Voltage converter comprising: - a resonant converter circuit configured to exhibit at least one chopping frequency; - a regulation circuit for regulating the input voltage of the resonant converter circuit, said regulation circuit being configured to control the output voltage of the resonant converter circuit by modifying the voltage delivered to the resonant converter circuit, the chopping frequency remaining constant; and - a circuit intended to implement: - a first loop so as to servocontrol a current setpoint (I2cons) of the regulation circuit to a difference between the value (Vout_mes) of the output voltage of the resonant converter circuit and an output voltage setpoint (V*) of the resonant converter circuit, the current setpoint (I2cons) being such that the regulation circuit delivers, to the resonant converter circuit, an input voltage value corresponding to a respective output voltage value of the resonant converter circuit, and - a second loop so as to servocontrol the current of the regulation circuit to a difference between the value (I2mes) of said current and the current setpoint (I2cons), the regulation circuit comprising two switches (M21, M22) in series, namely a high-side switch, connected to a high-side terminal of the voltage converter, and a low-side switch, connected to a low-side terminal of the voltage converter; and the resonant converter circuit having a low-side terminal shared with the low-side terminal of the voltage converter, the voltage converter comprising an inductor having a first terminal connected to the midpoint of the two switches (M21, M22), and a second terminal connected to a high-side terminal of the resonant converter circuit, and the voltage converter comprising a filter and a resistor connected on the one hand to the low-side terminal of the voltage converter and on the other hand to a ground of the voltage converter, the first loop being implemented so as to servocontrol the current flowing through the resistor and the filter being implemented so as to filter the measurement across the terminals of the resistor, the high-side terminal of the voltage converter and the ground of the voltage converter forming input terminals of the voltage converter. - a resonant converter circuit configured to exhibit at least one chopping frequency; - a regulation circuit for regulating the input voltage of the resonant converter circuit, said regulation circuit being configured to control the output voltage of the resonant converter circuit by modifying the voltage delivered to the resonant converter circuit, the chopping frequency remaining constant; and - a circuit intended to implement: - a first loop so as to servocontrol a current setpoint (I2cons) of the regulation circuit to a difference between the value (Vout_mes) of the output voltage of the resonant converter circuit and an output voltage setpoint (V*) of the resonant converter circuit, the current setpoint (I2cons) being such that the regulation circuit delivers, to the resonant converter circuit, an input voltage value corresponding to a respective output voltage value of the resonant converter circuit, and - a second loop so as to servocontrol the current of the regulation circuit to a difference between the value (I2mes) of said current and the current setpoint (I2cons), the regulation circuit comprising two switches (M21, M22) in series, namely a high-side switch, connected to a high-side terminal of the voltage converter, and a low-side switch, connected to a low-side terminal of the voltage converter; and - a first loop so as to servocontrol a current setpoint (I2cons) of the regulation circuit to a difference between the value (Vout_mes) of the output voltage of the resonant converter circuit and an output voltage setpoint (V*) of the resonant converter circuit, the current setpoint (I2cons) being such that the regulation circuit delivers, to the resonant converter circuit, an input voltage value corresponding to a respective output voltage value of the resonant converter circuit, and - a second loop so as to servocontrol the current of the regulation circuit to a difference between the value (I2mes) of said current and the current setpoint (I2cons), the regulation circuit comprising two switches (M21, M22) in series, namely a high-side switch, connected to a high-side terminal of the voltage converter, and a low-side switch, connected to a low-side terminal of the voltage converter; and the resonant converter circuit having a low-side terminal shared with the low-side terminal of the voltage converter, the voltage converter comprising an inductor having a first terminal connected to the midpoint of the two switches (M21, M22), and a second terminal connected to a high-side terminal of the resonant converter circuit, and the voltage converter comprising a filter and a resistor connected on the one hand to the low-side terminal of the voltage converter and on the other hand to a ground of the voltage converter, the first loop being implemented so as to servocontrol the current flowing through the resistor and the filter being implemented so as to filter the measurement across the terminals of the resistor, the high-side terminal of the voltage converter and the ground of the voltage converter forming input terminals of the voltage converter.