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CN109308086A 用来改进电磁兼容性能的电流和电压调节方法 审中-实审

用来改进电磁兼容性能的电流和电压调节方法
摘要：
一种用来改进IC装置的电磁兼容性能操作的电流调节器电路包括：用于接收经调节的电压信号的输入；用于以所需电压电平提供输出电压的输出，所述输出电压展现来自负载的噪声；第一场效应晶体管FET，包括耦合到所述输入的第一源电极、耦合到所述输出的第一漏电极，和第一栅电极；耦合到所述输出的电压箝位电路，所述电压箝位电路被配置成基于所述噪声传导变化的电流；用于提供恒定电流的恒定电流源；以及第二FET，包括耦合到所述输出的第二源电极、耦合到所述恒定电流源和所述第一栅电极的第二漏电极和耦合到所述电压箝位电路的第二栅电极以镜像化所述第二FET中的所述变化的电流。
摘要（英）：

A current regulator circuit to improve electromagnetic compatibility performance operation of an IC device includes an input to receive a regulated voltage signal, an output to provide an output voltage at a desired voltage level, the output voltage exhibiting noise from a load, a first field effect transistor FET including a first source electrode coupled to the input, a first drain electrode coupled to the output, and a first gate electrode, a voltage clamp circuit coupled to the output, the voltage clamp circuit configured to conduct a varying current based upon the noise, a constant current source to provide a constant current, and a second FET including a second source electrode coupled to the output, a second drain electrode coupled to the constant current source and to the first gate electrode, and a second gate electrode coupled to the voltage clamp circuit to mirror the varying current in the second FET.

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