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公开(公告)号：US20180205347A1
公开(公告)日：2018-07-19
申请号：US15925469
申请日：2018-03-19
Inventor： Tejasvi DAS , John L. MELANSON , Eric J. KING
Abstract: An audio amplifier circuit for providing an output signal to an audio transducer may include a power amplifier and a control circuit. The power amplifier may include an audio input for receiving an audio input signal, an audio output for generating the output signal based on the audio input signal, and a power supply input for receiving a power supply voltage, wherein the power supply voltage is variable among at least a first supply voltage and a second supply voltage greater than the first supply voltage and wherein the power supply voltage is generated by a configurable charge pump power supply. The control circuit may be configured to predict, based on one or more characteristics of a signal indicative of the output signal, an occurrence of a condition for changing the power supply voltage, and responsive to predicting the occurrence of the condition, change, at an approximate zero crossing of the signal indicative of the output signal, the power supply voltage.
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公开(公告)号：US20180152101A1
公开(公告)日：2018-05-31
申请号：US15823140
申请日：2017-11-27
Inventor： Eric J. KING , Siddharth MARU
Abstract: A system may include a charge pump configured to boost an input voltage of the charge pump to an output voltage greater than the input voltage and a controller configured to control an output power of the charge pump to ensure that an input current of the charge pump is maintained below a current limit.
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公开(公告)号：US20180120884A1
公开(公告)日：2018-05-03
申请号：US15800743
申请日：2017-11-01
Inventor： Eric J. KING , Christian LARSEN , Aaron J. BRENNAN
CPC classification number: G05F1/5735 , F04D15/0027 , H02M1/32 , H02M3/07 , H03F1/025 , H03F3/2171 , H03F3/72 , H03K17/167
Abstract: A method of increasing a multiplication ratio of a charge pump, the multiplication ratio defining a relationship between an output voltage of the charge pump and an input voltage of the charge pump, comprising: analyzing a first efficiency of the charge pump when the multiplication ratio is at a first ratio, calculating a second efficiency of the charge pump when the multiplication ratio is a second ratio lesser than the first ratio, and based on the first efficiency and the second efficiency, determining at least one of a target output power and a target output voltage at which to change the multiplication ratio from the second ratio to the first ratio.
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Patent Agency Ranking
公开(公告)号：US20180115246A1
公开(公告)日：2018-04-26
申请号：US15650378
申请日：2017-07-14
Inventor： Firas AZRAI , Eric J. KING , Aaron J. BRENNAN
CPC classification number: H02M3/1582 , G06F1/26 , H02J7/0065 , H02M1/143 , H02M3/07 , H02M3/156 , H02M3/158 , H02M3/335 , H02M2001/007
Abstract: In accordance with embodiments of the present disclosure, a system may include a series combination of a boost converter and a power converter coupled together in series, such that the series combination boosts an input voltage to the series combination to an output voltage greater than the input voltage such that a voltage boost provided by the series combination is greater than a voltage boost provided by the boost converter alone. The system may also include an amplifier, wherein an input of the amplifier is coupled to an output of the series combination of the boost converter and the power converter.
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公开(公告)号：US20170310288A1
公开(公告)日：2017-10-26
申请号：US15136548
申请日：2016-04-22
Inventor： Tejasvi DAS , John L. MELANSON , Eric J. KING
IPC: H03F3/183 , H03K5/1536 , H03F3/217 , H04R3/00
CPC classification number: H03F3/183 , H03F1/0222 , H03F1/025 , H03F1/305 , H03F3/187 , H03F3/2175 , H03F2200/03 , H03F2200/102 , H03F2200/228 , H03F2200/321 , H03F2200/471 , H03F2200/48 , H03F2200/504 , H03F2200/511 , H03F2200/78 , H03K5/1536 , H04R3/007
Abstract: An audio amplifier circuit for providing an output signal to an audio transducer may include a power amplifier and a control circuit. The power amplifier may include an audio input for receiving an audio input signal, an audio output for generating the output signal based on the audio input signal, and a power supply input for receiving a power supply voltage, wherein the power supply voltage is variable among at least a first supply voltage and a second supply voltage greater than the first supply voltage. The control circuit may be configured to predict, based on one or more characteristics of a signal indicative of the output signal, an occurrence of a condition for changing the power supply voltage, and responsive to predicting the occurrence of the condition, change, at an approximate zero crossing of the signal indicative of the output signal, the power supply voltage.
