SSC3S921 - Sanken

SSC3S921 LLC Current-Resonant Off-Line Switching Controller

The SSC3S921 is a controller with SMZ* method for LLC current resonant switching power supplies, incorporating a floating drive circuit for a high-side power MOSFET. The IC includes useful functions such as Standby Function, Automatic Dead Time Adjustment, and Capacitive Mode Detection. The IC achieves high efficiency, low noise and high cost-performance pow.

Features

● Standby Mode Change Function ▫ Output Power at Light Load: PO = 125 mW (PIN = 0.27 W, as a reference with discharge resistor of 1MΩ for across the line capacitor) ▫ Burst operation in standby mode ▫ Soft-on/Soft-off function: reduces audible noise
● PFC IC ON/OFF Function: In standby operation, the IC turns off PFC IC.
● Soft-start Function
● Capacitive Mode Detection Function
● Reset Detection Function
● Automatic Dead Time Adjustment Function
● Input Electrolytic Capacitor Discharge Function
● Protections ▫ Brown-In and Brown-Out Function: ▫ High-side Driver UVLO: Auto-restart: Auto-restar.