公开(公告)号：US10181849B1

公开(公告)日：2019-01-15

申请号：US15825797

申请日：2017-11-29

Applicant: NXP B.V.

Inventor： Tarik Naass ,  Matthias Rose ,  Henricus Cornelis Johannes Buthker ,  Arnoud Pieter Van Der Wel

IPC: G05F3/26 ,  H03K17/687 ,  H02M3/07

Abstract: A control circuit provides a signal to a control terminal of the transistor to control the conductivity of the transistor. The control circuit includes a voltage-to-current converter that provides an indication of the control terminal-to-current terminal voltage of a transistor. The control circuit includes control circuitry that uses the indication from the voltage-to-current converter in controlling the current applied to the control terminal.

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 。