Part Number:PMP20199
Hi Expert,
I have implemented a 54V 30W power supply using the UCC28700. The supply has another secondary winding for 4V output. When observing the start up both the outputs, the 54V output seems to rise above 57V. I think this is causing a Over-Voltage Protection event to take place. Due to this reason the Secondary 2 winding output is dropping for around 100ms. I have attached the startup waveforms for both the outputs.
Can you please suggest a solution.
Thank you.
Regards,
Mikha.(Please visit the site to view this file)