Building a DC to DC voltage regulator

AI Thread Summary
To regulate 12 volts DC from a car battery down to 1.24 volts DC while drawing 12-15 amps, a buck converter is recommended. The discussion highlights the need for adjustable voltage output and suggests using a 20A buck regulator chip from National Semiconductor. Participants are encouraged to share additional component recommendations and circuit designs. The focus remains on achieving efficient voltage regulation for high current applications. Assistance is sought for practical implementation and component selection.
dancingbear
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Could anybody please assist me.

I need to regulate 12 volts dc from a car battery down to 1.24 volts dc yet I still need to be able to draw 12 - 15 amps. Ideally I would like to be able to adjust the voltage. Does anybody have any ideas how I will be able to achieve this & if so, what components will I need?

Thanks
 
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dancingbear said:
Could anybody please assist me.

I need to regulate 12 volts dc from a car battery down to 1.24 volts dc yet I still need to be able to draw 12 - 15 amps. Ideally I would like to be able to adjust the voltage. Does anybody have any ideas how I will be able to achieve this & if so, what components will I need?

Thanks

Here's a 20A buck regulator chip and application info from National Semiconductor:

http://www.national.com/mpf/LM/LM2746.html
 
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