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公开(公告)号：US11146221B2
公开(公告)日：2021-10-12
申请号：US16617030
申请日：2018-04-11
Applicant: Robert Bosch GmbH
Inventor： Fabian Hoffmeister , Gregor Sauer , Josef Plager , Patrick Engl , Thomas Stein
Abstract: The invention relates to a method for protecting a component (6) within an audio device (4) from the exceedance of a maximum internal temperature (TI), wherein a power loss (V) of the component (6) is determined, a measurement temperature (TM) is measured on the component (6), a temperature difference (DT) for the component (6) between the measurement temperature (TM) on the component and the internal temperature (TI) is determined from the power loss (V) by means of a thermal model (14) of the component (6), the internal temperature (TI) is determined as the sum of the measurement temperature (TM) and the temperature difference (DT), a permissible maximum value (VM) for the power loss (V) is determined on the basis of the internal temperature (TM) and known component data (16) of the component (6), and the component (6) is operated in a normal operating mode (N) if the power loss (V) does not exceed the maximum value (VM) or the component (6) is otherwise operated in reduced-power economy operating mode (S) such that the power loss (V) is limited to the maximum value (VM). An audio apparatus (2), having an audio device (4) that internally contains a component (6) that should be protected from the exceedance of a maximum internal temperature (TI), contains a protection module (8) for carrying out the method according to the invention.
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公开(公告)号：US11108365B2
公开(公告)日：2021-08-31
申请号：US16617040
申请日：2018-04-11
Applicant: Robert Bosch GmbH
Inventor： Fabian Hoffmeister , Gregor Sauer , Josef Plager , Markus Mandl , Thomas Stein , Patrick Engl
Abstract: The invention relates to a method for operating a class-D amplifier (2) for an audio signal (4), which class-D amplifier contains an output stage (10) and a signal-processing unit (12) in a signal path (6), wherein a voltage (U) of at least two magnitudes (U1, U2) is provided for the output stage (10), a voltage requirement (B) of the output stage (10) for the audio signal (4) is predictively determined from the audio signal (4) at a measurement location (14) before the signal-processing unit (12), a magnitude (U1, U2) that is minimally sufficient for the voltage requirement (B) is selected on the basis of the voltage requirement (B) and said magnitude is applied to the output stage (10) before the amplification. A class-D amplifier (2) for an audio signal (4), having a signal path (6), which has an output stage (10) and a signal-processing unit (12), contains a voltage source (16) for the output stage (10) having a voltage (U) of at least two magnitudes (U1, U2), a measurement location (14) before the signal-processing unit (12), and a control and evaluation unit (18) for predictively determining a voltage requirement (B) for the output stage (10) for the proper amplification of the audio signal (4) from the audio signal (4) at the measurement location (14), wherein the control and evaluation unit (18) selects a magnitude (U1, U2) that is minimally sufficient for the voltage requirement (B) on the basis of the voltage requirement (B) and applies said magnitude to the output stage (10) before the amplification.
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3.发明授权Amplifier arrangement comprising a master amplifier and at least one slave amplifier 有权放大器装置包括主放大器和至少一个从放大器公开(公告)号：US09515620B2
公开(公告)日：2016-12-06
申请号：US14598343
申请日：2015-01-16
Applicant: Robert Bosch GmbH
Inventor： Josef Plager , Patrick Engl , Thomas Stein
CPC classification number: H03F3/183 , H03F3/181 , H03F3/211 , H03F3/217 , H03F3/2178 , H03F3/68 , H03F2200/03 , H03F2200/129 , H03F2200/171 , H03F2200/432
Abstract: An amplifier arrangement for amplifying at least one first and one second audio input signal. In one embodiment, the arrangement includes a master amplifier designed as a class D amplifier. The first audio input signal is applied to the master audio input and a master audio output signal is applied to the master audio output. The arrangement also includes a master feedback loop; thus enabling the master amplifier to be designed as a self-oscillating class D amplifier having a master oscillation frequency, at least one slave amplifier, a slave feedback loop, wherein a slave audio output signal or signal portions thereof are fed back into a slave audio input, and a master-slave coupling loop, wherein the master audio output signal or signal portions thereof is coupled into the slave audio input, so that the slave amplifier has the master oscillation frequency as its oscillation frequency.
