FAN103

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Primary-Side-Regulation PWM Controller

General Description

This third-generation Primary Side Regulation (PSR) and highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. The proprietary topology, TURECURRENT™, of FAN103 enables precise CC regulation and simplified circuit for battery charger applications. A low-cost, smaller and lighter charger results as compared to a conventional design or a linear transformer.To minimize standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease PWM frequency under light-load conditions. This green mode assists the power supply in meeting the power conservation requirement. By using the FAN103, a charger can be implemented with few external components and minimized cost.

Product Status/Pricing/Packing

Fairchild 1,000 piece Budgetary Pricing. *
If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
Top mark packaging information for product FAN103 is available. **

Product	Product Status	Eco Status	*Pricing	Package Type	Leads	Packing Method	Package Drawing	**Package Marking Convention	RoHS IPC1752	RoHS/REACH/JIG Certificate of Compliance
FAN103MY	Full Production	Green as of Aug 2008	$0.53	SO-8	8	TAPE REEL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:FAN103 Line 3:MYA
FAN103WMY	Full Production	Green as of Oct 2010	$0.426	SO-8	8	TAPE REEL		Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2:FAN103 Line 3:WMYR

Design Tools

Power Supply WebDesigner - Flyback Design & Simulation - In Minutes at No Expense - If you want to complete an off-line flyback converter design with minimal engineering time and expense, you've found the answer. Simply enter your input and output requirements, click on "Auto-Complete", and Power Supply WebDesigner (PSW) does the rest.Or if you prefer to fine tune parameters to optimize performance as you perform detailed analyses and simulations, all while eliminating the need for a hardware prototype, Power Supply WebDesigner does it all.PSW automatically generates a BOM and lets you confidentially save your design for future reference by you or others on your team. Start saving days-to-weeks of engineering time with PSW, whether you're a power supply expert or not.

Support

Engineering Connections

Podcasts

Introduction to Fairchild's Power Supply WebDesigner, a design tool for Flyback Converter solutions. This online design and simulation tool takes your specifications and provides a complete Primary-Side Regulated (PSR) Flyback converter or Secondary-Side Regulated (SSR) Flyback Converter design whether you are a power supply expert or not.

Introducing Power Supply WebDesigner Design Tool

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Qualification Support

Customer qualification data for the FAN103WMY
Customer qualification data for the FAN103MY

Features

Low Standby Power Under 30mW
High Voltage Startup
Fewest External Component Counts
Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry
Green-Mode Function: Linearly-Decreasing PWM Frequency
Fixed PWM Frequency at 50kHz with Frequency Hopping to Solve EMI Problem
Cable Compensation in CV Mode
Peak-Current-Mode Control in CV Mode
Cycle-by-Cycle Current Limiting
V_DD Over-Voltage Protection with Auto Restart
V_DDUnder-Voltage Lockout (UVLO)
Gate Output Maximum Voltage Clamped at 15V
Fixed Over-Temperature Protection with Auto Restart
Available in the 8-Lead SOP Package

Applications

TBA

Application Notes

AN-9035: Smart Power Module Motion-SPM™ in Mini-DIP User's Guide (1,738 K) Mar 05, 2011
AN-9735: Design Guideline for LED Lamp Control Using Primary- Side Regulated Flyback Converter, FAN103 & FSEZ1317 (487 K) Apr 12, 2011
AN-8033: Design Guideline for Primary Side Regulated (PSR) Flyback Converter Using FAN103 and FSEZ13X7 (756 K) Jan 26, 2012

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Videos

LED Lighting Total Solutions

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