SSC3S927L
SSC3S927L is LLC Current-Resonant Off-Line Switching Controller manufactured by Sanken.
LLC Current-Resonant Off-Line Switching Controller
Data Sheet
Description
The SSC3S927L 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-effective power supply systems with few external ponents.
- SMZ: Soft-switched Multi-resonant Zero Current switch, achieved soft switching operation during all switching periods.
Features
- Standby Mode Change Function ▫ Output Power at Light Load: PO = 150 m W (PIN = 0.27 W) ▫ Burst Operation in Standby Mode ▫ Soft-on/Soft-off Function: Reduces Audible Noise
- Soft-start Function
- Capacitive Mode Detection Function
- Reset Detection Function
- Automatic Dead Time Adjustment Function
- Built-in Startup Circuit
- X-capacitor Discharge Function
- Protections
▫ Input Voltage Detection Function Input Overvoltage Protection (HVP): Auto-restart Input Undervoltage Protection (UVP): Auto-restart
▫ High-side Driver UVLO: Auto-restart ▫ Overcurrent Protection (OCP): Auto-restart, Peak
Drain Current Detection, 2-step Detection ▫ Overload Protection (OLP): Auto-restart ▫ Overvoltage Protection (OVP): Auto-restart ▫ REG Overvoltage Protection (REG_OVP):
Auto-restart ▫ Thermal Shutdown (TSD): Auto-restart
Typical Application
X-Cap PFC OUT
VSEN VCC FB SB CSS CL RC CD
MODE
18 ST
16 VGH
15 VS
5 U1 14 VB
12 REG
11 VGL
10...
