Extend logic board connection on DCDC converter

[PeterFW]

Hello!
For a bit i have been working on some electric doohickey and the time will soon come were it has to be put in a neat box.

I am using a Chinese DCDC converter, it seems to be manufactured by Minghe, sold as Dps-3806.
The MingHe B3603 has been discussed at great lengh here on the forum and both converters (mine and the B3603) seem to use the same logic board.

I have been thinking of extending the connection by 5 to 10cm so i can mount the logic board on the frontpanel and leave the rest tucked inside the enclosure.

All the analog signals that are responsible for the accuracy run through the connectors, now i am thinking, will it be a problem if i add a few cm of wire in between?
My plan is to simply etch two adapter boards and use a boxed headers, plugs and cable to extend it.

Greetings,
Peter

[Alex Trofimov]

Hi!

I see a few possible issues with making a cable longer.
1. Noise pick up. You should investigate how much are the signals succeptible to noise.
2. Signal reflections. Shouldn't really be the case for a PSU (I guess it works under 1MHz) and 5 to 10 cm cable.
3. Signal delay. For this length it is about under 1ns. Shouldn't be an issue, but it worth considering.

If you plan to use the device by youself, and safety won't be compromised if it fails a bit, then burger all this, just test it and if it works, then Bob's your uncle. :-)

[cowana]

Depending exactly which of the lines you're extending, the added inductance could cause issues if it's a high frequency signal.