First post, by ChrisK
shortly I had made a post about a switching regulator module I once made for my PCI Riva TNT card to replace the very hot linear one.
You can find it here:
Re: Bought these (retro) hardware today
Main intention was to reduce the cards temperature due to heating by the regulator and with that the total power consumption of the system.
I have written down some before and after numbers somewhere but don't have them at hand now. IIRC power consumption dropped about 2 or 3 Watts with this mod.
As some people declared interest in this topic I digged out the design files for that little PCB holding a switching regulator module made by Murata.
As I didn't know the correct current draw of the card this module was my best bet in terms of power output (up to 6 Amps compared to the 7 Amps from the old linear regulator, datasheet values) and availability. As far as I can see it should still be available at e.g. Digikey or Mouser (global electronics shortages taken aside).
The module was made to fit exactly my own VGA card but should be usable on other cards using a linear regulator with the same pinout, too.
You can find the files appended to this post. Feel free to use at will.
(I'm sorry I can't make any modifications if someone would like to request that, on the one hand out of time shortage and on the other hand because I would have to set up a design system again adding more time necessary.)
The PCB was made with KiCAD, so should be pretty straight forward, and I hope everything necessary is included.
If you like it leave a little "Thanks" 😀
I'm curious about the discussion and new ideas that may follow here 😉
P.S. (1): It is still a good idea to use a fan on the (most) passively cooled graphics chip(s) since only the heat by the regulator itself is reduced.
P.S. (2): I may have one or two bare PCBs left over if there's someone nearby who can do the solderjob on his own. I could do the soldering, too, but would need the regulator module organized because it's a bit difficult for me to order stuff atm.