DRV8317 datasheet(59/69 Pages) TI

59 / 69 page

9.3 Alternate Applications

The DRV8317 can be used to drive brushed-DC motors and solenoid loads. The following design procedure can

be used to configure the DRV8317.

nSLEEP

CSAREF

INHA

INLA

AVDD

AGND

VVM

OUTA

OUTB

OUTC

CAVDD

INHB

INLB

INHC

INLC

0.1 µF

10 µF

MODE

GAIN

SLEW

PWM

Control

Input

nFAULT

GP-I

5.1 k

GP-O

PWM

Control

Module

PGND

VCC

0.1 µF

DRV8317H

Microcontroller

External

Load

Voltage

Supervisor

ADC

VIN_AVDD

AVDD

0.1 µF

10 µF

Load

VVM

CPH

CPL

47 nF

Sleep Control

SOC

SOA

SOB

Current

Sensing

CSA

ADC

330

22 pF

Figure 9-6. Application Schematics (DRV8317H) - Brushed-DC and Solenoid Load Drive Block Diagram

6x PWM mode or 3x PWM mode can be used to drive brushed-DC and/or solenoid loads depending on the

application. A Brushed-DC motor can be connected to two OUTx phases to create an integrated full H-bridge

configuration to drive the motor in both direction.

Solenoid loads can be connected from OUTx to VM or GND to use the DRV8317 as a push-pull driver in 6x

PWM or 3x PWM mode. When the load is connected from OUTx to GND, the HS MOSFET sources current into

the solenoid, and the LS MOSFET acts as a recirculation diode to recirculate current from the solenoid. When

the load is connected from OUTx to VM, the LS MOSFET sink current from the solenoid to GND, and the HS

MOSFET acts as a recirculation diode to recirculate current from the solenoid.

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DRV8317

SLVSGT3 – DECEMBER 2022

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