DRV8816 Datasheet, PDF (7/17 Pages) Texas Instruments – DMOS DUAL 1/2-H-BRIDGE MOTOR DRIVERS

DRV8816
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FUNCTIONAL DESCRIPTION
SLRS063 – SEPTEMBER 2013
Power Supervisor
Control input nSLEEP is used to minimize power consumption when the DRV8816 is not in use. This disables
much of the internal circuitry, including the internal voltage rails and charge pump. nSLEEP is asserted low. A
logic high on this input pin results in normal operation. When switching from low to high, the user should allow a
1-ms delay before applying PWM signals. This time is needed for the charge pump to stabilize.
Bridge Control
The DRV8816 is controlled using separate enable and input pins for each ½-H-bridge.
The following table shows the logic for the DRV8816:
ENx
INx
OUTx
0
X
Z
1
0
L
1
1
H
If a single DC motor is connected to the DRV8816, it is connected between the OUT1 and OUT2 pins as shown
in the first image below. Two DC motors may also be connected to the DRV8816. In this mode, it is not possible
to reverse the direction of the motors; they will turn only in one direction. The connections are shown below:
OUT1
BDC
OUT2
OUT1
BDC
OUT2
BDC
VBB
BDC
OUT1
VBB
BDC
OUT2
Motor operation for a single brushed DC motor is controlled as follows:
EN1
EN2
IN1
IN2
OUT1
0
X
X
X
Z
X
0
X
X
See (1)
1
1
0
0
L
1
1
0
1
L
1
1
1
0
H
1
1
1
1
H
OUT2
See (1)
Z
L
H
L
H
Operation
Off (coast)
Off (coast)
Brake
Reverse
Forward
Brake
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