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Fairchild公司的FSB127H是滿足2013 ErP Lot 6待機功率法規(guī)的綠色模式功率開關(guān), 在單一封裝解決方案中集成有先進的電流模式脈寬調(diào)制(PWM)和耐雪崩700V SenseFET.器件采用飛兆半導(dǎo)體的mWSaverTM技術(shù)，能夠大幅降低待機功耗和無負載功耗，可以幫助設(shè)計人員解決實現(xiàn)低于0.5W待機模式功耗的難題。主要用在PC,服務(wù)器,LCD TV和游戲控制器的輔助電源, VCR, SVR, STB, DVD和DVCD,打印機和掃描儀的SMPS,通用適配器等.本文介紹了FSB127H主要特性,方框圖, 典型反激應(yīng)用電路和典型應(yīng)用電路圖. The FSB127H is a next-generation, green-mode Fairchild Power Switch (FPS™) incorporating Fairchild’s innovative mWSaver™ technology, which dramatically reduces standby and no-load power consumption, enabling conformance to all worldwide Standby Mode efficiency guidelines. It integrates an advanced currentmode pulse width modulator (PWM) and an avalancherugged 700V SenseFET in a single package, allowing auxiliary power designs with higher standby energy efficiency, reduced size, improved reliability, and lower system cost than previous solutions. Fairchild Semiconductor’s mWSaver™ technology offers best-in-class minimum no-load and light-load power consumption. An innovative Ax-CAP™ method, one of the five proprietary mWSaver™ technologies, minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors while still meeting IEC61010-1 safety requirement. mWSaver™ Green Mode gradually decreases switching frequency as load decreases to minimize switching losses. A new proprietary asynchronous jitter decreases EMI emission and built-in synchronized slope compensation allows stable peak-current-mode control over a wide range of input voltage. The proprietary internal line compensation ensures constant output power limit over entire universal line voltage range. Requiring a minimum number of external components, FSB127H provides a basic platform that is well suited for the cost-effective flyback converter design with low standby power consumption. FSB127H主要特性: MWSaver™ Technology Achieve Low No-Load Power Consumption Less than 40mW at 230VAC (EMI Filter Loss Included) Meet 2013 ErP Standby Power Regulation (Less than 0.5W Consumption with 0.25W Load) for ATX Power and LCD TV Power Eliminate X-Cap Discharge Resistor Loss with Ax-CAP™ Technology Linearly Decreased Switching Frequency at Light- Load Condition and Advanced Burst Mode Operation at No-Load Condition 700V High-Voltage JFET Startup Circuit to Eliminate the Startup Resistor Loss Highly Integrated with Rich Features Internal Avalanche-Rugged 700V SenseFET Built-in 10ms Soft-Start Peak-Current-Mode Control Cycle-by-Cycle Current Limiting Leading-Edge Blanking (LEB) Synchronized Slope Compensation Proprietary Asynchronous Jitter to Reduce EMI Advanced Protection Internal Overload / Open-Loop Protection (OLP) VDD Under-Voltage Lockout (UVLO) VDD Over-Voltage Protection (OVP) Constant Power Limit (Full AC Input Range) Internal Auto Restart Circuit (OLP, VDD OVP, OTP) Internal OTP Sensor with Hysteresis Adjustable Peak Current Limit FSB127H應(yīng)用: General-purpose switched-mode power supplies and flyback power converters, including: Auxiliary Power Supply for PC, Server, LCD TV, and Game Console SMPS for VCR, SVR, STB, DVD, and DVCD Player, Printer, Facsimile, and Scanner General Adapter LCD Monitor Power / Open-Frame SMPS 
圖1. FSB127H方框圖
圖2. FSB127H典型反激應(yīng)用電路
圖3. FSB127H典型應(yīng)用電路圖
圖4. FSB127H變壓器電路 詳情請見: 
FSB127H.pdf
(1.07 MB)
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