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This literature is subject to all applicable copyright laws and is not for resale in any manner.FSL126MR Green Mode Fairchild Power Switch (FPS) April 2012 FSL126MR Green Mode Fairchild Power Switch (FPS) Features Description The FSL126MR integrated Pulse Width Modulator Internal Avalanche-Rugged SenseFET (650V) (PWM) and SenseFET is specifically designed for high- Under 50mW Standby Power Consumption at performance offline Switch-Mode Power Supplies 265V , No-load Condition with Burst Mode AC (SMPS) with minimal external components. FSL126MR Precision Fixed Operating Frequency with includes integrated high-voltage power switching Frequency Modulation for Attenuating EMI regulators that combine an avalanche-rugged SenseFET with a current-mode PWM control block. Internal Startup Circuit Built-in Soft-Start: 15ms The integrated PWM controller includes: Under-Voltage Lockout (UVLO) protection, Leading-Edge Blanking Pulse-by-Pulse Current Limiting (LEB), a frequency generator for EMI attenuation, an Various Protections: Over-Voltage Protection optimized gate turn-on/turn-off driver, Thermal (OVP), Overload Protection (OLP), Output-Short Shutdown (TSD) protection, and temperature- Protection (OSP), Abnormal Over-Current compensated precision current sources for loop Protection (AOCP), Internal Thermal Shutdown compensation and fault protection circuitry. The Function with Hysteresis (TSD) FSL126MR offers good soft-start performance. When Auto-Restart Mode compared to a discrete MOSFET and controller or RCC switching converter solution, the FSL126MR reduces Under-Voltage Lockout (UVLO) total component count, design size, and weight while Low Operating Current: 1.8mA increasing efficiency, productivity, and system reliability. This device provides a basic platform that is well suited Adjustable Peak Current Limit for the design of cost-effective flyback converters. Applications (1) Maximum Output Power SMPS for VCR, STB, DVD, & DVCD Players (2) 230V 15% 85-265V AC AC SMPS for Home Appliance Open Open (3) (3) Adapter Adapter Adapter Frame Frame 15W 21W 12W 17W Related Resources Notes: AN-4137 Design Guidelines for Off-line Flyback 1. The junction temperature can limit the maximum Converters using FPS output power. 2. 230V or 100/115V with doubler. AC AC AN-4141 Troubleshooting and Design Tips for 3. Typical continuous power in a non-ventilated Fairchild Power Switch (FPS) Flyback enclosed adapter measured at 50C ambient. Applications AN-4147 -Design Guidelines for RCD Snubber of Flyback Evaluation Board: FEBFSL126MR H432v1 Fairchild Power Supply WebDesigner Flyback Design & Simulation - In Minutes at No Expense Ordering Information Operating Part Number Top Mark Package Packing Method Temperature Range FSL126MR -40 to 105C FSL126MR 8-Lead, Dual Inline Package (DIP) Rail 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSL126MR Rev. 1.0.1