USB Port Power Prioritization With Dynamic Power Renegotiation
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Solution Overview
Problem
Conventional power distribution systems fail to optimally allocate power to multiple USB ports due to fixed allocation, lack of system-wide monitoring, and inability to adjust power in real-time, leading to inefficiencies and potential overloading or under-powering of devices.
Innovation Solution
An intelligent power distribution system with current sensing, downstream port prioritization, and dynamic power renegotiation, utilizing USB Power Delivery protocols to monitor and adjust power allocation based on real-time device needs, ensuring the total power draw stays within the system's capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is distributed evenly across all USB ports, then all ports receive consistent power, but some devices receive more power than needed causing energy waste while others receive insufficient power
Solution Approach 1:
The patent implements dynamic power allocation that adjusts power distribution in real-time based on actual device needs. The system continuously monitors power consumption and renegotiates power allocation dynamically, transitioning from static even distribution to adaptive dynamic distribution that matches actual device requirements.
Solution Approach 2:
The system employs feedback mechanisms through current sensing and system-wide power monitoring to detect actual power consumption. This feedback enables the controller to adjust power allocation accordingly, ensuring devices receive appropriate power while preventing energy waste from over-provisioning.
2Device complexity
If fixed power allocation is used, then system complexity is reduced, but the system cannot adapt to variable power demands of different devices
Solution Approach 1:
The patent transforms fixed power allocation into dynamic power allocation that adapts to varying device requirements. The system uses USB Power Delivery protocols to renegotiate power allocation in real-time, enabling flexibility while maintaining manageable complexity through standardized protocols.
Solution Approach 2:
The system changes power allocation parameters dynamically based on device needs. By monitoring current consumption and adjusting power delivery parameters in real-time, the system achieves adaptability without requiring overly complex manual configuration.
3Device complexity
If system-wide power monitoring is not implemented, then device complexity is reduced, but the total power draw may exceed the power source capacity causing overloading
Solution Approach 1:
The patent implements system-wide power monitoring that provides feedback on total power consumption. This feedback mechanism enables the controller to detect when power limits are approaching and adjust allocations accordingly, preventing overloading while maintaining system safety.
Solution Approach 2:
The controller acts as an intermediary that manages power distribution based on monitored system-wide power consumption. It coordinates between individual device requests and overall power source capacity, ensuring safe operation within power limits.
4Device complexity
If real-time power adjustment is not implemented, then system complexity is reduced, but power distribution remains suboptimal when device power needs change over time
Solution Approach 1:
The patent implements real-time dynamic power adjustment that responds to changing device power needs. The system continuously monitors and renegotiates power allocation, ensuring optimal power distribution adapts to temporal variations in device requirements.
Solution Approach 2:
The system maintains continuous power optimization through ongoing monitoring and adjustment. Rather than static allocation, the system continuously adapts power distribution to match actual device needs, maximizing power utilization efficiency over time.
Data Source
AI summary
A system and method for intelligently managing and distributing power from a common power source to multiple Universal Serial Bus (USB) downstream ports. The system integrates dynamic power management capabilities that enable efficient use of the available power and ensure optimal performance of connected devices. The system acquires real-time power consumption data, including current sensing to measure real-time power consumption of the connected devices and provide system wide power monitoring, to provide port power renegotiation based upon the real-time power consumption.