JP2015515841A5 - - Google Patents

Download PDF

Info

Publication number
JP2015515841A5
JP2015515841A5 JP2015509373A JP2015509373A JP2015515841A5 JP 2015515841 A5 JP2015515841 A5 JP 2015515841A5 JP 2015509373 A JP2015509373 A JP 2015509373A JP 2015509373 A JP2015509373 A JP 2015509373A JP 2015515841 A5 JP2015515841 A5 JP 2015515841A5
Authority
JP
Japan
Prior art keywords
class
audio amplifier
controller
signal
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2015509373A
Other languages
English (en)
Japanese (ja)
Other versions
JP6325526B2 (ja
JP2015515841A (ja
Filing date
Publication date
Application filed filed Critical
Priority claimed from PCT/EP2013/058450 external-priority patent/WO2013164229A1/en
Publication of JP2015515841A publication Critical patent/JP2015515841A/ja
Publication of JP2015515841A5 publication Critical patent/JP2015515841A5/ja
Application granted granted Critical
Publication of JP6325526B2 publication Critical patent/JP6325526B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

JP2015509373A 2012-04-30 2013-04-24 調整可能ループ・フィルター特性を有するクラスｄオーディオ・アンプ Active JP6325526B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261640565P 2012-04-30 2012-04-30
US61/640,565 2012-04-30
PCT/EP2013/058450 WO2013164229A1 (en) 2012-04-30 2013-04-24 Class d audio amplifier with adjustable loop filter characteristics

Publications (3)

Publication Number Publication Date
JP2015515841A JP2015515841A (ja) 2015-05-28
JP2015515841A5 true JP2015515841A5 (enExample) 2016-06-16
JP6325526B2 JP6325526B2 (ja) 2018-05-16

Family

ID=48289098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015509373A Active JP6325526B2 (ja) 2012-04-30 2013-04-24 調整可能ループ・フィルター特性を有するクラスｄオーディオ・アンプ

Country Status (7)

Country Link
US (1) US9564862B2 (enExample)
EP (1) EP2845314B1 (enExample)
JP (1) JP6325526B2 (enExample)
KR (1) KR102068105B1 (enExample)
CN (1) CN104272589B (enExample)
DK (1) DK2845314T3 (enExample)
WO (1) WO2013164229A1 (enExample)

