Replacement triple output power supply

Power Power Supplies (off-board)
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1

I have a bad “LPT23” power supply in a device Im working on. DigiKey says the power supply is discontinued and “NPT43M” is a suitable replacement but looking at the datasheets for both power supplies it seems the DC output headers have different pinouts. Also the LPT23 is a 12v, 5v, and -12v power supply while the NPT43M outputs 15v, -15v, and 5v.

Is there a drop in replacement for the Artesyn LPT23 with the same output voltage pinouts or am I just going to have to find something close with the same output voltages and current ratings and swap some pins around in the wiring harness of my device?

Thanks!

2

Hello Deezdrama,
Thank you for posting on our forum and welcome to our community.
I am sorry to inform you the manufacture no longer supports PN LPT23.
I can offer a compare chart between the listed cross.

3

I think I found a plug and play replacement.
The Cincon cfm40t-02

Same output voltages and current ratings, same ripple current, even the same exact pinout.
Only negative is a smaller footprint so the mounting standoffs wont match but hopefully this will do the job, thanks.

4

I have submitted an error report regarding the NPT43-M part as the output voltages are different. It looks like the NPT42-M should have been the correct suggestion.

5

I noticed that too, what do you think about the cincon cfm40t-02 ?

Its the only thing i found with same voltages,ratings,and same exact pinout.

Only bad thing is its footprint and mounting holes are smaller so will have to find a way to mount it but looks like it is plug and play otherwise

6

That depends on if you need more than 300mA on the -12V rail.

The LPT3 has a current rating of 500mA on the -12V.

1 Like
7

Yeah, Its an old Extron matrix switcher. They dont publicly share specs on there equipment, not their old stuff anyway. It has 4 inputs and 2 outputs. I just plan to use 3 inputs and 1 output so fingers crossed that the cincon will handle it.

Thanks