Power unit for delivering coherent sine burst irreversible electroporation energy to a biological tissue

A power unit for supplying electric energy to at least one electrode of an electronic apparatus for delivering Coherent Sine Burst Irreversible Electroporation energy, the power unit including at least one power module configured to generate an electric signal (S) to energize one or more respective electrodes, each power module comprising:

• a selecting block configured to receive at least one square wave input signal, wherein the selecting block is configured to continuously change an electric energy level associated with said electric signal (S) based on the at least one square wave input signal in order to provide a combined signal at an output of the selecting block, and wherein the combined signal comprises a square wave waveform;
• and
• a filtering and electrical isolation block configured to convert the combined signal into a sine wave signal and to filter the sine wave signal to generate the electric signal (S), wherein the conversion and filtering are electrically isolated from one another;
• wherein the selecting block comprises an H-Bridge circuit and a charging capacitor, the charging capacitor having a first node coupled between a power supply terminal that is couplable to a second power supply voltage source and a ground terminal that is couplable to ground, the charging capacitor is configured to be selectively discharged via the H-Bridge circuit based on the at least one square wave input signal, and the selective discharging of the charging capacitor is configured to provide the combined signal at the output of the selecting block.