what do we know about Cypress IC-Excellent anti-interference

Jul 20, 2019 Leave a message

First of all, we need to say that the power interference problem has long been a big enemy of the mutual-capacity screen, so many products require that they must use their designated adapter (including apple). If you give him a cottage power supply, he can't avoid the interference problem.
   From all current cases, power supply interference is mainly concentrated in large-size TP (7.0 inches or more), and we currently have the following solutions:
(1) Choose a quality power supply. This is very important and the most effective and fundamental way to solve power disturbances;
(2) Frequency hopping. Use the spectrum analyzer to find the area where the common mode interference strength of the adapter is small, and then set the TX scan frequency to this area through software setting, which can effectively control the interference. If there is interference in the full frequency band, it is recommended to abandon the adapter;
(3) Improve the signal to noise ratio. In the initial design of TP (7.0inch or more), consider using the low-impedance surface-rent material for the RX signal channel and using the design of the double-sided trace. Try to control all the channel resistances within 10K, which can effectively control the power supply interference. ;
(4) It is also possible to change the charger, increase the algorithm filtering, adopt the pattern suggested by Cypress, and so on.
      Of course, whether it is hardware or software, we will actively work hard to solve the problem of power interference as soon as possible, and provide a better platform for everyone to use.