This is my first project with TOP drivers, so I have a few problems with that. I count for your's help.
I performanced the flyback converter with TOP 258YN driver (photos at attachment). My desired parameters are output voltage: 12V, output current 8A. But I can't achive the desired parameters. Maximum current is 1,23 A but voltage go down to 6,5V.
In attachment are results of my converter. My converter works in current limit but I don't know why.
One thing I can add the circuit which will help in switch off transistor (based on diode, capacitor and resistor), this circuit can reduce value of oscilating.
What do you thing about value of resistor in transoptor loop?
Could you help me in my problem, please?
Thanks for help.