Driver circuit, corresponding system and method
US10784858B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 16, 2019 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Jan 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40013
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driver circuit includes a supply node, a control node configured to receive a control signal, and an output node. An output transistor is coupled to the output node to provide the CAN bus drive signal via the current path through the output transistor. A current mirror is in a current line from the supply node to the output node through the output transistor. The current line includes an intermediate portion between the current mirror and the output transistor. The current mirror is configured to be switched, as a function of the control signal between a first, dominant mode, with the CAN bus drive signal applied to the output node via the output transistor, and a second, recessive mode, with the output transistor providing a high output impedance at the output node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.