A resonant power converter (100, 200, 300, 400) comprising: an input terminal for receipt of an input voltage (V IN), a switching network comprising a first MOSFET switch or IGBT switch (S 1, S 2) controlled by a respective gate terminal, the switching network comprising a switch input (V DS) operatively coupled to the input terminal for receipt of the input voltage (V IN) and a switch output (V DS) operatively coupled to an input of a resonant network (108, 110, 112) of the resonant power converter, the resonant network (108, 110, 112), which defines a predetermined resonance frequency (f R) and comprises an output operatively coupled to a converter output terminal (V OUT), a self-oscillating feedback loop coupled to the switch output (V DS) and to the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network to set a switching frequency of the power converter; the self-oscillating feedback loop comprising: a first intrinsic gate-drain capacitance (C GD) of the MOSFET switch, or a first intrinsic gate-collector capacitance of the IGBT switch, coupled between the switch output (V DS) and the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network, a first bias voltage source configured to generate a first adjustable bias voltage (V Bias), a first inductor (L G) with substantially fixed inductance coupled in-between the first bias voltage source and the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network, characterised by: a voltage regulation loop configured to control an output voltage of the power converter by controlling the first adjustable bias voltage (V Bias) applied to the first inductor (L G). an input terminal for receipt of an input voltage (V IN), a switching network comprising a first MOSFET switch or IGBT switch (S 1, S 2) controlled by a respective gate terminal, the switching network comprising a switch input (V DS) operatively coupled to the input terminal for receipt of the input voltage (V IN) and a switch output (V DS) operatively coupled to an input of a resonant network (108, 110, 112) of the resonant power converter, the resonant network (108, 110, 112), which defines a predetermined resonance frequency (f R) and comprises an output operatively coupled to a converter output terminal (V OUT), a self-oscillating feedback loop coupled to the switch output (V DS) and to the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network to set a switching frequency of the power converter; the self-oscillating feedback loop comprising: a first intrinsic gate-drain capacitance (C GD) of the MOSFET switch, or a first intrinsic gate-collector capacitance of the IGBT switch, coupled between the switch output (V DS) and the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network, a first bias voltage source configured to generate a first adjustable bias voltage (V Bias), a first inductor (L G) with substantially fixed inductance coupled in-between the first bias voltage source and the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network, characterised by: a voltage regulation loop configured to control an output voltage of the power converter by controlling the first adjustable bias voltage (V Bias) applied to the first inductor (L G). a first intrinsic gate-drain capacitance (C GD) of the MOSFET switch, or a first intrinsic gate-collector capacitance of the IGBT switch, coupled between the switch output (V DS) and the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network, a first bias voltage source configured to generate a first adjustable bias voltage (V Bias), a first inductor (L G) with substantially fixed inductance coupled in-between the first bias voltage source and the gate terminal (V GS) of the first MOSFET switch or IGBT switch (S 1, S 2) of the switching network, characterised by: a voltage regulation loop configured to control an output voltage of the power converter by controlling the first adjustable bias voltage (V Bias) applied to the first inductor (L G).