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lcamtuf's avatar

It is probably worth noting that in practical buck and boost converters, the diodes are often replaced with synchronously operated MOSFET switches. This causes no functional difference, but avoids the inherent p-n voltage drop.

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profighost's avatar

As an expercience desinger on power electronics I know buck converters can be really tricky with several strings aatached, so I recommend two things:

1. rated power shall meet used power, and input & output voltage shall not be to far apart to reduce efficieny losses (heat -> cooler)

2. don't start to build one on your own on opamps, unless you're an experienced electronics engineer. get a preconfigured designed one. nearly every semicondutor company provides those.

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