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Design >> High-Power Design >> 0.9V/0.6V step down DC DC converter [urgent help needed]
https://designers-guide.org/forum/YaBB.pl?num=1349180305

Message started by Larry_80 on Oct 2^nd, 2012, 5:18am

Title: 0.9V/0.6V step down DC DC converter [urgent help needed]
Post by Larry_80 on Oct 2^nd, 2012, 5:18am

Hello All,
I would like to design a voltage regulator(DC DC from 0.9v to 0.6v) CMOS (Inductorless) that drives a capacitive load. It is very critical that my output voltage tracks the power supply very well. i.e i want to maintain a constant voltage difference. so for example if supply goes up to 0.95v, want the output voltage to be 0.65v maintaining the difference of 0.3v.
Could anyone suggest the architecture to use? Does a switch capacitor DC DC converter track well? Any suggestions where i can find a literature to support this will help. So far all the IEEE papers i have found do not discuss what i am looking for.

Title: Re: 0.9V/0.6V step down DC DC converter [urgent help needed]
Post by Lex on Oct 3^rd, 2012, 2:07am

Doesn't sound difficult. Just use some circuit to subtract the input voltage by 0.3V, and use the result as a control voltage input for your DC-DC converter feedback loop?