Patent ID: 9231468
Filing Date: 2016-01-05
CPC Classification: H02M,Y02B

Claim Text:
1. An interleaved converter that is configured by connecting in parallel a plurality of switching converter circuits configured by a plurality of inductors, a plurality of switching elements, and a plurality of diodes, that rectify, with a rectifier circuit, an alternating-current voltage supplied from an alternating-current power supply, and that switch, with the switching elements, an output voltage of the rectifier circuit via the inductors to perform one or both of power factor improvement and a boosting operation and to supply electric power to a load, the interleaved converter comprising: an inter-inductor switch that makes it possible to select whether first and second inductors are connected in series; an input side switch that is connected to a connection point of the first inductor and the inter-inductor switch and makes it possible to select whether electric power is supplied from the rectifier circuit to a power supply side of the first inductor; an output side switch that is connected to a connection point of the second inductor and the inter-inductor switch and makes it possible to select whether electric power is supplied from the inductor to a diode side of the second inductor; and a control circuit that controls the inter-inductor switch, the input side switch, and the output side switch, wherein the control circuit wherein, as a condition for switching the operation mode, the control circuit sets a first load power threshold for shifting the operation mode from the high-load operation mode to the low-load operation mode to a value lower than a second load power threshold for shifting the operation mode from the low-load operation mode to the high-load operation mode.