Semiconductor switch arrangement and an electronic device
US7916439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2005 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | May 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0822
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A semiconductor switch arrangement comprises a bipolar transistor and a semiconductor power switch having an input node, an output node and a control node for allowing a current path to be formed between the input node and the output node. The bipolar transistor is coupled between the input node and the control node such that upon receiving an electro-static discharge pulse the bipolar transistor allows a current to flow from the input node to the control node upon a predetermined voltage being exceeded at the input node to allow the control node to cause a current to flow from the input node to the output node. Thus, the bipolar transistor device protects the semiconductor switch device, such as an LDMOS device, against ESD, namely protection against power surges of, say, several amperes in less than 1 usec.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.