Multi-Phase Pulse Power Distribution for Short-Reach Ethernet
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Solution Overview
Problem
Conventional Power over Ethernet (PoE) systems are limited in power capacity, making them inadequate for devices requiring higher power, and they face challenges in long-distance power and data distribution due to transmission line effects and cable faults.
Innovation Solution
The implementation of a short reach multi-phase pulse power distribution system that transmits high power and data over Ethernet cables using multiple phases of power delivered in a sequence of pulses, with synchronization signals transmitted out of band to ensure efficient and reliable power delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional PoE systems are used for power distribution, then simplicity and ease of operation are maintained, but power capacity is limited and insufficient for high-power devices
Solution Approach 1:
The power distribution system is segmented into multiple phases (three-phase power delivery), where each phase carries a portion of the total power load. This segmentation allows the system to achieve higher power capacity while maintaining manageable complexity through modular phase management and standardized interfaces.
Solution Approach 2:
The system employs periodic pulsed power delivery across multiple phases, where power is delivered in controlled pulses rather than continuous flow. This periodic action enables efficient power transmission, reduces thermal effects, and allows for precise control of power delivery timing and magnitude.
2Length of stationary object
If long-distance power and data distribution is implemented, then coverage area is expanded, but transmission line effects and cable faults increase
Solution Approach 1:
By delivering power in periodic pulses rather than continuous flow, the system reduces cumulative thermal effects and electromagnetic interference along the transmission line. The pulsed delivery allows for better control of power transmission characteristics and reduces the impact of transmission line effects over distance.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor power delivery conditions and adjust transmission parameters accordingly. This feedback enables real-time compensation for transmission line effects and detection of cable faults, maintaining reliability even over extended distribution distances.
3Power
If multi-phase pulse power distribution is implemented, then power capacity and efficiency are improved, but hardware complexity increases
Solution Approach 1:
The multi-phase power system is segmented into standardized, modular phases that can be independently managed and controlled. Each phase operates as a discrete unit with standardized interfaces, allowing the system to scale power capacity by adding phases rather than redesigning the entire system architecture.
Solution Approach 2:
The system employs universal standardized interfaces and control protocols that work across all phases and device types. This universality allows the same hardware architecture to handle multiple phases and different device requirements, reducing overall hardware complexity despite the multi-phase capability.
4Measurement precision
If synchronization signals are transmitted out of band, then pulse synchronization accuracy is improved, but communication bandwidth requirements increase
Solution Approach 1:
The system uses an intermediary out-of-band communication channel dedicated to synchronization signals, separate from the main power and data channels. This intermediary channel provides accurate synchronization without competing for bandwidth with power delivery or data transmission, achieving high precision with minimal bandwidth consumption.
Data Source
AI summary
In one embodiment, a method includes transmitting multi-phase pulse power from power sourcing equipment to a powered device in a data center, wherein the multi-phase pulse power comprises multiple phases of power delivered in a sequence of pulses defined by alternating low direct current voltage states and high direct current voltage states, and synchronizing the pulses at the power sourcing equipment with the pulses at the powered device.