DRV8814_16 Datasheet, PDF (9/26 Pages) Texas Instruments – DC Motor Driver IC

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DRV8814
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.
AENBL
APHASE
DECAY
AI[1:0]
VCP, VGD
OCP
Pre-
drive
PWM
DAC
2
OCP
-
+
A=5
VM
VM
AOUT1
AOUT 2
DCM
AISEN
AVREF
BENBL
BPHASE
BI[1:0]
BVREF
VCP, VGD
OCP
Pre-
drive
PWM
DAC
2
OCP
-
+
A =5
VM
VM
BOUT 1
BOUT 2
DCM
BISEN
Figure 5. Motor Control Circuitry
NOTE
There are multiple VM pins. All VM pins must be connected together to the motor supply
voltage.
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