Wide range core supply compatible level shifter circuit

A method of operating a level shifter circuit, the method comprising:

• cross-coupling first and second dual gate p-channel devices to one another;
• coupling first and second dual gate n-channel devices to corresponding ones of the p-channel devices;
• biasing a secondary gate of each of the n-channel devices by coupling the secondary gate to a primary gate;
• biasing a secondary gate of each of the p-channel devices by coupling the secondary gate to a high voltage supply;
• coupling the first n-channel device to an input of an inverter;
• and
• coupling the second n-channel device to an output of the inverter.

A level shifter circuit, comprising:

• two or more dual gate PMOS FD-SOI transistors each having a first gate coupled to a high supply voltage;
• two or more dual gate NMOS FD-SOI transistors including primary and secondary gates that are coupled together, the NMOS FD-SOI transistors cross-coupled to second gates of the PMOS FD-SOI transistors;
• and
• one or more inverters coupled to a low supply voltage and to the NMOS FD-SOI transistors, such that a high voltage output signal is produced in response to a low voltage input signal.