公开(公告)号：US09608481B2

公开(公告)日：2017-03-28

申请号：US14300974

申请日：2014-06-10

Applicant: NXP B.V.

Inventor： Klaas Wortel ,  Johan Somberg ,  Tarik Naass

IPC: H01F27/42

CPC classification number: H02J50/90 ,  H02J7/025 ,  H02J50/12 ,  H02J50/60

Abstract: One example discloses an inductive power supply device, comprises: an inductive coupler including a resonant circuit having a first resonant state in response to an object at a first distance from the inductive power supply, and a second resonant state in response to the object at a second distance from the inductive power supply; a driver circuit coupled to send a first power-level to the inductive coupler when in a charge-object state and to send a second power-level to the inductive coupler when in a detect-object state, wherein the second power-level is less than the first power-level; and an object detector coupled to detect the first and second resonant states and place the driver circuit in the charge-object state in response to the first resonant state, and place the driver circuit in the detect-object state in response to the second resonant state.

公开(公告)号：US20150357825A1

公开(公告)日：2015-12-10

申请号：US14300974

申请日：2014-06-10

Applicant: NXP B.V.

Inventor： Klaas Wortel ,  Johan Somberg ,  Tarik Naass

IPC: H02J5/00

CPC classification number: H02J50/90 ,  H02J7/025 ,  H02J50/12 ,  H02J50/60

Abstract: One example discloses an inductive power supply device, comprises: an inductive coupler including a resonant circuit having a first resonant state in response to an object at a first distance from the inductive power supply, and a second resonant state in response to the object at a second distance from the inductive power supply; a driver circuit coupled to send a first power-level to the inductive coupler when in a charge-object state and to send a second power-level to the inductive coupler when in a detect-object state, wherein the second power-level is less than the first power-level; and an object detector coupled to detect the first and second resonant states and place the driver circuit in the charge-object state in response to the first resonant state, and place the driver circuit in the detect-object state in response to the second resonant state.

Abstract translation: 一个实例公开了一种感应电源装置，包括：电感耦合器，包括响应于距离感应电源的第一距离处的物体具有第一谐振状态的谐振电路，以及响应于物体在第一谐振状态 距感应电源的第二距离; 驱动器电路，其在处于电荷对象状态时耦合以向所述电感耦合器发送第一功率电平，并且在处于检测对象状态时向所述电感耦合器发送第二功率电平，其中所述第二功率电平较小 比第一功率级; 以及物体检测器，其耦合以检测第一和第二谐振状态，并且响应于第一谐振状态将驱动器电路置于充电对象状态，并且响应于第二谐振状态将驱动器电路置于检测对象状态 。

公开(公告)号：US10097140B1

公开(公告)日：2018-10-09

申请号：US15612871

申请日：2017-06-02

Applicant: NXP B.V.

Inventor： Klaas Wortel ,  Henri Verhoeven ,  Theo Thurlings

IPC: H03F1/30 ,  H03F3/04

Abstract: Embodiments of a method for amplifier calibration and an amplifier system are described. In one embodiment, a method for amplifier calibration involves amplifying an input signal using a first amplifier connected between an input terminal and an output terminal to generate an output signal and digitally performing offset calibration on a second amplifier coupled in parallel with the first amplifier between the input terminal and the output terminal while amplifying the input signal using the first amplifier. Other embodiments are also described.

公开(公告)号：US10013013B1

公开(公告)日：2018-07-03

申请号：US15715519

申请日：2017-09-26

Applicant: NXP B.V.

Inventor： Klaas Wortel ,  Jan Inghels ,  Henri Verhoeven

IPC: G05F3/30 ,  G05F3/10 ,  H03K5/003

CPC classification number: G05F3/10 ,  G05F3/30 ,  H03F3/45475 ,  H03F3/45995 ,  H03F2203/45048 ,  H03K5/003

Abstract: One example discloses a voltage reference, including: a bandgap circuit core having a first intermediate bandgap voltage output, a second intermediate bandgap voltage output, and a bandgap voltage reference output; an amplifier having a first input, a second input, an input offset, an output, and an input_offset_trim; a trim controller; a switch matrix coupled between the bandgap circuit, the amplifier and the trim controller; wherein the switch matrix has a functional configuration and a calibration configuration; wherein in the functional configuration of the switch matrix, the first intermediate bandgap voltage output is coupled to the first input of the amplifier and the second intermediate bandgap voltage output is coupled to the second input of the amplifier; and wherein in response to the calibration configuration of the switch matrix, the trim controller is coupled to adjust the input offset of the amplifier using the input_offset_trim.