Low voltage isolation switch, in particular for a transmission channel for ultrasound applications
US8791727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2013 |
| Grant date | Jul 29, 2014 |
| Priority date | — |
| Expiry date | May 31, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low voltage isolation switch is suitable for receiving from a connection node a high voltage signal and transmitting said high voltage signal to a load via a connection terminal. The isolation switch includes a driving block connected between first and second voltage reference terminals and including a first driving transistor coupled between the first voltage reference (Vss) and a first driving circuit node and a second driving transistor coupled between the driving circuit node and the second supply voltage reference. The switch comprises an isolation block connected to the connection terminal (pzt), the connection node, and the driving central circuit node and including a voltage limiter block, a diode block and a control transistor. The control transistor is connected across the diode block between the connection node and the connection terminal and has a control terminal connected to the driving central circuit node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.