Battery Charger TOP259YN 24V 5Amp

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Hi i use TOP259YN IC my problem is i get constant Voltage at no load condition ,But When i Connect load of 6watt at that time voltage will be down so current is not get from circuit .
please guide me.

Hi,

Can you share your, Schematic, PIExpert/PIxls design document, Transformer construction document and PCB layout etc.

Regards,
PI-NANO