Rackmount I/O Signal Protector Assembly for Gigabit Surge Protection
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Solution Overview
Problem
Existing surge protection devices for telecommunications equipment are unable to provide effective over-voltage and over-current transient protection while maintaining 1 gigabit network data rates, leading to potential damage from transient voltage and current surges.
Innovation Solution
A rackmount I/O signal protector assembly with a unique 1 gigabit surge protector circuitry, featuring a housing enclosure with a printed circuit board mounting a network of voltage suppressor devices, current-limiting devices, diodes, and clamping devices, designed to separate conductive traces for preventing network cross-talk and protect against transient surges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surge protection devices are used, then transient voltage and current surge protection is provided, but 1 gigabit network data rates cannot be maintained
Solution Approach 1:
The patent changes the electrical parameters of the protection circuit by using TVS diodes with specific breakdown voltages (e.g., 5.6V, 6.8V, 8.2V) and low capacitance values (e.g., 1pF, 2pF, 3pF) to enable the circuit to respond to surges while maintaining signal integrity for gigabit data rates. The circuit transitions from a passive state to an active protection state only when voltage exceeds the TVS breakdown threshold.
Solution Approach 2:
The TVS diodes act as intermediary elements that clamp transient voltage spikes to safe levels without interfering with normal data signal transmission. The diodes provide a low-impedance path for surge current while presenting minimal capacitance to high-speed data signals, effectively mediating between the surge source and protected equipment.
2Reliability
If conductive traces are placed closer together to reduce cross-talk, then network signal integrity improves, but susceptibility to transient surges increases
Solution Approach 1:
The patent applies different trace spacing strategies for different signal types: tighter spacing for differential data pairs to maintain signal integrity, and wider spacing for single-ended reference voltage traces to reduce surge coupling. The TVS diodes are strategically placed at specific locations where surge protection is most critical, providing localized protection rather than uniform spacing throughout the board.
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
The solution effectively protects telecommunications equipment from transient voltage and current surges, maintaining 1 gigabit network connectivity and meeting UL 497 and UL 497A surge limits, thereby reducing the risk of equipment damage and ensuring data integrity.
Implementation Method 1
a surge protector network mounted on the printed circuit board and interconnected between an unprotected side and a protected side. The surge protector network includes gigabit surge protector circuitry formed of a plurality of voltage suppressor devices, current-limiting devices, diodes, and clamping devices.
Implementation Method 2
The surge protector network includes gigabit surge protector circuitry formed of a plurality of voltage suppressor devices, current-limiting devices, diodes, and clamping devices.
Data Source
AI summary
A rackmount I/O signal protector assembly for protecting telecommunications related equipment and other associated sensitive electrical components from transient voltage and current surges includes a housing enclosure, a printed circuit board disposed within the housing enclosure, and a surge protector network mounted on the printed circuit board and interconnected between an unprotected side and a protected side. The surge protector network includes gigabit surge protector circuitry formed of a plurality of voltage suppressor devices, current-limiting devices, diodes, and clamping devices. Input side connector devices are coupled to the unprotected side for connecting to incoming telecommunication lines. Output side connector devices are coupled to the protected side for connecting to customers' electrical equipment to be protected.