FSGM300N

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This literature is subject to all applicable copyright laws and is not for resale in any manner. FSGM300N Green-Mode Fairchild Power Switch (FPS™) Features Description  Advanced Burst-Mode Operation for Low The FSGM300N is an integrated Pulse Width Modulation (PWM) controller and SenseFET specifically designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components. The PWM controller includes an integrated fixed-frequency oscillator, Under-Voltage Lockout (UVLO), LeadingEdge Blanking (LEB), optimized gate driver, internal soft-start, temperature-compensated precise current sources for loop compensation, and self-protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSGM series can reduce total cost, component count, size, and weight; while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform suited for cost-effective design of a flyback converter. Standby Power  Random Frequency Fluctuation for Low EMI  Pulse-by-Pulse Current Limit  Various Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD) with Hysteresis, Output-Short Protection (OSP), and Under-Voltage Lockout (UVLO) with Hysteresis  Auto-Restart Mode  Internal Startup Circuit  Internal High-Voltage SenseFET: 650V  Built-in Soft-Start: 15ms Related Resources Applications   Power Supply for LCD Monitor, STB and DVD Fairchild Power Supply WebDesigner — Flyback Design & Simulation - In Minutes at No Expense Combination Ordering Information (2) Part Number FSGM300N Output Power Table Operating Current RDS(ON) 230V ± 15%(3) 85-265VAC AC Package Junction Limit (Max.) Open Open (4) (4) Temperature Adapter (5) Adapter (5) Frame Frame 8-DIP -40°C ~ +125°C 1.60A 2.2Ω 26W 40W 20W 30W Replaces Device FSFM300N Notes: 1. Pb-free package per JEDEC J-STD-020B. 2. The junction temperature can limit the maximum output power. 3. 230VAC or 100/115VAC with voltage doubler. 4. Typical continuous power in a non-ventilated enclosed adapter measured at 50°C ambient temperature. 5. Maximum practical continuous power in an open-frame design at 50°C ambient temperature. © 2009 Fairchild Semiconductor Corporation FSGM300N • Rev. 1.0.3 www.fairchildsemi.com FSGM300N — Green-Mode Fairchild Power Switch (FPS™) April 2012 FSGM300N — Green-Mode Fairchild Power Switch (FPS™) Application Circuit Figure 1. Typical Application Circuit Internal Block Diagram VSTR VCC Drain 5 2 6, 7, 8 ICH Vburst 0.5V / 0.7V Vref VCC good 7.7V / 12V Random VCC Vref IDELAY OSC Soft-Start IFB PWM FB 3 S Q R Q Gate Driver 3R N.C. LEB(400ns) R 4 tON