Output driver for high-speed device
US5719491A · kind A · utility
6Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1996 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Dec 2, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/227
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An output driver for providing a gate voltage to an external positive-channel field-effect transistor (PFET) device. A capacitor accumulates charge which, upon switching by an input switching signal, is applied, in addition to the supply voltage, to the base of a drive circuit NPN transistor to rapidly pull the PFET gate voltage, derived at the emitter of the drive circuit NPN transistor, up to the supply voltage. An active voltage limiter, coupled in parallel with the drive circuit, limits excursion of the gate voltage with respect to the supply voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.