Method for enhancing Ethernet lightning protection of small-size PCB

An Ethernet, lightning protection technology, applied in the layout details of conductive patterns, printed circuit components, etc., can solve problems such as increasing the cost of PCBA design, and achieve the effect of improving the ability to resist lightning strikes and surges

Pending Publication Date: 2020-04-24
JINGCHEN SEMICON SHENZHEN CO LTD
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Problems solved by technology

However, this will undoubtedly increase the design cost of PCBA

Method used

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Embodiment Construction

[0013] In order to describe the technical scheme of the present invention more clearly and completely, the present invention will be further described below.

[0014] The present invention proposes a method for enhancing the lightning protection of Ethernet with a small size PCB, comprising the following steps:

[0015] (1) Measure the distance between the Ethernet socket on the PCB board and the center of the transformer, and the associated component area of ​​the Ethernet socket and the surrounding network signal, power network signal or other components;

[0016] (2) Determine whether the above distance meets the safety distance required by the Ethernet lightning surge specification;

[0017] (3) If the above distance does not meet the safety distance required by the Ethernet lightning surge specification, the area between the Ethernet network port socket and the center of the transformer, and the associated component area of ​​the Ethernet network port socket and the surro...

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PUM

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Abstract

The invention provides a method for enhancing Ethernet lightning protection of a small-size PCB. The method comprises the steps of measuring an area from an Ethernet port seat on the PCB to the centerof a transformer, and a distance between an associated component area of the Ethernet port seat and a surrounding network signal, a power supply network signal or other components; judging whether the distance meets a safe distance required by an Ethernet lightning surge specification or not; if the distance does not meet the safety distance required by the specification, at least one slot position is formed between the Ethernet port seat and the center of the transformer and between the associated component area of the Ethernet port seat and the surrounding network, power supply network or other components; and carrying out surge testing on the Ethernet to find that the Ethernet can pass surge 4KV common-mode testing. According to the method for enhancing lightning protection of the Ethernet through the small-size PCB, the lightning surge resistance of the Ethernet can be improved under the condition that the small-size requirement is met and the design cost is not increased.

Description

technical field [0001] The invention relates to the field of PCB board design, in particular to a method for enhancing the lightning protection of Ethernet with a small-sized PCB. Background technique [0002] In the application of Internet TV set-top boxes such as MBOX and IPTV, customers have higher and higher performance requirements, and at the same time, the size of PCBA boards is getting smaller and smaller. How to achieve high performance in a small size has become a bottleneck in the current design. The anti-lightning surge ability of Ethernet is affected by PCBA design and environmental equipment. Currently, in order to save the overall BOM cost of the product, the PCBA size is continuously reduced and the original functions (or even increased functions) and performance indicators must not be reduced. This makes the size The anti-lightning surge design of Ethernet on the reduced PCBA is more stringent and difficult. [0003] Nowadays, the common practice in the ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02
CPCH05K1/0296
Inventor 方宏飞冯杰张坤黄德华李双庆
Owner JINGCHEN SEMICON SHENZHEN CO LTD
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