Abstract: A charger includes a rectifier, a DC/DC converter, and a power ripple absorption circuit including, wherein a first diode is connected between an inductor of the power ripple absorption circuit and the rectifier, a second diode is connected between the inductor and the rectifier, a capacitor and a first switch are connected in series between a first line and a second line, a third diode is connected between a line connecting the capacitor and the first switch and the inductor, a second switch is connected between a line connecting the inductor and the third diode and the second line, and wherein a summation of a power output from the alternating current power supply and a power output from the capacitor is controlled to become constant, and the first switch is kept ON in a discharge period in which an instantaneous power is lower than an average power.

Abstract: A charger is configured such that in case where control of switching of a DC/DC converter includes a first mode and a second mode, a dead time is provided between the first mode and the second mode when switching from the first mode to the second mode and a first switch of a power pulsation absorbing circuit is controlled to be in an off-state during a time until expiration of a predetermined time after start of the dead time, wherein in the first mode, at least one switch of switches of the DC/DC converter is switched on, at least one switch of the switches of the DC/DC converter is switched off, and the first switch of the power pulsation absorbing circuit is switched off, and wherein in the second mode, the switch of the DC/DC converter which is switched off in the first mode is switched on, and the first switch of the power pulsation absorbing circuit is switched on.

Abstract: A charger is configured such that when an output power value of a DC/DC converter is smaller than a first power value, a switch of the DC/DC converter and a first switch of a power pulsation absorbing circuit are controlled according to a discontinuous current mode during one entire period of an AC voltage inputted from a AC power supply; and wherein when the output power value of the DC/DC converter is equal to or greater than a second power value, the switch of the DC/DC converter and the first switch of the power pulsation absorbing circuit are controlled according to a continuous current mode during one entire period of the AC voltage.

Abstract: The control of the switches S21 to S28 of the DC/DC converter 120 includes a first mode in which all of the switches S21 to S28 of the DC/DC converter 120 are OFF and a plurality of second modes in which at least one of the switches S21 to S28 of the DC/DC converter 120 is ON, and when switching from the first mode to one of the plurality of second modes, a dead time Td is not provided between the first mode and the one of the plurality of second modes.

Abstract: A charger includes: a rectifier including input terminals, a cathode terminal and an anode terminal, wherein the input terminals are configured for connection to an AC power supply; a DC/DC converter including a first terminal, a second terminal and output terminals, the first terminal being configured to be connected to the cathode terminal of the rectifier, the second terminal being configured to be connected to the anode terminal of the rectifier, wherein the output terminals are configured for connection to a battery; and a power pulsation absorbing circuit including a first to third diodes, an inductor, a capacitor, a first switch and a second switch, wherein the DC/DC converter, the first and second switch are controlled to obtain a constant sum of a power outputted from the AC power supply and a power outputted from the capacitor during increasing a voltage outputted from the AC power supply.

Abstract: A vehicular power supply system is provided with: a power supply control unit for supplying a power packet from a power packet mixer to power packet routers in response to a power distribution request from the power packet routers; and an allocation unit for allocating priorities to a plurality of loads. The power supply control unit restricts power supply to a load having a low priority when the demand-supply relationship of power satisfies a predetermined condition.