how to get +5v and -5v dual power supply using single 24v and ground ( 24v smps)

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how to get +5v and -5v dual power supply using single 24v and ground ( 24v smps)
 

Does the smps have an adjustable output voltage? (24V could be very high for 5V, unless your smps can output 5V.)

An easy way of generating a negative voltage is to use a (cheap) charge pump, like the 7660, but this device only outputs the voltage that goes in, e.g. +5 > -5, etc.

Or you could use a buck converter and a buck-boost to generate +5 and -5, but you'd need to follow them with linear regulators and use about +8 and -8V outputs, or +6, -6V and LDOs. That seems like a lot of ICs, presumably there's a better way of doing it.

Or, I'd browse a few manufacturer's smps and voltage regulator product filters, because I suspect they make +- dual output ICs.
 

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Last edited:

Hi,

AM1D-2405D.

There are a lot of similar types from other manufacturers

Klaus
 

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