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公开(公告)号：US09503023B2
公开(公告)日：2016-11-22
申请号：US14676411
申请日：2015-04-01
Applicant: NXP B.V.
Inventor： Fré Jorrit Jorritsma , Mattheus Johan Koerts , Fred Mostert
CPC classification number: H03F1/0205 , H03F3/181 , H03F3/185 , H03F3/211 , H03F3/217 , H03F3/2173 , H03F3/2175 , H03F2200/03 , H03F2200/129 , H03F2200/351 , H03F2203/21142
Abstract: One example discloses a class-D amplifier apparatus, comprising: an amplifier circuit, having a set of input terminals, a set of output terminals, a quiescent circuit configuration, and an active circuit configuration; an amplifier control device, coupled to the amplifier circuit; wherein the amplifier control device is configured to place the amplifier circuit in the quiescent circuit configuration before measuring a voltage between the set of output terminals; wherein the amplifier control device is configured to add the output terminals voltage from the set of input terminals before placing the amplifier circuit in the active circuit configuration.
Abstract translation: 一个例子公开了一种D类放大器装置，包括：放大器电路，具有一组输入端子，一组输出端子，静态电路配置和有源电路配置; 放大器控制装置，耦合到放大器电路; 其中所述放大器控制装置被配置为在测量所述一组输出端子之间的电压之前将所述放大器电路放置在所述静态电路配置中; 其中所述放大器控制装置被配置为在将所述放大器电路置于所述有源电路配置之前，将所述输入端子组的输出端子电压相加。
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公开(公告)号：US20160294326A1
公开(公告)日：2016-10-06
申请号：US14676411
申请日：2015-04-01
Applicant: NXP B.V.
Inventor： Fré Jorrit Jorritsma , Mattheus Johan Koerts , Fred Mostert
CPC classification number: H03F1/0205 , H03F3/181 , H03F3/185 , H03F3/211 , H03F3/217 , H03F3/2173 , H03F3/2175 , H03F2200/03 , H03F2200/129 , H03F2200/351 , H03F2203/21142
Abstract: One example discloses a class-D amplifier apparatus, comprising: an amplifier circuit, having a set of input terminals, a set of output terminals, a quiescent circuit configuration, and an active circuit configuration; an amplifier control device, coupled to the amplifier circuit; wherein the amplifier control device is configured to place the amplifier circuit in the quiescent circuit configuration before measuring a voltage between the set of output terminals; wherein the amplifier control device is configured to add the output terminals voltage from the set of input terminals before placing the amplifier circuit in the active circuit configuration.
Abstract translation: 一个例子公开了一种D类放大器装置，包括：放大器电路，具有一组输入端子，一组输出端子，静态电路配置和有源电路配置; 放大器控制装置，耦合到放大器电路; 其中所述放大器控制装置被配置为在测量所述一组输出端子之间的电压之前将所述放大器电路放置在所述静态电路配置中; 其中所述放大器控制装置被配置为在将所述放大器电路置于所述有源电路配置之前，将所述输入端子组的输出端子电压相加。
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公开(公告)号：US20160211811A1
公开(公告)日：2016-07-21
申请号：US14597940
申请日：2015-01-15
Applicant: NXP B.V.
Inventor： Mattheus Johan Koerts , Fred Mostert , Fre Jorrit Jorritsma
CPC classification number: H03F1/523 , H03F1/52 , H03F3/183 , H03F3/211 , H03F3/2171 , H03F3/2173 , H03F2200/03 , H03F2200/351 , H03F2203/21139
Abstract: A current limiter for Class-D amplifiers measures and stores a position of an over-current event. By comparing the stored position, output signals can be selectively inverted. As a result, the Class-D amplifier remains in a defined modulation scheme even during period of current limiting.
Abstract translation: D类放大器的限流器测量并存储过电流事件的位置。 通过比较存储的位置，可以选择性地反转输出信号。 结果，即使在电流限制期间，D类放大器仍然保持在限定的调制方案中。
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公开(公告)号：US10243533B1
公开(公告)日：2019-03-26
申请号：US15891790
申请日：2018-02-08
Applicant: NXP B.V.
Inventor： Marco Berkhout , Fred Mostert , Massimo Ciacci , Mattheus Johan Koerts , Martin Kessel
Abstract: Aspects are directed to an amplifier circuit including a signal processing circuit and a calibration circuit. In certain specific embodiments, the signal processing circuit includes a signal combiner and a closed-loop feedback path, and the signal processing circuit is designed to provide a loop transfer function for a derived signal partly representing contributions from an audio input signal, a control or pilot signal having a target frequency range, and a calibration signal. The signal combiner is designed to combine aspects of the control or pilot signal and aspects of the audio input signal, and the calibration circuit is designed to adjust an effective gain of the derived signal in response to whether a unity-gain frequency of a signal in the closed-loop feedback path, as provided via the loop transfer function, is higher or lower than the target frequency range. Consistent therewith and in yet more specific embodiments, such an amplifier circuit can define the target frequency range relative to the transfer function and an associated unity-gain frequency.