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8401212B2 (en) 2007-10-12 2013-03-19 Earlens Corporation Multifunction system and method for integrated hearing and communication with noise cancellation and feedback management
WO2009155358A1 (en) 2008-06-17 2009-12-23 Earlens Corporation Optical electro-mechanical hearing devices with separate power and signal components
CN102301747B (zh) 2008-09-22 2016-09-07 依耳乐恩斯公司 用于听觉的平衡电枢装置和方法
EP3758394A1 (en) 2010-12-20 2020-12-30 Earlens Corporation Anatomically customized ear canal hearing apparatus
US9653986B2 (en) 2013-03-15 2017-05-16 Maxim Integrated Products, Inc. Multi-level step-up converter topologies, control and soft start systems and methods
GB2557750B (en) * 2013-10-23 2018-08-22 Cirrus Logic Int Semiconductor Ltd Class-D Amplifier Circuits
US20150222230A1 (en) * 2014-02-03 2015-08-06 Auriga Measurement Systems, LLC Output power tuning using pulse position and pulse width control in a pulse position, pulse width modulation amplifier
US10034103B2 (en) 2014-03-18 2018-07-24 Earlens Corporation High fidelity and reduced feedback contact hearing apparatus and methods
TWI663832B (zh) * 2014-04-02 2019-06-21 南洋理工大學 用於切換電路和切換放大器的停滯時間電路
WO2016011044A1 (en) 2014-07-14 2016-01-21 Earlens Corporation Sliding bias and peak limiting for optical hearing devices
JP6510199B2 (ja) * 2014-08-19 2019-05-08 ローム株式会社 スイッチング回路、オーディオアンプ集積回路、電子機器、電気音響変換素子の駆動方法
US9263992B1 (en) 2014-09-15 2016-02-16 Apple Inc. Class D amplifier with variable switching frequency
US9924276B2 (en) 2014-11-26 2018-03-20 Earlens Corporation Adjustable venting for hearing instruments
US9806682B1 (en) * 2015-02-24 2017-10-31 Marvell International Ltd. Multilevel class-D amplifiers
WO2017059218A1 (en) 2015-10-02 2017-04-06 Earlens Corporation Wearable customized ear canal apparatus
US9602317B1 (en) * 2015-10-12 2017-03-21 Qualcomm Incorporated Apparatus and method for combining currents from passive equalizer in sense amplifier
US10178483B2 (en) 2015-12-30 2019-01-08 Earlens Corporation Light based hearing systems, apparatus, and methods
US11350226B2 (en) 2015-12-30 2022-05-31 Earlens Corporation Charging protocol for rechargeable hearing systems
US10616007B2 (en) * 2016-02-08 2020-04-07 Sony Corporation Transmission device and communication system
US10218312B2 (en) 2016-02-29 2019-02-26 Qualcomm Incorporated Dynamic volume management in audio amplifiers
US20170250654A1 (en) * 2016-02-29 2017-08-31 Qualcomm Incorporated Dynamic dead time management
US10256777B2 (en) 2016-02-29 2019-04-09 Qualcomm Incorporated Audio amplifiers
NL2016605B1 (en) * 2016-04-14 2017-11-02 Axign B V Digital audio converter and amplifier controller.
CN107306117B (zh) * 2016-04-22 2020-11-27 晶豪科技股份有限公司 四元/三元调制选择电路
US10804886B2 (en) * 2016-06-21 2020-10-13 Eagle Harbor Technologies, Inc. High voltage pre-pulsing
US11824454B2 (en) * 2016-06-21 2023-11-21 Eagle Harbor Technologies, Inc. Wafer biasing in a plasma chamber
US11004660B2 (en) 2018-11-30 2021-05-11 Eagle Harbor Technologies, Inc. Variable output impedance RF generator
EP3485562B1 (en) 2016-07-15 2022-05-04 Analog Devices International Unlimited Company Balancing charge pump circuits
EP3510796B1 (en) 2016-09-09 2026-01-14 Earlens Corporation Contact hearing systems, apparatus and methods
WO2018093733A1 (en) 2016-11-15 2018-05-24 Earlens Corporation Improved impression procedure
CN108566101B (zh) 2016-12-16 2020-09-22 台达电子企业管理（上海）有限公司 模块化电源系统
US10110181B2 (en) 2016-12-30 2018-10-23 Texas Instruments Incorporated Class-D amplifier with post filter feedback loop
CN106992756A (zh) * 2017-03-03 2017-07-28 广东欧珀移动通信有限公司 D类功率放大器和音频设备
NL2018617B1 (en) * 2017-03-30 2018-10-10 Axign B V Intra ear canal hearing aid
US10476409B2 (en) * 2017-04-12 2019-11-12 Mitsubishi Electric Corporation Synchronization control system and control device
EP3402070B1 (en) * 2017-05-11 2020-02-12 Infineon Technologies Austria AG Class d audio amplifier with adjustable gate drive
EP3425795B1 (en) * 2017-07-03 2021-09-01 Infineon Technologies Austria AG Class d audio amplifier with overload protection circuit
US10044323B1 (en) * 2017-07-17 2018-08-07 Cirrus Logic, Inc. Reducing audio artifacts in an amplifier with configurable final output stage
GB2565293A (en) * 2017-08-07 2019-02-13 Reid Acoustic Designs Ltd An error amplifier
GB2603329B (en) * 2017-11-10 2023-04-26 Cirrus Logic Int Semiconductor Ltd Class-D amplifier with multiple independent output stages
JP7152642B2 (ja) * 2017-11-22 2022-10-13 テキサス インスツルメンツ インコーポレイテッド デューティサイクル制御を備えるｄ級アンプ
US11405007B2 (en) 2017-12-07 2022-08-02 Purifi Aps Amplifier circuit
EP3721553B1 (en) 2017-12-07 2023-09-06 Purifi ApS An amplifier with a compensator with a network of at least third order
EP3721555B1 (en) 2017-12-07 2023-09-06 Purifi ApS An amplifier with an at least second order filter in the control loop
US11223898B2 (en) * 2018-02-05 2022-01-11 Radio Sound, Inc. Audio system including speakers with integrated amplifier and method of detecting speakers
CA3210579A1 (en) * 2018-02-23 2019-08-29 Qsc, Llc Audio amplifier assemblies, processes, and methods
WO2019173470A1 (en) 2018-03-07 2019-09-12 Earlens Corporation Contact hearing device and retention structure materials
WO2019199680A1 (en) 2018-04-09 2019-10-17 Earlens Corporation Dynamic filter
US10587232B2 (en) * 2018-05-17 2020-03-10 Cirrus Logic, Inc. Class D amplifiers
EP3831095A4 (en) 2018-07-31 2022-06-08 Earlens Corporation NEAR-FIELD INDUCTIVE COUPLING IN A CONTACT HEARING SYSTEM
CN109217827B (zh) * 2018-08-31 2022-07-01 南京矽力微电子技术有限公司 D类功率放大器及其补偿方法和数字信号处理装置
US10804813B2 (en) * 2018-11-14 2020-10-13 Ford Global Technologies, Llc Power inverter for reducing total harmonic distortion via duty cycle control
US12456604B2 (en) 2019-12-24 2025-10-28 Eagle Harbor Technologies, Inc. Nanosecond pulser RF isolation for plasma systems
US10763799B2 (en) * 2018-12-12 2020-09-01 Infineon Technologies Austria Ag Flying capacitor voltage control in an amplifier
US11309839B2 (en) * 2019-05-06 2022-04-19 Mediatek Inc. High signal-to-noise ratio amplifier with multiple output modes
US11496096B2 (en) 2019-05-29 2022-11-08 Maxim Integrated Products, Inc. Amplifier switching control systems and methods
TWI719811B (zh) 2020-01-21 2021-02-21 瑞昱半導體股份有限公司 負回授系統架構及其迴圈濾波器
US11451200B2 (en) 2020-02-25 2022-09-20 Mediatek Inc. Low pop-click noise class-D amplifier
JP7439302B2 (ja) 2020-05-12 2024-02-27 イーグル ハーバー テクノロジーズ，インク． 高周波ｒｆ発生器及びｄｃパルシング
US11336182B2 (en) * 2020-07-19 2022-05-17 xMEMS Labs, Inc. Driving circuit with energy recycle capability
EP3989438B1 (en) * 2020-10-20 2023-08-16 Nxp B.V. Digital signal generator for audio artefact reduction
US11463052B2 (en) 2020-11-30 2022-10-04 Stmicroelectronics S.R.L. PWM driving circuit and method
US12700740B1 (en) 2021-05-13 2026-08-04 Ethernovia Inc. Circuits for providing power supply using floating capacitive supply
CN114430227B (zh) * 2022-02-07 2023-06-30 Oppo广东移动通信有限公司 一种纹波电压处理装置及方法和开关电源
WO2023205376A1 (en) * 2022-04-21 2023-10-26 Cirrus Logic International Semiconductor Ltd. Non-linear function in an early-sampled hybrid multi-level converter amplifier system
US12531526B2 (en) * 2022-04-21 2026-01-20 Cirrus Logic Inc. Non-linear function in an early-sampled hybrid multi-level converter amplifier system
US12633885B2 (en) * 2023-07-21 2026-05-19 Cirrus Logic Inc. Switching drivers with voltage monitoring
US20250253772A1 (en) * 2024-02-01 2025-08-07 Cirrus Logic International Semiconductor Ltd. Discontinuous conduction mode/pulse-frequency modulation entry and three-level to two-level transition in a multi-level converter
TWI892510B (zh) * 2024-03-13 2025-08-01 瑞昱半導體股份有限公司 音頻放大系統及其方法
US20250373244A1 (en) * 2024-06-03 2025-12-04 Cirrus Logic International Semiconductor Ltd. Switching drivers
US20250373214A1 (en) * 2024-06-03 2025-12-04 Cirrus Logic International Semiconductor Ltd. Switching drivers

