Multilayer printed circuit board with switching power supply capacitors, broad patterns, and TT-type filter
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United States of America Patent
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May 8, 2018
Issued Date -
N/A
app pub date -
Apr 21, 2014
filing date -
Apr 21, 2014
priority date (Note) -
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Abstract
A multilayer printed circuit board includes a plurality of wire layers and mounted with a switching power supply, wherein at least three broad patterns, which are formed on at least three wire layers, and a via for connecting the at least three broad patterns are provided to a power supply path connecting a connector, which is to be connected to an external power supply, and the switching power supply, a first capacitor is connected to the connector-side broad pattern, a second capacitor is connected to the switching power supply-side broad pattern, and a π-type filter is configured with parasitic inductance, which is generated by the at least three broad patterns and the via, the first capacitor, and the second capacitor.
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