STWBC86 operating frequency

[pEEter]

Does the charger IC ever operate outside of the specified TX FREQ MAX and TX FREQ MIN limits?

For example, if the limits are set to 100kHz and 148kHz and the charger is operating at either limit, would FSK cause it to change the frequency below this value? If so, how much would the frequency be exceeded?

[Didier HERROUIN · Accepted solution]

Hello,

The FSK signal is used by the charger to communicate to the Receiver during the identification phase mainly, and it is superimposed to the power signal. It does not impact the operating frequency range which is defined by NVM parameters in the charger.