Author Topic: Any AC input dual output +/-15 Vdc 100 W power supplies to choose  (Read 1014 times)

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Offline mike bubaTopic starter

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Hi,
I am looking for a AC/DC dual output metal enclosure power supply:
  • Vin: 230 Vac
  • Vout1: +15 Vdc
  • Vout2: -15 Vdc
  • Power: > 90 W
to supply Semikron IGBT drivers.
Apart from Meanwell (e.g. QP-200F), are there any other products available to compare or choose? Tracopower TXL series is end of life and TXLN series is still not available. Power-One, now Bel Power Solutions, is also out of stock.
 

Offline NiHaoMike

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Re: Any AC input dual output +/-15 Vdc 100 W power supplies to choose
« Reply #1 on: August 21, 2021, 12:54:26 am »
Have you considered two 15V modules in series?
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Offline mike bubaTopic starter

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Re: Any AC input dual output +/-15 Vdc 100 W power supplies to choose
« Reply #2 on: August 21, 2021, 07:02:42 am »
Have you considered two 15V modules in series?

I also need -15 Vdc. Not sure I understand.
 

Offline mansaxel

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Re: Any AC input dual output +/-15 Vdc 100 W power supplies to choose
« Reply #3 on: August 21, 2021, 07:16:57 am »
Have you considered two 15V modules in series?

I also need -15 Vdc. Not sure I understand.

If you take two single voltage 15V modules, and connect +Ve from module 1 to "+15V" on your consumer, then join -Ve from that module to +Ve from module 2 and "GND" on the consumer, and finish by connecting -Ve from module 2 to "-15V" on the consumer, you've built a dual voltage supply.

The important assumption here is that the output on the modules must be floating w.r.t ground/chassis/mains PE. Most Mean Well supplies  for instance solve this.

There's an UK seller offering new 15V Mean Wells here -- they've only got a capacitor between -Ve and GND which likely make them OK for your application, as long as you're not floating too many Volts away from GND.

Then of course, I'm no EE and my guess is as good as yours. But it's a start.


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