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Design >> High-Power Design >> Output voltage from ERROR AMPLIFIER (BUCK converter)
https://designers-guide.org/forum/YaBB.pl?num=1415892605

Message started by AMSA on Nov 13^th, 2014, 7:30am

Title: Output voltage from ERROR AMPLIFIER (BUCK converter)
Post by AMSA on Nov 13^th, 2014, 7:30am

Hi guys,

I'd like to know if someone can help me out here.

I am designing a buck converter. Right now I am on the control side. In the figure bellow you can see the error voltage behavior.

http://s9.postimg.org/d34lpfgnz/111111.png

This error voltage is subject to a step in the load.

What I want to know is if it is possible to shrink or to reduce the dynamic range of this error volta. I don't know if I can call it dynamic range. What I mean by dynamic range is the total variation of the voltage.

The reason I want his is because this voltage will be driving a comparator and the comparator can't support such high voltage at the input. It goes to triode region. (in corners specially).

How can I do this?

Kind regards.

Title: Re: Output voltage from ERROR AMPLIFIER (BUCK converter)
Post by AnilReddy on May 8^th, 2015, 5:28am

Hi,

What is the range suitable for comparator?

Bye