ACTIVE
SSC3S937
Package : SOP18 (Pin 13 and 17 Removed)
RoHS : YES
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.
Data Download
Design Support
- Technical Documents
Technical Documents
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-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
–Soft-on/Soft-off Function: Reduces Audible Noise
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 | |
RDS(ON) (max.) | |
VDSS (min.) | |
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 |
Automotive Qualified | NO |
Typical Application
Block Diagram
Pin Configuration Definitions
Questions or Comments?
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