Inrush current limitation circuit and method
US10177554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2016 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Dec 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and circuit for a power supply unit (PSU) suitable for use in an information handling system to detect an inrush current reaching an inrush current threshold, to fully turning off, by a control circuit of the PSU, a series transistor to block the inrush current, to transfer, while the series transistor is fully turned off, magnetic energy stored in a boost choke to a bulk capacitor, and to fully turn on, by the control circuit of the PSU, the series transistor again immediately after the series transistor was in a fully turned off state, wherein the fully turning on occurs after the magnetic energy stored in the boost choke has been transferred to the bulk capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.