DRV8235 Series

38V 3.7A brushed DC motor driver with integrated speed regulation and stall detection

Catalog

38V 3.7A brushed DC motor driver with integrated speed regulation and stall detection

Part	Motor Type - Stepper	Voltage - Load [Max]	Voltage - Load [Min]	Function	Current - Output	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Motor Type - AC, DC	Interface	Supplier Device Package	Package / Case	Output Configuration	Applications	Operating Temperature [Min]	Operating Temperature [Max]	Technology
Texas Instruments DRV8235RTER	Bipolar	38 V	4.5 V	Driver - Fully Integrated Control and Power Stage	3.7 A	5.5 V	0 V	Surface Mount	Brushed DC	I2C PWM	16-WQFN (3x3)	16-WFQFN Exposed Pad	Half Bridge (2)	General Purpose	-40 °C	125 °C	Power MOSFET

Catalog

38V 3.7A brushed DC motor driver with integrated speed regulation and stall detection

Key Features

• N-channel H-bridge brushed DC motor driver4.5V to 38V operating supply voltage rangeIntegrated Voltage and Speed regulationSoft-Start and Stop feature for inrush current protection600mΩ RDS(on) (High-Side + Low-Side)High output current capability: 3.7A Peak, 2A RMSPWM with I2C control interfaceConfiguration and diagnostics on I2C registersMulti-follower operation supportSupports standard and fast I2C modeSupports 3.3V, and 5V logic inputsIntegrated current sensing and current regulationAnalog current sense output (IPROPI)Internal charge pump with 100% duty cycleLong battery life with low-power sleep mode< 1µA maximum sleep currentSmall package and footprint16-Pin WQFN with PowerPAD™, 3 × 3mmIntegrated protection featuresVM undervoltage lockout (UVLO)Overcurrent protection (OCP)Thermal shutdown (TSD)Stall detectionOvervoltage protection (OVP)N-channel H-bridge brushed DC motor driver4.5V to 38V operating supply voltage rangeIntegrated Voltage and Speed regulationSoft-Start and Stop feature for inrush current protection600mΩ RDS(on) (High-Side + Low-Side)High output current capability: 3.7A Peak, 2A RMSPWM with I2C control interfaceConfiguration and diagnostics on I2C registersMulti-follower operation supportSupports standard and fast I2C modeSupports 3.3V, and 5V logic inputsIntegrated current sensing and current regulationAnalog current sense output (IPROPI)Internal charge pump with 100% duty cycleLong battery life with low-power sleep mode< 1µA maximum sleep currentSmall package and footprint16-Pin WQFN with PowerPAD™, 3 × 3mmIntegrated protection featuresVM undervoltage lockout (UVLO)Overcurrent protection (OCP)Thermal shutdown (TSD)Stall detectionOvervoltage protection (OVP)

Description

The DRV8235 is a high-performance integrated H-bridge motor driver with integrated speed regulation along with additional integrated features like stall detection, current sense output, current regulation, and protection circuitry. The integrated speed and voltage regulation feature uses the motor voltage and current information to regulate motor speed or voltage eliminating the potential need for external sensors to detect speed. This reduces board size and design complexity, and saves on overall system cost. Integrated speed regulation is used to maintain constant motor speed over varying input supply voltages which minimizes current consumption and saves power over time. This is critical in applications that have different loading conditions or rely on battery power for operation where the input voltage is not constant. Soft-start and stop allows for a controlled turn-on and turn-off time, reducing large inrush currents to protect the motor windings from damage, thereby increasing system reliability and longevity. An internal current mirror implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current sense output allows a microcontroller to detect motor stall or changes in load conditions. Using the VREF pin, this device can regulate the motor current during startup and high-load events without interaction from a microcontroller. The device supports sensorless motor stall detection and reporting to microcontroller. The DRV8235 is a high-performance integrated H-bridge motor driver with integrated speed regulation along with additional integrated features like stall detection, current sense output, current regulation, and protection circuitry. The integrated speed and voltage regulation feature uses the motor voltage and current information to regulate motor speed or voltage eliminating the potential need for external sensors to detect speed. This reduces board size and design complexity, and saves on overall system cost. Integrated speed regulation is used to maintain constant motor speed over varying input supply voltages which minimizes current consumption and saves power over time. This is critical in applications that have different loading conditions or rely on battery power for operation where the input voltage is not constant. Soft-start and stop allows for a controlled turn-on and turn-off time, reducing large inrush currents to protect the motor windings from damage, thereby increasing system reliability and longevity. An internal current mirror implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current sense output allows a microcontroller to detect motor stall or changes in load conditions. Using the VREF pin, this device can regulate the motor current during startup and high-load events without interaction from a microcontroller. The device supports sensorless motor stall detection and reporting to microcontroller.