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CN108026888B 半导体开关元件的控制电路及半导体装置 有权

半导体开关元件的控制电路及半导体装置
摘要：
半导体开关元件的控制电路对半导体开关元件进行控制，该半导体开关元件具备控制端子、主电极端子及电流感测端子，在所述主电极端子或所述电流感测端子连接有二极管。该控制电路具备过热检测电路、电流检测电路以及切断电路。过热检测电路在基于所述二极管的输出而检测出的温度大于或等于预先确定的设定温度时发出过热检测信号。电流检测电路在所述电流感测端子的输出值大于或等于预先确定的设定电流值时发出电流检测信号。切断电路在被输入了来自所述过热检测电路的所述过热检测信号和来自所述电流检测电路的所述电流检测信号这两者的情况下将所述半导体开关元件断开。
摘要（英）：

A control circuit for a semiconductor switching element includes a control terminal, a main electrode terminal, and a current sensing terminal, and controls the semiconductor switching element including a diode connected to the main electrode terminal or the current sensing terminal. The control circuit includes an overheat detection circuit, a current detection circuit, and an interruption circuit. The overheat detection circuit outputs an overheat detection signal when a temperature detected based on an output of the diode is equal to or higher than a predetermined set temperature. The current detection circuit outputs a current detection signal when an output value of the current sensing terminal is equal to or greater than a predetermined set current value. The interruption circuit turns off the semiconductor switching element when both the overheat detection signal from the overheat detection circuit and the current detection signal from the current detection circuit are input.

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