Patent ID: 6552600
Filing Date: 2003-04-22
Classification: H02M

Abstract:
An apparatus, comprising:a charge pump circuit having a plurality of serially-coupled stages, with a final stage of the plurality of serially-coupled stages having an output node to produce a negative output voltage and remaining stages of the plurality of serially-coupled stages having internal nodes; an initialization circuit coupled to a respective one of the internal nodes to discharge said respective one of the internal nodes responsive to an assertion of the initialization signal; a multiplexer coupled to an input of the initialization circuit and to the output node to decouple, responsive to a first control signal, the input of the initialization circuit from a first input signal and to couple, responsive to the first control signal, the input of the initialization circuit to a second input signal from the output node to discharge the respective one of the internal nodes; and a control circuit coupled to the multiplexer to provide the first control signal.