Reference Designs
Universal Input to 12V@500mA PSR Isolated Flyback with Integrated 700V Switch Reference Design
Texas Instruments
A quasi-resonant primary-side regulated isolated Flyback is used to provide 12V @ 500mA from universal input voltage (90Vac to 265Vac). The converter does not employ any optocoupler and regulates the output voltage by sensing the auxiliary winding on primary side. A peak input voltage detector is used to sense input AC voltage: delivering 1/100 AC RMS equivalent voltage: with a +/-5% precision.
Features
- Simple isolated PSR Flyback converter with integrated 700V FETCompact solution (L" shaped PCB) supplies 6W with almost flat efficiency (70%...83%) from 50mA to 500mA loadOpto-less topology increases the reliability of the power supplyGood output voltage regulation versus load: +/-5% in the whole temperature range"
Applications
- Lab & field Instrumentation
- Power analyzer
- Parametric measurement unit (PMU)
- Flat panel display (FPD) shorting bar pattern generator
End Equipment Reference Diagrams
Application Area
End Equipment
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