msudans wrote on Oct 18th, 2007, 7:21am:Can someone point me to a 1.5x voltage multiplication circuit, i.e, Vout=1.5*Vin ?
Thanks
I think you are looking for something like...
1) charge two caps in series up to Vin.
2) put these two caps in parallel - this gives you Vin/2 (in steady state)
3) put these two caps in series with Vin - this gives you about 3/2*Vin minus whatever your load pulls off the caps.
This is very power efficient and doesn't depend on cap matching, but bottom plate parasitics will really mess things up so big external caps are normally used for this sort of thing.
rg