MCU with integrated voltage isolator and integrated galvanically isolated asynchronous serial data link
US7821428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Mar 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/19041
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An integrated circuit comprises a first microcontroller unit for executing instructions in accordance with a first clock frequency. The microcontroller located on a first die and includes a first processing core for providing a parallel stream of data in accordance with the first clock frequency. A second microcontroller unit executes instructions in accordance with the first clock frequency. The second microcontroller is located on a second die and includes a second processing core for receiving the parallel stream of data in accordance with the first clock frequency. Capacitive isolation circuitry connected with the first microcontroller unit and the second microcontroller unit provides a high voltage isolation link between the first and the second microcontroller units. The capacitive isolation circuitry distributing a first portion of a high voltage isolation signal across a first group of capacitors associated with the first microcontroller unit and distributes a second portion of the high voltage isolation signal across a second group of capacitors associated with the second microcontroller unit. The capacitive isolation circuitry further transmits data from the parallel data…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.