Time-sharing current sense circuit for a multi-phase converter
US6960905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2004 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | May 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a time-sharing current sense circuit for a multi-phase converter, a common transconductive amplifier is selectively connected to the channels of the converter power stage by a plurality of first switches under the control of a set of control clocks to detect the channel current of a selected channel among the channels so as to generate a sense current, and a sense current generated by the common transconductive amplifier from the sensed channel current is switched by a plurality of second switches under the control of the same control clocks to connect to one of a plurality of sampling-and-holding circuits each corresponding to one of the channels to generate a current sense signal to modulate the channel current of the selected channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.