High voltage start-up circuit with adjustable start-up time
US9431892B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2015 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Dec 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/36
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high voltage start-up circuit with adjustable start-up time, wherein, the drain electrode of the first NMOS transistor is connected with a first terminal of the first resistor, a gate electrode of the second NMOS transistor and a negative terminal of the diode; a source electrode of the first NMOS transistor, together with a positive terminal of the diode, is connected to the power ground; a drain electrode of the second NMOS transistor, together with a second terminal of the first resistor, is connected with a port SW of a chip; a source electrode of the second NMOS transistor, together with a first terminal of the second resistor, is connected with a power port VDD of the chip. The circuit can adjust the start-up time and the restart time of the chip flexibly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.