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Why do DC-DC buck-converters not start at 0 volts? Answered

I have been looking into DC-DC converters to build a variable power supply but I've haven't been able to find one which starts at 0 volts. Most of them seem to start at 5-10 volts with the lowest I've seen starting at 0.8 volts. Is there any reason for this?

Thanks,

Tags:dcdc converter

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steveastrouk
steveastrouk

4 years ago

Think about it: At zero volts, what energy is available ?

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Quadrifoglio
Quadrifoglio

Answer 4 years ago

+1 At 0 volts, you have turned it off.