Current limiting scheme for a converter
US9312772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2013 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Aug 3, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A modulator configured to control switching of current through an inductor of a converter according to a current limiting scheme while converting an input voltage to an output voltage, which includes a current limit generator and a comparator network. The current limit generator is configured to provide a periodic ramping current limit value based on either the input voltage or the output voltage, an inductance of the inductor, a timing signal, and a predetermined maximum output current of the boost converter. The comparator network is configured to provide a switch control signal to control switching of current through the inductor by comparing a current sense value indicative of a current through the inductor with a lesser of a compensation error value and the periodic ramping current limit value. The converter may be configured as a peak current mode control converter in either boost or buck mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.