Dual Power Source Plane Layout for Redundant Server Power
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Solution Overview
Problem
Current power supply systems for storage products suffer from high logic complexity and reduced reliability due to multiple power source planes and redundancy modes, leading to unavailability when a fault occurs.
Innovation Solution
A power supply device with dual power source planes, where two independent PSU power source groups are connected to controllers via separate copper skin layers on the power source backboard, allowing for redundant power supply and reduced complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple power source planes are implemented for redundancy, then reliability is improved, but device complexity increases
Solution Approach 1:
The power source backboard is segmented into two independent power source planes (first copper skin layer and second copper skin layer), each capable of independently supplying power to controllers. This segmentation allows the system to maintain power supply capability even when one plane fails, thus improving reliability while keeping each individual plane's complexity manageable.
Solution Approach 2:
Controllers serve as intermediary components that receive power from both power source planes and combine the power supplies. This intermediary function allows the system to achieve redundancy without requiring complex interconnections between all components, as the controllers handle the power combination and distribution.
2Reliability
If 1+1 redundancy mode is used for each PSU, then power availability is improved, but logic complexity increases
Solution Approach 1:
The patent merges the power supply paths by having both power source planes connect to all controllers, rather than maintaining separate 1+1 redundant pairs. Each controller receives power from both planes and combines them, simplifying the overall logic by eliminating the need for complex redundancy management and failover switching logic.
Solution Approach 2:
Each power source plane is designed to be universal and can supply power to any controller independently. This multi-functionality allows either plane to take over completely if the other fails, simplifying the redundancy logic compared to dedicated 1+1 pairs where each PSU has specific redundant partners.
3Reliability
If four power source planes are implemented with independent segmentation, then power redundancy is improved, but manufacturing complexity increases
Solution Approach 1:
The backboard is divided into two manufacturable copper skin layers instead of four, reducing manufacturing complexity. Each layer can be independently fabricated and tested, making the manufacturing process more manageable while still achieving the desired redundancy through the two-plane architecture.
Data Source
AI summary
A power supply device with dual power source planes and a server. The device includes: a plurality of controllers connected in parallel; a first Power Supply Unit (PSU) power source group and a second PSU power source group each includes two PSU power sources connected in parallel, and the first PSU power source group and the second PSU power source group are respectively located on two independent power source planes; and a power source backboard, wherein the power source backboard includes a first copper skin layer and a second copper skin layer, which are not connected with each other, the first PSU power source group is connected to the input end of each controller by means of the first copper skin layer, and the second PSU power source group is connected to the input end of each controller by means of the second copper skin layer.