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FSDM311A

Fairchild Semiconductor
Part Number FSDM311A
Manufacturer Fairchild Semiconductor
Description Green Mode Fairchild Power Switch
Published Mar 21, 2011
Detailed Description FSDM311A — Green Mode Fairchild Power Switch (FPSTM) November 2007 FSDM311A Green Mode Fairchild Power Switch (FPS™) F...
Datasheet PDF File FSDM311A PDF File

FSDM311A
FSDM311A


Overview
FSDM311A — Green Mode Fairchild Power Switch (FPSTM) November 2007 FSDM311A Green Mode Fairchild Power Switch (FPS™) Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Internal Avalanche-Rugged SenseFET Precision Fixed Operating Frequency: 67KHz Consumes Under 0.
2W at 265VAC & No Load with Advanced Burst-Mode Operation Internal Start-up Circuit Pulse-by-Pulse Current Limiting Over-Voltage Protection (OVP) Overload Protection (OLP) Internal Thermal Shutdown Function (TSD) Auto-Restart Mode Under-Voltage Lockout (UVLO) with Hysteresis Built-in Soft-Start Secondary-Side Regulation Description The FSDM311A consists of an integrated Pulse Width Modulator (PWM) and SenseFET, and is specifically designed for high-performance, off-line, Switch-Mode Power Supplies (SMPS) with minimal external components.
This device is an integrated high-voltage power switching regulator that combines a VDMOS SenseFET with a voltage-mode PWM control block.
The integrated PWM controller features include a fixed oscillator, Under-Voltage Lockout (UVLO) protection, Leading-Edge Blanking (LEB), an optimized gate turnon/turn-off driver, Thermal Shutdown (TSD) protection, and temperature-compensated precision-current sources for loop compensation and fault protection circuitry.
When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSDM311A device reduces total component count and design size and weight, while increasing efficiency, productivity, and system reliability.
This device provides a basic platform that is well suited for the design of cost-effective flyback converters.
Applications ƒ ƒ Charger & Adapter for Mobile Phone, PDA, & MP3 Auxiliary Power for White Goods, PC, C-TV, & Monitors Related Resources AN-4134: Design Guidelines for Off-line Forward Converters Using Fairchild Power Switch (FPS™) AN-4137: Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS™) AN-4138: Design Considerations for Battery Charger Using Green Mode Fairchild...


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