Analog current estimation and digital estimation correction for a multiphase buck converter
US9385609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2014 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Jun 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1586
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A phase current estimator for a switching power converter includes analog circuitry for generating a phase current estimate error by comparing a phase current of the switching power converter to an analog representation of an estimate of the phase current. The phase current estimator further includes digital circuitry for revising the phase current estimate based on the phase current estimate error and a plurality of parameters associated with operation of the switching power converter. An estimator fault detection unit is provided for determining whether a difference between the phase current and estimate exceeds a threshold for indicating substandard phase current estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.