Calibration method for current detection and protection mechanism and calibration device using same

A calibration device for a current detection and protection mechanism, the calibration device being used with a universal serial bus control chip with at least one preset conversion parameter, the calibration device comprising:

• an electronic load generation unit electrically connected with the universal serial bus control chip, wherein the electronic load generation unit provides an electronic load, so that the universal serial bus control chip generates a constant load current, wherein the universal serial bus control chip uses the at least one preset conversion parameter to generate an analog-to-digital conversion value according to the constant load current;
• an interface conversion unit electrically connected with the universal serial bus control chip, wherein if the analog-to-digital conversion value does not comply with a universal serial bus transfer specification, the analog-to-digital conversion value is converted into the analog-to-digital conversion value complying with the universal serial bus transfer specification by the interface conversion unit;
• and
• a main control unit electrically connected with the electronic load generation unit and the interface conversion unit, wherein after the analog-to-digital conversion value complying with the universal serial bus transfer specification is inputted into the main control unit, the main control unit uses a to-be-calibrated current backward calculation means in the calibration device and the at least one preset conversion parameter to generate and store a to-be-calibrated output current according to the analog-to-digital conversion value complying with the universal serial bus transfer specification, wherein the main control unit uses a conversion parameter calibration means in the main control unit to generate at least one calibrated conversion parameter according to the constant load current and the to-be-calibrated output current,
• wherein the at least one preset conversion parameter in the universal serial bus control chip is replaced with the at least one calibrated conversion parameter by the main control unit, and the universal serial bus control chip uses the at least one calibrated conversion parameter to generate a calibrated analog-to-digital conversion value, so that an over current protection mechanism is accurately enabled.