In this paper we show two different schemes to implement a field programmable circuit that can connect 'n' capacitors as a charge-pump of, eventually, any topology and switching pattern. Capacitor connectivity is configured by means of registers that control multiplexers that, in turn, select the phase signal that controls each switch. It is also shown that, with any of these schemes, dynamic configuration of the circuit may be achieved by simply adding additional control phases.
Martinez, H.; Cosp, J. Field programmable switched-capacitor voltage converter. A: IEEE International Midwest Symposium on Circuits and Systems. "Proceedings of the 2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS)". Boise, Idaho: Institute of Electrical and Electronics Engineers (IEEE), 2014, p. 794-797.