Driver circuit including amplifier operated in a switching mode
US5828245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1996 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Oct 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driver circuit with an amplifier operated in a switching mode has threshold detectors with devices to compare the amplifier input and output voltage respectively to predetermined minimum and maximum levels representing fully off and fully on conditions for the driver circuit. The circuit provides signals to enable the amplifier to draw current from a supply only during transitions between the threshold levels and to otherwise disable the amplifier. The circuit is beneficial particularly when operating the amplifier from a voltage supply of very limited current capability, such as a charge pump voltage in an integrated circuit. The switching mode amplifier can be applied in high performance driver integrated circuits alone or in combination with innovative techniques for slew rate control and for preslewing the amplifier output that also provide high performance in compact circuit configurations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.