Change +5V line to +30V ATX from PC

[sowiksat]

I have to make power supply +30V from +5V line. I want to use ATX from PC. Do you have any ideas? Thanks.

 

[mvs sarma]

I have to make power supply +30V from +5V line. I want to use ATX from PC. Do you have any ideas? Thanks.

what is the load current on 30V?

 

[sowiksat]

I need aprox. 8A.

 

[IanP]

The efficiency of conversion from 5V to 30V can reach roughly 70-75% what at 8A (30V) output will require ≈70A@5V (350W) and no commercially available ATX (even 500W) can deliver that ..

Rgds,
IanP

 

[pauloynski]

Here you can find some hints https://www.elecfree.com/electronic/boost-up-current-to-8-amps-from-a-lm2575/

 

[mvs sarma]

I need aprox. 8A.

8ampos at 30 volts means 240watts. converted will take nearly 60 amps at 5V
I don't think your concept would be feasible
I have a dobt
is that 8 amps On 5V line?

 

[sowiksat]

Thanks a lot. I'll buy ready device (TDK Lambda RTW series)

 

[R00KIE]

If the voltage comes from an atx power supply why not use the +12V rail instead?

But I think it will still need more current than one +12V rail will give you (due to safety rules that impose a current limit on each rail).