Patent ID: 8564273

Claim:
A method for dynamic adjustment of a current limit of a power management unit comprising the steps of: (1) providing a power management unit comprising a control unit, voltage comparing means, current comparing means, and a controlled current source; (2) connecting a power source to the power management unit; (3) setting a maximal allowable input current limit to a default value; (4) enabling power transfer between a power source and a load if the input voltage is higher than a threshold voltage and there is sufficient overhead between input voltage and output voltage; (5) checking if an input voltage is lower than a defined threshold voltage V in — low and, if so, go to step (6), else repeat step (5); (6) checking if there is sufficient overhead between input voltage and output voltage if so, go to step (7), otherwise go to step (8); (7) reducing input current limit and go to step (5); and (8) disabling the power management unit.