Electromagnetic load circuit failure diagnosis device
US8436623B2 · kind B2 · utility
4Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2009 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Sep 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A layer short-circuit of a switch element such as a FET included in an electromagnetic load circuit is detected to accurately perform a failure diagnosis of the electromagnetic load circuit. A failure diagnosis circuit 101 is provided which detects a layer short-circuit in which a high-side switch element, a low-side switch element, or an electromagnetic load itself short-circuits with a power supply voltage terminal or a ground in a state of having a predetermined impedance to perform a failure diagnosis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.