DRV8876PWPR datasheet(28/51 Pages) TI2

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DRV8876

SLVSDS7B – AUGUST 2019 – REVISED NOVEMBER 2019

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Chan. 1 = OUT1

Chan. 2 = OUT2

Chan. 3 = EN/IN1

Chan 4 = IOUT

Figure 33. Driver PWM Operation (PH/EN)

Chan. 1 = OUT1

Chan. 2 = OUT2

Chan. 3 = IPROPI

Chan 4 = IOUT

Figure 34. Driver PWM Operation With Current Feedback

Chan. 1 = OUT1

Chan. 2 = OUT2

Chan. 3 = EN/IN1

Chan 4 = IOUT

Figure 35. Driver PWM Operation With Current Chopping

Chan. 1 = OUT1

Chan. 2 = OUT2

Chan. 3 = EN/IN1

Chan 4 = IOUT

Figure 36. Driver Full On Operation With Current Chopping

8.2.2 Alternative Application

In the alternative application example, the device is configured to drive a unidirectional current through two

external loads (such as two brushed DC motors) using a dual half-bridge configuration. The duty cycle of each

half-bridge is controlled with a PWM resource from the external controller to the EN/IN1 and PH/IN2 pins. The

device is configured for the independent half-bridge control mode by leaving the PMODE pin floating. Since the

current regulation scheme is disabled in the independent half-bridge control mode, the VREF pin is tied to VCC.

The combined load current is monitored with an ADC from the controller to detect the voltage across RIPROPI.

DRV8876PWPR Datasheet(PDF) 28 Page - Texas Instruments