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