Design and analysis of on-chip charge pumps for micro-power energy harvesting applications

Charge balance law based on conservation of charge is stated and employed to analyze charge pumps. For micro-power on-chip implementations, both the positive-plate and the negative-plate parasitic capacitors have to be considered. A first iteration approximation analysis is proposed to analyze charge pumps with parasitic capacitors. Using a 0.35µm CMOS process, 8X linear, Fibonacci and exponential charge pumps are designed and their performances are compared and confirmed by simulations.