60V Three-Phase Smart Gate Driver With Buck Regulator


Special Note

Includes DRV8320RS (Serial Interface) and DRV8320RH (Hardware Interface). EVM available for the superset device DRV8323R.


The DRV832x family of devices are integrated gate drivers for three-phase applications. The devices provides three half-bridge gate drivers, each capable of driving high-side and low-side N-channel power MOSFETs. The DRV832x generates the proper gate drive voltages using an integrated charge pump for the high-side MOSFETs and a linear regulator for the low-side MOSFETs. The smart gate drive architecture supports up to 1-A source and 2-A sink peak gate drive current capability. The DRV832x can operate from a single power supply and supports a wide input supply range of 6 to 60-V for the gate driver and 4 to 60-V for the optional buck regulator.

The 6x, 3x, 1x, and independent input PWM modes allow for simple interfacing to controller circuits. Gate drive and device configuration settings are highly configurable through a SPI or hardware (H/W) interface. The DRV8323 and DRV8323R devices have three, integrated low-side shunt amplifiers that allow bidirectional current sensing on all three phases of the drive stage. The DRV8320R and DRV8323R devices integrate a 600-mA buck regulator.

A low-power sleep mode is provided to achieve low quiescent current draw by shutting down most of the internal circuitry. Internal protection functions are provided for undervoltage lockout, charge pump fault, MOSFET overcurrent, MOSFET short circuit, gate driver fault, and overtemperature. Fault conditions are indicated on the nFAULT pin with details through the device registers for SPI device variants.


  • Triple Half-Bridge Gate Driver
    • Drives High-Side and Low-Side
      N-Channel MOSFETs
    • Supports 100% PWM Duty Cycle
  • Smart Gate Drive Architecture
    • Adjustable Slew Rate Control
    • 10-mA to 1-A Peak Source Current
    • 20-mA to 2-A Peak Sink Current
  • Integrated Gate Driver Power Supplies
    • High-Side Charge Pump
    • Low-Side Linear Regulator
  • 6 to 60-V Operating Voltage Range
  • Optional Integrated Buck Regulator
    • 4 to 60-V Operating Voltage Range
    • 0.8 to 60-V, 600-mA Output Capability
  • Optional Integrated Triple Current
    Shunt Amplifiers
    • Adjustable Gain (5, 10, 20, 40 V/V)
    • Bidirectional or Unidirectional Support
  • Selectable SPI or Hardware Interface
  • 6x, 3x, 1x, and Independent PWM Modes
  • Supports 1.8-V, 3.3-V, and 5-V Logic Inputs
  • Low-Power Sleep Mode (20-µA)
  • Linear Voltage Regulator, 3.3 V, 30 mA
  • Compact QFN Packages and Footprints
  • Efficient System Design With CSD88599Q5DC
  • Integrated Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • MOSFET Overcurrent Protection (OCP)
    • Gate Driver Fault (GDF)
    • Thermal Warning and Shutdown (OTW/OTSD)
    • Fault Condition Indicator (nFAULT)

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Parametrics Compare all products in Brushless DC Gate Drivers

Vs (Min) (V)
Vs (Max) (V)
Gate Drive (A)
Number of Half Bridges
Current Sense Amps
Control I/F
Operating Temperature Range (C)
DRV8320R DRV8320 DRV8323 DRV8323R
6    6    6    6   
60    60    60    60   
1    1    1    1   
3    3    3    3   
0    0    3    3   
Buck Step Down Converter
Hardware Management I/F
SPI Management I/F
VDS Monitoring   
Hardware Management I/F
SPI Management I/F
VDS Monitoring   
Hardware Management I/F
SPI Management I/F
VDS Monitoring   
Buck Step Down Converter
Hardware Management I/F
SPI Management I/F
VDS Monitoring   
PWM (6x/3x/1x)    PWM (6x/3x/1x)    PWM (6x/3x/1x)    PWM (6x/3x/1x)   
Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
40VQFN    32WQFN    40WQFN    48VQFN