Off-chip driver with voltage regulated predrive
US5440258A · kind A · utility
30Cited by
12References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Feb 8, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00384
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An off-chip driver with regulated supplies compensates for power supply fluctuations. The circuit reduces di/dt noise by providing complementary voltage regulators to regulate the high and low supplies to the driver stages such that they see a constant operating voltage regardless of changes in supply voltage, V.sub.CC. The circuit uses two push-pull stages which charge and discharge the output load capacitance, C.sub.0. This regulated voltage to the driver stages reduces di/dt noise and provides a constant overdrive voltage, constant gate slew rate, and constant staging delay over a specified external supply voltage range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.