages, and any small bipolar stepper or dual brushed DC motor up to 2.5 A per winding. The DRV8434ERGER is also suitable for battery-powered robotics using two brushed DC motors. When designing with this part, choose bulk input capacitance (at least 47 uF) sized for the worst-case motor back-EMF, and connect the exposed thermal pad to a continuous ground copper pour. Configure decay mode to Smart Tune Ripple Control for most stepper loads to minimize audible noise and torque ripple.
DRV8434RGER - 48V 2.5A Stepper Driver VQFN-24 | Texas Instruments
The Texas Instruments DRV8434RGER is a 48-V, 2.5-A bipolar stepper motor driver with integrated current sensing, 1/256 microstepping indexer, and STEP/DIRECTION interface, housed in a 24-pin VQFN (RGE) package measuring 4x4 mm. It integrates two N-channel power MOSFET H-bridges plus a smart-tune mixed-decay current regulator, eliminating the need for external sense resistors while preserving microstep accuracy. A stepper motor driver is an integrated power stage that converts low-level STEP and DIR logic signals from a microcontroller into the high-current, sequenced phase currents required to commutate a two-phase bipolar stepper. The DRV8434 belongs to the broader stepper-driver family within motor-driver ICs, which themselves sit under the power-management umbrella alongside DC-DC converters, gate drivers, and motor predrivers. Bipolar operation means each phase winding is driven by a true H-bridge so current can flow in both directions through the coil. Key features include a wide 4.5-V to 48-V motor supply range, 2.5-A full-scale output per H-bridge with internal current sensing (no external shunt), 1/256 microstepping for smooth motion, an internal 3.3-V reference for logic-level setting, smart-tune technology that auto-adjusts decay mode, and ultra-low 2-uA sleep-mode quiescent current. SPI programmability is also available on the E-variant family for tuning microstep, decay, torque, and fault response. The architecture combines a charge-pump gate supply, dual H-bridge with integrated 330-mOhm HS+LS FETs (per the related DRV8424 family data), configurable off-time PWM chopping (7, 16, 24, or 32 microseconds), and spread-spectrum clocking for reduced EMI. Internal protection includes VM undervoltage lockout, charge-pump fault, overcurrent, overtemperature, and open-load detection. The RGE package exposes a thermal pad for low thermal resistance. Typical applications include textile and sewing machines, CCTV cameras and pan-tilt-zoom stages, 3D printers, robotic vacuum cleaners, point-of-sale printers, and any 24-V or 36-V nominal bipolar stepper subsystem where PCB area, BOM count, and smooth motion matter. The device operates across -40C to +125C junction temperature, suiting industrial environments. When designing with this part, place the VM bulk capacitors as close as possible to the pins and keep the exposed thermal pad soldered to a continuous ground copper pour. Verify that the chosen motor's phase inductance is above the driver minimum to avoid excessive ripple current at high step rates. This page synthesizes distributor pricing, drop-in alternates, and design notes not found in the manufacturer datasheet, giving engineers a faster path from selection to validated BOM.
DRV8714SQRHARQ1 - 40V 4-Ch Smart Gate Driver | TI | Automotive
The Texas Instruments DRV8714SQRHARQ1 is an automotive-grade, 40-V, four-channel half-bridge smart gate driver with integrated wide common-mode inline current sense amplifiers, housed in a 56-pin VQFN (RVJ) package. A half-bridge gate driver is a power-management IC that controls the gate charge of external MOSFETs in an H-bridge or half-bridge power stage. It sits between a low-voltage controller (MCU) and the power FETs, translating logic-level PWM signals into gate-drive currents while providing protection, dead-time management, and current feedback. Multi-channel gate drivers such as the DRV871x-Q1 family consolidate driver power supplies, shunt amplifiers, and protection monitors into one IC, replacing dozens of discrete components in a brushed-DC, stepper, or solenoid drive stage. Key features include a 40-V operating rating suitable for 12-V and 24-V automotive battery systems with load-dump headroom, four independently controllable half-bridges, and smart gate-drive architecture that automatically manages dead time to minimize switching losses and shoot-through. Integrated wide common-mode inline current sense amplifiers eliminate external shunt amplifiers and support accurate motor current feedback for FOC and stall detection. The DRV871x-Q1 family integrates driver power supplies, current shunt amplifiers, and protection monitors, reducing total system complexity, size, and cost. Per the TI datasheet, the DRV8718-Q1 (8-channel) and DRV8714-Q1 (4-channel) are drop-in pin-to-pin compatible in the 56-pin VQFN (RVJ) package, with half-bridge 1-4 locations shifted on the DRV8714-Q1 to aid PCB routing. Typical applications include automotive brushed DC motor control for pumps, fans, dampers and actuators, solenoid drivers, seat adjusters, and multi-motor body-electronics modules requiring AEC-Q100-qualified silicon. Design consideration: verify gate-drive current settings and dead-time register configuration in SPI before first power-up, and place gate-loop layouts short and symmetrical to limit ringing. This page synthesizes distributor pricing, drop-in alternative data, and practical design notes not found in the manufacturer datasheet.
