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US08188775B2 Circuit arrangement for operating voltage detection 有权
用于工作电压检测的电路布置

Circuit arrangement for operating voltage detection
Abstract:
A circuit arrangement for operating voltage detection has a detection block (1) and a control block (2). Detection block (1) has a first transistor (P1) that is connected between a first supply voltage terminal (VDD) and a first node (K1) and has a first control terminal (S1), a first resistor element (R1) that is connected between first node (K1) and second supply voltage terminal (VSS), a second transistor (P2) that is connected between first supply voltage terminal (VDD) and a second node (K2) and has a second control terminal (S2), a second resistor element (R2) that is connected between second node (K2) and second supply voltage terminal (VSS), a first switch (N1) that connects first node (K1) to second control terminal (S2), and a third resistor element (R3) that is connected between second control terminal (S2) and first supply voltage terminal (VDD). Control block (K2) is set up to derive a first switching signal as a function of a voltage at second node (K2), as well as a second switching signal by inverting the first switching signal. The first switching signal is supplied to first switch (N1), and the second switching signal to first control terminal (S1).
Abstract(Chinese):

用于操作电压检测的电路装置具有检测块（1）和控制块（2）。 检测块（1）具有连接在第一电源电压端子（VDD）和第一节点（K1）之间的第一晶体管（P1），具有第一控制端子（S1），第一电阻元件（R1） 连接在第一节点（K1）和第二电源电压端子（VSS）之间，连接在第一电源电压端子（VDD）和第二节点（K2）之间并具有第二控制端子（S2）的第二晶体管（P2） 连接在第二节点（K2）和第二电源电压端子（VSS）之间的第二电阻元件（R2），将第一节点（K1）连接到第二控制端子（S2）的第一开关（N1） 元件（R3），连接在第二控制端子（S2）和第一电源电压端子（VDD）之间。 设置控制块（K2）以通过反转第一切换信号来导出作为第二节点（K2）处的电压的函数的第一开关信号以及第二开关信号。 第一开关信号被提供给第一开关（N1），第二开关信号提供给第一控制端子（S1）。

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