The ROHM PWM type isolated AC/DC converter output reference board has built-in 650 V SJ-FET and start up circuit. It has adjustable under voltage lock out by BR terminal and adjustable AC over voltage protection by ZT terminal. PWM frequency of 130 kHz
PWM current mode method
Built-in frequency hopping function
Burst operation at light load
Frequency reduction function
Over current limiter function per cycle
Over current limiter with AC voltage correction
Soft start function
Brown IN/OUT function
ZT pin OVP function