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06303049A (ja) * 1993-04-14 1994-10-28 Mitsubishi Electric Corp Ｐｗｍ増幅器
US6819912B2 (en) 2001-11-05 2004-11-16 Freescale Semiconductor, Inc. Variable frequency switching amplifier and method therefor
US7110737B2 (en) 2002-05-14 2006-09-19 Sony Corporation Audio equipment and control method of audio equipment
JP2004072707A (ja) * 2002-06-13 2004-03-04 Sony Corp パワーアンプ装置
US7002406B2 (en) * 2003-05-16 2006-02-21 Texas Instruments Incorporated Loop filter for class D amplifiers
JP4137732B2 (ja) * 2003-07-29 2008-08-20 シャープ株式会社 ディジタルアンプの駆動方法及び音声信号再生装置
DE102006026906B4 (de) * 2006-06-09 2011-02-10 Infineon Technologies Ag Schaltung und Verfahren zur Pulsweitenmodulation mittels synchronisierter, selbstoszillierender Pulsweitenmodulatoren
JP2008066995A (ja) * 2006-09-06 2008-03-21 Fujitsu Ten Ltd 乗物搭載オーディオ機器用信号増幅装置
GB0710186D0 (en) * 2007-05-29 2007-07-04 Texas Instr Denmark PWM loop with minimum allasing error property
GB0717958D0 (en) * 2007-09-14 2007-10-24 Motorola Inc Power supply controller circuitry
JP5532192B2 (ja) * 2008-01-24 2014-06-25 独立行政法人産業技術総合研究所 電力変換装置
EP2221964B1 (en) * 2009-02-18 2015-06-24 Hypex Electronics B.V. Self oscillating class D amplification device
US8189802B2 (en) * 2009-03-19 2012-05-29 Qualcomm Incorporated Digital filtering in a Class D amplifier system to reduce noise fold over
US8212612B2 (en) * 2010-07-19 2012-07-03 Broadcom Corporation Closed-loop class-D amplifier with modulated reference signal and related method
EP2633621B1 (en) * 2010-10-27 2017-08-30 Merus Audio ApS Audio amplifier using multi-level pulse width modulation

