发明授权
- 专利标题： Hot swap controller with zero loaded charge pump
- 专利标题（中）： 带零负载电荷泵的热插拔控制器
-
申请号： US12132267申请日： 2008-06-03
-
公开(公告)号： US07683693B2公开(公告)日： 2010-03-23
- 发明人: James Garrett
- 申请人： James Garrett
- 申请人地址： US ME South Portland
- 专利权人： Fairchild Semiconductor Corporation
- 当前专利权人： Fairchild Semiconductor Corporation
- 当前专利权人地址： US ME South Portland
- 代理机构： Cesari and McKenna, LLP
- 代理商 Edwin H. Paul, Esq.
- 主分类号： H03K5/08
- IPC分类号： H03K5/08
摘要：
The present invention includes a pass transistor that limits current drawn from a circuit without using a series resistor and while drawing minimal current from an external supply. A current mirror of the output current is formed and compared to a reference current. When the output current increases, the mirror current increases proportionally, and when a threshold is crossed, the pass transistor is turned off. The pass transistor is biased from a charge pump that provides a voltage, a current from which a current mirror is drawn that controls the pass transistor.
公开/授权文献
- US20090256616A1 HOT SWAP CONTROLLER WITH ZERO LOADED CHARGE PUMP 公开/授权日：2009-10-15
信息查询
IPC分类:
