公开(公告)号：US20190341770A1

公开(公告)日：2019-11-07

申请号：US16354129

申请日：2019-03-14

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Shung-Tsung Chen ,  Yi-Syue Jhu ,  Chieh-Min Lo ,  Tsung-Han Tsai

IPC: H02H7/20 ,  H02H1/00 ,  G01V3/04

Abstract: A power supply system includes a power supplier circuit and a power receiver circuit. The power supplier circuit supplies a power via a communication interface compatible with a first communication interface specification or a second communication interface specification. The first communication interface specification includes a delay threshold. After the power supplier circuit is coupled to the power receiver circuit, the power supplier circuit supplies the power after a first delay period. The power receiver circuit confirms whether the power supplier circuit is coupled to the power receiver circuit via a coupling confirmation step according to the first communication interface specification. The power receiver circuit confirms whether the power supplier circuit is compatible with the first communication interface specification or the second communication interface specification according to whether the first delay period is greater than the delay threshold.