US 11,936,297 B2
DC-DC converter including first and second coils magnetically coupled such that current flows through second coil in forward direction of diode by mutual induction as current flowing through first coil from intermediate terminal to output terminal increases and vehicle
Hiroyuki Hosoi, Kanagawa (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Jan. 27, 2022, as Appl. No. 17/586,295.
Claims priority of application No. 2021-038750 (JP), filed on Mar. 10, 2021.
Prior Publication US 2022/0294345 A1, Sep. 15, 2022
Int. Cl. H02M 3/158 (2006.01); H02M 1/34 (2007.01)
CPC H02M 3/158 (2013.01) [H02M 1/342 (2021.05)] 15 Claims
OG exemplary drawing
 
1. A DC-DC converter that outputs a DC output voltage between a first output terminal and a second output terminal by performing power conversion on a DC input voltage, the DC-DC converter comprising:
a conversion circuit that outputs an intermediate voltage which is obtained by performing power conversion on the input voltage, between a first intermediate terminal and a second intermediate terminal;
a first coil provided between the first intermediate terminal and the first output terminal;
a second coil; and
a diode provided in series with the second coil, wherein
the DC output voltage is applied to the second coil and the diode provided in series, with a polarity in a direction in which a reverse bias is applied to the diode, and
the first coil and the second coil are magnetically coupled such that a current is made flow through the second coil in a forward direction of the diode by mutual induction as a current flowing through the first coil in a direction from the first intermediate terminal to the first output terminal increases.