Method and apparatus for limiting inrush current during startup of a buck converter
US9882481B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2016 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Jul 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of regulating an output voltage of a buck converter during a startup period in which the buck converter is first enabled includes regulating the output voltage of the buck converter to a reference voltage under current-mode control during a first part of the startup period, and regulating the output voltage of the buck converter to the reference voltage under voltage-mode control during a second, later part of the startup period. The reference voltage ramps up from an initial voltage at the beginning of the startup period to a target voltage at the end of the startup period. Buck converter embodiments are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.