Backup power stage associated with a dual input power supply and method of operating the same
US6297972A · kind A · utility
Inventor
Key dates
| Filing date | May 10, 2000 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | May 10, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.