Patent Number: 6,297,972

Title: Backup power stage associated with a dual input power supply and method of operating the same

Abstract: A dual input power supply, a method of operating the power supply and a telecommunications power plant incorporating the power supply or the method. In one embodiment, the power supply includes: (1) a single stage power converter, coupled to an input of the power supply, configured to receive primary power subject to interruption and provide therefrom DC power to a DC bus; (2) an output power stage, coupled to the DC bus, configured to condition the DC power for delivery to an output of the power supply; and (3) a backup power stage, couplable to a backup power source and having an output coupled to the DC bus, configured to provide backup power during the interruption, the single stage power converter configured to restrict a reverse flow of the backup power therethrough during the interruption.

Inventors: Chen; Qing (Plano, TX)


International Classification: H02J 9/06 (20060101); H02M 5/22 (20060101); H02M 5/02 (20060101); H02M 005/45 ()

Expiration Date: 10/02/2018