System and method for suppressing a settling voltage in a switched mode power supply
US9601992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Jan 13, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure relates to a switching power supply with regulated voltage suppression to reduce transformer audio noise. The switching power supply is operable to be fed a zero crossing voltage and to generate an output voltage. The output voltage may have a voltage level set using a modulated gate signal. A circuit is provided to reduce audio noise in a switching power supply by setting a ringing suppression time of the modulated gate signal to a first time period when the zero crossing voltage is below a predetermined voltage threshold and to a second time when the zero crossing voltage is above the predetermined threshold voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.