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Hello TI expert,
I wanted to design a high power buck converter with the following specifications.
Vin(min) = 48V
Vin(typical) = 58V
Vin(max) = 70V
Vout(constant) = 12V
Iout(peak) = 80A
Iout(continous) = 35-40amps
Power = 480W
As far as the first iteration is concerned i am not so specific about the efficiency, but would like to keep it at a minimum of 60%.
Could i have some guidance on this and if the decision of going with LM5146 is a good one or not for a synchronous non inverting buck converter. I would also like to know more about how I can select the parameters of the inductor being used and if i can follow the reference diagram given in the datasheet.
Any guidance would be helpful and appreciated.
Thank you.
Hey Timothy, thanks for the reply. Since i already have LM5146 at my disposal going for another controller ic would be difficult. Then suppose that i am willing to compromise on the output current. (I am assuming that the 20A/phase DC, 40A/phase peak is by using LM5146).
The following is the circuit that ive found on TI Power Designer.
Can i use the circuit as it is and be good to go with assuming a vin max of 75V, output voltage of 12v(fixed) and output current is 15-20amps ?
