公开(公告)号：US20240235276A9

公开(公告)日：2024-07-11

申请号：US18150945

申请日：2023-01-06

Applicant: Richtek Technology Corporation

Inventor： Fu-Chi LIN ,  Po-Chang CHEN ,  Wen-Ti LO

IPC: H02J50/80 ,  H02J50/10

CPC classification number: H02J50/80 ,  H02J50/10

Abstract: A wireless power transmission device includes a transmission device and a control device. The control device generates a driving signal to the transmission device in a first soft-start period, so as to drive the transmission device. The control device measures an energy message generated by the transmission device to generate a measurement result in a measurement period, and calculates a signal parameter according to the measurement result. The control device accordingly generates a carrier signal according to the signal parameter obtained by the measurement period in a second soft-start period. In a transmission period, the carrier signal is transmitted to the wireless power-receiving device through the transmission device. The energy message is generated by the transmission device in response to a distance between the transmission device and the wireless power-receiving device.

公开(公告)号：US20240136864A1

公开(公告)日：2024-04-25

申请号：US18150945

申请日：2023-01-06

Applicant: Richtek Technology Corporation

Inventor： Fu-Chi LIN ,  Po-Chang CHEN ,  Wen-Ti LO

IPC: H02J50/80 ,  H02J50/10

CPC classification number: H02J50/80 ,  H02J50/10

Abstract: A wireless power transmission device includes a transmission device and a control device. The control device generates a driving signal to the transmission device in a first soft-start period, so as to drive the transmission device. The control device measures an energy message generated by the transmission device to generate a measurement result in a measurement period, and calculates a signal parameter according to the measurement result. The control device accordingly generates a carrier signal according to the signal parameter obtained by the measurement period in a second soft-start period. In a transmission period, the carrier signal is transmitted to the wireless power-receiving device through the transmission device. The energy message is generated by the transmission device in response to a distance between the transmission device and the wireless power-receiving device.