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FSL136HR — Green Mode Fairchild Power Switch (FPS™)
April 2013
FSL136HR
Green Mode Fairchild Power Switch (FPS™)
Features
Internal Avalanche-Rugged SenseFET (650 V)
Under 50 mW Standby Power Consumption at
265 V
AC
, No-load Condition with Burst Mode
Precision Fixed Operating Frequency with
Frequency Modulation for Attenuating EMI
Internal Startup Circuit
Built-in Soft-Start: 20 ms
Pulse-by-Pulse Current Limiting
Various Protections: Over-Voltage Protection
(OVP), Overload Protection (OLP), Output-Short
Protection (OSP), Abnormal Over-Current
Protection (AOCP), Internal Thermal Shutdown
Function with Hysteresis (TSD)
Auto-Restart Mode
Under-Voltage Lockout (UVLO)
Low Operating Current: 1.8 mA
Adjustable Peak Current Limit
Description
The FSL136HR integrated Pulse Width Modulator
(PWM) and SenseFET is specifically designed for high-
performance offline Switch-Mode Power Supplies
(SMPS) with minimal external components. FSL136HR
includes integrated high-voltage power switching
regulators that combine an avalanche-rugged
SenseFET with a current-mode PWM control block.
The integrated PWM controller includes: Under-Voltage
Lockout (UVLO) protection, Leading-Edge Blanking
(LEB), a frequency generator for EMI attenuation, an
optimized gate turn-on/turn-off driver, Thermal
Shutdown (TSD) protection, and temperature-
compensated precision current sources for loop
compensation and fault protection circuitry. The
FSL136HR offers good soft-start performance. When
compared to a discrete MOSFET and controller or RCC
switching converter solution, the FSL136HR reduces
total component count, design size, and weight; while
increasing efficiency, productivity, and system reliability.
This device provides a basic platform that is well suited
for the design of cost-effective flyback converters.
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51mcu
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