Similar Documents

Publication Publication Date Title
JP6325526B2 (ja) 調整可能ループ・フィルター特性を有するクラスｄオーディオ・アンプ
JP7176859B2 (ja) 調整可能なゲート駆動のｄ級オーディオ増幅器
US10566939B2 (en) Circuit for generating a plurality of reference voltages for controlling feedback within the circuit
JP6023361B2 (ja) マルチレベルのパルス幅変調を使用するオーディオアンプ
TWI477064B (zh) A system and method for reducing distortion in an audio amplification system
CN105075085A (zh) 用于et调制器的改进的电压升压
JP7612685B2 (ja) ドライバ回路を制御するための方法、ドライバ回路、ドライバ回路を備えたシステム、および集積回路を製造するための方法
EP2127070B1 (en) A data processing system for clipping correction
EP2951920A1 (en) Improved efficiency for linear amplifier of envelope tracking modulator
US11476811B2 (en) Flying capacitor voltage control in an amplifier
GB2610917A (en) Chopped triangular wave PWM quantizer and PWM modulator having quantizer with controllable analog gain and calibratable for multi-non-ideal gain-affecting
US9263992B1 (en) Class D amplifier with variable switching frequency
WO2016091620A1 (en) Self-oscillating amplifier with high order loop filter
Bakker et al. Improving the efficiency of class-D audio amplifier systems using envelope tracking DC-DC power supplies
TWI831102B (zh) 音訊調變放大電路
RU2660809C1 (ru) Способ управления частотным преобразователем
Ginart Single ended switching analog audio amplifier with dead zone