stephen_chou
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Posts: 5
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Hi Rob, I think that maybe your analysis make sence! But there is still something I don't understand. I resolved the oscillation by FIB, but the transient simulation result between before-FIB and after-FIB is almost same. If the reason is because of parasitic parameters(i.e. ESR,ESL,bongding wire inductance ...), how can I explain this? Sheldon and Rob, sorry for my unclearly description. I just used the current mode theory that describe in the paper which I refered. The current mode method just make sure the output impedance of chargepump higher enough compared to load impedance. Therefore the output pole is almost only depend on load current and output capacitor. There is some difference between my structure and this paper's. For example, there are no R1, M6/M7 loop, diode D1 and D2. Rob, I don't understand what you said "If you are using the flying capacitor in the traditional way to actually transfer the charge then the stabilizing parameters are completely different." You know, the tranditional doubler chargepump converter is using 4 switchs and a flying capacitor. So what's the difference do you mean? Thanks, Regards, Stephen
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