data/text/DLP3/898520

TPS54308: Switching current to flow under the device

Part Number: TPS54308 Hello! The datasheet says not to allow switching to flow under the device. Is this a suggestion or a hard rule? I have a customer that is far into their design that includes the switch node coming out from under the device, passing by the ground pin. I can send their layout privately if helpful. Thanks!

Hi Lindsey, Generally speaking, the SW is not allowed to be routed under the IC. GND trace is ok. You can also follow the layout example of TPS56339EVM. This layout is better than the TPS54308.