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发明授权
US08149021B2 Current detection circuit and voltage converter using the current detection circuit 有权
电流检测电路和电压转换器采用电流检测电路

Current detection circuit and voltage converter using the current detection circuit
摘要：
A first auxiliary switch circuit is connected to one terminal and a first terminal of a main switch circuit and generates a first auxiliary detection current. A second auxiliary switch circuit is connected to the other terminal and a second terminal of the main switch circuit and generates a second auxiliary detection current. A current adjustment detection circuit adjusts the first auxiliary detection current so that the potentials of the other terminal and the first terminal are equal and passes the first auxiliary detection current in a direction of receiving the current from the first auxiliary switch circuit and adjusts the second auxiliary detection current so that the potentials of the one terminal and the second terminal are equal and passes the second auxiliary detection current in a direction of outputting the current to the second auxiliary switch circuit, thereby generating a detection current being proportional to the output current.
摘要（中）：

第一辅助开关电路连接到主开关电路的一个端子和第一端子，并产生第一辅助检测电流。 第二辅助开关电路连接到主开关电路的另一端子和第二端子，并产生第二辅助检测电流。 电流调节检测电路调节第一辅助检测电流，使得另一端子和第一端子的电位相等并且在从第一辅助开关电路接收电流的方向上通过第一辅助检测电流，并且调整第二辅助检测电流 检测电流使得一端子和第二端子的电位相等并且在向第二辅助开关电路输出电流的方向上通过第二辅助检测电流，从而产生与输出电流成比例的检测电流。

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