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I have a supply that outputs either 20v or 23v, I need to step that up so it is always a fixed 24v no matter what. How can I make sure it is always a fixed 24v?

Edit: This is for a coin hopper. It needs 24V with '2A start falling to 850ma when running'. The electronics feeding it only give 20V for a dollar and 23V for $5, which makes the coins come out very slow (I am not sure current, will have to check). When I hook the hopper up directly to a 24v power supply it runs at full speed, so I am hoping if I can always make sure it has a full 24v when active it will give coins faster. Run time is quick: seconds at max (I think 20 coins are given in 4 seconds)..

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    \$\begingroup\$ There is. But that's likely not what you wanted to ask. Can you edit and improve your question what kind of answer you expect? \$\endgroup\$
    – Justme
    Commented Dec 28, 2023 at 16:04
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    \$\begingroup\$ Also, how much current does your application need from the 24 V supply? \$\endgroup\$
    – Chester Gillon
    Commented Dec 28, 2023 at 16:12
  • \$\begingroup\$ And what is the load that requires "24 V no matter what"? Most 24 V systems such as found in commercial vehicles or industrial automation would work quite happily at 23 V. \$\endgroup\$
    – Transistor
    Commented Dec 28, 2023 at 16:42

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What you are looking for is called a boost converter.

There are a large variety of pre-built power supplies, DC-DC converters, ICs, etc. that can be used to accomplish this.

If you just want to buy something that does the job for you, DC-DC boost converters are a solution: Examples

If you want to add a boost converter to your own PCB, you can easily build your own using a boost controller IC. The datasheets for these will show you what external components you need and how to calculate them. Examples

You can also take advantage of online tools such as Texas Instrument's Web-Bench Tool, which will help you design whatever you need in this regard. Specifically, look at the POWERSTAGE-DESIGNER tool within Web-Bench.

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