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Thread: Design challenge - switching regulator
www.piclist.com/techref/power/priswitch.htm?key=switching
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face BY : M. Adam Davis email (remove spam text)



That's a tough call.  I'd say stick with your current thought, and if you
absolutely need it to start at lower voltages add a boost regulator to
provide the starting voltage, set up so it is shut down when the main
regulator is going.

That input voltage range really is huge though, and the requirement of
operating with inputs above and below your output limits you as well.
Unless you change your requirements I doubt you'll get any off the
shelf/easily implemented/cheap solutions.

A new triangle, pehaps?
Wide input range, high current output (greater than .1A), and low cost.
Pick any two...

-Adam

Russell McMahon wrote:
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