Customer: SICK (Germany)
Platform: i.MX 8M-Mini + PF8200 (for safety purposes)
I got a question from SICK with regards to the PF8200. They work on the PF8100 FRDM EVM and have seen the following behavior:
During the power up sequence, some switches have voltage spikes during ramp ups. But the buck converter switch 3 (blue curve) has a spike at the regulated voltage as seen from the picture below:
Now this voltage from buck 3 goes to the i.MX 8M-Mini and it would be helpful to know why this happens. This spike does not happen when only switch 3 is ON and rest of the bucks are off.