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Lead acid battery charger using sepic converter with MPPT

Dear all,

For my Lead acid battery charger, I want to modify the TMDSSOLARPEXPKIT including sepic converter with mppt for solar cell input.

The specification of charger is as following.

Input voltage : 5 ~ 35V

Input current : 30Amax

Output voltage : 10 ~ 16VDCmax

Output current : 30Amax

Battery : 12V / 300Ah

Switching frequency : 50Khz ~ 100KHz (Not fixed yet)

Would you please suggest proper FET and inductor to me for my application?