ACTIVE
SSC3S910
Package：SOP18
The SSC3S910 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 product includes useful functions such as the Standby Function, the Overload Protection with input voltage compensation, the Automatic Dead Time Adjustment, and the Capacitive Mode Detection. The product achieves high efficiency, low noise and high cost-performance power supply systems with few external components.
*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 = 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
・ Realizing power supply with universal mains input
voltage
・ Soft-start Function
・ Capacitive Mode Detection Function
・ Reset Detection Function
・ Automatic Dead Time Adjustment Function
・ Built-in Startup Circuit
・ Input Electrolytic Capacitor Discharge Function
・ Protections
- Brown-In and Brown-Out Function: Auto-restart
- High-side Driver UVLO: Auto-restart
- Overcurrent Protection (OCP): Auto-restart,
peak drain current detection, 2-step detection
- Overload Protection (OLP) with Input Voltage
Compensation: Auto-restart
- Overvoltage Protection (OVP): Auto-restart
- Thermal Shutdown (TSD): Auto-restart
Application
-
Switching power supplies for electronic devices such as:
・Digital appliances
・Office automation (OA) equipment
・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.) | 32 to 300 kHz |
| OCP | YES |
| OLP | Auto Restart |
| OVP | Auto Restart |
| Brown-in / out | YES |
| TSD | Auto Restart |
| Power Consumption at No Load | |
| Package Weight (Typ.) | 0.27 g |
Typical Application
Block Diagram
Pin Configuration Definitions
Questions or Comments?
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