Patent ID: 7224206
Filing Date: 2007-05-29
Classification: H02M,H03K

Abstract:
1. A charge pump integrated in a chip of semiconductor material comprising: a plurality of capacitive elements each one connected respectively to a corresponding circuit node of a plurality of circuit nodes of the charge pump, the circuit nodes being arranged in a sequence from an input node to an output node; a plurality of field effect transistors each one for selectively connecting a corresponding first one of circuit nodes with an adjacent second one of the circuit nodes, each transistor being made in a corresponding insulated body region; a plurality of first biasing means each corresponding respectively to one of the transistors, each first biasing means equalizing the body region of the corresponding transistor with the corresponding first circuit node when the corresponding transistor is closed; and a plurality of second biasing means each corresponding respectively to one of the transistors, each second biasing means equalizing the body region of the corresponding transistor with the corresponding second circuit node when the corresponding transistor is opened, wherein each transistor is controlled by a corresponding command signal, and wherein each first biasing means includes a first further transistor for selectively connecting the body region of the corresponding field effect transistor with the corresponding first circuit node, the first further transistor being controlled by the command signal, and wherein each second biasing means includes a second further transistor for selectively connecting the body region of the corresponding field effect transistor with the corresponding second circuit node, the second further transistor being controlled by a voltage at the corresponding first circuit node.