As you can see in my attached image, MPQ9840GL’s datasheet provided a reference layout circuit with Pin3(SW) unconnected.
I have a question here, due to our strict EMC standard, I have to know whether this pin left float will have a negative impact on EMC performance since it leaves a switch node (SW) float.
Hello,
This layout has been tested and you can refer to the evaluation board as well as the typical performance characteristics for CE and RE.
Best Regards,
Yu