MIT Method for breaking power at high temperature and high current and being automatically recoverable based on Metal-Insulator Transition and switch for using the same

摘要

The present invention is based on the MIT technology to protect the system by blocking the overcurrent when the overcurrent flows, and it is also possible to return to the automatic system based on the MIT technology which allows the normal current to flow automatically to the system when the overcurrent returns to the normal current A high temperature and high current blocking method and a switch using such a method are provided by comparing the magnitude of the first threshold voltage (V _th1 ) with the magnitude of the first FET voltage, which is the voltage between the gate (G) and the source (S) If the first FET voltage is less than the first threshold voltage V _th1 , the first FET is turned off. If the first FET voltage is greater than the first threshold voltage V _th1 , The second FET voltage is divided by the first FET and the second reference resistor R _ref2 to calculate the second FET voltage to be input to the second FET, and the magnitude of the second FET voltage and the second threshold voltage comparing the amount of (V _th2) and the second voltage of the second FET being Is greater than the voltage (V _th2) and determines the second FET in the on (on) state and the second characteristic to determine a when the FET voltage is less than the second threshold voltage (V _th2) off the second FET (off) .