Control Method and Control Device for Electronic Fuses

A control device for an electronic fuse, comprising:

• a detection module configured to detect a current passing through the electronic fuse regularly at a time interval;
• a storage module, coupled to the detection module, configured to store a plurality of current values detected by the detection module at a plurality of time points;
• a trip current determination module, coupled to the storage module, configured to determine a plurality of trip currents corresponding to a plurality of trip time based on the plurality of current values, wherein there is an exponential relationship between the plurality of trip time and the time interval, and the trip current determination module performs the following steps to determine the plurality of trip currents:
• (a) for trip time within the plurality of trip time that are less than or equal to a first value, performing a plurality of arithmetic mean operations on the plurality of current values according to the exponential relationship between each trip time and the time interval, to obtain a first portion of trip currents corresponding to a current time point in the plurality of trip currents;
• (b) for trip time within the plurality of trip time that are greater than the first value, based on a second value, selecting a plurality of obtained trip currents corresponding to each trip time from the first portion of trip currents corresponding to the current time point and a plurality of first portions of trip currents corresponding to a plurality of previous time points, to perform a plurality of arithmetic mean operations to obtain a second portion of trip currents corresponding to the current time point in the plurality of trip currents;
• and
• (c) outputting the first portion of trip currents and the second portion of trip currents as the plurality of trip currents;
• a plurality of comparators, coupled to the trip current determination module, respectively configured to compare the plurality of trip currents with preset current values corresponding to the plurality of trip time in a preset trip current versus trip time curve, to generate a plurality of comparison results;
• and
• a switch module, coupled to the plurality of comparators, configured to control the state of the electronic fuse based on the comparison results of the plurality of comparators.