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公开(公告)号：US20170207759A1
公开(公告)日：2017-07-20
申请号：US15270631
申请日：2016-09-20
Inventor： Zhaohui HE , Eric J. KING , Siddharth MARU , John L. MELANSON
CPC classification number: H03F3/217 , H03F1/04 , H03F1/34 , H03F3/185 , H03F3/2171 , H03F3/2173 , H03F3/45475 , H03F2200/351 , H03F2200/432 , H03F2203/45034 , H04R3/12 , H04R2420/03
Abstract: A switching power stage for producing a load voltage may include a first processing path having a first output, a second processing path having a second output, a first plurality of switches comprising at least a first switch coupled between the first output and a first load terminal and a second switch coupled between the first output and the second load terminal, a second plurality of switches comprising at least a third switch coupled between the second output and the first load terminal and a fourth switch coupled between the second output and the second load terminal, and a controller configured to control switches in order to generate the load voltage as a function of an input signal such that one of the first switch and the second switch operates in a linear region of operation and one of the third switch and the fourth switch operates in a saturated region of operation for a predominance of a dynamic rage of the load voltage.
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公开(公告)号：US20170207755A1
公开(公告)日：2017-07-20
申请号：US15168680
申请日：2016-05-31
Inventor： Zhaohui HE , Eric J. KING , Siddharth MARU , John L. MELANSON
CPC classification number: H03F1/32 , H03F1/0211 , H03F1/0227 , H03F1/0244 , H03F3/183 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/45076 , H03F2200/03 , H03F2203/45034 , H04R3/00 , H04R2420/03
Abstract: A switching power stage for producing a load voltage at a load output of the switching power stage, wherein the load output comprises a first load terminal having a first load voltage and a second load terminal having a second load voltage such that the load voltage comprises a difference between the first and the second load voltages, that may include: a power converter comprising a power inductor and a plurality of switches, wherein the power converter is configured to drive a power converter output terminal; a linear amplifier configured to drive a linear amplifier output terminal; and a controller for controlling the plurality of switches and the linear amplifier in order to generate the load voltage as a function of an input signal to the controller such that energy delivered to the load output is supplied predominantly by the power converter.
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公开(公告)号：US20170040895A1
公开(公告)日：2017-02-09
申请号：US15229616
申请日：2016-08-05
Inventor： Jeffrey Allen MAY , Eric J. KING
IPC: H02M3/158 , H02M1/32 , G01R19/165 , H02M1/08
CPC classification number: H02M3/158 , G01R19/165 , H02M1/08 , H02M1/32 , H02M3/156 , H02M2001/0009
Abstract: A method may include monitoring an input power supply, monitoring an inductance of an inductor of a boost converter, monitoring one or more other characteristics of the boost converter, and calculating a target peak inductor current based on the input power supply voltage, the inductance, the one or more other characteristics of the boost converter, and a target average current of the inductor during a switching cycle of the boost converter. A method may include monitoring an input power supply voltage, monitoring an inductance of an inductor of a boost converter, monitoring one or more other characteristics of the boost converter, and calculating an average current of the inductor during a switching cycle of the boost converter based on the input power supply voltage, the inductance, the one or more other characteristics of the boost converter, and a peak inductor current of the inductor.
Abstract translation: 一种方法可以包括监测输入电源，监控升压转换器的电感器的电感，监测升压转换器的一个或多个其他特性，以及基于输入电源电压，电感， 升压转换器的一个或多个其他特性，以及升压转换器的开关周期期间的电感器的目标平均电流。 一种方法可以包括监视输入电源电压，监视升压转换器的电感器的电感，监测升压转换器的一个或多个其他特性，以及在升压转换器的开关周期期间计算电感器的平均电流 输入电源电压，电感，升压转换器的一个或多个其他特性以及电感器的峰值电感电流。
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