Integrated circuit with current-limited power output and associated method
US6603358B2 · kind B2 · utility
6Cited by
8References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2001 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Sep 26, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/504
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The integrated circuit includes a power FET for generating an output voltage, a pilot FET for sensing current through the power driving device and generating a reference voltage, and an amplifier circuit for comparing the reference voltage of the pilot device with the output voltage of the power driving device. The amplifier circuit includes a differential pair of matched bipolar junction transistors (BJTs) having a common base. A first BJT of the differential pair being diode-connected. The amplifier circuit controls the gates of the power FET and the pilot FET.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.