Patent ID: 8513920

Claim:
A method allowing switched power converters, providing simultaneously charging power for at least one battery and current to operate an electronic device, to stay out of current limit mode for the maximum possible range of system load requirements, comprising the following steps: (1) providing a synchronous switched power converter, a means to measure an input current of the switched power converter, and means to control a charge current; (2) sensing the input current of the switched power converter and perform steps 3 and 5 in parallel; (3) checking if the input current is higher than a maximum input current limit of the power converter and, if negative, repeat step (3) in a next clock cycle, else go to step (4); (4) reducing said input current via turning off a high-side switch of said power converter and go to step (3); (5) checking if the actual input current is higher than a defined portion of the maximum input current limit of the power converter and, if negative, repeat step (5), else go to step (6); and (6) reduce the charge current and go to step (5).