Control and Detection of Average Phase Current in Switching DC-DC Power Converters

摘要

A method for dc-dc power conversion using a switching phase. While a high side switch of the phase is closed, detecting that a high side current of the phase has risen to a set peak limit, and in response opening the high side switch. While the high side switch is open, preventing the high side switch from closing so long as a valley limit reached condition has not been detected, wherein the valley limit reached condition is detected when a low side current of the phase has dropped to a set valley limit. Other embodiments are also described and claimed.