I'm wondering is there such a thing as a switched cap boost converter that is not based on voltage doubling operation?
Im designing for a very small, low power implant (short bursts of up to 20mA, long periods of 'sleep' 100uA). Inductor based supplies are not so suitable as inductors are quite large, and inductor boost converters are bad at very low currents.
Every switched cap converter seems to be a doubler. I thought I had found one not based on this principal (no mention of the word doubler in the datasheet) however the efficiency is approximated as...
Eff % = Vout/2Vin >>> clearly a doubler!
Im working with a battery nominal 3V, operating range 2-2.85V stepping up to 3.3 so im getting shocking efficiency using switched cap converters!
Any insights anyone???