Dear Michael,
Thanks for reply.
In no load situation, the voltage output still with no ripple (see below).
When my board is turned on, mainly on 220V AC, this triangular ripple appears (see below).
Please, see attached our schematic. The power supply…
Other Parts Discussed in Thread: UCC28600 We replaced our power supply (SMPS) by one based on EVM PMP6833 that uses UCC28600D regulator. Well, this time we were in the final test with first batch of equipment fitted with this new power supply (in this…