Current sensing circuit and method of a high-speed driving stage
US6791368B2 · kind B2 · utility
33Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2003 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Aug 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a current sensing circuit and method of a high-speed driving stage, which comprises an input stage, a level converting unit, a feedback unit, a current mirror unit and a current shunting unit. The current sensing circuit is capable of linearly detecting the output current of the driving stage transistors, and directly condensing the detected current to an appropriate value using the geometric ratio of the transistors, so as to facilitate the subsequent signal processing circuit to use it for control purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.