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：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.

公开(公告)号：US20180156854A1

公开(公告)日：2018-06-07

申请号：US15366419

申请日：2016-12-01

Applicant: NXP B.V.

Inventor： Henri Verhoeven ,  Joop Petrus Maria van Lammeren ,  Oswald Moonen

IPC: G01R27/28 ,  G01N27/02

Abstract: One example discloses a tamper detection device, comprising: a detection circuit, configured to be powered by a near-field-communication (NFC) signal and store a status of a detection element; wherein the detection circuit is configured to set the status to undisturbed in response to an undisturbed state of the detection element; wherein the detection circuit is configured to set the status to disturbed in response to a disturbed state of the detection element; and wherein the detection circuit is configured to electrically report the detection element status in response to a wireless query signal.