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FSDH321 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FSDH321 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
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1 / 20 page  ©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev.1.0.5 FPSTM is a trademark of Fairchild Semiconductor Corporation. Features • Internal Avalanche Rugged Sense FET • Consumes only 0.65W at 240VAC & 0.3W load with Advanced Burst-Mode Operation • Frequency Modulation for EMI Reduction • Precision Fixed Operating Frequency • Internal Start-up Circuit • Pulse-by-Pulse Current Limiting • Abnormal Over Current Protection (AOCP) • Over Voltage Protection (OVP) • Over Load Protection (OLP) • Internal Thermal Shutdown Function (TSD) • Auto-Restart Mode • Under Voltage Lockout (UVLO) • Low Operating Current (max 3mA) • Adjustable Peak Current Limit • Built-in Soft Start Applications • SMPS for STB, Low cost DVD Player • Auxiliary Power for PC • Adapter & Charger Related Application Notes • AN-4137, 4141, 4147(Flyback) / AN-4134(Forward) Description Each product in the FSDx321 (x for H, L) family 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 components. Both devices are integrated high volt- age power switching regulators which combine an avalanche rugged Sense FET with a current mode PWM control block. The integrated PWM controller features include: a fixed oscillator with frequency modulation for reduced EMI, Under Voltage Lock Out (UVLO) protection, Leading Edge Blanking (LEB), an optimized gate turn-on/turn-off driver, Thermal Shut Down (TSD) protection, Abnormal Over Cur- rent Protection (AOCP) and temperature compensated preci- sion current sources for loop compensation and fault protection circuitry. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSDx321 devices reduce total component count, design size, weight while increasing efficiency, productivity and system reliability. Both devices provide a basic platform that is well suited for the design of cost-effective flyback converters. Notes: 1. Typical continuous power in a non-ventilated enclosed adapter with sufficient drain pattern as a heat sinker, at 50 °C ambient. 2. Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sinker, at 50 °C ambient. 3. 230 VAC or 100/115 VAC with doubler. Typical Circuit Figure 1. Typical Flyback Application OUTPUT POWER TABLE PRODUCT 230VAC ±15%(3) 85-265VAC Adapt- er(1) Open Frame(2) Adapt- er(1) Open Frame(2) FSDL321 11W 17W 8W 12W FSDH321 11W 17W 8W 12W FSDL0165RN 13W 23W 11W 17W FSDM0265RN 16W 27W 13W 20W FSDH0265RN 16W 27W 13W 20W FSDL0365RN 19W 30W 16W 24W FSDM0365RN 19W 30W 16W 24W FSDL321L 11W 17W 8W 12W FSDH321L 11W 17W 8W 12W FSDL0165RL 13W 23W 11W 17W FSDM0265RL 16W 27W 13W 20W FSDH0265RL 16W 27W 13W 20W FSDL0365RL 19W 30W 16W 24W FSDM0365RL 19W 30W 16W 24W Drain Source Vstr Vfb Vcc PWM AC IN DC OUT Ipk FSDH321, FSDL321 Green Mode Fairchild Power Switch (FPSTM) |
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