Circuit for detecting an open load
US5438286A · kind A · utility
16Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1993 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Oct 19, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for the detection of an open load for a power MOS transistor is designed to operate in a switching mode. The MOS transistor is partitioned into two transistors disposed in parallel. The second transistor has a resistance in the conductive state higher than the first transistor. The circuit includes circuitry for enabling only the second transistor when the current is within a low value range, and circuitry for detecting an open load when the circuit is operating within the low current range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.