Patent ID: 8694121

Claim:
A programmable switching circuit with charge pumps for bio-stimulator, comprising: a programmable controlling circuit generating a pulse controlling signal and a selection controlling signal according to a controlling program; a pulse signal generating circuit generating a first pulse signal and a second pulse signal according to the pulse controlling signal, wherein the phase difference of the first pulse signal and the second pulse signal is 180 degrees to provide an alternative current; a charge pump regulating circuit including a first charge pump and a second charge pump, wherein said first and said second charge pumps generate a first and a second output signals, respectively, according to the first and the second pulse signals; and a selection controlling circuit selecting either the first output signal outputted by a first route or the second output signal outputted by a second route according to the selection controlling signal to provide said alternative current, said first and said second routes that share a common route and individually include a first switch and a second switch at the two ends of said common route.