发明申请
US20040036450A1 Method for detecting the null current condition in a PWM driven inductor and a relative driving circuit
有权
用于检测PWM驱动电感器和相对驱动电路中的零电流状态的方法
- 专利标题： Method for detecting the null current condition in a PWM driven inductor and a relative driving circuit
- 专利标题（中）： 用于检测PWM驱动电感器和相对驱动电路中的零电流状态的方法
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申请号： US10438192申请日： 2003-05-14
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公开(公告)号： US20040036450A1公开(公告)日： 2004-02-26
- 发明人: Natale Aiello , Francesco Giovanni Gennaro
- 申请人： STMicroelectronics S.r.I.
- 申请人地址： IT Agrate Brianza
- 专利权人： STMicroelectronics S.r.I.
- 当前专利权人： STMicroelectronics S.r.I.
- 当前专利权人地址： IT Agrate Brianza
- 优先权： EP02425295.9 20020515
- 主分类号： G05F001/10
- IPC分类号： G05F001/10
摘要：
A method for detecting a null current condition in a PWM driven inductor connected between a voltage source node and a second circuit node of a line for outputting current to a load includes generating a derivative signal by time differentiating a voltage on the second node. The method further includes monitoring an instant when the derivative signal becomes negative, and signaling verification of the null current condition each time the derivative signal becomes negative.
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