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question on the ESR of switched capacitor or voltage doubler

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yschuang

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Hi, all

I am working on voltage doulber. There is a problem when I add the ESR shown in the figure. The voltage of the output can not be inverted or goes below zero and stayes at high. The voltage is supposed to be inverted @ -Vin. When I remove the ESR, everything goes right. The value of ESR is 0.1m ohm and of C is 10uF.
For more details like the operation, go to http://www.intersil.com/data/fn/fn3072.pdf
Thanks
 

gevy

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Re: question on the ESR of switched capacitor or voltage dou

What is switching frequency ?
 

yschuang

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Re: question on the ESR of switched capacitor or voltage dou

Hello, gevy

It is running @ 10k, 20k, and 100k Hz. I tried each of them.
 

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