Reference   Design	Part Number	Key Feature
19V4.75A	OB6683	l Single chip   integrated PFC controller and QR PWM controller l Built-in dual   output PFC control l Average   efficiency meet COCⅤtier2 l Standby   power less than 75mW @230V input
400V0.3A	OB6560	l QR or DCM   operation PFC l Valley switching   for min switching losses l AC Brownout and   external OTP protections l Dynamic and   static output OVP protection