Lucent Technologies Inc.

Amit Kumar Banerjee

Richard Joseph McPartland

Duane J Loeper

An integrated circuit-based charge pump generates an output voltage having a greater magnitude than a power supply voltage. The charge pump has a charge pump section having a plurality of alternating stages driven by first and second alternating, non-overlapping clock signals, said plurality of alternating stages including an input stage for receiving the power supply voltage and an output stage for generating at a last stage node a last stage voltage having a greater magnitude than the power supply voltage. A gating transistor is coupled at a drain terminal to the last stage node, wherein the gating transistor is clocked by one of said clock signals and is biased so that the gating transistor, during a boost phase, gates the last stage voltage to a load coupled to the source terminal of the gating transistor without a voltage drop and, at other times, turns off to prevent charge from flowing from the load into the last stage node of the charge pump section.

Charge pump with no diode drop at output stage

The voltage regulator includes a regulator circuit, connected between a high potential and a low potential, regulating an output voltage based on an input voltage. The regulator circuit includes a changing circuit which changes at least one of a voltage range of the output voltage and a rate at which the output voltage changes with respect to changes in the input voltage. The changing circuit selectively increases a maximum value of the voltage range of the output voltage, and also selectively increases the rate at which the output voltage changes with respect to changes in the input voltage.

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Emmaus, PA, United States of America

Amit Kumar Banerjee