DRV8718SQRHARQ1 - 40V 8-Ch Half-Bridge Gate Driver | Texas Instruments
The Texas Instruments DRV8718SQRHARQ1 is an automotive-qualified, 8-channel half-bridge smart gate driver with wide common-mode inline current sense amplifiers, operating from a 4.9 V to 37 V supply range (40 V absolute maximum) in a 56-pin VQFN (8x8 mm) package. A half-bridge gate driver is a power management IC that controls the gate terminals of external power MOSFETs, allowing a low-voltage logic controller to switch high-current motor loads safely and efficiently. Within the power-delivery hierarchy, it sits between the microcontroller and the power stage: gate driver -> power stage -> motor/load driver -> power management IC. The DRV871x-Q1 family integrates multiple half-bridge drivers, driver power supplies, current shunt amplifiers, and protection monitors to reduce total system complexity, size, and cost. Key features include AEC-Q100 qualification at temperature grade 1 (-40C to +125C ambient), pin-to-pin 4-channel (DRV8714-Q1) and 8-channel (DRV8718-Q1) variants, 4 PWM inputs with flexible output mapping, and a tripler charge pump that sustains 100% duty-cycle PWM operation. Integrated wide common-mode inline current sense amplifiers eliminate the need for external amplifiers in brushless DC motor control. Architecturally, the DRV8718SQRHARQ1 integrates eight half-bridge gate drivers with internal gate-drive supplies and per-channel protection (overcurrent, OVP/UVP, thermal shutdown), making it suited to 12 V and 24 V automotive battery rails with load-dump headroom. Smart gate-drive features tune MOSFET switching to control EMI while limiting switching loss. Typical applications include automotive DC motor control (pumps, fans, actuators), body electronics modules, HVAC dampers, and general-purpose multi-motor loads driven by external power MOSFETs. Design consideration: choose external MOSFETs whose gate charge matches the drive capability of each channel, and route high-current paths away from the current-sense amplifier inputs to preserve accuracy. This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
DRV8804PWPR - 65V 2.3A Quad Low-Side Driver | Texas Instruments
The Texas Instruments DRV8804PWPR is a 65 V, 2.3 A quad-channel low-side driver with integrated SPI control and per-channel overcurrent protection, housed in a 16-pin HTSSOP (PWP) package with PowerPAD. The device integrates four N-channel MOSFETs with a typical RDS(on) of 500 mΩ, built-in inductive catch diodes, and a daisy-chainable serial interface that allows multiple drivers to share a single SPI bus. A low-side driver is a switching topology where the load is tied to a positive supply and the driver transistor pulls the load to ground to energize it. Compared to high-side or H-bridge drivers, low-side drivers are simpler, lower-cost, and well suited to unipolar loads where current direction is fixed. The DRV8804 belongs to the broader category of motor and motion driver ICs, which sit between a microcontroller and electromechanical loads such as stepper motors, DC motors, relays, and solenoids. It supports unipolar stepper drive, brushed DC motor drive, and generic low-side switching. Key features include a wide 8.2 V to 60 V operating range, integrated clamping diodes for inductive transient suppression, parallelable outputs for higher current, and individual channel enable and fault reporting through SPI. The device also provides thermal shutdown, undervoltage lockout, and an open-drain fault output to flag overcurrent events to the host controller. Typical applications include unipolar stepper motor drives (one coil at a time), brushed DC motor drivers, relay and solenoid arrays, valve and actuator control, and LED string driving in industrial and building-automation systems. The HTSSOP-16 PowerPAD package enables sustained 1.5 A per-channel operation with proper PCB thermal design. When designing with this device, ensure the PowerPAD is soldered to at least 1 sq. in. of copper to keep junction temperature within the 150 C limit, and add a bulk capacitor at VM to absorb motor back-EMF. The SPI interface requires proper CS framing and clock polarity consistent with the datasheet timing diagram.