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Threshold voltage cancellation (Vt cancellation) scheme is applied to cancel the threshold drop associated with the diode-connected device and improve charge pump performance. Applying this scheme depends on generating control signals from the next stage so it cannot be applied on the output stage. In this paper Vt cancellation is applied for the output stage of modified Pelliconi pump. This is done...
In this paper, an ultra-low-voltage charge pump is presented. Two techniques are used to reduce required number of stages and improve power efficiency, namely clock boosting and Vt cancellation. Clock boosting is employed to increase the output voltage per stage resulting in lower number of stages, and hence smaller output resistance. Vt cancellation is achieved by using an auxiliary circuit that...
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