Level shifter
US12334920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2023 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Jan 29, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/018521
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A level shifter includes a level shifting circuit and a voltage tracking circuit. The level shifting circuit receives an input signal through an input terminal and converts the input signal from a first power domain to a second power domain to generate an output signal at an output terminal. The voltage tracking circuit is coupled to first and second voltage terminals, and tracks one with a lower level among voltages of the first and second voltage terminals to generate a control voltage. The level shifting circuit includes first and second N-type transistors. The first N-type transistor has a gate coupled to the input terminal, a drain coupled to a first node, and a source coupled to a ground. The second N-type transistor has a gate receiving the control voltage, a drain coupled to the output terminal at a second node, and a source coupled to the input terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.