Digital squib driver circuit
US8203822B2 · kind B2 · utility
1Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2007 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Nov 10, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/01177
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A driving circuit for generating a required firing current for a safety device comprising an arrangement of a first transistor (M2) connected in series with a second transistor (M3); and a power control transistor (M1) connected in series with the first transistor; characterised in that the first and second transistors operate in fully switched on mode (Rds(on)) and the required firing current (I(squib)) is generated by means of varying the voltage (Vc) across the gate source of power control transistor and the first and second transistors in a predetermined manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.