Wiring method for reducing EMI interference and circuit board
A circuit board and circuit technology, applied in printed circuits, printed circuits, printed circuit components, etc., can solve problems such as large earth impedance and equipment EMI interference
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Embodiment 1
[0040] like figure 1 As shown, the embodiment of the present invention provides a wiring method for reducing EMI interference, and the method may include the following steps:
[0041] Step 101: Configure at least one loop configuration for the cables that need to be arranged on the circuit board;
[0042] Step 102: According to wiring requirements, use the signal line of the cable to connect to the signal pins of each device to form a signal transmission link;
[0043] Step 103: According to the connection sequence between the cable and each device, connect each loop configuration in the cable to the corresponding loop pin of the device to form at least one signal transmission loop, wherein the impedance corresponding to each signal transmission loop less than the corresponding impedance of the ground.
[0044] According to the solutions provided by the above embodiments, at least one loop configuration is configured for the cables on the circuit board, so that each loop con...
Embodiment 2
[0056] Take the configuration of GND routing and shielding layer on the cable at the same time as an example, for example figure 2 The circuit shown is implemented on a circuit board configuration, in figure 2 Among them, the circuit board includes a sub-board and a motherboard, and the internal components of the sub-board are connected by internal cables, and the internal components of the motherboard are also connected by internal cables, and the sub-board and the motherboard are connected by external cables. Connection, under normal circumstances, because the external cable is exposed to the outside, therefore, there will be a shielding layer to wrap the signal line to prevent leakage, but for the internal cable, only the bare signal line is included. Therefore, in this case, please refer to image 3 , the embodiment of the present invention provides a wiring method for reducing EMI interference, the method may include the following steps:
[0057] Step 301: Choose to c...
Embodiment 3
[0077] The embodiment of the present invention also provides a circuit board, including: a cable and a plurality of devices; wherein,
[0078] The cable includes a signal line and at least one loop configuration;
[0079] The signal line of the cable is connected to the signal pins of each device to form a signal transmission link;
[0080] Each loop configuration in the cable is respectively connected to a corresponding loop pin of a corresponding device to form at least one signal transmission loop, wherein the impedance corresponding to each signal transmission loop is smaller than the impedance corresponding to the ground.
[0081] In an embodiment of the present invention, the loop configuration includes: GND routing; the GND routing is arranged in parallel with the signal line;
[0082] The loop pins include: GDN pins;
[0083] The GND wiring is connected to the GND pin of the device to form a GND signal transmission loop.
[0084] In an embodiment of the present inve...
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