Abstract translation: 一种用于放大至少一个第一和一个第二音频输入信号的放大器装置。 在一个实施例中，该装置包括被设计为D类放大器的主放大器。 第一音频输入信号被施加到主音频输入，并且主音频输出信号被施加到主音频输出。 该装置还包括主反馈回路; 从而使得主放大器被设计为具有主振荡频率的自激振荡D类放大器，至少一个从放大器，从反馈回路，其中从属音频输出信号或其信号部分被反馈到从属音频 输入和主从耦合回路，其中主音频输出信号或其信号部分耦合到从属音频输入，使得从放大器具有主振荡频率作为其振荡频率。
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公开(公告)号：US09515619B2
公开(公告)日：2016-12-06
申请号：US14598331
申请日：2015-01-16
Applicant: Robert Bosch GmbH
Inventor： Josef Plager , Patrick Engl , Thomas Stein
CPC classification number: H03F3/181 , H03F2200/321 , H03G7/007 , H03G11/008
Abstract: An amplifier arrangement for amplifying an audio input signal AES into an audio output signal AAS, having a conditioning apparatus for converting the audio input signal AES into a conditioned intermediate signal ZS. The conditioning apparatus includes an audio input interface for accepting the audio input signal and a digital data processing device. The amplifier arrangement also includes an amplifier apparatus for amplifying the intermediate signal ZS into the audio output signal AAS and the amplifier apparatus has at least one operating voltage BS. The amplifier arrangement also includes a limiting module for limiting the audio output signal AAS by changing a gain parameter VK.
Abstract translation: 一种用于将音频输入信号AES放大成音频输出信号AAS的放大器装置，具有用于将音频输入信号AES转换成调节中间信号ZS的调节装置。 调节装置包括用于接受音频输入信号的音频输入接口和数字数据处理装置。 放大器装置还包括用于将中间信号ZS放大到音频输出信号AAS的放大器装置，并且放大器装置具有至少一个工作电压BS。 放大器装置还包括限制模块，用于通过改变增益参数VK来限制音频输出信号AAS。
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公开(公告)号：US09496829B2
公开(公告)日：2016-11-15
申请号：US14598320
申请日：2015-01-16
Applicant: Robert Bosch GmbH
Inventor： Josef Plager , Patrick Engl , Thomas Stein
CPC classification number: H03F3/185 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F2200/03 , H03F2200/171
Abstract: An amplifier arrangement with a Class D design is proposed which has a low-pass filter device comprising a first inductor and a second inductor The first inductor is arranged between a first load output and a load and the second inductor is arranged between a second load output and the load. The first and second inductors are coupled to one another so that the total inductance of the two inductors is greater than the sum of the individual inductances of the two inductors and also less than or equal to 1.95 times the sum of the individual inductances of the two inductors.
Abstract translation: 提出了具有D类设计的放大器装置，其具有包括第一电感器和第二电感器的低通滤波器装置。第一电感器布置在第一负载输出和负载之间，并且第二电感器被布置在第二负载输出 和负载。 第一和第二电感器彼此耦合，使得两个电感器的总电感大于两个电感器的各个电感的总和，并且小于或等于两个电感器的各个电感之和的1.95倍 电感器。
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Patent Agency Ranking
公开(公告)号：US20220302886A1
公开(公告)日：2022-09-22
申请号：US17698640
申请日：2022-03-18
Applicant: Robert Bosch GmbH
Inventor： Markus Mandl , Gregor Sauer , Thomas Stein
Abstract: In the field of audio amplifiers, the prior art for high output power levels is now to use class D technology. In this technology, audio signals are converted into a pulsed signal.
