Power semiconductor device for igniter
US8861175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2010 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Mar 26, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q3/004
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A power semiconductor device for an igniter comprises: a semiconductor switching device causing a current to flow through a primary side of an ignition coil or shutting off the current; and an integrated circuit driving and controlling the semiconductor switching device, wherein the integrated circuit includes: a first discharge device discharging charge accumulated on a control terminal of the semiconductor switching device and shutting off the semiconductor switching device so as to generate ignition plug spark voltage on a secondary side of the ignition coil during a normal operation; and a second discharge device slower discharging the charge accumulated on the control terminal in comparison with the first discharge device and shutting off the semiconductor switching device so that a voltage on the second side of the ignition coil is equal to or lower than the ignition plug spark voltage during an abnormal state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.