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Design >> High-Power Design >> BOOST "DUTY CYCLE" ISSUE
https://designers-guide.org/forum/YaBB.pl?num=1352019281

Message started by AnilReddy on Nov 4^th, 2012, 1:54am

Title: BOOST "DUTY CYCLE" ISSUE
Post by AnilReddy on Nov 4^th, 2012, 1:54am

Hi all,

I want to intuitively understand why the "Duty" in a typical inductor-based DC-DC BOOST converter depends "quadratically" on the parameters like Output Voltage, Input Voltage, Losses..etc...

Mathematically, it is clear to me. But, Why should there be a second-order dependency in this converter, unlike in BUCK Converter?

Thank you..

Title: Re: BOOST "DUTY CYCLE" ISSUE
Post by yuvan on May 6^th, 2013, 4:21am

I guess intuitively the average current supplied to the output is a strong function of the duty. And same is the case for the 'equivalent resistance' offered by the inductor. So, the quadratic relation comes. Please correct me if I'm wrong.

Title: Re: BOOST "DUTY CYCLE" ISSUE
Post by AnilReddy on May 8^th, 2013, 9:18am

Hi Yuvan,

Thanks for the reply.

Anyways, i didn't understand what you were trying to say.

Can you please elaborate a bit?

Thanks...

Regards,
Anil Reddy