Patent ID: 8847671

Claim:
A charge pump comprising, a plurality of branches each having serially-connected T-circuit cells, wherein each of the branches has a first end for receiving an input voltage and a second end for outputting a charge pump voltage, wherein each of the T-circuit cells comprises a first transistor, a second transistor, and a capacitor, wherein the first transistor and the second transistor of each of the T-circuit cells have a common drain, wherein the gate of the first transistor of a certain one of the T-circuit cells of a certain branch is connected to a first branch and the gate of the second transistor of the certain one of the T-circuit cells of the certain branch is connected to a second branch, wherein the T-circuit cells form an array having m number of branches and n number of levels, wherein the array has a j-index to represent a level position for the T-circuit cells and a k-index to represent a branch position for the T-circuit cells, wherein a first end of the capacitor of the certain one of the T-circuit cells is connected to the common drain of the certain one of the T-circuit cells, wherein a second end of the capacitor of the certain one of the T-circuit cells is connected to a signal, and wherein the phase of the signal is a function of the j-index and the k-index of the certain one of the T-circuit cells.