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Simulating switched cap converter using ideal elements

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panchkapunch

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Hi,

I am trying to design a switch cap DC-DC converter in Cadence (Spectre 6). I tried to use ideal switches and caps. With just an output cap, converter converged to desired value in transient simulation. When I tried to add a dc Iload in paralle to Cout (to model the loading circuitry behind it), the converter converged to weird values (MV)? Is there a way to get rid of this issue?

G
 

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