Need Help Finding IC

[Wolfman29]

Hey everyone -

On a quest to make an open-source, adaptable and adjustable power supply that is better than the common Mastech power supply, I have been working on a circuit. However, I can't seem to find the right IC for the job.

The IC I need to find is one that can buck down from 30V, 6A to 0-24V 7.5A. Does anyone have any suggestions? I have been looking through the datasheets of a bunch of different companies like Linear, TI, National, and ONSemi, but I can't seem to find anything that would work and work well. I prefer Linear products because then I can simulate the circuit with LTSpice (my favorite program ^_^ ), but if any of you guys know of any adjustable ICs that could buck that power, that would be fantastic. I would be one step closer to developing this PSU

 

[rhd]

My initial comment is that part of the range you're hoping for:
- 30V, 5A bucked to 0-24V,7.5A
isn't going to be possible

The 24V, 7.5A portion would imply a buck converter efficiency of 120%!

 

[Wolfman29]

Yeah... typo on my part. It should be 30V 6A

Thanks for catching that!

 

[Jacob32123]

Yeah... typo on my part. It should be 30V 6A

Thanks for catching that!

That's an efficiency of 100%. Seems unlikely to me.

 

[Wolfman29]

Yes it is - I just require that is is capable of outputting whatever my input parameters would give at 100% efficiency. I'm probably going to end up giving it about a 10-20% efficiency leeway, but I just need to make sure that it is able to output that much power. Efficiency is a matter of design, not part, usually.