Which 12V DC SMPS for amps? - Page 2 - diyAudio
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Class D Switching Power Amplifiers and Power D/A conversion

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Old 10th February 2008, 08:52 PM   #11
tfboy is offline tfboy  United Kingdom
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Quote:
Originally posted by TheMG
Plus, you'd have to be running the modules at their full +/- 65V for the UCD400 and +/- 45V for the UCD180, which are the voltages Hypex used to obtain their output power ratings. Which brings me to another point, you'll want to have two power supplies if you wish to get the most out of the modules, for the reason stated above (diff voltages).
Fair point. I forgot the UCD400 had different power requirements.

Quote:
Originally posted by jackinnj
Why not just get the appropriate chip from Texas Instruments? they have the H-Bridge "in situ" so you don't have to waste time building a switch mode power supply.
link? chip code? I'd need something simple. I don't have the facility to trace PCBs so either buy something like the CPS or buy something that I can assemble, but with the PCB and all the parts already available.
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Old 9th March 2008, 08:48 AM   #12
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why you not put some inductors to this curcit ??
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Old 24th April 2008, 08:51 PM   #13
Z1 is offline Z1  Italy
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Actually in my car i have four ucd180 powered by a coldamp cps80 and they sounds great! The smps is rock solid and well constructed so buy it without fear.

P.S. the schematic on ESP is made with ssanmor (coldamp)

Fabio
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Old 29th April 2008, 12:43 AM   #14
RX5 is offline RX5  Philippines
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Quote:
Originally posted by kck87
original schema

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modify schema

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pcb 1000W

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1000W pcb proteus files

http://rapidshare.com/files/90637460/1000W.LYT.html

the modded version... core is from PC PS, right? It can STILL be modified, add a "feedback" circuit to limit output voltage(not efficient way??) -OR- use the "12v windings" on the core...

EDIT: OOpppsss!! I see it has Output adjust..


on a sidenote, got me wondering, w/c is MORE efficient way, USE the "5v windings/thicker AWG/more current" but will need feedback to control output ---OR--- just use the "12v windings"/lesser thickness compared to 5v winding and do away with the feddback.... output should be in the +/-45V...
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RoCk On!!! I love my diy UcD!!
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Old 25th June 2008, 03:25 PM   #15
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Hello,

do ypu have any news about your Project with the 12 V DC/DC Power Supply ?

Best regards

Dominic
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Old 9th August 2011, 10:31 AM   #16
tfboy is offline tfboy  United Kingdom
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I completely forgot about this thread! :O

Sorry Dominic, I don't. But I suppose you've moved on since
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Old 9th August 2011, 10:57 AM   #17
ssanmor is offline ssanmor  Spain
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Nice to see that ESP Project 89 design has still some attention. It was published by me almos 10 years ago, and Coldamp CPS80 is a greatly improved and more powerful version of that basic design.
CPS80 is able to around 1KW with no problem provided that your wiring and DC source can withstand the power. If you need special voltages (although the CPS80 is regulated and adjustable from +/-39 to +/-62V approx), please ask.
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Old 9th August 2011, 12:25 PM   #18
tfboy is offline tfboy  United Kingdom
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Hola ssanmor. Thanks for confirming CPS80 can produce that power. The car audio project is on standby right now, but at least it's reassuring to know it's a fine product (and it should be at that price!)

Gracias!
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Old 9th August 2011, 12:33 PM   #19
ssanmor is offline ssanmor  Spain
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Just ask us if you need more information or help.
The product has a different price for OEMs and gets considerably lower for mid quantities. For example, it gets to approx 130 euro for 100pcs or 155 euro for 10 pcs. We think it is reasonably priced.
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Old 9th August 2011, 12:38 PM   #20
tfboy is offline tfboy  United Kingdom
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Cool thanks. I'd only need one or two, so can hardly qualify for OEM large quantity discounts. Unless you do a low cost sample

I'll probably get one if I ever get round to finishing my car audio project. Good to know you're here to answer questions.
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