High voltage driver circuit with fast slow voltage operation
US7746125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jul 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C8/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A high voltage driver circuit for devices such as non-volatile memories, in which a low voltage driver is combined in two different ways with a high voltage driver In one, input-independent embodiment, a low voltage driver (Q7, Q8) is connected directly in parallel with a high voltage driver, thereby providing a high voltage signal path for high voltage operations and a low voltage signal path for low voltage operations. In an alternative, partially input-dependent embodiment, a low voltage driver is connected to the output of a high voltage driver (Q9, Q10), which may comprise a partial level shifter (Q1 B Q6). The output of this low voltage driver (Q9, Q10), which forms the output terminal of the entire stage, has a pull up/pull down transistor (Q11), depending on whether the partial level shifter (Q1 B Q6) is a positive or negative level shifting high voltage driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.