Source for 300-400 VDC, 1A power supply module, 48VDC input

[daqq]

Hi guys,

for a project I need a module or a block that can supply a (preferably isolated) voltage (adjustable (preferably electronically) within the range of 300 to 400 VDC) at 1 Amp. The input should be 48VDC. Do you know of such a device? I've checked with VICOR and TRACO and the closest they've got is a MASSIVE (2kW+) overkill or full custom design.

Thank you,

David

[mikeselectricstuff]

Hi guys,

for a project I need a module or a block that can supply a (preferably isolated) voltage (adjustable (preferably electronically) within the range of 300 to 400 VDC) at 1 Amp. The input should be 48VDC. Do you know of such a device? I've checked with VICOR and TRACO and the closest they've got is a MASSIVE (2kW+) overkill or full custom design.

Thank you,

David

Using multiple isolated converters with outputs in series might be an option.

[calexanian]

I was looking to do something like this. I ended up just building my own isolated switching supply. It was easier to scrounge up parts than find something ready made.

[daqq]

Thanks for the tip Mike, I'll look into it.

[Strada916]

Two transforms primary to mains. Secondary to secondary.   Primary 240vac rectified and filtered you will have around 300 to 400vdc. And isolated.

[Strada916]

Sorry did not see the input bit.

[SeanB]

Look at appnotes for most SMPS IC's and you will find in there the telecoms apps where the input is 48VDC, and then wind a transformer to give the 400V output and use either controlled attenuation on the feedback or an external linear regulator to give the variable voltage.