Datasheet

AOUT1
AOUT2
BOUT1
BOUT2
Step
Motor
VMA
VMB
ISENA
ISENB
VREF
Pre-
drive
Pre-
drive
VCP
VM
VM
PWM
VCP
PWM
DAC
DAC
OCP
OCP
OCP
OCP
A=8
A=8
Control /
Indexer
Logic
DECAY
RCB
RCA
VGD
VGD
+
+
–
–
DRV8811
SLVS865G –SEPTEMBER 2008–REVISED MAY 2010 www.ti.com
FUNCTIONAL DESCRIPTION
PWM H-Bridge Drivers
DRV8811 contains two H-bridge motor drivers with current-control PWM circuitry, and a microstepping indexer. A
block diagram of the motor control circuitry is shown below.
Figure 1. Block Diagram
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Product Folder Link(s): DRV8811