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公开(公告)号：US20240136862A1
公开(公告)日：2024-04-25
申请号：US18174729
申请日：2023-02-27
Applicant: Richtek Technology Corporation
Inventor： Fu-Chi LIN
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 senses the current of the transmission device to obtain a current message, and determines whether a foreign object exists according the current message. When determining that the foreign object exists, the control device does not generate a carrier signal. When determining that the foreign object does not exist, the control device generates a carrier signal in a transmission period, and the carrier signal is output through the transmission device.
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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
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.
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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
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.
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公开(公告)号：US20240235273A9
公开(公告)日：2024-07-11
申请号：US18174729
申请日：2023-02-27
Applicant: Richtek Technology Corporation
Inventor： Fu-Chi LIN
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 senses the current of the transmission device to obtain a current message, and determines whether a foreign object exists according the current message. When determining that the foreign object exists, the control device does not generate a carrier signal. When determining that the foreign object does not exist, the control device generates a carrier signal in a transmission period, and the carrier signal is output through the transmission device.
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