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FSB117H Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – mWSaver™ Fairchild Power Switch (FPS™) | |||
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FSB117H / FSB127H / FSB147H
mWSaver⢠Fairchild Power Switch (FPSâ¢)
April 2012
Features
mWSaver⢠Technology
ï§ Achieve Low No-Load Power Consumption Less
than 40mW at 230VAC (EMI Filter Loss Included)
ï§ Meets 2013 ErP Standby Power Regulation (Less
than 0.5W Consumption with 0.25W Load) for ATX
Power and LCD TV Power
ï§ Eliminate X-Cap Discharge Resistor Loss with
Ax-CAP⢠Technology
ï§ Linearly Decreased Switching Frequency at Light-
Load Condition and Advanced Burst Mode
Operation at No-Load Condition
ï§ 700V High-Voltage JFET Startup Circuit to
Eliminate the Startup Resistor Loss
Highly Integrated with Rich Features
ï§ Internal Avalanche-Rugged 700V SenseFET
ï§ Built-in 5ms Soft-Start
ï§ Peak-Current-Mode Control
ï§ Cycle-by-Cycle Current Limiting
ï§ Leading-Edge Blanking (LEB)
ï§ Synchronized Slope Compensation
ï§ Proprietary Asynchronous Jitter to Reduce EMI
Advanced Protection
ï§ Internal Overload / Open-Loop Protection (OLP)
ï§ VDD Under-Voltage Lockout (UVLO)
ï§ VDD Over-Voltage Protection (OVP)
ï§ Constant Power Limit (Full AC Input Range)
ï§ Internal Auto Restart Circuit (OLP, VDD OVP, OTP)
ï§ Internal OTP Sensor with Hysteresis
ï§ Adjustable Peak Current Limit
Related Resources
ï§ Evaluation Board: FEBFSB127H_T001
ï§ Fairchild Power Supply WebDesigner â Flyback
Design & Simulation - In Minutes at No Expense
Description
The FSB-series is a next-generation, green-mode
Fairchild Power Switch (FPSâ¢) incorporating Fairchildâs
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 current-
mode pulse width modulator (PWM) and an avalanche-
rugged 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 Semiconductorâs 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.
Applications
General-purpose switched-mode power supplies and
flyback power converters, including:
ï§ Auxiliary Power Supply for PC, Server, LCD TV,
and Game Console
ï§ SMPS for VCR, SVR, STB, DVD, and DVCD
Player, Printer, Facsimile, and Scanner
ï§ General Adapter
ï§ LCD Monitor Power / Open-Frame SMPS
© 2011 Fairchild Semiconductor Corporation
FSB117H / FSB127H / FSB147H ⢠Rev. 1.0.5
www.fairchildsemi.com
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