Title:
SWITCHING POWER SUPPLY DEVICE AND VEHICLE-MOUNTED ELECTRIC COMPRESSOR EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2020/012898
Kind Code:
A1
Abstract:
[Problem] To provide a switching power supply device in which EMI noise can be effectively reduced. [Solution] This switching power supply device 9 supplies power to a control circuit 6 by switching a low-voltage power supply 12, said control circuit 6 controlling a vehicle-mounted electric compressor 1 which is driven by a high-voltage power supply 11. The switching power supply device 9 is provided with a switching transformer 15 having a primary winding 13 on the low-voltage power supply side and a secondary winding 14 on the high-voltage power supply side, and isolating the low-voltage power supply side and the high-voltage power supply side from each other, wherein the power supply positive side 13B of the primary winding and the ground side 24B of the secondary winding of the switching transformer are coupled through a coupling capacitor 42.
Inventors:
YOSHIDA HIROSHI (JP)
KANAI TAKASHI (JP)
TAKADA KOHEI (JP)
KANAI TAKASHI (JP)
TAKADA KOHEI (JP)
Application Number:
PCT/JP2019/024244
Publication Date:
January 16, 2020
Filing Date:
June 19, 2019
Export Citation:
Assignee:
SANDEN AUTOMOTIVE COMPONENTS CORP (JP)
International Classes:
H02M3/28; B60H1/32; H02M7/48
Foreign References:
| JPH08266054A | 1996-10-11 | |||
| JP2017184391A | 2017-10-05 | |||
| JPH08275534A | 1996-10-18 | |||
| JPH08294275A | 1996-11-05 |
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