A method, comprising: - providing a load capacitance (C L) having a charge node; - providing a set of energy storage capacitances (C 1, C 2), having respective charge nodes (101, 102); - providing electronic switch circuitry configured to be made selectively conductive to couple the charge node of the load capacitance (C L) to respective charge nodes (101, 102) of energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2), wherein the electronic switch circuitry comprise a switched current path (T, L) through a first transistor (TT 1) and a second transistor (TT 2) including junction diodes (BD1, BD2), wherein the first transistor (TT 1) has a current path therethrough between a first common node and the respective charge node of an energy storage capacitance (C 1) in the set of energy storage capacitances (C 1, C 2) and the second transistor (TT 2) has a current path therethrough between the first common node and the charge node of the load capacitance (C L), the first transistor (TT 1) and the second transistor (TT 2) having control terminals mutually coupled at a second common node, the control terminals having a parasitic capacitance (C P), wherein the method comprises pre-charging the parasitic capacitance (C P) of the control terminals of the first transistor (TT 1) and the second transistor (TT 2) mutually coupled at the second common node prior to making conductive the switched current path (T, L) through the first transistor (TT 1) and the second transistor (TT 2), the method comprising providing at the charge node of the load capacitance (C L) a drive voltage signal (V L) comprising a sequence of rising and falling edges between a supply voltage at a voltage supply node and ground, wherein: - a) at said rising edges, the charge node of the load capacitance (C L) is subsequently coupled, in an ordered sequence: - to ground, - to respective charge nodes (101, 102) of the energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2) to receive charge therefrom, and - to said voltage supply node, and - b) at said falling edges, the charge node of the load capacitance (C L) is subsequently coupled, in an ordered sequence: - to said voltage supply node, - to respective charge nodes (101, 102) of energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2) to transfer charge thereto, and - to ground. - providing a load capacitance (C L) having a charge node; - providing a set of energy storage capacitances (C 1, C 2), having respective charge nodes (101, 102); - providing electronic switch circuitry configured to be made selectively conductive to couple the charge node of the load capacitance (C L) to respective charge nodes (101, 102) of energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2), wherein the electronic switch circuitry comprise a switched current path (T, L) through a first transistor (TT 1) and a second transistor (TT 2) including junction diodes (BD1, BD2), wherein the first transistor (TT 1) has a current path therethrough between a first common node and the respective charge node of an energy storage capacitance (C 1) in the set of energy storage capacitances (C 1, C 2) and the second transistor (TT 2) has a current path therethrough between the first common node and the charge node of the load capacitance (C L), the first transistor (TT 1) and the second transistor (TT 2) having control terminals mutually coupled at a second common node, the control terminals having a parasitic capacitance (C P), wherein the method comprises pre-charging the parasitic capacitance (C P) of the control terminals of the first transistor (TT 1) and the second transistor (TT 2) mutually coupled at the second common node prior to making conductive the switched current path (T, L) through the first transistor (TT 1) and the second transistor (TT 2), the method comprising providing at the charge node of the load capacitance (C L) a drive voltage signal (V L) comprising a sequence of rising and falling edges between a supply voltage at a voltage supply node and ground, wherein: - a) at said rising edges, the charge node of the load capacitance (C L) is subsequently coupled, in an ordered sequence: - to ground, - to respective charge nodes (101, 102) of the energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2) to receive charge therefrom, and - to said voltage supply node, and - b) at said falling edges, the charge node of the load capacitance (C L) is subsequently coupled, in an ordered sequence: - to said voltage supply node, - to respective charge nodes (101, 102) of energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2) to transfer charge thereto, and - to ground. - a) at said rising edges, the charge node of the load capacitance (C L) is subsequently coupled, in an ordered sequence: - to ground, - to respective charge nodes (101, 102) of the energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2) to receive charge therefrom, and - to said voltage supply node, and - b) at said falling edges, the charge node of the load capacitance (C L) is subsequently coupled, in an ordered sequence: - to said voltage supply node, - to respective charge nodes (101, 102) of energy storage capacitances (C 1, C 2) in the set of energy storage capacitances (C 1, C 2) to transfer charge thereto, and - to ground.