Patent · US Active

Three rail level shifter

US9893730B1 · kind B1 · utility

4Cited by
5References
20Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 31, 2017
Grant dateFeb 13, 2018
Priority date—
Expiry dateMar 31, 2037

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04L25/49
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

A level shifter generates at least three separate voltage rails. The level shifter features two cross-coupled devices coupled together in parallel by a capacitor. A first stage includes a PMOS cross-coupled device in series with a PMOS cascode circuit that generates an upper voltage rail. A second stage includes a NMOS cross-coupled device in series with a NMOS cascode circuit that generates a lower rail. A third stage includes the PMOS cascode circuit and the NMOS cascode circuit that together are configured to generate a third voltage rail.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.