Patent ID: 6028780
Filing Date: 2000-02-22
Classification: G11C,H02M

Abstract:
A charge pump circuit including:(a) an input for receiving an input voltage to be pumped;(b) a first auxiliary charging capacitor for receiving a first phase clocking signal;(c) a second auxiliary charging capacitor for receiving a second phase clocking signal, the second phase clocking signal being of opposite phase to the first phase clocking signal;(d) an auxiliary charge pump, coupled to the input and the first and second auxiliary charging capacitors, and having a first and a second auxiliary channel, for alternately pumping the input voltage to a voltage Vcharge in excess of the input voltage in each of the first and second auxiliary channels in response to the first and second phase clocking signals;(e) a first primary charging capacitor for receiving the first phase clocking signal;(f) a second primary charging capacitor for receiving the second phase clocking signal;(g) a primary charge pump, coupled to the input and to the first and second auxiliary channels of the auxiliary charge pump and to the first and second primary charging capacitors, and having a first and a second primary channel, for alternately pumping the input voltage to a voltage in excess of the input voltage in each of the first and second primary channels under the control of the first and second auxiliary channels and in response to the first and second phase clocking signals;(h) an output, coupled to each of the first and second primary channels, to allow transmission of a voltage pumped charge through the first and second primary channels.