Hello Team,
I have got following requirement for LM5022 based flyback design. Kindly help to verify the turns ratio and primary inductance required.
Vin = 15VDC to 280VDC
Vout = 5V @ 4A
Fs= 100kHz
Dmax = 70%
efficiency= 70-75%
Ripple current, Krf =40% (In CCM mode).
Using generic equation, Lpri = (Vin(min) * Dmax)^2 / (2*Pin*Krf* Fs) = ~ 50-70uH
Turns ratio Npri: Nsec = 6:1
Please help to verify this data.
Thank you.
Regards,
Mahendra Patel, TI Pune.