Other Parts Discussed in Thread: DRV8305-Q1EVM
Given 24V voltage, input three sets of PWM including dead zone settings, the voltage amplitude is 3.3V, there is no problem in the third PWM test. When connected to the driver board and led out from the terminal to the oscilloscope, the third LOW PWM voltage is only a few hundred millivolts, and the third phase voltage motC is always high level 24V. The customer wants to confirm if the board is broken?
Location of oscilloscope wiring
The third PWM signal at the beginning
PWM signal when connected to the drive board
The purple line is the signal of motC, all are high level