Power supply acoustic noise mitigation

摘要

A method and system for reducing acoustic power supply noise, specifically acoustic noise related to power supply switching frequencies in a computing device, is disclosed. In one embodiment, a controller can monitor power consumed by the computing device, and an operational state of the computing device can be determined. If the computing device is in a first operational state and the power consumed is greater than a threshold amount, then the power supply can be operated at a first switching frequency or mode of operation, thereby avoiding switching frequencies that can produce acoustic noise.

主权项

1. A method for controlling a power supply that is operable in at least two operating modes, the method comprising:
by a controller connected to the power supply: measuring a current supplied to a computing device by the power supply when an operational state of the computing device is determined to be in a low power state; and configuring the power supply to operate in an operating mode of the at least two operating modes when the current is greater than a predetermined current, wherein the operating mode reduces an audible noise of the power supply, and the power supply operates at a normalized switching frequency in the operating mode.