Peak power control technique for primary side controller operation in continuous conduction mode
US9621053B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2014 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Nov 21, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter includes a primary side controller configured to operate the power converter in the discontinuous conduction mode during low to mid-power requirements and to operate the power converter in the continuous conduction mode during high or peak power requirements. The power converter includes a primary side auxiliary winding that provides a feedback signal to the primary side controller, and an adjusted resistor and diode circuit which is coupled to a multi-function feedback (FB) pin of the primary side controller. The primary side controller monitors for a peak power demand, upon detection of which a negative supply rail is enabled, which is used to compensate for voltage losses due to non-zero current while operating in the CCM, thereby enabling output voltage regulation while operating in the CCM during peak power demand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.