DRV8350/53 Three-Phase Smart Gate Drivers

Texas Instruments' DRV8350 and DRV8353 are 100 V three-phase smart gate drivers with various pulse width modulation (PWM) control modes

Image of Texas Instruments' DRV8350 Three-Phase Smart Gate DriverTexas Instruments' DRV835x devices are highly-integrated gate drivers for three-phase brushless DC (BLDC) motor applications. These applications include field-oriented control (FOC), sinusoidal current control, and trapezoidal current control of BLDC motors. The device variants provide optional integrated current shunt amplifiers to support different motor control schemes and a buck regulator to power the gate driver or external controller.

The DRV835x uses smart gate drive (SGD) architecture to decrease the number of external components that are typically necessary for MOSFET slew rate control and protection circuits. The SGD architecture also optimizes dead-time to prevent shoot-through conditions, provides flexibility in decreasing electromagnetic interference (EMI) by MOSFET slew rate control, and protects against gate short circuit conditions through VGS monitors. A strong gate pulldown circuit helps prevent unwanted dv/dt parasitic gate turn on events.

There are various PWM control modes (6x, 3x, 1x, and independent) that are supported for simple interfacing to the external controller. These modes decrease the number of outputs required of the controller for the motor driver PWM control signals. These devices include 1x PWM-mode for simple sensored trapezoidal control of a BLDC motor by using an internal block commutation table.

Features
  • 9 V to 100 V, triple half-bridge gate driver
    • Optional integrated buck regulator
    • Optional triple low-side current shunt amplifiers
  • Smart gate drive architecture:
    • Adjustable slew rate control for EMI performance
    • VGS handshake and min. dead-time insertion to prevent shoot-through
    • 50 mA to 1 A peak source current
    • 100 mA 2 A peak sink current
    • dv/dt mitigation through strong pulldown
  • Integrated gate driver power supplies:
    • High-side doubler charge pump for 100% PWM duty cycle control
    • Low-side linear regulator
  • Integrated LM5008A buck regulator:
    • 6 V to 95 V operating voltage range
    • 2.5 V to 75 V, 350 mA output capability
  • Integrated triple current shunt amplifiers:
    • Adjustable gain: 5 V/V, 10 V/V, 15 V/V, and 40 V/V
    • Bidirectional or unidirectional support
  • 6x, 3x, 1x, and independent PWM modes:
    • Supports 120° sensored operation
  • SPI or hardware interface available
  • Low-power sleep-mode: 20 µA at VVM = 48 V
  • Integrated protection features:
    • VM undervoltage lockout (UVLO)
    • Gate drive supply undervoltage (GDUV)
    • MOSFET VDS overcurrent protection (OCP)
    • MOSFET shoot-through prevention
    • Gate driver fault (GDF)
    • Thermal warning and shutdown (OTW/OTSD)
    • Fault condition indicator (nFAULT)
Applications
  • Three-phase BLDC motor modules
  • Fans, blowers, and pumps
  • E-bikes, e-scooters, and e-mobility
  • Power and garden tools and lawn mowers
  • Drones, robotics, and RC toys
  • Factory automation and textile machines

DRV8350 and DRV8353 Three-Phase Smart Gate Drivers

ImageManufacturer Part NumberDescriptionInterfaceAvailable QuantityView Details
DRV8350RHRGZT datasheet link100V 3-PHASE GATE DRIVEDRV8350RHRGZT100V 3-PHASE GATE DRIVEHardware930 - Immediate
1500 - Factory Stock
DRV8350RHRGZT product page link
DRV8350RSRGZT datasheet link100V 3-PHASE GATE DRIVEDRV8350RSRGZT100V 3-PHASE GATE DRIVESPI680 - Immediate
DRV8350RSRGZT product page link
DRV8353RHRGZT datasheet link100V 3-PHASE GATE DRIVEDRV8353RHRGZT100V 3-PHASE GATE DRIVEHardware860 - Immediate
4000 - Factory Stock
DRV8353RHRGZT product page link
DRV8353RSRGZT datasheet link100V 3-PHASE GATE DRIVEDRV8353RSRGZT100V 3-PHASE GATE DRIVESPI535 - Immediate
4771 - Factory Stock
DRV8353RSRGZT product page link
Published: 2018-10-26