Power supply system and short circuit and/or bad connection detection method thereof, and power converter thereof

A power supply system, comprising:

• a power converter for converting an input voltage to an output voltage and supplying an output current, wherein the output voltage and the output current are supplied to an electronic device through a cable;
• and
• a bad connection detection unit, including:
• a voltage sensing circuit for sensing an actual voltage received by the electronic device;
• a current sensing circuit for sensing an actual current received by the electronic device;
• a first analog-to-digital converter for converting the actual voltage to a first digital signal;
• a second analog-to-digital converter for converting the actual current to a second digital signal;
• and
• a calculation circuit for determining whether or not a bad connection occurs according to the first digital signal, the second digital signal, the output voltage and the output current.

A bad connection detection method of a power supply system, wherein the power supply system includes a power converter for converting an input voltage to an output voltage and supplying an output current, the output voltage and the output current being supplied to an electronic device through a cable, the bad connection detection method of the power supply system comprising the steps of:

• sensing a actual voltage and an actual current received by the electronic device and converting the actual voltage and the actual current to an actual voltage digital signal and an actual current digital signal, respectively;
• comparing the actual voltage digital signal and the actual current digital signal with a desired level of the output voltage and a desired level of the output current, respectively;
• and
• when a difference between the actual voltage digital signal and the desired level of the output voltage exceeds a first predetermined threshold difference, and/or when a difference between the actual current digital signal and the desired level of the output current exceeds a second predetermined threshold difference, determining that a bad connection occurs.

A bad connection detection method of a power supply system, wherein the power supply system includes a power converter for converting an input voltage to an output voltage and supplying an output current, the output voltage and the output current being supplied to an electronic device through a cable, the bad connection detection method of the power supply system comprising the steps of:

• sensing a actual voltage and an actual current received by the electronic device and converting the actual voltage and the actual current to an actual voltage digital signal and an actual current digital signal, respectively;
• sensing the output voltage and the output current and converting the output voltage and the output current to an output voltage digital signal and an output current digital signal, respectively;
• comparing the actual voltage digital signal and the actual current digital signal with the output voltage digital signal and the output current digital signal, respectively;
• and
• when a difference between the actual voltage digital signal and the output voltage digital signal exceeds a first predetermined threshold difference, and/or when a difference between the actual current digital signal and the output current digital signal exceeds a second predetermined threshold difference, determining that a bad connection occurs.