公开(公告)号：EP3913767A1

公开(公告)日：2021-11-24

申请号：EP21172661.7

申请日：2021-05-07

Applicant: STMicroelectronics Design and Application s.r.o.

Inventor： TOULA, Mr. Michal

IPC: H02J50/12 ,  H02H9/04

Abstract: A wireless charging receiver (500) includes a controller (310) configured to determine that a first overvoltage threshold is met and based thereon enable a first switch (510) to couple an output of a rectifier (314) to electrical ground through a first resistor (510), to determine that a second overvoltage threshold is met and based thereon enable receive resonant circuit switches (515) to short circuit a receive resonant circuit (335), to determine that a hysteresis threshold is met and based thereon disable the receive resonant circuit switches (515) to open circuit the receive resonant circuit (335) , and to determine that a hysteresis cycle threshold is met and that the receive resonant circuit switches (515) are disabled and based thereon enable a second switch (525) to couple a second resistor (520) to the electrical ground and to communicate to wireless charging transmitter to decrease the power level on wireless charging receiver side.