Plz help to make Dc to dc converter

[smhn72@gmail.com]

I want to make a dc to dc converter whic may convert my 18v 2ah dc to 3v 2ah dc
how it is possible
please guied

 

[sri5496]

using a buck converter it is possible for designing the buck converter.select a desired frequency at which the efficiency is high.check out about designing the converter here https://www.daycounter.com/LabBook/BuckConverter/Buck-Converter-Equations.phtml

 

[manishanand14]

Hey smhn72@gmail.com !

You please refer MC34063 datasheet.the entire step by step procedure is given.For better understanding view video on DC-DC converter design using MC34063 by Dave Jones of EEV blog
https://www.youtube.com/watch?v=qGp82xhybs4