公开(公告)号：US20180090993A1

公开(公告)日：2018-03-29

申请号：US15279094

申请日：2016-09-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mustapha El MARKHI ,  Erhan OZALEVLI ,  Tuli DAKE ,  Dingkun DU ,  Gianpaolo LISI ,  Jingwei XU

IPC: H02J50/12 ,  H02J7/02

CPC classification number: H02M3/33592 ,  H02J50/12 ,  H02M1/081 ,  Y02B70/1433 ,  Y02B70/1475

Abstract: A wireless power transfer system using a resonant rectifier circuit with capacitor sensing. A wireless power transfer system includes a power receiver resonant circuit and a synchronous rectifier. The power receiver resonant circuit includes an inductor and a capacitor connected in series with the inductor. The synchronous rectifier is configured to identify zero crossings of alternating current flowing through the inductor based on voltage across the capacitor, and control synchronous rectification of the alternating current based on timing of the zero crossings.

公开(公告)号：US20170031050A1

公开(公告)日：2017-02-02

申请号：US14811934

申请日：2015-07-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Gianpaolo LISI

IPC: G01V3/10

CPC classification number: G01B7/023 ,  G01D5/12 ,  G01D5/2066

Abstract: A distance measurement system includes a tank circuit including a transmit coil coupled to a transmit capacitor, a distance calculation circuit coupled to the transmit coil, and a target resonant circuit including a receive coil coupled to a receive capacitor. The receive coil is to receive a magnetic field generated by the tank circuit. The distance calculation circuit is to determine a reflected admittance. The reflected admittance includes a real component and an imaginary component. The distance calculation circuit is to determine a distance between the transmit and receive coils based on the imaginary component of the reflected admittance.

Abstract translation: 距离测量系统包括一个包括耦合到发射电容器的发射线圈，耦合到发射线圈的距离计算电路和包括耦合到接收电容器的接收线圈的目标谐振电路的谐振电路。 接收线圈将接收由电路产生的磁场。 距离计算电路是确定反射导纳。 反射导纳包括实部和虚部。 距离计算电路是基于反射导纳的虚部来确定发射线圈和接收线圈之间的距离。