The TPS2583x-Q1 and TPS2584x-Q1 is the USB Type-C or Type-A charging controller, which is widely used in the automotive USB charging application. In the application report, the customer sometimes meets the problem that data is disconnected or the charging current is small. Ground shift issues may be one a cause for this phenomenon.

This application report has an introduction of ground shift phenomenon. And introduce how ground shift disrupts data communication and also reduce the charging current. Some suggestions are given to avoid or reduce ground shift phenomenon.