Rack GPU Power Supply System Reducing Voltage Fluctuation
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Solution Overview
Problem
Conventional rack GPU power supply systems experience significant voltage fluctuations due to the large distance between the PSU power supply module and the GPU module, exacerbated by long cables and high parasitic inductance, which can lead to malfunction and system failure.
Innovation Solution
A power supply system with two power supply copper plates and two transfer copper plates, connected through crown clips to a BUS BAR, positions the GPU module adjacent to the PSU module, reducing distance and parasitic inductance, and using parallel copper plates to minimize contact resistance and inductance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the GPU module is separated from the PSU power supply module by the server module, then the layout flexibility is improved, but the distance between power supply and GPU increases, resulting in large parasitic inductance and voltage fluctuation
Solution Approach 1:
The patent transitions from a single-plane power transmission path to a three-dimensional configuration using multiple copper plates stacked vertically. The first and second power supply copper plates are arranged in different spatial planes, connected through transfer copper plates and crown clips, creating a multi-dimensional power distribution architecture that reduces parasitic inductance while maintaining layout flexibility.
2Area of stationary object
If long cables and BUS BARs are used to connect the PSU power supply module to the GPU module, then the power distribution coverage is improved, but the parasitic inductance increases, causing voltage fluctuation
Solution Approach 1:
The patent divides the power transmission path into multiple segmented components: power supply copper plates, transfer copper plates, crown clips, and BUS BARs. Each segment is optimized independently with sufficient contact areas, eliminating the need for excessively long continuous cables while maintaining broad power distribution coverage and reducing cumulative parasitic inductance.
Solution Approach 2:
The patent implements a nested hierarchical structure where power supply copper plates are connected to transfer copper plates, which are in turn connected to crown clips, and finally to the BUS BAR. This nested arrangement allows compact integration of multiple connection interfaces, reducing overall transmission distance and parasitic inductance while preserving distribution capability.
3Device complexity
If the crown clip contacts the BUS BAR with a small area, then the contact resistance increases, resulting in large inductance and voltage fluctuation
Solution Approach 1:
The patent merges multiple contact interfaces into a unified multi-plate structure. The first and second power supply copper plates are connected through transfer copper plates and crown clips to form an integrated power transmission system. This merging ensures sufficient contact area at each interface while maintaining overall connection simplicity through standardized modular components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration significantly reduces voltage fluctuations at the GPU module, enhancing system reliability and efficiency by shortening power transmission paths and optimizing contact areas.
Implementation Method 1
The first power supply copper plate is connected to the first crown clip through the first transfer copper plate. The first crown clip is connected to a BUS BAR. The BUS BAR is connected to the second power supply cooper plate through the second crown clip and the second transfer copper plate sequentially.
Implementation Method 2
each of the cable and the BUS BAR has a large length, resulting in a large parasitic inductance
Data Source
AI summary
A power supply system for reducing voltage fluctuation of a rack GPU, which includes: a PSU power supply module, two power supply copper plates including a first power supply copper plate and a second power supply copper plate, two transfer copper plates including a first transfer copper plate and a second transfer copper plate, and two crown clips including a first crown clip and a second crown clip. The PSU power supply module is connected to the first power supply copper plate, the first power supply copper plate is connected to a BUS BAR through the first transfer copper plate and the first crown clip sequentially, the BUS BAR is connected to the second power supply copper plate through the second crown clip and the second transfer copper plate sequentially, and the second power supply copper plate is connected to a GPU module mainboard.