AOUT1

AOUT2

BOUT1

BOUT2

VM

VM

AISEN

BISEN

APHASE

Pre-

drive

Pre-

drive

VCP , VGD

VM

VM

+

-

PWM

VCP , VGD

+

-

PWM

AVREF

OCP

OCP

OCP

OCP

DECAY

BENBL

DAC

DAC

A = 5

A = 5

BI[1:0]

2

AENBL

BPHASE

AI[1:0]

2

BVREF

DCM

DCM

DRV8814

www.ti.com

SLVSAB9E – MAY 2010 – REVISED NOVEMBER 2015

7.3 Feature Description

7.3.1 PWM Motor Drivers

The DRV8814 contains two H-bridge motor drivers with current-control PWM circuitry. A block diagram of the

motor control circuitry is shown in Figure 5.

Figure 5. Motor Control Circuitry

NOTE

There are multiple VM pins. All VM pins must be connected together to the motor supply

voltage.

Copyright © 2010–2015, Texas Instruments Incorporated

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