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Design >> Analog Design >> I designed Charge pump but problem Help me~
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Message started by EHY on Apr 16^th, 2015, 6:55am

Title: I designed Charge pump but problem Help me~
Post by EHY on Apr 16^th, 2015, 6:55am

I designed Charge pump like attached image.

When UP signal is turn on (width 100ps) current of pink color node switching quite properly.

but problem is that mirroring current of UP current(blue color node) is not fast switching.

so how can i increase switching speed of bule color node current??

i want to increase length of MOSFET to decrease UP/DN current mismatch.

Title: Re: I designed Charge pump but problem Help me~
Post by analog_rf on May 3^rd, 2015, 5:09am

are you saying that your "up" pulse width is 100ps?thats really small.check that up?