ACTIVE
SSC3S921
Package : SOP18 (Pin 13 and 17 Removed)
RoHS : YES
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 product includes useful functions such as Standby Function, Automatic Dead Time Adjustment, and Capacitive Mode Detection.
The product achieves high efficiency, low noise and high cost-performance power supply systems with few external components.
Data Download
Design Support
- Technical Documents
Technical Documents
Features
-
・Standby Mode Change Function
-Output Power at Light Load 125 mW (Pin = 0.27 W)
-Burst mode in standby operation
-Reduces audible noise by Soft-On/Soft-Off function
・PFC IC ON/OFF Function: In standby operation, the IC
turns off PFC IC.
・Floating Drive Circuit
・Soft-Start function
・Capacitive Mode Detection Function
・Reset Detection Function
・Automatic Dead Time Adjustment Function
・Brown-In and Brown-Out Function
・Built-in Startup Circuit
・Input Capacitor Discharge Function
・Protection Functions
- High-side Driver UVLO
- Overcurrent Protection (OCP): 2-step detection
- Overload Protection (OLP)
- Overvoltage Protection (OVP)
- Thermal Shutdown (TSD)
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 | |
| RDS(ON) (max.) | |
| VDSS (min.) | |
| VCC (max.) | 35 V |
| Oscillating Frequency(typ.) | 31.5 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 |
| Automotive Qualified | NO |
Typical Application
Block Diagram
Pin Configuration Definitions
Questions or Comments?
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