Sharp LC-60LE651K Handy Guide ▷ View online
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CE After Sales Service
CE After Sales Service
Block Diagrams
Major IC Information PSU
October 2013
Features…cont
• Bias-Assist Function, reducing Operating VCC voltage drop. The function improves the startup operation and makes a
low VCC capacitor applicable.
• Leading Edge Blanking Function.
• Slope Compensation Function.
• Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET.
• Various Protections.
• Bias-Assist Function, reducing Operating VCC voltage drop. The function improves the startup operation and makes a
low VCC capacitor applicable.
• Leading Edge Blanking Function.
• Slope Compensation Function.
• Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET.
• Various Protections.
o Overcurrent Protection (OCP) Pulse-by-Pulse.
o Overload Protection (OLP) Auto-Restart.
o Overvoltage Protection (OVP) Latch Shutdown.
o Thermal Shutdown Protection (TSD) Latch Shutdown.
Issued by:
CE After Sales Service
CE After Sales Service
Block Diagrams
Major IC Information PSU
October 2013
U501: 5Vs/5.75V control PWM circuit (STANDBY CONTROLLER) (ONLY:RUNTKB074WJQZ/FSP202-4FS01)
Part number: FSB127H
http://www.fairchildsemi.com/pf/FS/FSB127H.html
General Descriptions
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 avalanche-rugged 700V SenseFET in a single package.
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.
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 avalanche-rugged 700V SenseFET in a single package.
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.
Features
• 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
• 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
Issued by:
CE After Sales Service
CE After Sales Service
Block Diagrams
Major IC Information PSU
October 2013
Features…cont
• 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
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
• 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
• 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
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
• 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
Issued by:
CE After Sales Service
CE After Sales Service
Main Unit
– System
Power
Schematic Diagrams
39” & 50”
October 2013
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