PoE Power Forwarding via Transistor Switch Topology
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Solution Overview
Problem
Current Power over Ethernet (PoE) technologies are inefficient in powering Power Sourcing Equipment (PSE) devices, leading to heat dissipation, high costs, and power loss, as they rely on switching regulators that interfere with the PoE handshaking protocol and are not designed to power other PSE devices.
Innovation Solution
The system forwards the input voltage from Powered Devices to Power Sourcing Equipment devices using a transistor switch topology, eliminating the need for switching regulators and allowing PSE devices to power each other without disrupting the PoE handshaking protocol, thereby reducing heat, cost, and power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If switching regulators are used to power PSE devices, then power can be supplied to PSE, but heat dissipation increases and power efficiency decreases
Solution Approach 1:
The patent extracts and eliminates the switching regulator component from the PSE power supply system. Instead of using a switching regulator to step up voltage for powering the PSE, the system directly forwards the PD input voltage to the PSE device, removing the source of heat dissipation and improving power efficiency.
Solution Approach 2:
The Ethernet cable is made multi-functional by enabling it to carry both data communication signals and power transmission simultaneously. The same cable infrastructure used for data is repurposed to forward power from the PD to the PSE, eliminating the need for separate power supply components and reducing overall system complexity.
2Use of energy by moving object
If switching regulators are used to power PSE devices, then power conversion can be achieved, but power loss increases
Solution Approach 1:
The switching regulator is extracted from the power path, eliminating its inherent power losses. The direct voltage forwarding approach ensures that power is transmitted from the PD to the PSE without conversion losses, maintaining higher power efficiency throughout the system.
3Ease of operation
If switching regulators are used to power PSE, then voltage conversion is possible, but the PoE handshaking protocol is interfered with
Solution Approach 1:
The switching regulator and its control circuitry are removed from the system. This simplifies the power supply circuit and eliminates interference with the PoE handshaking protocol, allowing the protocol to operate cleanly without complications from regulator control signals or switching noise.
Solution Approach 2:
The Ethernet infrastructure is made multi-functional, serving both data communication and power transmission purposes through the same cable and protocol framework. This unified approach simplifies system operation and maintains compatibility with standard PoE handshaking procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances power efficiency, reduces heat dissipation, and lowers costs by eliminating the need for switching regulators, while enabling PSE devices to power subsequent subsystems without interfering with the PoE handshaking protocol.
Implementation Method 1
The system includes a master source that provides power to downstream devices... the first Powered Device provides power to other components in the first subsystem through subsystem voltages... the first power switching device uses a first switcher regulator that steps up the subsystem voltage to power up the first Power Sourcing Equipment Device
Data Source
AI summary
The present disclosure describes a system 400 for transmitting power to a remote Power over Ethernet (PoE) subsystem by forwarding Powered Device (PD) input voltage where the subsystem includes a PD and a Power Sourcing Equipment (PSE) device. Included is a master PSE device 402, a first subsystem 410, and a second subsystem 428. The first subsystem 410 includes a first PD 418 that includes a first power switching device 426 and a first PSE device 424. The first power switching device 426 forwards the input power from the first PD 418 to the first PSE 424 without disturbing the PoE handshaking between the devices. The first power switching device 426 uses a switching device with level detection that detects the required input voltage. The second subsystem 428 receives the power from the first subsystem's 410 first PSE device 424. And the second subsystem 428 operates in a manner similar to the first subsystem 410.