A circuit comprising: a power supply having a positive supply terminal and a negative supply terminal; a first switching element having a first current-carrying electrode and a second current-carrying electrode, wherein the first current-carrying electrode is coupled to the positive supply terminal; a second switching element having a first current-carrying electrode and a second current-carrying electrode, wherein the first current-carrying electrode of the second switching element is coupled to the second current-carrying electrode of the first switching element and the second current-carrying electrode of the second switching element is coupled to the negative supply terminal; a first rectifying element having an anode and a cathode, wherein the anode of the first rectifying element is coupled to the second current-carrying electrode of the first switching element, and the cathode of the first rectifying element is coupled to the first current-carrying electrode of the first switching element; a second rectifying element having an anode and a cathode, wherein the anode of the second rectifying element is coupled to the second current-carrying electrode of the second switching element, and the cathode of the second rectifying element is coupled to the first current-carrying electrode of the second switching element; a first charge storage element having a first terminal and a second terminal, wherein the first terminal of the first charge storage element is coupled to the cathode of the first rectifying element, and the second terminal of the first charge storage element is coupled to the second current-carrying electrode of the second switching element; and a second charge storage element having a first terminal and a second terminal, wherein the first terminal of the second charge storage element is coupled to the first current-carrying electrode of the first switching element, and wherein the second terminal of the second charge storage element is coupled to the anode of the second rectifying element; characterised in that the first rectifying element and the first charge storage element are physically located closer to the second switching element than to the positive supply terminal of the power supply; and the second rectifying element and the second charge storage element are physically located closer to the first switching element than to the negative supply terminal of the power supply. a power supply having a positive supply terminal and a negative supply terminal; a first switching element having a first current-carrying electrode and a second current-carrying electrode, wherein the first current-carrying electrode is coupled to the positive supply terminal; a second switching element having a first current-carrying electrode and a second current-carrying electrode, wherein the first current-carrying electrode of the second switching element is coupled to the second current-carrying electrode of the first switching element and the second current-carrying electrode of the second switching element is coupled to the negative supply terminal; a first rectifying element having an anode and a cathode, wherein the anode of the first rectifying element is coupled to the second current-carrying electrode of the first switching element, and the cathode of the first rectifying element is coupled to the first current-carrying electrode of the first switching element; a second rectifying element having an anode and a cathode, wherein the anode of the second rectifying element is coupled to the second current-carrying electrode of the second switching element, and the cathode of the second rectifying element is coupled to the first current-carrying electrode of the second switching element; a first charge storage element having a first terminal and a second terminal, wherein the first terminal of the first charge storage element is coupled to the cathode of the first rectifying element, and the second terminal of the first charge storage element is coupled to the second current-carrying electrode of the second switching element; and a second charge storage element having a first terminal and a second terminal, wherein the first terminal of the second charge storage element is coupled to the first current-carrying electrode of the first switching element, and wherein the second terminal of the second charge storage element is coupled to the anode of the second rectifying element; characterised in that the first rectifying element and the first charge storage element are physically located closer to the second switching element than to the positive supply terminal of the power supply; and the second rectifying element and the second charge storage element are physically located closer to the first switching element than to the negative supply terminal of the power supply.