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[FAQ] DRV8703-Q1EVM: DRV8702/03-Q1 EVM GUI/MCU output PWM Duty polarity- flipped

Part Number: DRV8703-Q1EVM
Other Parts Discussed in Thread: DRV8702-Q1, DRV8703-Q1


This is topic for DRV8702-Q1 and DRV8703-Q1 EVM.

DRV8702/03-Q1 GUI can select PWM duty cycle from MCU GPIO on EVM

On PWM mode, IN1/IN2 polarity is not matching between GUI setting and MCU GPIO output. They are flipped.

Here is example,

If IN1=0% Duty on GUI, MCU GPIO for IN1 output 100% high.


This is NOT device(DRV8702/03-Q1) issue. GUI and MCU's output polarity issue on EVM.

Other mode(Independent mode, PH/EN mode)  does not have this polarity flip.

<<Independent mode test result>>