Fairchild公司的FSB1x7H系列是滿足2013 ErP Lot 6待機功率法規的綠色模式功率開關, 在單一封裝解決方案中集成有先進的電流模式脈寬調制(PWM)和耐雪崩700V SenseFET.器件采用飛兆半導體的mWSaverTM技術，能夠大幅降低待機功耗和無負載功耗，可以幫助設計人員解決實現低于0.5W待機模式功耗的難題。主要用在PC,服務器,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FSB117H / FSB127H / FSB147H主要特性,方框圖, FSB117H典型應用電路圖以及FEBFSB127H_T001評估板主要特性,電路圖,材料清單和PCB布局圖.
The FSB-series 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, the FSB-series provides a basic platform that is well suited for the cost-effective flyback converter design with low standby power consumption.
FSB117H / FSB127H / FSB147H主要特性:
mWSaver™ Technology
? Achieve Low No-Load Power Consumption Less than 40mW at 230VAC (EMI Filter Loss Included)
? Meets 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 5ms 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
FSB117H / FSB127H / FSB147H應用:
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.FSB117H / FSB127H / FSB147H方框圖
圖2.FSB117H典型應用電路圖
FEBFSB127H_T001評估板
This user guide supports the 16W evaluation board for ATX standby using FSB127H. It should be used in conjunction with the FSB127H datasheet as well as Fairchild’sapplication notes and technical support team.
The highly integrated FSB-series consists of an integrated Current Mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components.
Compared with a discrete MOSFET and controller or RCC switching converter solution, the FSB-series reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability. These devices provide a basic platform for the design of cost-effective flyback converters, as in PC auxiliary power supplies.
圖3. FEBFSB127H_T001評估板外形圖
FEBFSB127H_T001評估板配置:
? Input Voltage: 90VAC – 264VAC
? Output Voltage: 5V
? Output Current: 0 – 3.2A
? Operation Frequency: 100kHz
圖4.FEBFSB127H_T001評估板電路圖
圖5.評估板電路PCB布局圖
FEBFSB127H_T001評估板材料清單:
圖6.變壓器指標
變壓器繞組指標:
詳情請見:
http://www.fairchildsemi.com/ds/FS/FSB127H.pdf
以及
http://www.fairchildsemi.com/ds/FS/FSEZ1317A.pdf
和
http://www.fairchildsemi.com/products/evaluationboards/FEBFSEZ1317A_CH310v3.pdf?user-guide=%3CIMG+alt%3D%22%22+src%3D%22pdf_icon.gif%22+align%3DabsMiddle+border%3D0%3E+User+Guide
