Switching power supply device
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsJUNICHI YUKAWA, YOSHIHIKO MAEDA, SATOSHI OKAWA
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Abstract
The present disclosure reduces heat concentration on switching elements. A plurality of high-side transistors are connected in parallel to constitute high-side switching element. A plurality of low-side transistors are connected in parallel to constitute low-side switching element. The plurality of high-side transistors are arranged, one by one, next to the plurality of low-side transistors.
Claims14
A switching power supply device including a high-side switching element and a low-side switching element connected in series to the high-side switching element;
- the switching power supply device comprising:
- a substrate having an insulating layer and a conductive layer, the conductive layer being provided on one surface of the insulating layer;
- a plurality of high-side transistors provided in the conductive layer, the high-side transistors being connected in parallel to constitute the high-side switching element;
- and
- a plurality of low-side transistors provided in the conductive layer, the low-side transistors being connected in parallel to constitute the low-side switching element,
- wherein the plurality of high-side transistors are arranged, one by one, next to the plurality of low-side transistors.
A switching power supply device including:
- a high-side switching element and;
- a low-side switching element connected in series to the high-side switching element;
- the switching power supply device comprising:
- a substrate having an insulating layer and a conductive layer, the conductive layer being provided on one surface of the insulating layer;
- high-side transistors provided in the conductive layer, the high-side transistors being connected in parallel to constitute the high-side switching element;
- low-side transistors provided in the conductive layer, the low-side transistors being connected in parallel to constitute the low-side switching element;
- and
- a smoothing capacitor section provided in the conductive layer,
- wherein the smoothing capacitor section has a plurality of capacitors provided in the conductive layer, the plurality of capacitors corresponding to the high-side transistor and the low-side transistor, and
- the high-side transistors, the low-side transistors, and the plurality of capacitors are disposed such that a pair including the high-side transistor and a corresponding capacitor of the plurality of capacitors are positioned next to a pair including the low-side transistor and a corresponding capacitor of the plurality of capacitors.
Dependencies are inferred from the claim text.