DRV8812

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SLVS997F – OCTOBER 2009 – REVISED AUGUST 2013

FUNCTIONAL DESCRIPTION

PWM Motor Drivers

The DRV8812 contains two H-bridge motor drivers with current-control PWM circuitry. A block diagram of the

motor control circuitry is shown in Figure 1. A bipolar stepper motor is shown, but the drivers can also drive two

separate DC motors.

Figure 1. Motor Control Circuitry

Note that there are multiple VM motor power supply pins. All VM pins must be connected together to the motor

supply voltage.

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