POWER SUPPLY CIRCUIT, SERIES POWER SUPPLY METHOD AND COMPUTING SYSTEM THEREOF

摘要

A power supply circuit includes: a DC-DC converter having a DC-DC power input connected to an external power supply and a DC-DC voltage output; a plurality of integrated circuit chips organized into a plurality of chipsets, each chipset including one or more of the plurality of integrated circuit chips connected in series; and a plurality of auxiliary power supply circuits including a top-stage auxiliary power supply circuit and one or more non-top-stage auxiliary power supply circuit, each auxiliary power supply circuit having an auxiliary voltage output, an auxiliary power input, and an auxiliary ground end. The plurality of chipsets are connected in series between the DC-DC voltage output and a circuit ground. The plurality of integrated circuit chips include a top-stage integrated circuit chip and one or more non-top-stage integrated circuit chips, each non-top-stage integrated circuit chip having a corresponding preceding-stage integrated circuit chip in the plurality of integrated circuit chips. Each integrated circuit chip includes a main voltage input, an auxiliary voltage input and a ground end. The DC-DC voltage output is connected to the main voltage input of the top-stage integrated circuit chip. The main voltage input of each non-top-stage integrated circuit chip is connected to the ground end of the corresponding preceding-stage integrated circuit chip. The auxiliary voltage output of each auxiliary power supply circuit is connected to the auxiliary voltage input of a corresponding same-stage integrated circuit chip in the plurality of integrated circuit chips. The auxiliary ground end of each auxiliary power supply circuit is connected to the ground end of the corresponding same-stage integrated circuit chip. The auxiliary power input of the top-stage auxiliary power supply circuit is connected to the external power supply. And the auxiliary power input of each non-top-stage auxiliary power supply circuit is connected to the main voltage input of one of the plurality of integrated circuit chips.