High-speed charge pump circuits

Details High-speed charge pump circuits High-speed charge pump circuits

2011-07-12

2011-07-12

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S148000, C327S536000, C331S018000, C331S025000, C331S034000, C375S373000

Reexamination Certificate

active

07977984

ABSTRACT:
A charge pump circuit includes at least one switching transistor and a level-shifter. The level-shifter has a cross-coupled pair of transistors. The level-shifter shifts a voltage of a first input signal to generate a level-shifted signal. The level-shifted signal controls a conductive state of the switching transistor to regulate an output voltage of the charge pump. A feedback loop circuit includes a detector and a charge pump. The detector compares an input signal to a feedback signal to generate first and second output signals. The charge pump includes at least two thin-oxide switching transistors and a level-shifter in another embodiment. The level-shifter shifts a voltage of the first output signal of the detector to generate a level-shifted signal. The two switching transistors are driven by the level-shifted signal and the second output signal of the detector to regulate an output voltage of the charge pump.

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