Adaptive phase offset controller for multi-channel switching power converter
US8581440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2010 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Jun 24, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/1586
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An adaptive phase offset controller for use with a switching power converter having first and second channels. The controller includes a discriminator which detects a ‘critical condition’ in which a switching signal for the first channel transitions during a critical time interval so as to give rise to crosstalk that can corrupt the operation of the second channel's control circuit. When the discriminator detects a critical condition, a phase offset circuit offsets the phase of the first channel's switching signals, such that subsequent transitions occur outside of the critical time interval. A second discriminator and phase offset circuit are preferably employed to detect critical conditions which can give rise to crosstalk that can corrupt the operation of the first channel's control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.