Capacitive isolation circuitry
US8198951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Feb 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/689
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
An integrated circuit having voltage isolation capabilities includes a plurality of communications channels for transceiving data from the integrated circuit. Each of the communications channel includes capacitive isolation circuitry located in conductive layers of the integrated circuit for providing a high voltage isolation link. The capacitive isolation circuitry distributes a first portion of a high voltage isolation signal across a first group of capacitors on a first link and a second link in the capacitive isolation circuitry and distributes a second portion of the high voltage isolation signal across a second group of capacitors in the first link and the second link in the capacitive isolation circuitry. A differential receiver on each of the plurality of communications channels receives the data on the first link and the second link. A differential transmitter on each of the plurality of communications channels transmits the data on the first link at a selected one of a first phase and a second phase and for transmitting the data on the second link at the selected one of the first phase and the second phase. The second phase is 180 degrees out of phase with the first phase…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.