Outputs

Power

0.1µF

Charge

Pump

OUT1

VBB

Pre-

driver

VCP

OUT2

VBB

Pre-

driver

VCP

BDC

VCP

CP1

CP2

VBB

0.1µF

0.1µF

bulk

SENSE

VPROPI

GND

GND

PPAD

VCP

VBB

Regulators

IN1

IN2

EN1

EN2

nSLEEP

nFAULT

Core

Logic

Protection

Temperature

Sensor

Overcurrent

Monitoring

Voltage

Monitoring

Inputs

5

x

DRV8816

SLRS063B – SEPTEMBER 2013 – REVISED OCTOBER 2014

www.ti.com

8 Detailed Description

8.1 Overview

The DRV8816 uses 4 CMOS inputs to control 2 high-voltage high-current outputs, while integrating protection

features, fault reporting, a sleep mode, and current sensing. EN1 and IN1 control OUT1, and EN2 and IN2

control OUT2, according to Table 2. The device is designed to drive two independent loads or one brushed DC

motor, as shown in Figure 4 and Table 3.

provides a user-programmable overcurrent threshold. The VPROPI output equals the sense voltage amplified by

a factor of 5, and it can be used by a microcontroller to know the motor current, in order to Pulse-Width Modulate

the DRV8816 inputs and regulate motor current.

8.2 Functional Block Diagram

8.3 Feature Description

8.3.1 Bridge Control

The DRV8816 is controlled using separate enable and input pins for each ½-H-bridge.

8

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