Overview

The DRV8302 (DRV8302DCAR) is an integrated 3-phase gate driver IC manufactured by Texas Instruments. It is the hardware-configured companion to the DRV8301, used extensively in VESC (Vedder Electronic Speed Controller) boards, electric skateboard controllers, e-bike drives, and high-power BLDC robotics.

Unlike the DRV8301 which uses SPI software registers, the DRV8302 configures overcurrent thresholds, amplifier gains, and PWM modes directly via physical hardware pins (GAIN, M_PWM, M_OC, OC_ADJ). Operating on 6.0V to 60.0V DC (2S…14S2\text{S} \dots 14\text{S} LiPo batteries), it features a 1.5A step-down buck regulator, two low-offset current-shunt amplifiers, and 6-channel PWM inputs.

Quick reference

Power Supply Voltage (PVDD)6.0 V to 60.0 V DC (65V absolute maximum)
Gate Drive Current1.7 A1.7\text{ A} Peak Source / 2.3 A2.3\text{ A} Peak Sink
Control ModeHardware Pin Configured (No SPI required)
Integrated Buck RegulatorAdjustable 1.5 A1.5\text{ A} output (3.3V or 5.0V step-down supply)
Current Sense Amplifiers2x Independent differential current-shunt amplifiers (10,20,40,80 V/V10, 20, 40, 80\text{ V/V} selectable gain)
Protection FeaturesOvercurrent Protection (OCP), Overtemperature (OTS), Short-Circuit, UVLO
Package56-pin HTSSOP (PowerPAD down)

Hardware Configuration Pins

Pin NamePin FunctionSelectable States & Settings
GAINAmplifier Gain SelectGND = 10 V/V, 3.3V = 20 V/V, Open = 40 V/V, Reserved = 80 V/V
M_PWMPWM Mode InputGND = 6-channel PWM input mode; 3.3V = 3-channel PWM input mode
M_OCOvercurrent ModeGND = Cycle-by-cycle limiter; 3.3V = OCP Off; Open = Latch Shutoff
OC_ADJOvercurrent ThresholdAnalog voltage set via resistor divider to GND
nOCTWFault WarningOpen-drain overcurrent & thermal warning output
nFAULTFault ShutdownOpen-drain fault interrupt output

Specifications

ParameterSymbolMinTypMaxUnitConditions
Operating Supply VoltageVPVDDV_{PVDD}6.024.0/48.060.0VDC
Gate Drive Source CurrentISOURCEI_{SOURCE}1.01.7—AVBST−VSH=10VV_{BST} - V_{SH} = 10\text{V}
Gate Drive Sink CurrentISINKI_{SINK}1.32.3—AVSH=10VV_{SH} = 10\text{V}
Current Sense Amp GainGCSAG_{CSA}102080V/VHardware pin setting via GAIN
Buck Output CurrentIBUCKI_{BUCK}—1.5—AStep-down converter

Common mistakes

  • Leaving GAIN or M_OC pins floating without checking default states: Because DRV8302 relies on pin states instead of SPI registers, leaving configuration pins un-connected can trigger latching overcurrent modes. Always tie GAIN, M_PWM, and M_OC to hard logic levels.
  • High di/dtdi/dt switching noise on current-sense lines: Ensure current-shunt traces (SP1/SN1 and SP2/SN2) are routed as differential pairs away from high-current motor phases.

Notes

  • DRV8302 vs DRV8301: DRV8302 is hardware pin-configured (ideal for simple microcontrollers without SPI drivers); DRV8301 uses 4-wire SPI registers for software configuration and detailed fault diagnostics.

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