Charge pump circuit for providing multiplied voltage
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United States of America Patent
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Apr 11, 2017
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app pub date -
Sep 9, 2015
filing date -
Sep 9, 2015
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Abstract
A charge pump comprises one or more pump stages for providing a negative boosted output voltage. Each of the one or more pump stages comprises a P-channel transistor formed in an isolated P-well and an N-channel transistor coupled in series with the P-channel transistor. Forming the P-channel transistor in the isolated P-well essentially eliminates a raised threshold voltage due to body effect.
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