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Patent Agency Ranking
公开(公告)号：US09825028B2
公开(公告)日：2017-11-21
申请号：US14591087
申请日：2015-01-07
Applicant: NXP B.V.
Inventor： Hendrikus van Iersel , Mattheus Johan Koerts
CPC classification number: H01L27/0802 , H01L28/20 , H03F3/2173 , H03M1/0614 , H03M1/12
Abstract: Some embodiments include a resistor that may be used in audio conversion for an ADC. The resistor may be made up of an n-well as well as a p-well polysilicons. The n-well and p-well polysilicons may include a shallow trench isolator. The n-well and p-well components may be in series with other n-well or p-well components respectively. Similarly, multiple n-well components which are in series, may be in parallel with multiple p-well components.
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公开(公告)号：US09520840B2
公开(公告)日：2016-12-13
申请号：US14597940
申请日：2015-01-15
Applicant: NXP B.V.
Inventor： Mattheus Johan Koerts , Fred Mostert , Fre Jorrit Jorritsma
CPC classification number: H03F1/523 , H03F1/52 , H03F3/183 , H03F3/211 , H03F3/2171 , H03F3/2173 , H03F2200/03 , H03F2200/351 , H03F2203/21139
Abstract: A current limiter for Class-D amplifiers measures and stores a position of an over-current event. By comparing the stored position, output signals can be selectively inverted. As a result, the Class-D amplifier remains in a defined modulation scheme even during period of current limiting.
Abstract translation: D类放大器的限流器测量并存储过电流事件的位置。 通过比较存储的位置，可以选择性地反转输出信号。 结果，即使在电流限制期间，D类放大器仍然保持在限定的调制方案中。
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公开(公告)号：US10891933B2
公开(公告)日：2021-01-12
申请号：US16561106
申请日：2019-09-05
Applicant: NXP B.V.
Inventor： Fre Jorrit Jorritsma , Quino Sandifort , Albertus de Man , Mattheus Johan Koerts
IPC: G10K11/178 , H03F3/181 , H03F3/217 , H04R9/06 , H04R29/00
Abstract: An audio processing system is described including an amplifier configured to receive a first audio signal and output the first audio signal to an acoustic transducer comprising a voice coil. A sensor detects a signal corresponding to voice coil current of the acoustic transducer. A controller compares the first audio signal and the detected signal and determines a second audio signal from the comparison. The second audio signal is representative of an external sound source detected via the acoustic transducer. The audio processing system may simultaneously output the first audio signal and receive the second audio signal using the same acoustic transducer.
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公开(公告)号：US20160197592A1
公开(公告)日：2016-07-07
申请号：US14591087
申请日：2015-01-07
Applicant: NXP B.V.
Inventor： Hendrikus van Iersel , Mattheus Johan Koerts
CPC classification number: H01L27/0802 , H01L28/20 , H03F3/2173 , H03M1/0614 , H03M1/12
Abstract: Some embodiments include a resistor that may be used in audio conversion for an ADC. The resistor may be made up of an n-well as well as a p-well polysilicons. The n-well and p-well polysilicons may include a shallow trench isolator. The n-well and p-well components may be in series with other n-well or p-well components respectively. Similarly, multiple n-well components which are in series, may be in parallel with multiple p-well components.
Abstract translation: 一些实施例包括可用于ADC的音频转换的电阻器。 电阻器可以由n阱以及p阱多晶硅构成。 n阱和p阱多晶硅可以包括浅沟槽隔离器。 n阱和p阱组分可以分别与其它n阱或p阱组分串联。 类似地，串联的多个n阱组件可以与多个p阱组件并联。
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公开(公告)号：US09019009B2
公开(公告)日：2015-04-28
申请号：US13860714
申请日：2013-04-11
Applicant: NXP B.V.
Inventor： Frits Anthonie Steenhof , Mattheus Johan Koerts , Skule Pramm
CPC classification number: H03F3/2171 , H03F1/26 , H03F3/217
Abstract: A method of adjusting the frequency or phase of operation of a Class-D amplifier is disclosed. The method comprises making a series of step changes in the frequency or phase to adjust the frequency or phase from a start value to a desired end value, each step change in frequency or phase causing a corresponding disturbance of an output of the Class-D amplifier to produce a series of disturbances, each of which varies from an initial magnitude in first and second senses to exhibit a first peak and then in the first sense to exhibit a second peak. The time between the step changes is selected so that the second peak of each disturbance other than a final disturbance in the series overlaps the first peak of an immediately succeeding disturbance.
Abstract translation: 公开了一种调节D类放大器的工作频率或相位的方法。 该方法包括在频率或相位上进行一系列阶跃变化以将频率或相位从起始值调整到期望的终点值，频率或相位的每个阶跃变化导致D类放大器的输出的相应干扰 以产生一系列扰动，其中的每一个都从第一和第二感测中的初始幅度变化，以表现出第一峰值，然后在第一意义上表现出第二峰值。 选择阶梯变化之间的时间，使得除了串联中的最终扰动之外的每个扰动的第二峰值与紧随其后的干扰的第一峰值重叠。
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