Voltage following series power supply circuit

Abstract

The invention relates to a voltage following series power supply circuit. The circuit comprises a power supply terminal, a ground terminal, a power supply module and at least one auxiliary power supply module, wherein the power supply module comprises an input terminal and an output terminal, the input terminal is connected to the power supply terminal, and the output terminal is used for supplying a power supply to two or more to-be-powered-up chips; the power supply module and the to-be-powered-up chips are connected in series between the power supply terminal and the ground terminal; the atleast one auxiliary power supply module is used for providing auxiliary power supplies for the to-be-powered-up chips; a voltage following module is also connected between the power supply terminal and the at least one auxiliary power supply module and used for adjusting the voltage of the auxiliary power supplies.

Description

Technical field [0001] The invention relates to a series power supply circuit, in particular to a series power supply circuit capable of realizing voltage following. Background technique [0002] For computing devices that require a large number of high-speed operations, such as current Bitcoin mining machines, multiple computing power chips are connected in series on a printed circuit board, and most computing power chips use a series power supply mode. When the series power supply mode is adopted, the power of each level of computing power chip can be regarded as the ground of the previous level of computing power chip, and the ground of each level of computing power chip can be regarded as the power of the next level of computing power chip. [0003] Since the power and ground voltages of each level of computing power chips are different, how to supply power to the IO of this level of chips has become a more difficult problem. For the subsequent cascaded computing power chips, ...

AI Technical Summary

Problems solved by technology

[0005] figure 1 Although the series power supply circuit 100 shown can provide series power supply for the chip to be powered, it has the following disadvantages: (1) When the power supply voltage VCC directly supplies power to the auxiliary power module, when the voltage difference between the power supply voltage VCC and Vcore is small , the auxiliary power module cannot work normally; (2) When the auxiliary power module is powered by the boost power module, Vcore needs to be adjusted due to frequency conversion requirements. When Vcore drops, the output voltage of the boost power module is the same as The voltage difference of Vcore becomes larger, which may exceed the normal working voltage of the chip to be powered, making it unable to work normally; (3) Whether the power supply voltage VCC directly supplies power to the auxiliary power module, or is boosted by the boost power module The auxiliary power supply module supplies power. When Vcore does not exist, the power supply voltage VCC or the boost power supply module directly supplies power to the IO terminal of the chip to be powered, which will cause the chip to be powered to be burned

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