This disclosure describes techniques to monitor the operation of a USB type C connector to prevent damage to charging ports and/or connected devices. The operating temperature of a USB type C connector is monitored by the use of a negative temperature coefficient thermistor (NTC) positioned close to the USB connector. Voltage across the NTC falling below a threshold indicates high temperature and causes the system to disconnect the connector from the power supply. In addition to over temperature protection, if the power supply falls below a threshold, the described system disconnects the connector from the power supply.
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HungChe, Hsu; ChiaMing, Chang; WeiChih, Liao; ShihPing, Lin; and ChungYi, Pan, "Novel legacy A-C cable with the capability of predicting abnormal charging", Technical Disclosure Commons, (August 26, 2019)