IP Library Granted Patent US 11,838,021
Granted Patent B1
US 11,838,021 · App. 17/229,277 · Granted Dec 5, 2023

SiC jfet logic output level-shifting using integrated-series forward-biased jfet gate-to-channel diode junctions

Inventors: Matthew Barlow (Springdale, AR); James A. Holmes (Fayetteville, AR)
H03K19/09403H03K19/09H03K19/09425
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Quick Facts
Patent No.
US 11,838,021
App. No.
17/229,277
Granted
Dec 5, 2023
Kind
B1
Abstract

An improved electrical circuit for logic output level shifting using SiC JFETs with resistors on the input, inverting, stage and using diode degenerated JFET sources in the output stage.

Claims (18)

1. A silicon carbide junction field effect transistor logic output level shifting circuit comprising:

an input stage including a resistor:

a first resistorless output path including a first junction field effect transistor with a first gate, first drain, and first source, the first gate connected to the resistor; and

a level shifting diode connected to the first source wherein the resistor and the level shifting diode provide compensating temperature sensitivities.

2. The circuit of claim 1 further comprising:

a second resistorless output path including a second junction field effect transistor with a second gate, second drain, and second source;

two series connected level shifting diodes connected the second source.

3. The circuit of claim 2 further comprising:

a third resistorless output path including a third junction field effect transistor with a third gate, third drain, and third source:

three series connected level shifting diodes connected the third source.

4. The circuit of claim 3 further comprising:

a fourth resistorless output path including a fourth junction field effect transistor with a fourth gate, fourth drain, and fourth source;

four series connected level shifting diodes connected the fourth source.

5. A silicon carbide junction field effect transistor logic output level shifting circuit with an output stage, the circuit comprising:

a resistive input stage:

a resistorless output path including a diode degenerated junction field effect transistor with a source connected to the output stage wherein the resistive input stage and the diode degenerated junction field effect transistor provide compensating temperature sensitivities.

6. The circuit of claim 5 , further comprising:

the input stage including a signal inverter.

Assignments (1)
CONFIRMATORY LICENSE Recorded Jun 25, 2024
From: OZARK INTEGRATED CIRCUITS, INC
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 067838/0302 →
Continuity (3)
Continuation In Part 16793652 · Feb 18, 2020
Continuation In Part 16183130 · Nov 7, 2018
Provisional Application 62582757 · Nov 7, 2017