Multi-phase staggered voltage-reduction power supply and electronic equipment

Abstract

The invention discloses a multi-phase staggered voltage-reduction power supply and electronic equipment. The multi-phase staggered voltage-reduction power supply is used for supplying power to an IC device and comprises a multi-phase branch power supply module. The multi-phase branch power supply module is arranged on the bottom face, away from the IC device, of a main board where the IC device islocated. According to the multi-phase staggered voltage-reduction power supply and the electronic equipment, the redundant wiring distance can be shortened and even eliminated, so that the loss is reduced, the efficiency is improved, and the pin design of an IC device is facilitated. The multi-phase branch power supply module is arranged to be far away from the IC device, so that the dynamic performance of the power supply is not influenced to the maximum extent, the number of layers of the PCB can be reduced to a certain extent, the use area of the PCB can be reduced to a certain extent, andthe cost of the PCB is reduced.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a multi-phase interleaved step-down power supply and electronic equipment. Background technique [0002] Provide high-performance semiconductor IC (integrated circuit, integrated circuit) devices such as CPU / GPU / ASIC (central processing unit, central processing unit / Graphics Processing Unit, graphics processor / Application Specific Integrated Circuit, special integrated circuit) on motherboards such as computer servers The power supply POL (point of load, point-of-load power supply) basically uses a multi-phase interleaved step-down power supply circuit. With the iterative upgrade of IC chip manufacturing technology and the increase in demand for application scenarios, the core voltage of a single chip is getting more and more low, the current is getting higher and higher, and the size is getting bigger and bigger, resulting in a higher and higher proportion of line lo...

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Problems solved by technology

For example, the potential at point b will be significantly higher than the potential at point c, so in order to satisfy the normal operation of the core unit at the lowest potential point, the output voltage of the power supply can only be increased, but this will lead to an unnecessary increase in the power consumption of the IC device 200'

And in the case of a large-sized chip or a large chip current and a large number of power supply phases, the distance between the output end of the phase branch at the edge of the power supply and the IC device 200' is much greater than the distance between the phase branch at the center axis and the IC device 200'. The distance between the IC devices 200', for example, the distance between a0 and the IC device 200' is much larger than the distance between a and the IC device 200', which will cause the current imbalance of each phase

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