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发明授权
US07282894B2 Method and apparatus for performing lossless sensing and negative inductor currents in a high side switch 有权
用于在高侧开关中执行正和负电感电流的无损检测的方法和装置

Method and apparatus for performing lossless sensing and negative inductor currents in a high side switch
摘要：
A current sensing circuit for use in a switching regulator having a high-side switch. The current sensing circuit includes a first sensing circuit coupled to the high-side switch for measuring current flowing in a positive direction through the high-side switch. The first sensing circuit includes a first replica device for generating a current which is a scaled version of the positive current flowing through the high-side switch. The current sensing circuit further includes a second sensing circuit coupled to the high-side switch for measuring current flowing in a negative direction through the high-side switch. The second sensing circuit includes a second replica device for generating a current which is a scaled version of the negative current flowing through the high-side switch.
摘要（中）：

一种用于具有高侧开关的开关调节器的电流感测电路。 电流检测电路包括耦合到高侧开关的第一感测电路，用于测量通过高侧开关在正方向上流动的电流。 第一感测电路包括用于产生电流的第一复制装置，该电流是流过高侧开关的正电流的缩放版本。 电流感测电路还包括耦合到高侧开关的第二感测电路，用于测量通过高侧开关沿负方向流动的电流。 第二感测电路包括用于产生电流的第二复制装置，该电流是流经高侧开关的负电流的缩放版本。

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