Hi,
I am trying to power on the UCC28070 300-W Interleaved PFC EVM. I followed the below steps and i did not get 390V at output. Am i missing anything here? my setup is 230VAC from socket --> UCC28070EVM ---> UCC25600EVM ---> Resistor load (2Ohms/200W).
1. Initially i missed to connect the daughter board in UCC28070 EVM and missed to connect 14V bias and powered on the setup. i got 317V at PFC output.
2. then i connected the daughter board and 14V bias and powered on the setup. Now i am getting 7V at PFC output.
Whether UCC28070 EVM will damage if i power it without daughter board and bias supply?
Regards,
Veera