Controlling a multi-mode switching converter

摘要

Systems and methods for controlling a switching converter using a duty cycle associated with either a buck mode or a boost mode of the switching converter. More particularly, a controller determines when to change between buck mode and boost mode based on the duty cycle associated with one of the buck mode or the boost mode.

主权项

1. A switching converter comprising:
a buck branch with an associated buck duty cycle, the buck branch comprising a first plurality of switches; a boost branch with an associated boost duty cycle, the boost branch comprising a second plurality of switches; and a controller in communication with the buck branch and the boost branch and being configured to:
monitor a respective state of each of the first plurality of switches and the second plurality of switches;determine, based on monitoring the respective state of each of the first plurality of switches and the second plurality of switches, the buck duty cycle or the boost duty cycle; andresponsive to the determined duty cycle reaching a threshold duty cycle, change between a buck mode and a boost mode.