Multi-phase buck converter
US7301314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2006 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Sep 11, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-phase buck converter comprising a plurality of output switch arrangements each comprising a high side switch and a low side switch connected in series across a DC voltage and having a common connection coupled through a respective output inductor to a converter output node at which a converter output voltage is provided; a plurality of circuit arrangements providing pulse width modulated control signals to the high side and low side switches of each output switch arrangement for regulating the converter output voltage; a control arrangement providing a timing signal for controlling the start of conduction times of the high side and low side switches of each output switch arrangement and for providing an error signal related to a difference between the converter output voltage and a reference signal; a current sense arrangement coupled to each output inductor for providing a phase current signal related to the phase current provided by the respective output switch arrangement through the respective output inductor, there thus being provided a phase current signal for each output switch arrangement; and a circuit providing an average inductor current signal proportional to th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.