Regulated power supply Vin=24v Vout=5v to 35v

virocan

Other Parts Discussed in Thread: LM25118, LM5175

Hi guys,

I'm intertesed in use a power regulator that with an input of 24v and using a buffer to control feedback can have an vout of 5v to 35v.

My first option is a cheap option that was using a MC34063 to boost 24v to 36v and then another MC34063 to step-down that voltage, but I'm not sure if it is the best.

Another option is to use the LM25118 to do that but I have to consider the compensation network

wich option do you think that will be better.

over 7 years ago

0 Youhao Xi over 7 years ago

TI__Guru* 78400 points

Between your two options, I think the LM25118 is a better choice because you only need one inductor.

0 virocan over 7 years ago in reply to Youhao Xi

Prodigy 50 points

Can you teel me other choice to do that? or other way to control regulators, wich is the best option to do that I 'm doing it with a DAc and a buffer but I know that I can do it with a digital potentiometer or just a dac

0 Youhao Xi over 7 years ago in reply to virocan

TI__Guru* 78400 points

You need a buck-boost and the LM25118 should be a better choice. We also have LM5175/76 which require 4 external MOSFETs, but they will have higher efficiency.

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Regulated power supply Vin=24v Vout=5v to 35v