| 摘要 |
Embodiments of the present invention provide a protective circuit. The protective circuit is applied to an inductive boost converter. The inductive boost converter comprises a transmission circuit and a charging circuit. The protective circuit comprises a detection circuit and a control circuit. The input end of the detection circuit is connected to the output end of the transmission circuit, the first output end of the detection circuit is connected to the input end of the charging circuit, and the second output end of the detection circuit is connected to the input end of the control circuit. The detection circuit detects whether a current input by the transmission circuit is a short-circuit current, and when a detection result is yes, transmits the detection result to the control circuit. The control circuit disconnects a connection between the charging circuit and the ground electrode, so as to prevent the charge stored by the charging circuit from being reversed to the input end of the inductive boost converter. The embodiments of the present invention can effectively prevent the current from being reversed to the input end, thereby improving the security of the inductive boost converter. |
