DRV8307/8 3-Phase Brushless DC Motor Controllers


TI's DRV8307 BLDC controller and pre-driver and DRV8308 3-phase BLDC motor pre-driver with integrated speed control and commutation logic

Texas Instruments' DRV8307 is a three half-bridge pre-driver that drives six N-type MOSFETs 30 mA with a single power supply. Aimed at sensored three-phase brushless DC motors, the DRV8307 is driven by a single PWM input and supports integrated commutation logic with three Hall sensor inputs. A separate 5 V regulator is also included to be used to power Hall-Effect sensors and other external components.

The DRV8307 includes a current sense input for current limiting and protection. The current limit can be set by adjusting the value of the RISENSE sense resistor.

The DRV8308 device is a three half-bridge pre-driver that drives up to 130 mA to six N-type MOSFETs with a single power supply. Aimed at sensored three-phase brushless DC motors, this pre-driver includes configurable a digital speed loop, speed controls, and commutation modes to optimize motor performance. When properly tuned, the DRV8308 device can drive motors with less than 0.1% cycle jitter and fast torque compensation.

The integrated digital speed loop allows the motor to maintain speed under variable loads with programmable gain and loop filters. The adjustable slew rates can also lower the switching noise and improve EMC.

DRV8307 Features
  • Three-phase brushless DC motor controller
    • PWM input for speed control
  • Operating supply voltage 8.5 to 32 V
  • 30 mA gate-drive current to 6 N-channel MOSFETs
  • Integrated current sense amplifier
  • 5 V regulator for Hall sensors
DRV8308 Features
  • Three-phase brushless DC motor controller
    • Fully digital speed loop with programmable gain and loop filters
    • Clock input or PWM inputs for speed control
  • Operating supply voltage 8.5 to 32 V
  • Drives 10 to 130 mA gate-drive current to 6 N-channel MOSFETs with adjustable slew rates
  • Supports sensor-based sinusoidal and trapezoidal commutation control with tunable delay

DRV8307/8 3-Phase Brushless DC Motor Controllers

Manufacturer Part Number Description Available Quantity Datasheets
DRV8308RHAT IC MOTOR CONTROLLER SPI 40VQFN 244
DRV8308RHAR IC MOTOR CONTROLLER SPI 40VQFN 2225
DRV8307RHAR IC MOTOR CONTROLLER PAR 40VQFN 2219

Evaluation Boards/Modules

Manufacturer Part Number Description Available Quantity Datasheets
DRV8308EVM MOD EVAL DRV8308 PREDRIVER 4
DRV8307EVM EVAL BOARD MOTOR DRIVER DRV8307 1