220V AC changed into the 600V DC switch power supply circuit

Published:2011/6/21 20:30:00 Author:TaoXi | Keyword: 220V, AC, 600V, DC, switch, power supply | From:SeekIC

The high voltage boost power circuit: the 220V AC changed into the 600V DC switch power supply circuit. Specifications: Input voltage=220Vac±10%50/60Hz Output voltage=0~600Vdc 0.25A Switch frequency: 70~100kHz Design guidelines: In the DCM mode, the output power is 200W The degradation situation continuous current mode calculation formula of the input RMS current is: If the best operating duty ratio is set to D=0.35, the calculation formula of the input peak current is: So the voltage detection voltage level limit of the FAN7554 is 1.5V.



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