公开(公告)号：US20220329150A1

公开(公告)日：2022-10-13

申请号：US17658342

申请日：2022-04-07

Applicant: NXP B.V.

Inventor： Wouter van der Heijden ,  Edwin Schapendonk ,  Henricus Cornelis Johannes Buthker ,  Henri Verhoeven ,  Oswald Moonen ,  Ton van Deursen

IPC: H02M3/04

Abstract: A controller for a DC-DC converter that includes an inductor. The DC-DC converter has three phases of operation: a first phase, in which an input voltage charges the inductor; a second phase, in which the inductor discharges to a load; and a third phase, in which the inductor is disconnected from the load and in which the input voltage does not charge the inductor. The controller is configured to set a control-factor based on the input voltage of the DC-DC converter, and set the duration of the third phase based on the control-factor and the sum of the duration of the first phase and the second phase.

公开(公告)号：US09769898B1

公开(公告)日：2017-09-19

申请号：US15373024

申请日：2016-12-08

Applicant: NXP B.V.

Inventor： Henricus Cornelis Johannes Buthker

IPC: H05B37/02 ,  H05B33/08 ,  B60Q1/14

CPC classification number: H05B33/0845 ,  B60Q1/1423 ,  B60Q2300/114 ,  B60Q2300/312 ,  B60Q2300/314 ,  B60Q2300/42 ,  H05B33/083

Abstract: An LED controller includes: an absolute value calculator to calculate an initial light intensity value for a desired light output curve; a fade-in calculator to calculate a first light intensity value; and a fade-out calculator to calculate a second light intensity value. The LED controller also includes processing logic configured to: select one of the fade-in calculator and the fade-out calculator as a selected incremental value calculator, based on a directional indicator that indicates whether a fade-in light output effect or a fade-out light output effect is requested, initialize coefficients of the absolute value calculator and the selected incremental value calculator with a set of coefficient values associated with the desired light output curve, and output a set of voltage levels to a set of pulse width modulation (PWM) generators that output a set of PWM signals, which control light output of a string of LEDs.

公开(公告)号：US20170018967A1

公开(公告)日：2017-01-19

申请号：US15208116

申请日：2016-07-12

Applicant: NXP B.V.

Inventor： Marco Berkhout ,  Henricus Cornelis Johannes Buthker ,  Johannes Petrus Maria van Lammeren

IPC: H02J50/12

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025

Abstract: A wireless electrical power receiver for inductively generating alternating current power in a wireless electrical power transfer system having a transmission resonant frequency, the receiver comprising a receiver resonator having a receiver resonant frequency, the receiver resonator constructed and arranged such that the receiver resonant frequency is detuned from the transmission resonant frequency.

Abstract translation: 一种用于在具有发射谐振频率的无线电力传输系统中感应地产生交流电力的无线电力接收器，所述接收机包括具有接收器谐振频率的接收器谐振器，所述接收器谐振器被构造和布置成使得接收器谐振频率失谐 从传输谐振频率。

公开(公告)号：US20230291312A1

公开(公告)日：2023-09-14

申请号：US17692297

申请日：2022-03-11

Applicant: NXP B.V.

Inventor： Henricus Cornelis Johannes Buthker

IPC: H02M3/158 ,  H02M3/157 ,  H02M1/08

CPC classification number: H02M3/158 ,  H02M3/157 ,  H02M1/08

Abstract: A boost converter comprises a comparator circuit including: a first input port configured to receive an off-time sawtooth voltage a second input port configured to receive an on-time sawtooth voltage, the comparator circuit comparing the off-time sawtooth voltage and on-time sawtooth voltage to generate trigger signal including a differential ripple voltage that is output by an output port to a power stage circuit. The boost converter further comprises a reference voltage source that provides a reference voltage to the first input port and a feedback circuit that provides the on-time sawtooth voltage to the second port, wherein the differential ripple voltage emulates an inductor current or voltage of an output capacitor of the power stage circuit.

公开(公告)号：US09608514B2

公开(公告)日：2017-03-28

申请号：US14613235

申请日：2015-02-03

Applicant: NXP B.V.

Inventor： Henricus Cornelis Johannes Buthker ,  Matthias Rose ,  Philip Rutter ,  Jan Sonsky

IPC: H02M7/06 ,  H02H9/08 ,  H02M1/42 ,  H02M3/155 ,  H02M1/00

CPC classification number: H02M1/4225 ,  H02M3/155 ,  H02M7/06 ,  H02M2001/0048 ,  Y02B70/126 ,  Y02B70/1491 ,  Y02P80/112

Abstract: Embodiments relate to a diode circuit which uses a Schottky diode. A parallel bypass branch has a switch and bypass diode in series. The operation of the switch is dependent on the voltage across the Schottky diode so that the bypass function is only effective when a desired voltage is reached. The diode circuit can be used as a replacement for a single diode, and provides bypass current protection preferably without requiring any external control input.