Overvoltage adjustment in TNY286
A flyback power supply based on TNY286 was tested and worked properly.
However ,overvoltage protection got activated at about 360VDC.
For test purposes bias winding was bypassed and problem was solved.
However, we need the OVP to be activated at 410Vdc.
Voltage on capacitor (10uf) on bias winding = 5.2V
What would be the best method to increase OVP threshold?
Sch is attached .