SPE Network Push-Pull Choke Layout for Lower Voltage Drop
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Solution Overview
Problem
Existing Single Pair Ethernet (SPE) devices with Power over Dataline (PoDL) face structural complexity in signal filtering, leading to increased cost and size due to the need for multiple push-pull chokes in the through line.
Innovation Solution
A device design incorporating a first push-pull choke as a low-pass filter in the line branch and a second push-pull choke in the through line, reducing the total resistance by up to 25% and minimizing voltage drop, while using a switching unit to manage current and data flow directionally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple push-pull chokes are arranged in the through line for signal filtering, then signal filtering performance is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts one push-pull choke from the through line and relocates it to the line branch connected to the supply unit. This separation removes the unnecessary filtering component from the data transmission path while maintaining adequate filtering where power supply interference needs to be suppressed, thereby reducing device complexity and cost while preserving essential filtering performance.
Solution Approach 2:
The patent segments the filtering function by placing push-pull chokes in different locations: one in the line branch for power supply filtering and one in the through line for data signal filtering. This segmented approach allows each choke to perform its specific filtering function efficiently, reducing the need for multiple chokes in series and simplifying the overall device structure.
2Reliability
If multiple push-pull chokes are arranged in the through line for signal filtering, then signal filtering performance is improved, but cost and size increase
Solution Approach 1:
The patent extracts one push-pull choke from the through line configuration and repositions it to the line branch. This reduction from multiple chokes to a optimized single-choke-per-branch configuration directly reduces component quantity, lowering both material cost and physical size while maintaining necessary filtering effectiveness for both power and data paths.
3Object-affected harmful factors
If push-pull chokes are used for filtering, then signal interference is reduced, but total resistance and voltage drop increase
Solution Approach 1:
The patent removes unnecessary push-pull chokes from the through line, extracting only the essential filtering function. By placing chokes strategically in the line branch and output side rather than multiple times in the through line, the design minimizes the cumulative resistance introduced by chokes while maintaining adequate filtering to reduce signal interference, thereby reducing voltage drop and energy loss.
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 design reduces the cost and size of the DC supply component, allowing for efficient power distribution and data transmission with minimized signal interference, enabling integration into SPE networks with simplified filtering and reduced component requirements.
Implementation Method 1
At least one first push-pull choke is arranged as a low-pass filter in the line branch between the node pair and the supply unit
Implementation Method 2
A second push-pull choke is arranged as a low-pass filter in the through line between the first, input-side node pair and the second, output-side node pair
Data Source
AI summary
A device for operation in a network, wherein a first interface is connected to a second interface via a two-core through line, which has a first line core and a second line core; wherein a supply unit is connected to the two-core through line via a first, input-side node pair and a line branch; wherein a data and electronic unit is arranged via a node pair in the line branch leading to the supply unit and via an output-side line and a second, output-side node pair parallel to the through line; wherein at least one first push-pull choke is arranged as a low-pass filter in the line branch between the node pair and the supply unit; and wherein a second push-pull choke is arranged as a low-pass filter in the through line between the first, input-side node pair and the second, output-side node pair.