Controllable semiconductor switching device having integrated current limitation and overheating disconnection
US5187632A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1992 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Jul 8, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A controllable semiconductor switching device having integrated overload protection of a load current path, including a switching section in the load current path and a multiplicity of main switching cells acting in parallel and having load-side terminals and non-load-side terminals including control terminals. The control terminals of the main switching cells are directly connected in a highly conducting manner among one another. A multiplicity of auxiliary switching cells are provided which carry a part of a total load current in parallel with the main switching cells in order to achieve an overload protection, and having load-side terminals and non-load-side terminals. The number of auxiliary switching cells are less than the number of main switching cells. The main switching cells and the auxiliary switching cells form the switching section. The load-side terminals of the main and auxiliary switching cells are directly connected in a highly conducting manner among and to one another, as are the non-load-side switching terminals. A second semiconductor switch has a switching section connected between the non-load-side switching terminals of the main switching cells. An element f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.