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1.发明授权公开(公告)号：US09948112B2
公开(公告)日：2018-04-17
申请号：US14499009
申请日：2014-09-26
Applicant: Integrated Device Technology, Inc.
Inventor： Jianbin Hao , Detelin Martchovsky , Chan Young Jeong , Arman Naghavi
CPC classification number: H02J5/005 , H01F38/14 , H02J50/12 , H04B5/0037 , H04B5/0081
Abstract: A wireless power receiver may include a receive coil configured to generate an AC power signal responsive to wireless power transfer from a wireless power transmitter, and control logic configured to detect misalignment of the receive coil and a transmit coil of the wireless power transmitter responsive to a determination of efficiency of wireless power transfer therebetween. A method for operating a wireless power receiver may include detecting misalignment between a receive coil and a transmit coil of a wireless power transmitter responsive to detecting monitoring a value indicative of efficiency of wireless power transfer between the wireless power transmitter and the wireless power receiver, and causing an indication to be provided to a user to assist with correcting the misalignment.
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公开(公告)号：US20210175745A1
公开(公告)日：2021-06-10
申请号：US16709699
申请日：2019-12-10
Applicant: Integrated Device Technology, Inc.
Inventor： Nicholaus Smith , Chan Young Jeong , Detelin Martchovsky , Ashley DeWolfe , Damla Acar
Abstract: A wireless power device is presented that avoids transmit conflicts. The device can include a rectifier circuit coupled to a coil; a transmit driver coupled to the rectifier circuit; a transmit detect circuit configured to detect receipt of transmitted wireless power at the coil; and a controller coupled to the transmit driver and the transmit detect circuit, the controller receiving a signal from the transmit detect circuit and providing an alert of the presence of the transmitted wireless power, the controller activating the transmit driver to transmit wireless power in absence of the signal. The wireless device can determine an operating mode and in a transmit mode determine presence of a received power. If received power is detected an alert can be provided and an off state initiated. If transmit power is not detected the transmit driver can be activated.
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3.发明申请APPARATUSES AND RELATED METHODS FOR DETECTING COIL ALIGNMENT WITH A WIRELESS POWER RECEIVER 有权用无线电源接收器检测线圈对准的装置和相关方法公开(公告)号：US20160094043A1
公开(公告)日：2016-03-31
申请号：US14499009
申请日：2014-09-26
Applicant: Integrated Device Technology, Inc.
Inventor： Jianbin Hao , Detelin Martchovsky , Chan Young Jeong , Arman Naghavi
CPC classification number: H02J5/005 , H01F38/14 , H02J50/12 , H04B5/0037 , H04B5/0081
Abstract: A wireless power receiver may include a receive coil configured to generate an AC power signal responsive to wireless power transfer from a wireless power transmitter, and control logic configured to detect misalignment of the receive coil and a transmit coil of the wireless power transmitter responsive to a determination of efficiency of wireless power transfer therebetween. A method for operating a wireless power receiver may include detecting misalignment between a receive coil and a transmit coil of a wireless power transmitter responsive to detecting monitoring a value indicative of efficiency of wireless power transfer between the wireless power transmitter and the wireless power receiver, and causing an indication to be provided to a user to assist with correcting the misalignment.
Abstract translation: 无线电力接收器可以包括接收线圈，其被配置为响应于来自无线电力发射器的无线功率传输而产生AC电力信号，以及控制逻辑，被配置为检测无线电力发射器的接收线圈和发射线圈的错位， 确定其间无线电力传输的效率。 用于操作无线电力接收器的方法可以包括检测无线电力发射器的接收线圈和发射线圈之间的未对准，其响应于检测到监视指示无线电力发射机和无线电力接收机之间的无线功率传输的效率的值，以及 使得向用户提供指示以辅助校正未对准。
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公开(公告)号：US10938255B2
公开(公告)日：2021-03-02
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 , H03K17/955 , H02J7/02 , H02J50/40
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.
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Patent Agency Ranking
公开(公告)号：US11909220B2
公开(公告)日：2024-02-20
申请号：US16709699
申请日：2019-12-10
Applicant: Integrated Device Technology, Inc.
Inventor： Nicholaus Smith , Chan Young Jeong , Detelin Martchovsky , Ashley DeWolfe , Damla Acar
Abstract: A wireless power device is presented that avoids transmit conflicts. The device can include a rectifier circuit coupled to a coil; a transmit driver coupled to the rectifier circuit; a transmit detect circuit configured to detect receipt of transmitted wireless power at the coil; and a controller coupled to the transmit driver and the transmit detect circuit, the controller receiving a signal from the transmit detect circuit and providing an alert of the presence of the transmitted wireless power, the controller activating the transmit driver to transmit wireless power in absence of the signal. The wireless device can determine an operating mode and in a transmit mode determine presence of a received power. If received power is detected an alert can be provided and an off state initiated. If transmit power is not detected the transmit driver can be activated.
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公开(公告)号：US11374441B2
公开(公告)日：2022-06-28
申请号：US16368761
申请日：2019-03-28
Applicant: Integrated Device Technology, Inc.
Inventor： Nicholaus Wayne Smith , Chan Young Jeong
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.
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公开(公告)号：US11050305B2
公开(公告)日：2021-06-29
申请号：US16378273
申请日：2019-04-08
Applicant: Integrated Device Technology, Inc.
Inventor： Nicholaus Smith , Chan Young Jeong
Abstract: Embodiments herein provide a device for calibrating a voltage driven by a PWM signal for a circuit board. The device includes a controller configured to generate the PWM signal according to a PWM duty cycle value, and a voltage regulator configured to generate an output voltage according to the PWM signal. The controller is further configured to calibrate a relationship between the PWM duty cycle value and the output voltage based on a plurality of configured PWM duty cycle values and a plurality of corresponding voltages measured from the voltage regulator, and drive the circuit board by configuring the PWM duty cycle value based on the calibrated relationship.
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公开(公告)号：US11005306B2
公开(公告)日：2021-05-11
申请号：US16368790
申请日：2019-03-28
Applicant: Integrated Device Technology, Inc.
Inventor： Tao Qi , Gustavo Mehas , Chan Young Jeong , Xinyun Gu , Nicholaus Smith , Amit D. Bavisi , Daryl Sugasawara , Aihua Lee
Abstract: Embodiments described herein provide a wireless power transmitter that dynamically adjusts the deadtime to reduce power loss. Specifically, the wireless power transmitter includes a transistor circuit for switching a first voltage at a first node and a second voltage at a second node, and a LC circuit coupled between the first node and the second node. The wireless power transmitter further includes a controller coupled to the transistor circuit. The controller is configured to determine whether either of the first voltage and the second voltage is negative during a deadtime of switching. The controller is configured to increment or decrement the deadtime by an adjustment amount depending on whether negative voltage is detected.
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公开(公告)号：US10784044B2
公开(公告)日：2020-09-22
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
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.
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