Patent ID: 11966264
Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 0:
1. A system of providing power to a chip on a mainboard, comprising:
a first power supply, located on the mainboard, wherein the first power supply is configured to receive a first voltage and to provide a second voltage; and
a second power supply and a third power supply, wherein the second power supply and the third power supply are located on the mainboard and disposed at different sides of the chip, each of the second power supply and the third power supply is electrically connected to the first power supply to receive the second voltage, the second power supply provides a third voltage to the chip, the third power supply provides a fourth voltage to the chip, and

ZBUS_2≤5*(ZPS2_2+ZPDN_2),

wherein ZBUS_2 is bus impedance between the first power supply and the third power supply, ZPS2_2 is equivalent output impedance of the third power supply, and ZPDN_2 is transmission impedance between the third power supply and the chip.