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Topology is still mentioned a lot in the field of electronics PCB board. Topology reflects the overall framework of hardware, such as three classic topologies in common non-isolated power supplies: buck, boost and buck-boost (buck, boost & buck- boost). In the routing process of the PCB board, there is also a certain topology relationship between each device, let us take a look at it together.
1. Point-to-point topology
Very simple topology, single driver, single receiver.
2. Compact tree topology
String the drivers and receivers one by one with very short interconnecting transmission lines, starting with the main driver, first using the transmission line to connect to a buffer very close to the main driver, then looking in the remaining unconnected buffers A buffer that is very close to the already connected buffer, and connect the two with a transmission line, and so on, until all buffer connections are completed.
3. Daisy chain topology
Use very short interconnecting transmission lines to connect all buffers, but many of each buffer can only be connected to the other two buffers by two transmission lines, starting from the main driver and connecting to the main driver through transmission lines. Then find the unconnected buffer that is very close to the buffer, connect the two with a transmission line, and then take the buffer just added to the connection as the benchmark, and find the unconnected buffer that is very close again to connect. , and so on, until all buffer connections are completed, after which, starting from the main drive, all buffers are connected in a chain.
4. Star topology
Starting with the main drive, the daisy-connection to the other drives is done first through the cable, and then all the receivers are connected through the cable to the last drive in the daisy-chain of drives. If there is only one drive, this drive is in the center of the star.
5. Distal cluster
Very similar to a star, except that the very last driver connected to the daisy chain of drivers is connected to a "T" node via a long transmission line, and then all receivers are also connected to this via transmission lines" On the T" node, all receivers are clustered together.
6. Hybrid topology
It is a mixture and cross use of the above conventional topologies on PCB board.
