AC_DC Switch Mode Power Supply Design Guide.pdf

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AC/DC Switch Mode Power Supply
Design Guide
www.fairchildsemi.com
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AC/DC Switch Mode Power Supply Design Guide
Table Of Contents
Product Information
Total Solutions.........................................................................................................................................3
Fairchild Power Switch (FPS™) ...............................................................................................................4-5
Pulse Width Modulator (PWM) Controllers .................................................................................................6
Power Factor Correction (PFC) Controllers..................................................................................................7
Optocoupler Solutions .............................................................................................................................8
Voltage References and Shunt Regulators ...................................................................................................9
High Voltage Switching Technologies.......................................................................................................10
Switch Mode Power Supply IGBTs...........................................................................................................10
High-Voltage MOSFETs ..........................................................................................................................11
Additional Discrete Components .............................................................................................................12
Design Examples
Examples of Typical Application Circuits .............................................................................................13-22
1W Power Supply with less than 100mW Standby Power using FSD210 ..........................................13
Dual Negative Output Non-Isolated Flyback using FSD200...............................................................14
10W Single Output Isolated Flyback using FSDM0265RN and Zener Diode .....................................15
10W Multiple Output Isolated Flyback using FSD210 with Primary Side Regulation...........................16
2.5W Single Output Isolated Flyback using FSD200 with KA431 Reference......................................17
180W-200W Quasi-Resonant Flyback with Input Power Factor Correction using KA5Q1265RF,
FAN7527B, and FQP13N50C ....................................................................................................18-19
16W Multiple Output Isolated Flyback Converter using FSDM0265RN .............................................20
40W Isolated Flyback Power Supply using FSDM07652R ................................................................21
24W Flyback Converter using 1500V IGBT and FAN7554 ..............................................................22
Design Ideas
250W to 450W Desktop PC Forward Switch Mode Power Supply.......................................................23
500W Telecom/Server Double Switch Forward Switch Mode Power Supply..........................................24
500W Telecom/Server ZVS Phase-Shift Full Bridge Switch Mode Power Supply .....................................25
Application Note Highlights
Design Guidelines for Off-Line Flyback Converters using Fairchild Power Switch (FPS) – AN-4137 ............26-27
Power Factor Correction (PFC) Basics – AN-42047...................................................................................28
Choosing Power Switching Devices for SMPS Designs – AN-7010........................................................29-30
Global Power Resources™
Design Support .....................................................................................................................................31
www.fairchildsemi.com/acdc
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AC/DC Switch Mode Power Supply Design Guide
Total Solutions
Fairchild is the only semiconductor supplier that provides a complete portfolio for AC/DC switch mode power supplies.
Whether your design is 1W or 1200W, Fairchild's solutions help achieve increased efficiency, reduce stand-by power,
and support the industry's 1W initiatives. These solutions include: SuperFET™ technology that achieves world-class
R DS(ON) and provides higher power density, reducing heat sink size, Green Fairchild Power Switch (FPS) that offers
state-of-the-art stand-by power supporting the industry's initiatives targeting less than 1W, and Power Factor Correction
ICs that decrease cost and increase system efficiency.
SMPS IGBTs
High Voltage MOSFETs
• Increase output power
• Reduce system cost
• Stealth™ Diode Co-Pack enhances
recovery time
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www.fairchildsemi.com/acdc
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