Hi Team,
Customer would like to design LM3489 in type C monitor. the monitor adaptor is 20V as LM3489 input. LM3489 output 20V or 15V to type C connector. (the output voltage is decided by different feedback network)
However, customer plug the type C cable to NB. And type C monitor provide power to NB.
While charging around 1A to 2A, there is audible noise from the PCB board.
Would you please help review schematic and provide your comments?
what is the most common component to cause the audible noise?
Thanks for help!
SHH
