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Texas Instruments DRV8316/DRV8316-Q1 Three-Phase FET Motor Driver

Texas Instruments DRV8316/DRV8316-Q1 Three-Phase Integrated FET Motor Driver is a single-chip power stage solution designed for driving 12V brushless-DC motors up to 40W. The DRV8316/DRV8316-Q1 driver combines three 1/2H bridges with 40V absolute maximum capability and a very low RDS(ON) of 95mOhms (high-side plus low-side) to enable high power drive capability.

The TI DRV8316/DRV8316-Q1 Motor Driver offers an integrated current sensing feature that eliminates the requirement for external sense resistors. The power management features of the adjustable buck regulator and LDO generate the necessary voltage rails for the DRV8316/DRV8316-Q1 and are used to power external circuits.

The DRV8316/DRV8316-Q1 executes a 6x or 3x PWM control scheme, which can implement sensored or sensorless field-oriented control (FOC), sinusoidal control, or trapezoid control using an external microcontroller. The DRV8316-Q1 is capable of driving a PWM frequency up to 200kHz. The control scheme is highly configurable through hardware pins or register settings ranging from motor current limiting behavior to fault response.

There are many protection features integrated into the DRV8316/DRV8316-Q1, intended to protect the device, motor, and system against fault events. The DRV8316-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Three-phase BLDC motor driver
  • 4.5V to 35V operating voltage (40V abs max)
  • High output current capability: 8A Peak
  • Low MOSFET on-state resistance
    • 95mΩ RDS(ON) (HS + LS) at TA = 25°C
  • Low power sleep mode
    • 1.5µA at VVM = 24V, TA = 25°C
  • Multiple control interface options
    • 6x PWM control interface
    • 3x PWM control interface
  • Supports up to 200kHz PWM frequency for low inductance motor support
  • Cycle-by-cycle current limit
  • Integrated built-in current sense
    • It doesn’t require external current sense resistors
  • Hardware or 5MHz 16-bit SPI interface
  • Supports 1.8V, 3.3V, and 5V logic inputs
  • Built-in 3.3V (5%), 30mA LDO regulator
  • Built-in 3.3V/5V, 200mA buck regulator
  • Delay compensation reduces duty cycle distortion
  • A suite of integrated protection features
    • Supply undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal warning and shutdown (OTW/OTSD)
    • Fault condition indication pin (nFAULT)
    • Optional fault diagnostics over SPI interface

Applications

  • Brushless-DC (BLDC) motor modules
  • Automotive LIDAR
  • Small automotive fans and pumps
  • Automotive actuators

Simplified Schematic

Schematic - Texas Instruments DRV8316/DRV8316-Q1 Three-Phase FET Motor Driver

Texas Instruments DRV8316/DRV8316-Q1 Three-Phase FET Motor Driver