VRM Power Supply Path Switching for CPU Upgrades
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Solution Overview
Problem
The existing power supply systems for central processing units (CPUs) are inadequate when upgrading CPUs, requiring replacement of the motherboard due to insufficient power from the voltage regulator module (VRM), leading to economic inefficiencies and waste.
Innovation Solution
A power supply system utilizing multiple voltage regulator modules (VRMs) and switch units to dynamically reroute power supply paths, allowing for increased power delivery without necessitating motherboard replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single VRM is used for each CPU socket, then the power supply path is simple and the device complexity is low, but the power delivery capability is insufficient when upgrading to higher-power CPUs
Solution Approach 1:
The patent implements multi-functionality by enabling each VRM to supply power to multiple CPU sockets through switch units. Specifically, the first VRM can supply power to both the first CPU socket (via first switch unit) and the second CPU socket (via second switch unit), and similarly the second VRM can supply power to both sockets. This allows a single VRM to serve multiple functions and multiple CPUs, increasing overall power delivery capability without requiring a proportional increase in VRM count.
Solution Approach 2:
The patent applies dynamics by introducing switch units that can dynamically change the power supply configuration. The switch units allow the system to adaptively route power from any VRM to any CPU socket based on the actual power requirements of the installed CPUs. This dynamic reconfiguration capability enables the system to optimize power distribution for different CPU configurations, resolving the contradiction between simple fixed connections and the need for flexible high-power delivery.
2Power
If the VRM power capacity is increased to support upgraded CPUs, then the power delivery capability is sufficient, but the cost increases and the original VRM becomes inadequate requiring motherboard replacement
Solution Approach 1:
The patent makes the power supply system universal by enabling any VRM to supply power to any CPU socket through the switch units. This means the existing VRMs can adapt to different CPU power requirements by dynamically reconfiguring the power paths, rather than being locked into fixed one-to-one mappings. The system can accommodate CPU upgrades by redistributing power loads across available VRMs, enhancing adaptability without requiring hardware replacement.
Solution Approach 2:
The dynamic switching capability allows the system to adapt to different CPU power requirements in real-time. When CPUs are upgraded to higher power consumption models, the control unit can dynamically reconfigure the switch units to route appropriate power from the available VRMs, ensuring the system adapts to new power demands without physical modification or replacement of the VRMs or motherboard.
3Power
If multiple VRMs are used to increase power delivery, then the power capacity is sufficient, but the device complexity and circuit routing become more complex
Solution Approach 1:
The patent applies segmentation by dividing the power supply function into independent modular units: multiple VRMs, multiple CPU sockets, and intermediary switch units. Each VRM operates as an independent power source, and each switch unit independently manages the connection between VRMs and CPU sockets. This segmentation allows the system to scale power capacity by adding modular components while maintaining manageable complexity through standardized interfaces and control logic.
Solution Approach 2:
The switch units serve as intermediaries between the VRMs and CPU sockets, simplifying the overall circuit routing complexity. Instead of creating direct complex interconnections between every VRM and every CPU socket, the switch units act as mediator nodes that manage the power paths. This intermediary layer abstracts the complexity, allowing multiple VRMs to efficiently serve multiple CPUs through standardized switching mechanisms rather than requiring complex point-to-point routing.
Data Source
AI summary
A power supply system suitable for being located in a computer is provided. The system includes a first voltage regulator module (VRM), a second VRM, a first switch unit, and a second switch unit. The first VRM is used to supply a first power. The second VRM is used to supply a second power. The first switch unit is used for controlling the first power to be transmitted to a first central processing unit (CPU) socket by a first power supply path or to a second CPU socket by a second power supply path. The second switch unit is used for controlling the second power to be transmitted to the first CPU socket by the third power supply path or to the second CPU socket by the fourth power supply path.