Power safety circuit, integrated circuit device and safety critical system
US9620992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2011 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Aug 26, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/414
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A power safety circuit comprises a power sense terminal; an output terminal; an output driver unit connected to the output terminal; an input terminal connectable to receive a first power from a power source and arranged to supply the first power to the output driver unit; and a power detection unit arranged to detect a state of the input terminal and provide a power sense signal to the power sense terminal; wherein the power sense terminal is arranged to supply a second power to the output driver unit when the power sense signal indicates a level of the first power below a minimum level for driving the output terminal. An integrated circuit device comprises at least one power safety circuit. A safety critical system comprises at least one integrated circuit device with at least one power safety circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.