Circuit to transfer a signal between different voltage domains and corresponding method to transfer a signal

A circuit, comprising:

• a pulse generator;
• a current path coupled between a first floating voltage and a first reference ground, the current path including a current generator coupled through a resistor to the first floating voltage at a first node of the current generator, and the current generator coupled to be controlled by a pulse signal generated by the pulse generator;
• and
• a negative bootstrap circuitry coupled to the current path, the negative bootstrap circuit including a pump capacitor coupled to a second node of the current generator and to the first reference ground and configured to provide a negative voltage at the second node of the current generator based on the pulse signal generated by the pulse generator,
• wherein the current generator is coupled to be controlled by the pulse signal separately from the negative bootstrap circuitry.

A circuit, comprising:

• a current path coupled between a first floating voltage and a first reference ground, the current path including a current generator and a resistor in series;
• and
• a negative bootstrap circuitry coupled to a first node of the current generator, the negative bootstrap circuit including a pump capacitor having a first terminal and a second terminal, the first terminal coupled to the first node of the current generator, the second terminal selectively coupled, through a first inverting buffer, to one of the first reference ground or a first voltage supply,
• wherein the current generator is coupled to be controlled by a pulse signal separately from the negative bootstrap circuitry.