High-voltage inverter amplifier device
US6864736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2003 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/356113
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An intermediate stage of a high-voltage inverting amplifier includes a drive transistor (MB5) of the thin-gate-oxide high-voltage MOS type connected between a supply terminal and the gate of an output transistor (M28). At least one first diode (DB) is included in the intermediate stage, wherein the cathode of that diode is connected to the gate of the drive transistor and the anode is connected to a level transposition stage of the amplifier. A control circuit is connected to the gate of the drive transistor so as to enable it to conduct when an initially zero supply voltage reaches the threshold voltage of the drive transistor. This causes the output transistor to conduct more quickly with increased supply voltage than would be experienced with prior art designs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.