Switching mode power supplies with controlled synchronization
US5130561A · kind A · utility
48Cited by
10References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Aug 29, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Two pulse-width modulated power supplies are synchronized to operate at 180.degree. of phase shift to reduce the peak amplitude of the instantaneous current drawn from the DC input bus. The circuit includes means for disabling the synchronization upon detection of an undervoltage fault condition on the output of either supply. This feature allows frequency programming techniques to be used to provide foldback current limiting for either supply without affecting the operation of the other supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.