Selecting inductor for synchronous buck

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Hi
I want to design the synchronous buck

Vin=14 volts to 35 volts
Vout=1 volts to 12 volts
Iout-max=50 ampere
Frequency=100 khz

I want to select the output inductor capable of passing through 50 amperes with the inductance about 1.5 uH.
Please help me about the core material and shape of this inductor and see all the specifications for this inductor.

Regards
 

What is the efficiency of your converter, assuming ideal magnetic elements ? Particularly, the power lost in your semiconductors, in the worst case scenario (12 Vout, 50 A) ?
 

for 50 ampere its best to do paralleled sync bucks.
The attached tells of this kind of thing..
 

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  • Paralleled sharing SMPS's.doc
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  • Low Voltage high current SMPS.doc
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