SYSTEM AND METHOD FOR PEAK CURRENT MANAGEMENT TO A SYSTEM ON A CHIP

摘要

Various embodiments of methods and systems for managing current consumption in a portable computing device (“PCD”) are disclosed. A duration of time associated with a maximum allowable current consumption through a voltage regulator is divided into a plurality of N sub-durations. The current consumption for each sub-duration is monitored and a moving sum of current consumption is calculated for a plurality of past sub-durations. Using the sum of current consumption, a current budget for a next sub-duration or next set of consecutive sub-durations may be determined. Subsequently, throttling levels of power consuming processing components may be adjusted such that a maximum allowable current consumption over consecutive N sub-durations may be maintained beneath a peak current threshold without unnecessarily sacrificing processing capacity of the processing components.

主权项

1. A method for managing current consumption in a portable computing device (“PCD”), the method comprising:
dividing a duration of time into a plurality of N sub-durations, wherein the duration of time is associated with a maximum allowable current consumption through a voltage regulator; monitoring current consumption for each sub-duration; calculating a sum of current consumption for a plurality of past sub-durations; based on the maximum allowable current consumption and the sum of current consumption for the past sub-durations, calculating a remaining current budget; and based on the remaining current budget, authorizing adjustments to a throttling level for a processing component.