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FSDM0465RB Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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FSDM0465RB Datasheet(HTML) 1 Page - Fairchild Semiconductor |
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©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com Rev.1.0.0 FPSTM is a trademark of Fairchild Semiconductor Corporation Features • Internal Avalanche Rugged SenseFET • Advanced Burst-Mode Operation Consumes Under One W at 240VAC & 0.5W Load • Precision Fixed Operating Frequency (66kHz) • Internal Start-up Circuit • Improved Pulse by Pulse Current Limiting • Over Voltage Protection (OVP) : Auto-Restart • Over Load Protection (OLP): Auto-Restart • Internal Thermal Shutdown (TSD) : Auto-Restart • Under Voltage Lock Out (UVLO) with Hysteresis • Low Operating Current (2.5mA) • Built-in Soft Start Application • SMPS for LCD monitor and STB •Adapter Related Application Notes • AN4137 - Design Guidelines for Off-line Flyback Converters Using Fairchild Power Switch (FPS) • AN4140 - Transformer Design Consideration for Off-line Flyback Converters Using Fairchild Power Switch • AN4141 - Troubleshooting and Design Tips for Fairchild Power Switch Flyback Applications • AN4148 - Audible Noise Reduction Techniques for FPS Applications Description The FSDM0465RB is an integrated Pulse Width Modulator (PWM) and SenseFET specifically designed for high performance offline Switch Mode Power Supplies (SMPS) with minimal external components. This device is an integrated high voltage power switching regulator which combines a rugged avalanche, SenseFET with a current mode PWM control block. The PWM controller includes integrated fixed frequency oscillator, under voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft start, temperature compensated precise current sources for a loop compensation and self protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the PWM/ FSDMRB can reduce total cost, component count, size and weigh, while simultaneously increasing efficiency, productivity, and system reliability. This device provides a basic platform well suited for cost-effective designs of flyback converters. Table 1. Maximum Output Power Notes: 1. Typical continuous power in a non-ventilated enclosed adapter measured at 50 °C ambient. 2. Maximum practical continuous power in an open frame design at 50 °C ambient. 3. 230 VAC or 100/115 VAC with doubler. 4. The junction temperature can limit the maximum output power. Typical Circuit Figure 1. Typical Flyback Application OUTPUT POWER TABLE (4) PRODUCT 230VAC ±15%(3) 85-265VAC Adapt- er(1) Open Frame(2) Adapt- er(1) Open Frame(2) FSDM0465RB 48W 56W 40W 48W FSDM0565RB 60W 70W 50W 60W FSDM07652RB 70W 80W 60W 70W FSDM12652RB 90W 110W 80W 90W Drain Source Vstr Vfb Vcc PWM AC IN DC OUT FSDM0465RB Green Mode Fairchild Power Switch (FPSTM) |
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