SLVSGF5A May 2023 – December 2023 DRV8845
PRODUCTION DATA
Each of the four H-bridges have independent PWM current control circuitry, that makes the DRV8845 capable of driving the following configurations -
Two stepper motors
One stepper motor and two BDC motors
Four BDC motors
In addition, H-bridge 3 and H-bridge 4 can be paralleled together. To enable this, PHASE4 must be left OPEN at start-up or when the device exits from sleep mode. By paralleling the two H-bridges, the DRV8845 supports two more configurations -
One stepper motor (H-bridge 1 and 2) and one BDC motor (paralleled H-bridge 3, 4)
Three BDC motors (H-bridge 1, H-bridge 2, paralleled H-bridge 3, 4)
Each H-bridge can deliver up to 1.5 A current. When paralleled, the combined H-bridge 3 and 4 can deliver up to 3 A current. Ensure OUT3A is shorted to OUT4A, OUT3B is shorted to OUT4B and SENSE3 is shorted to SENSE4 pin.