发明授权
US07847516B2 Circuit and method for detecting absent battery condition in a linear charger
有权
用于检测线性充电器中没有电池状况的电路和方法
- 专利标题： Circuit and method for detecting absent battery condition in a linear charger
- 专利标题（中）： 用于检测线性充电器中没有电池状况的电路和方法
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申请号： US12078887申请日： 2008-04-08
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公开(公告)号： US07847516B2公开(公告)日： 2010-12-07
- 发明人: Nien-Hui Kung , Kwan-Jen Chu
- 申请人： Nien-Hui Kung , Kwan-Jen Chu
- 申请人地址： TW Hsinchu
- 专利权人： Richtek Technology Corp.
- 当前专利权人： Richtek Technology Corp.
- 当前专利权人地址： TW Hsinchu
- 代理机构： Rosenberg, Klein & Lee
- 优先权： TW97109522A 20080318
- 主分类号： H02J7/06
- IPC分类号： H02J7/06 ; H02J7/24
摘要：
A circuit and method for detecting absent battery condition in a linear charger apply a detecting signal onto an output terminal of the charger and monitor the output terminal to receive a detected signal. The capacitance at the output terminal is significantly different between the presence and absence of a battery connected to the output terminal, and it is thus available to determine from the detected signal, if no battery is connected to the output terminal.
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