Power supply for class D amplifier in energy efficient applications
US9973158B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2016 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Oct 31, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power supply for use with Class D amplifiers in energy efficient applications is described herein. The power supply reduces the effects of off side charging and improves cross regulation. The topology of the power supply can be designed to minimize quiescent mode losses through resonant switching of some or all active switches. Additionally, the power supply can be implemented without external resonant inductors, the power supply can be implemented with smaller capacitors that have longer lifetime ratings, the switching losses present in a power factor correction stage of the power supply can be reduced, and/or a modified power factor correction choke can be utilized to reduce energy loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.