Switching power supply device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsAkitaka Yoshikawa, Tatehiko Inoue, Hisazumi Watanabe
Life of this patent
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Abstract
The present disclosure reduces parasitic inductances of current paths between components. First conductor path is provided on a surface of insulating layer. One of a power supply voltage and a ground voltage is applied to first conductor path. Second conductor path is provided on the surface of insulating layer. The other of the power supply voltage and the ground voltage is applied to second conductor path. First switching element is connected to output pattern and to first conductor path. Second switching element is connected to output pattern and to second conductor path. At least one of first conductor path and second conductor path has a continuous annular path.
Claims16
A switching power supply device, comprising:
- a substrate including an insulating layer and a conductive layer, the conductive layer being on one surface of the insulating layer and provided with an output pattern;
- a first conductor path provided on the one surface of the insulating layer, the first conductor path being applied with one of a power supply voltage and a ground voltage;
- a second conductor path provided on the one surface of the insulating layer, the second conductor path being applied with another of the power supply voltage and the ground voltage;
- a first switching element connected to the output pattern and to the first conductor path;
- and
- a second switching element connected to the output pattern and to the second conductor path,
- wherein at least one of the first conductor path and the second conductor path has a continuous annular path, with the continuous annular path completely and continuously surrounding the output pattern.
Dependencies are inferred from the claim text.