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~150V DC Regulator?

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Berserk87

New Member
is there such thing as a regulator that can handle around 150V DC?

preferably a buck converter, not something that just turns the extra energy into heat.

ive been searching, but all the ones im finding are 80V input max.
 

RCinFLA

Well-Known Member
All the cheap A.C. inverters have a high frequency switching boost transformer power supply that creates about 155 vdc output. This is followed by a MOSFET H-bridge that creates the modified sinewave output to A.C. socket.

If your are looking for 150 vdc from A.C. mains I am sure there is switching power supply out there somewhere.
 
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Berserk87

New Member
Any links or suggestions? The only bucks I've "designed" are using national semiconductors web bench, and they don't seem to have a solution for what I need.
 

Speakerguy

Active Member
What is your load? A DC source, or does transient response matter?

You can totally made a DC/DC converter without some pre-fabbed chip or module meant for that purpose. The dsPICs are used a lot for power converter 'brains'.
 

bountyhunter

Well-Known Member
Any links or suggestions? The only bucks I've "designed" are using national semiconductors web bench, and they don't seem to have a solution for what I need.
As loathe as I am to throw NS business, you could probably use a 400V PNP or P-FET as the power pass device bucking the main DC input, and use a switcher IC to drive an NPN with it's emitter grounded whose collector pulls down on the P buck transistor. There are probably a bunch of generic switcher controllers you could use, you will have to create a lower voltage rail like 20V to run the IC maybe with a power resistor and zener down from 150V. That bias voltage rail can be poorly regulated, doesn't matter.
 

RCinFLA

Well-Known Member
Regular AC switching power supply will work from 150 vdc.

Just don't get a power factor corrected power supply.

If you want you can bypass the rectifier bridge in the switching power supply.
 
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