NEW

SSC3S937

Data Sheet(1.0MB)


Package Image

Package：SOP18

The SSC3S937 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 components.
*SMZ: Soft-switched Multi-resonant Zero Current switch, achieved soft switching operation during all switching periods.

Design Support

Related Documents

■Other

See More

Close

Features

    • Pb-free (RoHS Compliant)
    • Standby Mode Change Function
      –Output Power at Light Load:
      PO = 150 mW (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 (AC Input Mode)
    • Input Capacitor Discharge Function (DC Input Mode)
    • Protections
      –Input Voltage Protection
      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, Two Types Protection
      – Overload Protection (OLP): Auto-restart
      –VCC Pin Overvoltage Protection (VCC_OVP): Auto-restart
      –REG Pin Overvoltage Protection (REG_OVP): Auto-restart
      – Thermal Shutdown (TSD): Auto-restart

Application

    • Switching power supplies for electronic devices such as:
    • Digital Appliances (e.g., Television)
    • Office Automation (OA) Equipment (e.g., Server, Multi¬Function Printer)
    • Industrial Apparatus)
    • Communication Facilities

Specifications

Control Method Current Resonant
Type Controller
Output Current W
RDS(ON) (max.) Ω
VDSS (min.) V
VCC (max.) 35 V
Oscillating Frequency(typ.) 31.5 to 300 kHz
OCP YES
OLP Auto Restart / Latch
OVP Auto Restart / Latch
Brown-in / out YES
TSD Auto Restart
Power Consumption at No Load
Package Weight (Typ.) 0.27 g

Typical Application

Typical Application

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

Questions or Comments?

Please feel free to contact us if you cannot find the desired product from the lineup.