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Fairchild FSL116HR Data Handbook

Summary

The FSL116HR is an advanced integrated Pulse Width Modulator controller designed to create highly efficient Switched-Mode Power Supplies (SMPS) with minimal external components. This essential device features avalanche-rugged SenseFET technology and built-in protections (like UVLO, OVP, and soft-start). The accompanying manual provides comprehensive design guidelines, technical diagrams, and operational details for implementing low-power AC/DC solutions in various applications, including VCR/DVD players, home appliances, and adapters. It is the ideal component solution for electronics engineers needing reliable, high-performance power regulation.

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Page 1 Text Content

116H reen e F airch ild er S itch (F

April 2012

FSL116HR Green Mode Fairchild Power Switch (FPS™) Features Description

 Internal Avalanche-Rugged Sense FET (650V) The FSL116HR integrated Pulse Width Modulator (PWM) and Sense FET is specifically designed for high-

 Under 50m W Standby Power Consumption at

performance offline Switched-Mode Power Supplies

265VAC, No-load Condition with Burst Mode

(SMPS) with minimal external components. FSL116HR  Precision Fixed Operating Frequency with includes integrated high-voltage power switching regulators that combine an avalanche-rugged

Frequency Modulation for Attenuating EMI

Sense FET with a Current-Mode PWM control block.

 Internal Startup Circuit

The integrated PWM controller includes: Under-Voltage

 Built-in Soft-Start: 20ms

Lockout (UVLO) protection, Leading-Edge Blanking  Pulse-by-Pulse Current Limiting (LEB), a frequency generator for EMI attenuation, an optimized gate turn-on / turn-off driver, Thermal

 Various Protections: Over-Voltage Protection

Shutdown (TSD) protection, and temperature-

(OVP), Overload Protection (OLP), Output-Short

compensated precision current sources for loop

Protection (OSP), Abnormal Over-Current

compensation and fault-protection circuitry. The

Protection (AOCP), Internal Thermal Shutdown

FSL116HR offers good soft-start performance. When

Function with Hysteresis (TSD)

compared to a discrete MOSFET and controller or RCC switching converter solution, the FSL116HR reduces

 Auto-Restart Mode

total component count, design size, and weight; while

 Under-Voltage Lockout (UVLO) increasing efficiency, productivity, and system reliability.

This device provides a basic platform that is well suited

 Low Operating Current: 1.8m A

for the design of cost-effective flyback converters.

 Adjustable Peak Current Limit

Maximum Output Power(1)

Applications

230VAC ±15%(2) 85-265VAC

 SMPS for VCR, STB, DVD, & DVCD Players

Open Open

Adapter(3) Adapter(3)

 SMPS for Home Appliance Frame Frame

 Adapter 11W 16W 10W 14W Notes:

Related Resources 1. The junction temperature can limit the maximum

output power.

 AN-4137 — Design Guidelines for Offline Flyback

2. 230VAC or 100/115VAC with doubler.

Converters Using FPS™

3. Typical continuous power in a non-ventilated  AN-4141 — Troubleshooting and Design Tips for enclosed adapter measured at 50°C ambient.

Fairchild Power Switch (FPS™) Flyback Applications  AN-4147 — Design Guidelines for RCD Snubber of Flyback  Fairchild Power Supply Web Designer — Flyback Design & Simulation - In Minutes at No Expense

Ordering Information

Operating

Part Number Top Mark Package Packing Method

Temperature Range

FSL116HR -40 to 105°C FSL116HR 8-Lead, Dual Inline Package (DIP) Rail

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSL116HR • Rev. 1.0.1

Page Summary Contents For Fairchild FSL116HR Data Handbook

Page 1 116H reen e F airch ild er S itch (F April 2012 FSL116HR Green Mode Fairchild Power Switch (FPS™) Features Description  Internal Avalanche-Rugged Sense FET (650V) The FSL116HR integrated Pulse Width ...
Page 2 116H reen e F airch ild er S itch (F Typical Application Diagram Figure 1. Typical Application Internal Block Diagram VSTR ra in VB L/V VCC Good Inte rna VCC VCC andom Frequency OSC ID IFB Gene ra tor...
Page 3 116H reen e F airch ild er S itch (F Pin Configuration Figure 3. Pin Configuration Pin Definitions Pin # Name Description 1 GND Ground. Sense FET source terminal on the primary side and internal contr...
Page 4 116H reen e F airch ild er S itch (F Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended op...
Page 5 116H reen e F airch ild er S itch (F Electrical Characteristics TA = 25°C unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Unit Sense FET Section BVDSS Drain-Source Breakdown Vol...
Page 6 116H reen e F airch ild er S itch (F Electrical Characteristics (Continued) TA = 25°C unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Unit Total Device Section Operating Supply ...
Page 7 116H reen e F airch ild er S itch (F Typical Performance Characteristics These characteristic graphs are normalized at TA=25. Operating Frequency (f OSC) Maximum Duty Cycle (DMAX) Figure 4. Operating ...
Page 8 116H reen e F airch ild er S itch (F Typical Performance Characteristics (Continued) These characteristic graphs are normalized at TA=25. Startup Charging Current (ICH) Peak Current Limit (ILIM) Figur...
Page 9 116H reen e F airch ild er S itch (F Functional Description Startup Feedback Control At startup, an internal high-voltage current source FSL116HR employs Current-Mode control, as shown in supplies the...
Page 10 116H reen e F airch ild er S itch (F Abnormal Over-Current Protection (AOCP) When the secondary rectifier diodes or the transformer pin are shorted, a steep current with extremely high di/dt can flow ...
Page 11 116H reen e F airch ild er S itch (F continues, but the current limit is fixed internally to Output-Short Protection (OSP) minimize flux density in the transformer. The fixed If the output is shorted,...
Page 12 116H reen e F airch ild er S itch (F Physical Dimensions 5.08 MAX 0.33 MIN NOTES: UNLESS OTHERWISE SPECIFIED A) THIS PACKAGE CONFORMS TO JEDEC MS-001 VARIATION BA B) ALL DIMENSIONS ARE IN MILLIMETERS....
Page 13 116H reen e F airch ild er S itch (F © 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FSL116HR • Rev. 1.0.1 13

Manual Details

Brand Fairchild
Pages 13
File Size 937.49 KB
Published May 31, 2026
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Frequently Asked Questions

What is the operating temperature range for the FSL116HR?

The operational temperature range is -40 to 105°C.

How does the device achieve EMI attenuation and protection?

It includes a leading-edge blanking circuit (LEB) and a frequency generator for EMI attenuation, along with multiple protections like OVP, UVLO, TSD, and LOP.

Can I adjust the peak current limit of the SenseFET?

Yes, by diverting 0.4mA from its pin to a parallel combination of an internal 6kΩ resistor and any external resistor (R).

What is the suggested application for this module?

It is suitable for SMPS designs for various devices such as VCRs, STB, DVD readers, and home appliances.