Method and apparatus for predriving a driver circuit for a relatively high current load
US5781045A · kind A · utility
23Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Aug 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/00361
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A predriver circuit for current switching, di/dt, noise control for high current load devices is disclosed. Parallel weak pull up and pull down circuit paths are combined with strong pull up and pull down circuit paths, respectively, to provide control over the rate of change of current through the load during predetermined turn-on and turn-off time periods. Predriver control for both NMOS driver, current sink NMOS, and PMOS driver, current source PMOS, are demonstrated. The predriver circuit provides control of the rate of current switching through the load without excessive delay in fully turning on or off the load device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.