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发明授权
CN105575338B 负压保护电路 有权

负压保护电路
摘要：
本发明提供一种负压保护电路。本发明负压保护电路，包括：负压输出电路、采样电路、负压转换电路、控制器；其中，所述负压输出电路的输出端与所述采样电路的输入端连接，所述采样电路的输出端与所述负压转换电路的输入端连接，所述负压转换电路的输出端与所述控制器的输入端连接；所述负压输出电路，用于输出负压；所述采样电路，用于采样所述负压输出电路输出的负压，并将所述负压反馈给所述负压转换电路；负压转换电路，用于将所述采样电路反馈的所述负压转换为正压，并将所述正压反馈给所述控制器；所述控制器，用于根据所述负压转换电路反馈的所述正压进行电压保护。本发明实现了对负压输出电路的过压和欠压保护。
摘要（英）：

The invention provides a negative voltage protection circuit. The negative voltage protection circuit comprises a negative voltage output circuit, a sampling circuit, a negative voltage converting circuit and a controller, wherein the output end of the negative voltage output circuit is connected with the input end of the sampling circuit, the output end of the sampling circuit is connected with the input end of the negative voltage converting circuit, and the output end of the negative voltage converting circuit is connected with the input end of the controller; the negative voltage output circuit is used for outputting a negative voltage; the sampling circuit is used for sampling the negative voltage output by the negative voltage output circuit and feeding the negative voltage back to the negative voltage converting circuit; the negative voltage converting circuit is used for converting the negative voltage fed back by the sampling circuit into a positive voltage and feeding the positive voltage back to the controller; and the controller is used for carrying out voltage protection according to the positive voltage fed back by the negative voltage converting circuit. The negative voltage protection circuit realizes overvoltage and under-voltage protection of the negative voltage output circuit.

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