Fairchild FSB127H满足2013 ErP Lot 6待机功率法规电源解决方案
原标题:Fairchild FSB127H满足2013 ErP Lot 6待机功率法规电源解决方案
Fairchild公司的FSB127H是满足2013 ErP Lot 6待机功率法规的绿色模式功率开关, 在单一封装解决方案中集成有先进的电流模式脉宽调制(PWM)和耐雪崩700V SenseFET.器件采用飞兆半导体的mWSaverTM技术,能够大幅降低待机功耗和无负载功耗,可以帮助设计人员解决实现低于0.5W待机模式功耗的难题。主要用在PC,服务器,LCD TV和游戏控制器的辅助电源, VCR, SVR, STB, DVD和DVCD,打印机和扫描仪的SMPS,通用适配器等.本文介绍了FSB127H主要特性,方框图, 典型反激应用电路和典型应用电路图.
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应用:
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
图1. FSB127H方框图
图2. FSB127H典型反激应用电路
图3. FSB127H典型应用电路图
图4. FSB127H变压器电路
责任编辑:HanFeng
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