In a non-started-up state of a vehicle, a first power conversion circuit operates to convert a voltage of a second level from a second power supply into a voltage of a third level, a first and a second switches are each controlled to a connection state, the voltage of the second level from the second power supply is supplied to a first load and the first power conversion circuit, the voltage of the second level from the second power supply is supplied to a second load via the first switch, the voltage of the third level from the first power conversion circuit is supplied to the first load, and the voltage of the third level from the first power conversion circuit is supplied to the second load via the second switch.

In a non-started-up state of a vehicle, a first power conversion circuit operates to convert a voltage of a second level from a second power supply into a voltage of a third level, a first and a second switches are each controlled to a connection state, the voltage of the second level from the second power supply is supplied to a first load and the first power conversion circuit, the voltage of the second level from the second power supply is supplied to a second load via the first switch, the voltage of the third level from the first power conversion circuit is supplied to the first load, and the voltage of the third level from the first power conversion circuit is supplied to the second load via the second switch.

An electrified vehicle may include: a main battery and an auxiliary battery; a motor system including a dual inverter connected to the main battery and driving a motor depending on a motor driving mode, and a transfer switch for switching between first and second driving modes included in the motor driving mode; and a charging switch connected between the motor system and the auxiliary battery, and configured to form a boost charging path connected from the auxiliary battery to the main battery through the motor system when the first driving mode switches to a charging mode while driving.

An electrified vehicle may include: a main battery and an auxiliary battery; a motor system including a dual inverter connected to the main battery and driving a motor depending on a motor driving mode, and a transfer switch for switching between first and second driving modes included in the motor driving mode; and a charging switch connected between the motor system and the auxiliary battery, and configured to form a boost charging path connected from the auxiliary battery to the main battery through the motor system when the first driving mode switches to a charging mode while driving.

A discharge control circuit comprises drive circuitry applying to a control terminal of an electronic switch a pulsed discharge signal, and producing pulses in the pulsed discharge signal with a duration that is a function of a voltage applied to the control terminal of the electronic switch sensed at a sensing node. The circuit also comprises a feedback network including a reference generator producing a signal indicative of a reference duration for the pulses in the pulsed discharge signal, and a pulse duration generator coupled to the sensing node to produce a duration signal indicative of the actual duration the pulses in the discharge signal. A pulse duration comparator coupled to the reference generator and the pulse duration generator acts on pulse duration control circuitry to control the duration of the pulses in the pulsed discharge signal applied to the control terminal of the electronic switch.

A discharge control circuit comprises drive circuitry applying to a control terminal of an electronic switch a pulsed discharge signal, and producing pulses in the pulsed discharge signal with a duration that is a function of a voltage applied to the control terminal of the electronic switch sensed at a sensing node. The circuit also comprises a feedback network including a reference generator producing a signal indicative of a reference duration for the pulses in the pulsed discharge signal, and a pulse duration generator coupled to the sensing node to produce a duration signal indicative of the actual duration the pulses in the discharge signal. A pulse duration comparator coupled to the reference generator and the pulse duration generator acts on pulse duration control circuitry to control the duration of the pulses in the pulsed discharge signal applied to the control terminal of the electronic switch.