公开(公告)号：US20200212729A1

公开(公告)日：2020-07-02

申请号：US16368777

申请日：2019-03-28

Applicant: Integrated Device Technology, Inc.

Inventor： Nicholaus SMITH ,  Rui LIU ,  Tao QI ,  Amit D. BAVISI ,  Chan Young JEONG

IPC: H02J50/90 ,  H02J50/10 ,  H02J50/40 ,  H02J7/02 ,  H03K17/955

Abstract: A capacitor sensor array (or grid) over a wireless power transmission coil can include a first set of lines; a second set of lines intersecting the first set of lines; a first multiplexer coupled to provide a charge (e.g. in the form of a DC voltage) from a voltage source to the first set of lines and provide first signals to detect voltages on each line; and a second multiplexer coupled to provide a charge from the voltage source to the second set of lines and provide second signals to detect voltages on each line, wherein an object positioned with respect to the first set of lines and the second set of lines is located. According to some embodiments, a wireless power receive coil and a rectifier circuit can be used in forming a capacitor sensor, to sense the capacitance between the receive and transmit coils for better alignment between the two coils. Other embodiments are also provided.

公开(公告)号：US20190386525A1

公开(公告)日：2019-12-19

申请号：US16368761

申请日：2019-03-28

Applicant: Integrated Device Technology, Inc.

Inventor： Nicholaus Wayne SMITH ,  Chan Young JEONG

IPC: H02J50/90 ,  H02J50/12 ,  H02M7/12 ,  H02J7/02

Abstract: In accordance with some embodiments of the present invention, a method of controlling and correcting negative modulation is presented. In some embodiments, a method of operating a receiver includes detecting a negative modulation and adjusting one or more parameters to force a transition to a positive modulation. The parameters can be the output voltage Vout, the transmitter input voltage Vin, or receiver structural elements.

公开(公告)号：US20190356167A1

公开(公告)日：2019-11-21

申请号：US16369523

申请日：2019-03-29

Applicant: Integrated Device Technology, Inc.

Inventor： Nicholaus Wayne SMITH ,  Tao QI ,  Jiangjian HUANG ,  Chan Young JEONG ,  Gustavo James MEHAS

IPC: H02J50/12 ,  H02J7/02 ,  H04B5/00 ,  H01F38/14

Abstract: A wireless power circuit is presented that includes a transmit coil coupled to a first node; a receive coil coupled to the first node; a switch circuit coupled to the transmit coil and the receive coil opposite the first node, the switch switching the transmit coil to a second node in a transmit mode and switching the receive coil to the second node in a receive mode; a controller coupled to the first node and the second node, the controller coupled to provide signals to the switch circuit; and a self-start circuit coupled to the receive coil (or Tx coil) that automatically selects one of the coils to be used, the self-start circuit providing power to the switch circuit to hold the switch circuit in the receive mode (or predefined coil to be selected by default).

公开(公告)号：US20190386513A1

公开(公告)日：2019-12-19

申请号：US16384765

申请日：2019-04-15

Applicant: Integrated Device Technology, Inc.

Inventor： Amit D. BAVISI ,  Gopinath AKKINEPALLY ,  Aihua LEE ,  Tao QI ,  Christopher STEPHENS ,  Gustavo MEHAS ,  Nicholaus SMITH ,  Chan Young JEONG ,  Changjae KIM ,  Hojun SHIN

IPC: H02J50/10 ,  H02J50/80 ,  G06F21/32 ,  H04W12/06 ,  B60R25/20 ,  H02J7/02

Abstract: A wireless power transmitter and a receiver device can communicate through a bi-directional communications channel that uses the wireless power signal transmitted from the transmitter to the receiver. Embodiments of the present invention can provide firmware/software updates to wireless power transmitter, vehicle ignition, security lock systems, data back-up and storage systems, charging node statistics and updates, E-commerce applications, contextual awareness applications, interactive user experiences, and applications to wearables and other devices

公开(公告)号：US20190334391A1

公开(公告)日：2019-10-31

申请号：US16376955

申请日：2019-04-05

Applicant: Integrated Device Technology, Inc.

Inventor： Tao QI ,  Gustavo MEHAS ,  Chan Young JEONG ,  Xinyun GU ,  Nicholaus Wayne SMITH ,  Amit D. BAVISI ,  Daryl Jay SUGASAWARA ,  Aihua LEE ,  Tianze KAN

IPC: H02J50/90 ,  H02J50/10 ,  H02J7/02 ,  H01F27/29

Abstract: In accordance with embodiments of the present invention, a coil design for the transmission of wireless power. In some embodiments, the coil can include a winding with one or more turns of conductive traces mounted on a substrate, wherein the one or more turns include characteristics that enhance operation of the coil. In some embodiments, the winding includes a transmit coil and a receive coil, each coupled to terminals that provide for a transmit functionality and a receive functionality. In some embodiments, the traces are varied in width and/or thickness in order to optimize the inductance and the coil resistance. In some embodiments, parameters of a control circuit coupled to the coil to affect a transmit functionality or a receive functionality can be optimized.