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发明授权
CN109842089B 输入保护电路 有权

输入保护电路
摘要：
一种输入保护电路包含电流检测电路、电压检测电路、闩锁电路和输出电路。电流检测电路用于接收电力输入，当输入电流大于阈值电流时，电流检测电路输出控制电流。电压检测电路耦接于电流检测电路，当输入电压大于阈值电压时，电压检测电路输出控制电压。闩锁电路耦接于电流检测电路和电压检测电路，当闩锁电路接收到控制电压或控制电流时，闩锁电路所输出的开关电压等于参考电压。输出电路耦接于电流检测电路、电压检测电路和闩锁电路，当开关电压等于参考电压时，输出电路停止输出电力输出。
摘要（英）：

An input protection circuit includes a current detection circuit, a voltage detection circuit, a latch circuit and an output circuit. The current detection circuit receives a power input, and when an input current exceeds a threshold current, the current detection circuit outputs a control current. The voltage detection circuit is coupled to the current detection circuit, and when the input voltage exceeds a threshold voltage, the voltage detection circuit outputs a control voltage. The latch circuit is coupled to the current detection circuit and the voltage detection circuit. When the latch circuit receives the control voltage or the control current, a switching voltage outputted by the latch circuit is equal to a reference voltage. The output circuit is coupled to the current detection circuit, the voltage detection circuit and the latch circuit. When the switching voltage is equal to the reference voltage, the output circuit stops outputting a power output.

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