US Patent No. 10,798,818

POWER SUPPLIES INCLUDING SHIELDED MULTILAYER POWER TRANSMISSION BOARDS


Patent No. 10,798,818
Issue Date October 06, 2020
Title Power Supplies Including Shielded Multilayer Power Transmission Boards
Inventorship Prabou Ranganathan, Eden Prairie, MN (US)
Norman Oliva, Eden Prairie, MN (US)
Assignee Astec International Limited, Kowloon (HK)

Claim of US Patent No. 10,798,818

1. A power supply comprising:a main circuit board including an AC power input connector having a neutral power connection and a line power connection; and
a multilayer power transmission board for transmitting AC power from one area of the main circuit board to another area of the main circuit board, the multilayer board including at least two conductive neutral layers electrically coupled to the neutral power connection of the AC power input connector, at least two conductive line layers electrically coupled to the line power connection of the AC power input connector, and a dielectric medium positioned between each of the conductive neutral layers and the conductive line layers, the conductive neutral layers and the conductive line layers positioned in an alternating configuration, and one or more X-capacitances formed between at least one of the conductive neutral layers and at least one of the conductive line layers to suppress noise in the power supply when AC power is transmitted from said one area of the main circuit board to said other area of the main circuit board.