Problem using PAC5524AEVK1 and peripheral_example pwm code

Power Solutions Intelligent Motor Controllers
1

Hello,

I’m using the PAC5524AEVK1 and the pac55xx_peripheral_example code provided by qorvo.
I am running the TEST_TIMER_PWM_SYMMETRIC test. I also tried the asymmetric code.

Upon turning on the board with voltages between 20-30V, the power supply detects a short and turns off.

If the PWM is shut down, then no shorts are present, and the board works properly.

I have nothing connected to the motor terminals. I’m afraid that if I connect a motor, I might damage the board.

I have attached pictures of the UH and UL pins from the oscilloscope.

uhul
uhul1909×752 179 KB

Thank you.

2

Hello,
I tried on my side with the same example code and it can work between 20V and 30V. What is the SDK version on your side? Did the short circuit happen at a certain voltage level or it happened when you change the voltage?

Heng

3

And also, could you please check if your MOSFETs are working correctly?