Cascade switch device and voltage protection method
US9973185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2015 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Feb 27, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/6875
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A cascode switch device includes a cascode circuit, which includes a first switch and a second switch, and a protection circuit. The protection circuit is coupled between the first switch and the second switch. A first leakage current passing through the protection circuit is greater than or equal to a difference between a second leakage current and a third leakage current, and is smaller than an upper limit value of a leakage current of the cascode circuit. An upper limit value of a withstanding voltage is present between the first terminal and the control terminal of the first switch. When the first switch operates at the upper limit value of the withstanding voltage, the second leakage current is an upper limit value of a leakage current passing through the first switch, and the third leakage current is a lower limit value of a leakage current passing through the second switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.