Looking for Custom SMPS designer

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Potato Cakes

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Hello, everyone,

I'm looking for someone experienced in designing SMPS's to provide a schematic for a simple yet reliable/robust circuit to be used in audio applications. It is essentially two power supplies that will be on one PCB, one that is +48V/1A (approximate current) and one that is +36V/500mA (also approximate current). Each voltage has to have a separate V- reference, hence two separate supplies.

Normally I would figure this out on my own and ask questions along the way, but a potential client is wanting to purchase a prototype of mine and the time frame for building one is about one month. I have been using separate off the self PSUs but eventually I was going to need a single board PSU before I could release a commercial product if there was enough interest.

Ideally this would be taking two existing layouts for the different voltages and combining them. But since I do not have any layouts nor do I know enough about SMPS design to understand the various schematics found on the interwebs combined with the time factor I requiring myself to seek assistance. And this has to be solid without the need for testing or tweaking, so that also eliminates me from being the guy that designs the circuit.

I ultimately just need a schematic and a BOM. I have a local PCB layout guy that I use, but if you do already reliable layouts that can be combined as mentioned above then that would be helpful.

I do not know what this service would cost, so that would need to sorted upfront. Please email me at paul(at)scodovasound.com if you are experienced with SMPS design and if this would be of interest.

Thanks!

Paul
 

ruffrecords

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Potato Cakes said:
I ultimately just need a schematic and a BOM. I have a local PCB layout guy that I use, but if you do already reliable layouts that can be combined as mentioned above then that would be helpful.
I think you are likely to require the designer to also create the PCB because SMPS design is as much about the layout as it is about the schematic. I would be wary of anyone who just offers you a schematic.

Cheers

Ian
 

john12ax7

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SMPS is a bit of a specialized field,  you might have some trouble finding someone qualified to do a one off for a reasonable price.

I would suggest getting some off the shelf PCB mount supplies.  Most gear manufacturers do not design their own SMPS.
 

jacomart

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Maybe my post is a bit silly but ... have you thought about using LTpowerCAD + LTspice and doing the job yourself?
(or TI webench power designer as well)

Cheers
JM
 
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Potato Cakes

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I did look at those and I'll have to dig into it more. I did manage to find two SMPSs from CUI that were within the dimensions I wanted and with sufficient current ratings. But long term I feel I'm going to have to be able to do this myself. I did not know about the TI program until a couple of days ago.

Thanks!

Paul
 

labak

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Apr 15, 2008
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Putain Cong - France
Maybe you should have a look at Meanwell Pcb blocks and build yours, with DC-DC step-up....I use them them with more filtering around for my audio designs...
 
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