公开(公告)号：US20040036450A1

公开(公告)日：2004-02-26

申请号：US10438192

申请日：2003-05-14

申请人： STMicroelectronics S.r.I.

发明人： Natale Aiello ,  Francesco Giovanni Gennaro

IPC分类号： G05F001/10

CPC分类号： H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

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.

摘要翻译： 用于检测连接在用于向负载输出电流的线路的电压源节点和第二电路节点之间的PWM驱动电感器中的零电流状态的方法包括通过时间微分第二节点上的电压来产生导数信号。 该方法还包括监视导数信号变为负的瞬间，以及每当导数信号变为负时，对零电流状态的信令验证。