发明名称 |
Configurable multistage charge pump using a supply detect scheme |
摘要 |
A configurable multistage charge pump including multiple pumpcells, at least one bypass switch and control logic. The pumpcells are coupled together in series including a first pumpcell receiving an input voltage and at least one remaining pumpcell including a last pumpcell which generates an output voltage. Each bypass switch is coupled to selectively provide the input voltage to a pumpcell input of a corresponding one of the remaining pumpcells. The control logic is configured to determine one of multiple voltage ranges of the input voltage, to enable each pumpcell for a first voltage range and to disable and bypass at least one pumpcell for at least one other voltage range. A method of operating a multistage charge pump including detecting an input voltage, selecting a voltage range based on an input voltage, and enabling a number of cascaded pumpcells corresponding to the selected voltage range. |
申请公布号 |
US8704587(B2) |
申请公布日期 |
2014.04.22 |
申请号 |
US201213555848 |
申请日期 |
2012.07.23 |
申请人 |
RAMANAN KARTHIK;CUNNINGHAM JEFFREY C.;SYZDEK RONALD J.;FREESCALE SEMICONDUCTOR, INC. |
发明人 |
RAMANAN KARTHIK;CUNNINGHAM JEFFREY C.;SYZDEK RONALD J. |
分类号 |
G05F1/62;H02M3/18 |
主分类号 |
G05F1/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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