High output voltage at Transformer secondary

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Hi,


I,m i have designed a 3 phase power supply using TOP269E stackfet configuration,


my spec for this is

vin_min = 180v

Vin_max=460v

Vout1=5v

Iout1= 10A

Vout2= 6v

Iout2= 1A


here my issue is i'm not getting 6v output from transformer instead im getting "15v",please the transformer design once let me know if any changes required


Thank You!!!


I didn't find the right solution from the Internet.


References
ac-dc.power.com/forum/high-power-design/2017/high-output-voltage-transformer-secondary/

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