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Boost-buck for pump

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andrew_c:
Morning all,

Would anyone happen to know of a suitable series of boost-buck converters which will take in 22-34VDC and output 24V @ 2.5A. Digi-Key is not being my friend on this one.

Best regards,
Andy Cooke

Zero999:
Beware, buck-boost can refer to two different topologies.

Inverting: the output polarity is opposite to the input. It requires two switches, normally a transistor and a diode.

Non-inverting: essentially a buck converter, combined with a boost converter, but sharing the same inductor. It requires four switches: normally two transistors and two diodes.

https://en.wikipedia.org/wiki/Buck%E2%80%93boost_converter

Which one do you want?

andrew_c:
Non-inverting would be preferred.

Thanks, Andy

T3sl4co1l:
Then SEPIC or "flying inductor" it is. :) Should be modules roundabout that level, not sure about Chinese ready made PCBs, think LT/AD makes a few chips if you want total integration, else any regulator or controller plus support components will do.

Tim

NiHaoMike:
Check if the pump will run at 22V, which it most likely will. Then all you need is a buck converter.

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