An audio amplifier 1 is proposed, with a modulator section 4 for accepting an input signal and outputting two intermediate signals, wherein the modulator section 4 is designed to generate the intermediate signals by modulating the input signal, with an amplifier section 8 for accepting the two intermediate signals and outputting two amplified signals, wherein the amplifier section 8 is designed to generate the two amplified signals by amplifying the two intermediate signals, the amplifier section having two power stages 11;12, with an end section 21 for accepting the two amplified signals and for outputting an output signal for a loudspeaker device 2, wherein the audio amplifier 1 can be switched between parallel operation and bridge operation.-
公开(公告)号：US20210135638A1
公开(公告)日：2021-05-06
申请号：US16617040
申请日：2018-04-11
Applicant: Robert Bosch GmbH
Inventor： Fabian Hoffmeister , Gregor Sauer , Josef Plager , Markus Mandl , Thomas Stein , Patrick Engl
Abstract: The invention relates to a method for operating a class-D amplifier (2) for an audio signal (4), which class-D amplifier contains an output stage (10) and a signal-processing unit (12) in a signal path (6), wherein a voltage (U) of at least two magnitudes (U1, U2) is provided for the output stage (10), a voltage requirement (B) of the output stage (10) for the audio signal (4) is predictively determined from the audio signal (4) at a measurement location (14) before the signal-processing unit (12), a magnitude (U1, U2) that is minimally sufficient for the voltage requirement (B) is selected on the basis of the voltage requirement (B) and said magnitude is applied to the output stage (10) before the amplification. A class-D amplifier (2) for an audio signal (4), having a signal path (6), which has an output stage (10) and a signal-processing unit (12), contains a voltage source (16) for the output stage (10) having a voltage (U) of at least two magnitudes (U1, U2), a measurement location (14) before the signal-processing unit (12), and a control and evaluation unit (18) for predictively determining a voltage requirement (B) for the output stage (10) for the proper amplification of the audio signal (4) from the audio signal (4) at the measurement location (14), wherein the control and evaluation unit (18) selects a magnitude (U1, U2) that is minimally sufficient for the voltage requirement (B) on the basis of the voltage requirement (B) and applies said magnitude to the output stage (10) before the amplification.
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公开(公告)号：US10530251B1
公开(公告)日：2020-01-07
申请号：US16202377
申请日：2018-11-28
Applicant: Robert Bosch GmbH
Inventor： Fabian Hoffmeister , Josef Plager , Thomas Stein
Abstract: Converter for the converting a DC input voltage into a DC output voltage, having at least one inductance and capacitance, which are interconnected in a power-conducting path, wherein a current inductance value of the inductance depends on a current value of a current flowing through the coil, having a regulator for regulating the DC output voltage to a setpoint, wherein the regulator comprises a parameter set that determines its regulation behavior, having a measurement module for determining at least one characteristic value of at least one characteristic parameter of the converter, and the converter contains a plurality of interchangeable parameter sets for the regulator, wherein each one of the parameter sets in the regulator can be activated, and having a control module for exchanging and activating each of the parameter sets in the regulator as a function of at least one of the characteristic values.
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公开(公告)号：US20150207471A1
公开(公告)日：2015-07-23
申请号：US14598331
申请日：2015-01-16
Applicant: Robert Bosch GmbH
Inventor： Josef Plager , Patrick Engl , Thomas Stein
IPC: H03F3/181
CPC classification number: H03F3/181 , H03F2200/321 , H03G7/007 , H03G11/008
Abstract: An amplifier arrangement for amplifying an audio input signal AES into an audio output signal AAS, having a conditioning apparatus for converting the audio input signal AES into a conditioned intermediate signal ZS. The conditioning apparatus includes an audio input interface for accepting the audio input signal and a digital data processing device. The amplifier arrangement also includes an amplifier apparatus for amplifying the intermediate signal ZS into the audio output signal AAS and the amplifier apparatus has at least one operating voltage BS. The amplifier arrangement also includes a limiting module for limiting the audio output signal AAS by changing a gain parameter VK.
Abstract translation: 一种用于将音频输入信号AES放大成音频输出信号AAS的放大器装置，具有用于将音频输入信号AES转换成调节中间信号ZS的调节装置。 调节装置包括用于接受音频输入信号的音频输入接口和数字数据处理装置。 放大器装置还包括用于将中间信号ZS放大到音频输出信号AAS的放大器装置，并且放大器装置具有至少一个工作电压BS。 放大器装置还包括限制模块，用于通过改变增益参数VK来限制音频输出信号AAS。
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公开(公告)号：US10411594B1
公开(公告)日：2019-09-10
申请号：US16202361
申请日：2018-11-28
Applicant: Robert Bosch GmbH
Inventor： Thomas Stein , Fabian Hoffmeister , Josef Plager
Abstract: A converter is provided for converting a DC input voltage (UE) into a DC output voltage (UA). The converter includes a regulator for regulating the DC output voltage (UA) to a target value (UAS), wherein the regulator comprises a parameter set that determines the regulation behavior thereof. The converter includes a measurement module for determining at least one characteristic value (K) of at least one characteristic parameter of the converter, and at least two interchangeable parameter sets for the regulator Each one of the parameter sets can be activated in the regulator, wherein a first one of the parameter sets has a slower regulation behavior with regard to the DC output voltage (UA) than a second of the parameter sets. The converter includes a control module for the exchange and activation of each of the parameter sets in the regulator depending on at least one of the characteristic parameters.
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