发明授权
- 专利标题: Fast-switching low-noise charge pump
- 专利标题(中): 快速切换低噪声电荷泵
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申请号: US11953575申请日: 2007-12-10
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公开(公告)号: US08018269B2公开(公告)日: 2011-09-13
- 发明人: Shen Wang , Sang-Oh Lee , Jeongsik Yang
- 申请人: Shen Wang , Sang-Oh Lee , Jeongsik Yang
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 代理商 Larry J. Moskowitz
- 主分类号: G05F1/10
- IPC分类号: G05F1/10
摘要:
In one embodiment of the invention, a method for a charge pump is disclosed. The method includes biasing a plurality of transistors; switching a pair of main transistor switches to apply or remove a net charge on an output terminal though the biased transistors; and turning on auxiliary transistor switches when the main transistor switches are turned off. The auxiliary transistor switches when turned on provide an auxiliary equalizing path to nodes between the main transistor switches and the biased transistors. The auxiliary equalizing path equalizes voltages between the intermediate nodes to rapidly turn off the biased transistors and reduce noise on the output terminal of the charge pump.
公开/授权文献
- US20090121759A1 FAST-SWITCHING LOW-NOISE CHARGE PUMP 公开/授权日:2009-05-14
信息查询
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