40-V max 3-phase smart gate driver with current shunt amplifier


Product details


Rating Catalog Control method External Control, Trapezoidal Control Architecture Gate Driver Control interface 6xPWM, 3xPWM, 1xPWM Gate drive (A) 0.15 Vs (Min) (V) 6 Vs ABS (Max) (V) 40 Features Current Sense Amplifier, Hardware Management I/F, Smart Gate Drive Operating temperature range (C) -40 to 125 open-in-new Find other Brushless DC (BLDC) motor drivers

Package | Pins | Size

VQFN (RHA) 40 36 mm² 6 x 6 open-in-new Find other Brushless DC (BLDC) motor drivers


  • 6-V to 38-V, Triple Half-Bridge Gate Driver With Integrated 3x Current Sense Amplifiers (CSA)
    • 40-V Absolute Maximum Rating
    • Fully Optimized for 12-V and 24-V DC Rails
    • Drives High-Side and Low-Side N-Channel MOSFETs
    • Supports 100% PWM Duty Cycle
  • Smart Gate-Drive Architecture
    • Adjustable Slew-Rate Control for Better EMI and EMC Performance
    • VGS Hand-Shake and Minimum Dead-Time Insertion to Avoid Shoot-Through
    • 15-mA to 150-mA Peak Source Current
    • 30-mA to 300-mA Peak Sink Current
  • 6x, 3x, 1x and Independent PWM Modes
    • Supports 120º Sensored Operation
  • Integrated Gate-Driver Power Supplies
    • High-Side Doubler Charge Pump
    • Low-Side Linear Regulator
  • Integrated Triple Current-Shunt Amplifiers
    • Adjustable Gain (5, 10, 20, 40 V/V)
    • Bidirectional or Unidirectional Support
  • SPI or Hardware Device Variants
  • Supports 1.8-V, 3.3-V, and 5-V Logic Inputs
  • Low-Power Sleep Mode
  • Linear Voltage Regulator, 3.3-V, 30-mA
  • Integrated Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • MOSFET VDS Overcurrent Protection (OCP)
    • MOSFET Shoot-Through Protection
    • Gate Driver Fault (GDF)
    • Thermal Warning and Shutdown (OTW/OTSD)
    • Fault Condition Indicator (nFAULT)
open-in-new Find other Brushless DC (BLDC) motor drivers


The DRV8304 device is an integrated gate driver for 3-phase brushless DC (BLDC) motors applications for 12-V and 24-V DC rails. These applications include field-oriented control (FOC), sinusoidal current control, and trapezoidal current control of BLDC motors. The device integrates three current-sense amplifiers (CSA) for sensing the phase currents of BLDC motors for optimum FOC and current-control system implementation. An AUTOCAL feature automatically calibrates the CSA offset error for accurate current sensing.

The device is based on smart gate-drive (SGD) architecture to eliminate the need of any external gate components (resistors and Zener diodes) while fully protecting the external FETs. The SGD architecture optimizes dead time to avoid any shoot-through conditions, provides flexibility in decreasing electromagnetic interference (EMI) by gate slew-rate control, and protects against any gate-short conditions through VGS hand-shaking and dead time insertion. Strong pulldown current also prevents any dv/dt gate turnon.

Various PWM control modes (1x, 3x, 6x, and independent) are supported for simple interfacing to control circuits that can be powered by the 30-mA, 3.3-V internal regulator. These modes decrease the number of output peripherals of the controller for the specific motor-control requirements and provide flexibility of control. The device also has a 1x mode for sensored trapezoidal control of the BLDC motor by using the internal block-commutation table. The device can also be configured to drive multiple loads, such as solenoids, in independent mode.

open-in-new Find other Brushless DC (BLDC) motor drivers
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Technical documentation

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Type Title Date
* Data sheet DRV8304 38-V 3-Phase Smart Gate Driver datasheet (Rev. B) Jul. 17, 2018
Application note System Design Considerations for High-Power Motor Driver Applications Jun. 22, 2021
Application note MSP430 and DRV83xx Selection Guide for Power Tools (Rev. A) Jun. 14, 2021
Application note Brushless-DC Made Simple – Sensored Motor Control (Rev. B) Apr. 13, 2021
Technical article A basic brushless gate driver design – part 3: integrated vs. discrete half bridges Dec. 16, 2020
Application note Best Practices for Board Layout of Motor Drivers (Rev. A) Jan. 22, 2019
Application note Field Oriented Control Made Easy for Brushless DC Motors Using Smart Gate Drive (Rev. B) Aug. 22, 2018
Application note Cut-Off Switch in High-Current Motor-Drive Applications (Rev. A) Aug. 20, 2018
Technical article Connectivity helps integrate intelligent motor control on a single MCU Jun. 06, 2018
Technical article Cut the power and complexity of your appliance designs Feb. 06, 2018
User guide BOOSTXL-DRV8304H EVM User's Guide Oct. 23, 2017
User guide BOOSTXL-DRV8304x EVM GUI User’s Guide Oct. 23, 2017
User guide BOOSTXL-DRV8304x EVM Sensored Software User's Guide Oct. 23, 2017
User guide BOOSTXL-DRV8304x EVM Sensorless Software User's Guide Oct. 23, 2017
Technical article Six weird ways to design with a brushless-DC driver Aug. 28, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The BOOSTXL-DRV8304HEVM evaluation module  (EVM) is a 15A, 3-phase brushless DC drive stage based on the DRV8304H gate driver and A2 dual-package MOSFETs.  The EVM has individual DC bus and phase voltage sense as well as individual low-side current shunt amplifiers, making (...)
  • 6 V to 38 V Operating Voltage Range
  • 15 A continuous / 20 A peak H-bridge output current
  • Three Integrated Current Shunt Amplifiers
  • Sensored or Sensorless BLDC Firmware Available

Design tools & simulation

SLVMD55.ZIP (311 KB) - PSpice Model

Reference designs

10.8-V/30-W, >95% Efficiency, 4.3-cm2, Power Stage Reference Design for Brushless DC Servo Drive
TIDA-01587 — This 15-W, 16-mm × 27-mm, power stage reference design drives and controls the position of the brushless DC (BLDC) motor operating from a three- to four-cell Li-ion battery. This highly-efficient solution is optimized with a very small form factor that easily fits into the motor and supports (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RHA) 40 View options

Ordering & quality

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