Part Number
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AN728 |
Manufacturer
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Vishay Siliconix |
Description
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Designing A Flyback Converter |
Published
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Mar 26, 2005 |
Detailed Description
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AN728
Vishay Siliconix
Designing A Flyback Converter with Si9113 for Feeding the TE from U-Interface In ISDN
Nitin Kalj...
|
Datasheet
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AN728
|
Overview
AN728
Vishay Siliconix
Designing A Flyback Converter with Si9113 for Feeding the TE from U-Interface In ISDN
Nitin Kalje and Tony Lai
INTRODUCTION
The efficiency of the converter powering the NT is extremely important, even at power levels of a few milliwatts.
To achieve 60% efficiency with an 80-mW output, the allowable power loss in the converter is less than 54 mW.
The components of these losses include the dc and switching losses in the semiconductors, the transformer, quiescent current overhead in the control chip, current and voltage sense networks, power losses from the ripple current through the input and output capacitor ESR, resistive losses in the PCB traces, and any external co...
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