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公开(公告)号：US09520782B2
公开(公告)日：2016-12-13
申请号：US14182798
申请日：2014-02-18
Applicant: Cirrus Logic, Inc.
Inventor： Ullas Pazhayaveetil , Jeffrey May , Anu Chakravarty , Gautham Kamath , John Tucker , Christian Larsen
CPC classification number: H02M3/158 , G01R21/06 , G01R27/2611 , G06F1/3203 , H02M3/156 , H03F3/187 , H03F3/2175 , H03G3/004
Abstract: Audio amplification may be improved by controlling an audio amplifier based on the audio signal being amplified. For example, when the audio signal level increases or decreases, a boost voltage provided to an audio amplifier by a boost converter may also be increased or decreased. In another example, when the audio signal level decrease below a certain level, the audio amplifier may be switched from amplifying the audio signal with a boost converter input to amplifying the audio signal with a low voltage input. Control of the audio amplifier may be implemented in a digital boost converter controller coupled to the boost converter and/or the audio amplifier.
Abstract translation: 可以通过基于被放大的音频信号控制音频放大器来改善音频放大。 例如，当音频信号电平增加或减小时，升压转换器提供给音频放大器的升压电压也可以增加或减小。 在另一示例中，当音频信号电平降低到低于某一水平时，可以利用升压转换器输入将音频放大器切换成放大音频信号，以便以低电压输入放大音频信号。 可以在耦合到升压转换器和/或音频放大器的数字升压转换器控制器中实现音频放大器的控制。
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公开(公告)号：US09912312B2
公开(公告)日：2018-03-06
申请号：US14182850
申请日：2014-02-18
Applicant: Cirrus Logic, Inc.
Inventor： Ullas Pazhayaveetil , Jeffrey May , Gautham Kamath , John Christopher Tucker , Christian Larsen
CPC classification number: H02M3/158 , G01R21/06 , G01R27/2611 , G06F1/3203 , H02M3/156 , H03F3/187 , H03F3/2175 , H03G3/004
Abstract: A controller of a boost converter may be configured to dynamically adjust conditions within the boost converter by monitoring conditions in the boost converter. For example, the controller may determine an current inductance value for an inductor of the boost converter by monitoring a current through the inductor. When the inductance value of the inductor is known, a slope compensation value may be used in determining a transition time between charging the inductor of the boost converter and discharging the inductor.
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公开(公告)号：US20150032396A1
公开(公告)日：2015-01-29
申请号：US14182850
申请日：2014-02-18
Applicant: Cirrus Logic, Inc.
Inventor： Ullas Pazhayaveetil , Jeffrey May , Gautham Kamath , John Christopher Tucker , Christian Larsen
IPC: G01R27/26
CPC classification number: H02M3/158 , G01R21/06 , G01R27/2611 , G06F1/3203 , H02M3/156 , H03F3/187 , H03F3/2175 , H03G3/004
Abstract: A controller of a boost converter may be configured to dynamically adjust conditions within the boost converter by monitoring conditions in the boost converter. For example, the controller may determine an current inductance value for an inductor of the boost converter by monitoring a current through the inductor. When the inductance value of the inductor is known, a slope compensation value may be used in determining a transition time between charging the inductor of the boost converter and discharging the inductor.
Abstract translation: 升压转换器的控制器可以被配置为通过监视升压转换器中的条件来动态地调节升压转换器内的状况。 例如，控制器可以通过监视通过电感器的电流来确定升压转换器的电感器的电流电感值。 当电感器的电感值已知时，可以使用斜率补偿值来确定对升压转换器的电感器充电和放电电感器之间的转换时间。
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公开(公告)号：US20150030183A1
公开(公告)日：2015-01-29
申请号：US14182798
申请日：2014-02-18
Applicant: CIRRUS LOGIC, INC.
Inventor： Ullas Pazhayaveetil , Jeffrey May , Anu Chakravarty , Gautham Kamath , John Tucker , Christian Larsen
IPC: H03G3/00
CPC classification number: H02M3/158 , G01R21/06 , G01R27/2611 , G06F1/3203 , H02M3/156 , H03F3/187 , H03F3/2175 , H03G3/004
Abstract: Audio amplification may be improved by controlling an audio amplifier based on the audio signal being amplified. For example, when the audio signal level increases or decreases, a boost voltage provided to an audio amplifier by a boost converter may also be increased or decreased. In another example, when the audio signal level decrease below a certain level, the audio amplifier may be switched from amplifying the audio signal with a boost converter input to amplifying the audio signal with a low voltage input. Control of the audio amplifier may be implemented in a digital boost converter controller coupled to the boost converter and/or the audio amplifier.
Abstract translation: 可以通过基于被放大的音频信号控制音频放大器来改善音频放大。 例如，当音频信号电平增加或减小时，升压转换器提供给音频放大器的升压电压也可以增加或减小。 在另一示例中，当音频信号电平降低到低于某一水平时，可以利用升压转换器输入将音频放大器切换成放大音频信号，以便以低电压输入放大音频信号。 可以在耦合到升压转换器和/或音频放大器的数字升压转换器控制器中实现音频放大器的控制。
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