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FAN6755WMY Folha de dados(PDF) 1 Page - Fairchild Semiconductor |
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FAN6755WMY Folha de dados(HTML) 1 Page - Fairchild Semiconductor |
1 / 17 page May 2013 © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN6755W / FAN6755UW • Rev. 1.0.7 FAN6755W / FAN6755UW mWSaver ™ PWM Controller Features mWSaver™ Technology Provides Industry’s Best- in-Class Standby Power - <100 mW at 25-mW Load for LCDM Adaptor - Internal High-Voltage JFET Startup - Low Operating Current: Under 2 mA - Adaptively Decrease PWM Frequency to 23 kHz at Light-Load Condition for Better Efficiency - Feedback Impedance Switching During Minimum Load or No Load Proprietary Asynchronous Frequency Hopping Technique that Reduces EMI Fixed PWM Frequency: 65 kHz (FAN6755W), 130 kHz (FAN6755UW) Internal Leading-Edge Blanking Built-in Synchronized Slope Compensation Auto-Restart Protection: Feedback Open-Loop Protection (OLP), VDD Over-Voltage Protection (OVP), Over-Temperature Protection (OTP), and Line Over-Voltage Protection Soft Gate Drive with Clamped Output Voltage: 18 V V DD Under-Voltage Lockout (UVLO) Programmable Constant Power Limit (Full AC Input Range) Internal OTP Sensor with Hysteresis Build-in 5-ms Soft-Start Function Input Voltage Sensing (V IN Pin) for Brown-In/Out Protection with Hysteresis and Line Over-Voltage Protection Applications General-purpose switched-mode power supplies and flyback power converters, including: LCD Monitor Power Supply Open-Frame SMPS Description This highly integrated PWM controller provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary adaptive green-mode function reduces switching frequency at light-load condition. To avoid acoustic- noise problems, the minimum PWM frequency is set above 23 kHz. This green-mode function enables the power supply to meet international power conservation requirements, such as Energy Star ®. With the internal high-voltage startup circuitry, the power loss caused by bleeding resistors is also eliminated. To further reduce power consumption, FAN6755W/UW uses the BiCMOS process, which allows an operating current of only 2 mA. The standby power consumption can be under 100 mW for most of LCD monitor power supply designs. FAN6755W/UW integrates a frequency-hopping function that reduces EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation achieves a stable peak-current- mode control and improves noise immunity. The proprietary line compensation ensures constant output power limit over a wide AC input voltage range from 90 VAC to 264 VAC. FAN6755W/UW provides many protection functions. The internal feedback open-loop protection circuit protects the power supply from open-feedback-loop condition or output-short condition. It also has line under-voltage protection (brownout protection) and over-voltage protection using an input voltage sensing pin (VIN). FAN6755W/UW is available in a 7-pin SOP package. ENERGY STAR® is a registered trademark of the U.S. Department of Energy and the U.S. Environmental Protection Agency. |
Nº de peça semelhante - FAN6755WMY |
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Descrição semelhante - FAN6755WMY |
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