Datasheet Details
Part number:
AN728
Manufacturer:
Vishay ↗ Siliconix
File Size:
91.57 KB
Description:
Designing A Flyback Converter
Features
* include: D programmable start/stop D less than 5-mA supply current in UVLO mode D internal start-up circuit, programmable soft-start, and power_good output. The following sections discuss in detail design considerations for creating an efficient 800-mW flyback converter with the Si9113. Refer to the
AN728, Designing A Flyback Converter
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 ov
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