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cmos Voltage Step down/Step up detecting circuit in IC

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gilbertomaldito

gilbertomaldito

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downstep voltage

can somebody explain how a cmos voltage step-up/step-down detecting device works? thanks a alot = )
 

simple voltage step up ic

I have never heard this term" step-up/down detecting".

Are you sure you don't mean step-up/down converter?

You can link to an example, then we will explain.
 

step-up/down circuit

I was actually reading some patents and i found this one: **broken link removed**

I was looking at the invention's first embodiment. Please see figure 3 and 4(a and b).
Actually, its not only the detecting circuit that I was confused about but the whole cmos circuit itself. I dont understand how it was able to attain the waveforms in fig 4b. It was explained in the "summary of the invention" number 25 page 13, but I still dont get it why or how, basing on the circuit. Can you help me? thanks = )[/img]
 

andrew_matiga said:
can somebody explain how a cmos voltage step-up/step-down detecting device works? thanks a alot = )
Click to expand...

easy, use a fast responsed comparator and a delayed (slow responsed) 0dB buffer.

When voltage step-up, comparator will ouput '1', or else '0', then latch the data quickly.
 

you can use bulk structure for voltage down and booster for voltage up
 

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