POWER SUPPLY BOARD

• US 20160192489A1
• Filed: 12/08/2015
• Published: 06/30/2016
• Est. Priority Date: 12/24/2014
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: KANAI, Yuki, IMAMOTO, Takashi
• Granted Patent: US 10,331,161 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/00 Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00 architectures of general purpose stored program computers G06F15/76
• CPC Class Codes: G06F 1/189 Power distribution
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: H05K 1/0265 characterized by the lay-out of or details of the printed conductors, e.g. reinforced conductors, redundant conductors, conductors having different cross-sections
• CPC Class Codes: H05K 1/113 Via provided in pad; Pad over filled via
• CPC Class Codes: H05K 1/141 One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters H05K1/142 and H05K1/147 take precedence
• CPC Class Codes: H05K 1/144 Stacked arrangements of planar printed circuit boards
• CPC Class Codes: H05K 2201/042 Stacked spaced PCBs; Planar parts of folded flexible circuits having mounted components in between or spaced from each other
• CPC Class Codes: H05K 2201/09309 Core having two or more power planes; Capacitive laminate of two power planes
• CPC Class Codes: H05K 2201/0979 Redundant conductors or connections, i.e. more than one current path between two points
• CPC Class Codes: H05K 2201/10242 Metallic cylinders
• CPC Class Codes: H05K 2201/10303 Pin-in-hole mounted pins

Abstract

A power supply board includes: a first board including a top surface on which a processor is capable of being mounted, a bottom surface located on an opposite side of the top surface, and a plurality of first through holes and a plurality of second through holes capable of being electrically connected with the processor by penetrating through the first board from the top surface to the bottom surface; a second board arranged at a position distant from the bottom surface of the first board and provided with a power supply device; a first conductor mounted on the bottom surface of the first board and electrically connects the plurality of first through holes and the power supply device, and a second conductor mounted on the bottom surface of the first board and electrically connects the plurality of second through holes and the power supply device.

Claims

1. A power supply board comprising:

a first board including a top surface on which a processor is capable of being mounted, a bottom surface located on an opposite side of the top surface, and a plurality of first through holes and a plurality of second through holes capable of being electrically connected with the processor by penetrating through the first board from the top surface to the bottom surface;

a second board arranged at a position distant from the bottom surface of the first board and provided with a power supply device;

a first conductor mounted on the bottom surface of the first board and electrically connects the plurality of first through holes and the power supply device, and

a second conductor mounted on the bottom surface of the first board and electrically connects the plurality of second through holes and the power supply device.

2. The power supply board according to claim 1, wherein a power supply voltage is supplied from the power supply device to the processor through the first through hole and the first conductor, and a ground voltage is supplied from the power supply device to the processor through the second through hole and the second conductor.

3. The power supply board according to claim 1, wherein the first conductor is arranged at a location just below the plurality of first through holes and a central portion of the second board, the second conductor is arranged at a location just below the plurality of second through holes and a central portion of the second board, and the power supply device is arranged at an outer periphery outside of the central portion of the second board.

4. The power supply board according to claim 1, wherein the first conductor and the second conductor are a first connector, and the second board include a second connector coupled with the first connector.

5. The power supply board according to claim 1, wherein the first conductor includes a first portion mounted on the bottom surface of the first board and a second portion inserted into a hole provided in a third through hole penetrating through the second board, and a diameter of the first portion of the first conductor is larger than a diameter of the hole provided in the third through hole.

6. The power supply board according to claim 1, wherein the second conductor includes a first portion mounted on the bottom surface of the first board and a second portion inserted into a hole provided in a fourth through hole penetrating through the second board, and a diameter of the first portion of the second conductor is larger than a diameter of the hole provided in the fourth through hole.

7. The power supply board according to claim 1, wherein the first conductor includes a first columnar portion mounted on the bottom surface of the first board, a second columnar portion which is in contact with the second board, and a third columnar portion formed between the first columnar portion and the second columnar portion, and

a diameter of the third columnar portion is smaller than a diameter of the first columnar portion and a diameter of the second columnar portion.

8. The power supply board according to claim 1, wherein the second conductor includes a first columnar portion mounted on the bottom surface of the first board, a second columnar portion which is in contact with the second board, and a third columnar portion formed between the first columnar portion and the second columnar portion, and

a diameter of the third columnar portion is smaller than a diameter of the first columnar portion and a diameter of the second columnar portion.