High voltage output stage
US11183976B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2019 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Dec 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/30117
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier circuit includes a high-voltage output stage. The high-voltage output stage includes an output terminal, a high-side output circuit, a low-side output circuit, and a feedback circuit. The high-side output circuit sources current to the output terminal, and includes a high-side input transistor, a first high-side cascode transistor coupled to the high-side input transistor, and a second high-side cascode transistor coupled to the first high-side cascode transistor and the output terminal. The low-side output circuit sinks current from the output terminal, and includes a low-side input transistor, a first low-side cascode transistor coupled to the low-side input transistor, and a second low-side cascode transistor coupled to the first low-side cascode transistor and the output terminal. The feedback circuit is configured to bias the second high-side cascode transistor and the second low-side cascode transistor based on a sense voltage generated by the high-side output circuit or the low-side output circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.