STAGE BASED FREQUENCY OPTIMIZATION FOR AREA REDUCTION OF CHARGE PUMPS
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United States of America Patent
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Issued Date -
Aug 22, 2024
app pub date -
Jul 3, 2023
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Feb 16, 2023
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Abstract
A stage-based frequency optimization for a charge pump achieves a higher area efficiency by operating different stages of the charge pump at their optimized frequency simultaneously, instead of single common frequency, to obtain greater output strength. A first set of stages uses triple well devices as transfer switches and operates at a first, higher frequency. The first stages supply a second set of stages using high voltage devices as transfer switches and operates at a second, lower frequency. The two set of stages are connected through a frequency transition circuit.
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