Dual-Output PSU Power Distribution for Server Standby
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Solution Overview
Problem
The existing power supply systems for 2U universal servers often face insufficient standby power supply due to increased current demands from externally inserted sub-cards, leading to potential power shortages.
Innovation Solution
A PSU-based power supply system with two output ports, where the first output port supplies a smaller current for main control components in a standby state and the second output port, with a higher current, is connected to load variable components and power-on running components, ensuring stable power distribution and overcurrent protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single PSU with P12V_STBY is used to supply standby power, then the system structure is simple, but the standby power supply current is insufficient when multiple externally inserted sub-cards are used
Solution Approach 1:
The patent divides the single PSU's power supply function into two separate output ports: P12V_STBY (first output port) and P12V_PSU (second output port). Each port is independently configured with different current capabilities - P12V_STBY for low current standby components and P12V_PSU for high current loads, thereby resolving the contradiction between sufficient power supply and structural simplicity.
Solution Approach 2:
Different regions of the power supply system are assigned different current characteristics. The P12V_STBY output port is designed with lower current capability (3A) suitable for main control components, while the P12V_PSU output port is designed with higher current capability (100A) suitable for externally inserted sub-cards and power-on running components, achieving local optimization of power supply characteristics.
2Loss of energy
If P12V_PSU is used to supply power to externally inserted sub-cards, then sufficient current is provided, but power is wasted during standby state
Solution Approach 1:
The patent implements dynamic power supply switching through a switch component that changes its state based on system operation mode. During standby state, the switch disconnects P12V_PSU from externally inserted sub-cards, enabling P12V_STBY to supply power. During operation state, the switch connects P12V_PSU to supply power. This dynamic switching resolves the contradiction between energy efficiency in standby and sufficient power supply during operation.
Solution Approach 2:
The patent ensures continuous and appropriate power supply to different components based on system state. The switch component continuously monitors and adjusts the power supply configuration, ensuring that main control components always receive power from P12V_STBY, while externally inserted sub-cards receive power from P12V_PSU only when needed, eliminating energy waste while maintaining continuous useful power delivery.
3Adaptability or versatility
If multiple externally inserted sub-cards are added to enhance functionality, then system versatility is improved, but current demand exceeds PSU standby capacity
Solution Approach 1:
The patent creates a universal power supply system that can accommodate multiple externally inserted sub-cards with different power requirements. The dual-output PSU configuration with P12V_STBY and P12V_PSU provides versatile power supply capabilities, allowing the system to support various combinations of sub-cards while maintaining adequate standby power for main control components.
Data Source
AI summary
A power supply unit (PSU)-based power supply system. A first output port of the PSU is connected to a main control component of a main board by using a voltage converter, and is used to supply power to the main control component in a system standby state. A second output port of the PSU may be connected to a load variable component of the main board; or the first output port and the second output port of the PSU may be connected to the load variable component by means of a power switching apparatus, and an enabling end of the PSU is grounded, so that both the first output port and the second output port have a voltage output when the PSU is inserted into the main board. A current value output by the second output port is relatively large load variable, which meets a power supply requirement of the load variable component. The second output port of the PSU is connected to each power-on running component of the main board by means of a switch component, and the switch component is in an off state in the system standby state. After the system is powered on, the switch component is in an on state, so that each power-on running component does not have extra power consumption when the system is in standby mode.