Circuit and method for ultra-high-voltage to low-voltage level shifting
US10680614B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2019 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Sep 12, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/012
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present document describes a level-shifter circuit and method to transmit data from a high-voltage domain to a low-voltage domain. The level-shifter circuit has a first current path with a first current control unit to set a first current based on a high-voltage data signal in the high-voltage domain; and a second current path with a second current control unit to set a second current based on the high-voltage data signal. Furthermore, the circuit has an isolation unit to transfer the first current and the second current from the high-voltage domain to the low-voltage domain; and a current comparator unit to compare the first current with the second current to provide a low-voltage data signal in the low-voltage domain, which corresponds to the high-voltage data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.