DM311A Datasheet | Fairchild Semiconductor

FSDM311A - Green Mode Fairchild Power Switch (FPSTM) November 2007 FSDM311A Green Mode Fairchild Power Switch (FPS™) Features - Internal Avalanche-Rugged Sense FET - 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 Applications - Charger & Adapter for Mobile Phone, PDA, & MP3 - Auxiliary Power for White Goods, PC, C-TV, & Monitors Description The FSDM311A consists of an integrated Pulse Width Modulator (PWM) and Sense FET, and is specifically designed for high-performance, off-line, Switch-Mode Power Supplies (SMPS) with minimal external ponents. This device is an integrated high-voltage power switching regulator that bines a VDMOS Sense FET 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-pensated precision-current sources for loop pensation and fault protection circuitry. When pared to a discrete MOSFET and controller or RCC switching converter solution, the FSDM311A device reduces total ponent 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. 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...