Hi,
I'm working on a PSU module using two PTH08080WAD switching regulators set to generate 3.3V and 5V rails, which they do admirably.
However, I'm getting positive and negative spikes on the output side of the regulators, when I power the PSU module up without a load (the 5V regulator has a 1.2V LDO on it's output).
I'm using the recommended 100uF electrolytes on the input side (ESR is not specified) and powering the PSU module with 7V from a bench supply.
Since I've had some digital circuitry fail after being connected to the PSU module, I'm wondering if the spikes could be the cause and if anyone has a suggestion how to get rid of them?
Best regards,
Baldur