FSQ110: 650V Integrated Power Switch for 8Watt offline flyback converters
The FSQ110 consists of an integrated, current-mode, Pulse Width Modulator (PWM) and an avalanche-rugged 650V SenseFET. It is specifically designed for high-performance off-line Switch-Mode Power Supplies (SMPS) with minimal external components. The integrated PWM controller features include: a fixed-frequency generating oscillator, Under-Voltage Lockout (UVLO) protection, Leading-Edge Blanking (LEB), an optimized gate turn-on/ turn-off driver, Thermal Shutdown (TSD) protection, and temperature-compensated precision current sources for loop compensation and fault protection circuitry. Compared to a discrete MOSFET and controller or RCC switching converter solution, the FSQ110 reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability. These devices provide a basic platform that is well suited for the design of cost-effective flyback converters.
Features
- Internal Avalanche-Rugged 650V SenseFET
- Consumes only 0.65W at 230VAC & 0.3W Load with Burst-Mode Operation
- Precision Fixed Operating Frequency: 100KHz
- Internal Start-up Circuit and Built-in Soft-Start
- Pulse-by-Pulse Current Limiting and Auto-Restart Mode
- Over-Voltage Protection (OVP), Overload Protection (OLP), Internal Thermal Shutdown Function (TSD)
- Under-Voltage Lockout (UVLO)
- Low Operating Current: 3mA
- Adjustable Peak Current Limit
Ordering CodeProduct | Product & Eco Status | Unit Price/1K Order | Packing Method Convention | Package Marking Convention* |
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FSQ110 | Full Production
ROHS Compliant as of 27-Feb-2006
China RoHS | $0.598 | MDIP 8L
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RAIL | Line 1$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2Q110
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Application Notes
AN-4146 Design Guidelines for Quasi-Resonant Converters Using FSCQ-Series Fairchild Power Switch (FPS™) Last Update : 05-Mar-2011AN-4150 Design Guidelines for Flyback Converters Using FSQ-Series Fairchild Power Switch (FPS™) Last Update : 14-Jun-2011