Driver stage for switching a load
US6218873A · kind A · utility
2Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2000 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Mar 30, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0822
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
When a short-circuit transistor is switched on, an impedance of an emitter-collector path through a switching transistor in a driver stage becomes higher as a load current becomes greater, and the load current and power loss in the switching transistor thus become lower. This effect is increased by connecting a voltage divider in parallel with the emitter-collector path through the switching transistor, by a parallel transistor. When the switching transistor is switched off, the parallel transistor blocks the current path via the voltage divider and the load for undesirable residual currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.