Hello everyone,
I have been using the above mentioned IC for communicating 12 boards in daisy chain. In my configuration, each board can take 16 cell values. We are also doing cell temperature measurement using the AUX pins given in the IC. We are using a mux connected to the AUX pins such that they can measure all 16 temperature values.
Now I am facing problems in the communication part of the board. The IC provides a differential UART communication channel. The circuit is as follows IC>> 10ohms(with ESD Diode pulldown) >> common mode choke>> 1nF 1000V Capacitor and then to the next board with the same configuration.
Now this setup does not work with all the above mentioned components, but if i try removing the esd diodes it works fine. Or if i try changing the capacitor values to 22nF then also it works properly.
But it is not advisable by TI to do either changes as removing the esd diodes, the IC might get destroyed due to surges. And putting up high values of capacitors will load up the IC and it will eventually stop working.
Please suggest what to do?
