Adaptive input current limiting for switch-mode chargers

摘要

A system includes a voltage regulator module, a voltage comparator module, and a current limiting module. The voltage regulator module regulates an input voltage supplied by a power supply and supplies an output current to a load. The voltage comparator module compares the input voltage to a first threshold. The current limiting module decreases the output current when the input voltage decreases to less than or equal to the first threshold, decreases the output current until the input voltage increases to greater than the first threshold, and decreases the output current by an additional predetermined amount after the input voltage increases to greater than the first threshold.

主权项

1. A system comprising:
a voltage regulator module that regulates an input voltage supplied by a power supply and that supplies an output current to a load; a voltage comparator module that compares the input voltage to a first threshold; and a current limiting module that decreases the output current when the input voltage decreases to less than or equal to the first threshold, that decreases the output current until the input voltage increases to greater than the first threshold, and that decreases the output current further by an additional predetermined amount after the input voltage increases to greater than the first threshold.