Galvanically isolated amplifiers and related methods

A method comprising:

• in one of high voltage circuitry and low voltage circuitry that are galvanically isolated from each other by an isolation barrier in a Galvanically Isolated Amplifier (GIA), with the high voltage circuitry having at least two voltage supply rails and the voltage supply rail that is closest to ground potential being at a first potential relative to the ground potential and the low voltage circuitry having at least two voltage supply rails with the voltage supply rail that is closest to the ground potential at a second potential relative to the ground potential, the second potential being smaller than the first potential:
• applying digital Phase Shift Keying (PSK) modulation to a Radio Frequency (RF) carrier to generate a PSK-modulated signal;
• and
• transmitting the PSK-modulated signal across the isolation barrier.

A method comprising:

• in one of high voltage circuitry and low voltage circuitry that are galvanically isolated from each other by an isolation barrier in a Galvanically Isolated Amplifier (GIA), with the high voltage circuitry having at least two voltage supply rails and the voltage supply rail that is closest to ground potential being at a first potential relative to the ground potential and the low voltage circuitry having at least two voltage supply rails with the voltage supply rail that is closest to the ground potential at a second potential relative to the ground potential, the second potential being smaller than the first potential, applying digital Phase Shift Keying (PSK) modulation to a Radio Frequency (RF) carrier based on a test waveform to generate a PSK-modulated test signal;
• applying a voltage transient between the high voltage circuitry and the low voltage circuitry;
• transmitting the PSK-modulated test signal across the isolation barrier;
• measuring an output of the GIA;
• and
• measuring a deviation of the output of the GIA relative to an expected output based on the test waveform.