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1. 发明授权

EP1447908B1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：EP1447908B1
公开(公告)日：2011-03-16
申请号：EP02775506.5
申请日：2002-11-07
申请人： Sony Corporation
发明人： MASUDA, Toshihiko c/o SONY CORPORATION , OHKURI, Kazunobu c/o SONY CORPORATION
IPC分类号： H03F3/217
CPC分类号： H03F1/26 , H03F3/217 , H03F3/2173 , H03F3/3027 , H03F2200/331
摘要： A power amplifier for reducing radiation arising from the edge of an output voltage. The amplifier is provided with a pair of PWM modulation circuits (11, 12) to be supplied with an input signal, a pair of push-pull circuits (15, 16),and drive circuits (13, 14) which supply the output of the PWM modulation circuits (11, 12) as a drive signal to the push-pull circuits (15, 16). A loudspeaker (19) is connected between the output end of the push-pull circuit (15) and the output end of the push-pull circuit (16). The drive circuits (13, 14) are switched every cycle of a pulse modulation signal so that the drive signal to be supplied to the push-pull circuits (15, 16) may not change to a break point of every cycle of the pulse modulation signal.
摘要翻译：一种功率放大器，用于减少由输出电压边缘引起的辐射。该放大器具备供给输入信号的一对PWM调制电路（11,12），一对推挽电路（15,16）和驱动电路（13,14），该一对推挽电路 PWM调制电路（11,12）作为推挽电路（15,16）的驱动信号。扬声器（19）连接在推挽电路（15）的输出端和推挽电路（16）的输出端之间。驱动电路（13,14）在脉冲调制信号的每个周期被切换，使得要提供给推挽电路（15,16）的驱动信号可以不改变为脉冲调制的每个周期的中断点信号。

2. 发明公开

EP1447908A4 POWER AMPLIFIER 有权
标题翻译：功率转换器
公开(公告)号：EP1447908A4
公开(公告)日：2006-02-01
申请号：EP02775506
申请日：2002-11-07
申请人： SONY CORP
发明人： MASUDA TOSHIHIKO , OHKURI KAZUNOBU
IPC分类号： H03K17/16 , H03F1/26 , H03F3/217 , H03F3/30 , H03K17/695
CPC分类号： H03F1/26 , H03F3/217 , H03F3/2173 , H03F3/3027 , H03F2200/331
摘要： A power amplifier for reducing radiation arising from the edge of an output voltage. The amplifier is provided with a pair of PWM modulation circuits (11, 12) to be supplied with an input signal, a pair of push-pull circuits (15, 16),and drive circuits (13, 14) which supply the output of the PWM modulation circuits (11, 12) as a drive signal to the push-pull circuits (15, 16). A loudspeaker (19) is connected between the output end of the push-pull circuit (15) and the output end of the push-pull circuit (16). The drive circuits (13, 14) are switched every cycle of a pulse modulation signal so that the drive signal to be supplied to the push-pull circuits (15, 16) may not change to a break point of every cycle of the pulse modulation signal.

3. 发明公开

EP1447908A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：EP1447908A1
公开(公告)日：2004-08-18
申请号：EP02775506.5
申请日：2002-11-07
申请人： Sony Corporation
发明人： MASUDA, Toshihiko c/o SONY CORPORATION , OHKURI, Kazunobu c/o SONY CORPORATION
IPC分类号： H03F3/217
CPC分类号： H03F1/26 , H03F3/217 , H03F3/2173 , H03F3/3027 , H03F2200/331
摘要： A power amplifier for reducing emission generated at the edges of output voltages. A pair of PWM modulation circuits (11) and (12) to which an input signal is sent; a pair of push-pull circuits (15) and (16); and drive circuits (13) and (14) for sending the outputs of the PWM modulation circuits (11) and (12) as drive signals to the push-pull circuits (15) and (16) are provided. A speaker (19) is connected between the output end of the push-pull circuit (15) and the output end of the push-pull circuit (16). The drive circuits (13) and (14) are switched at intervals equal to the cycle period of pulse modulation signals such that the drive signals sent to the push-pull circuits (15) and (16) are not changed at the end points of each cycle period of the pulse modulation signals.
摘要翻译：功率放大器，用于减少输出电压边缘产生的辐射。输入信号被发送到的一对PWM调制电路（11）和（12）一对推挽电路（15）和（16）; 和用于将PWM调制电路（11）和（12）的输出作为驱动信号发送到推挽电路（15）和（16）的驱动电路（13）和（14）。扬声器（19）连接在推挽电路（15）的输出端和推挽电路（16）的输出端之间。以等于脉冲调制信号的周期的间隔切换驱动电路（13）和（14），使得发送到推挽电路（15）和（16）的驱动信号在每个周期的脉冲调制信号。

4. 发明授权

EP2489122B1 AMPLIFIER BIAS TECHNIQUES 有权
标题翻译：闭路设置一个放大器
公开(公告)号：EP2489122B1
公开(公告)日：2014-06-18
申请号：EP10771289.5
申请日：2010-10-15
申请人： Qualcomm Incorporated
发明人： DHANASEKARAN, Vijayakumar
IPC分类号： H03F1/30 , H03F3/30
CPC分类号： H03F1/308 , H03F3/3027 , H03F2200/447

5. 发明公开

EP2154783A1 Amplifying circuit 有权
标题翻译： Verstärkerschaltung
公开(公告)号：EP2154783A1
公开(公告)日：2010-02-17
申请号：EP08305481.7
申请日：2008-08-14
申请人： STMicroelectronics (Grenoble) SAS
发明人： Pontarollo, Serge , Ramet, Serge
IPC分类号： H03F3/30 , H03F1/32 , H03F1/30 , H03F1/02 , H03F1/34
CPC分类号： H03F3/3027 , H03F1/0261 , H03F1/308 , H03F1/3205 , H03F1/3217 , H03F1/342 , H03F2200/135 , H03F2200/453 , H03F2200/456 , H03F2200/513
摘要： The invention concerns an amplifier having an output stage with a complementary pair of first and second transistors (106, 108) each coupled to an output node (104) of the amplifier; control circuitry (110, 114, 116, 118) arranged to provide a control signal at a control node of the first transistor based on the voltage at an input node (102) of the amplifier; and adjustment circuitry (210) arranged to adjust the control signal to maintain the current through the first transistor above a minimum value (I MIN ).
摘要翻译：本发明涉及具有输出级的放大器，该输出级具有互补的第一和第二晶体管对（106,108），每个耦合到放大器的输出节点（104）; 控制电路（110,114,116,118），被布置为基于放大器的输入节点（102）处的电压在第一晶体管的控制节点处提供控制信号; 以及调整电路（210），其布置成调整所述控制信号以将通过所述第一晶体管的电流保持在最小值（I MIN）以上。

6. 发明公开

EP2784935A3 Amplifier bias techniques 审中-公开
标题翻译：对于放大器的偏置方法
公开(公告)号：EP2784935A3
公开(公告)日：2014-10-29
申请号：EP14172616.6
申请日：2010-10-15
申请人： Qualcomm Incorporated
发明人： Dhanasekarani, Vijayakumar
IPC分类号： H03F1/30 , H03F3/30
CPC分类号： H03F1/308 , H03F3/3027 , H03F2200/447
摘要： Techniques for generating a bias voltage for a class AB amplifier having first and second active transistors. In an exemplary embodiment, a diode-coupled first transistor supports a first current, and the gate voltage of the first transistor is coupled to the gate voltage of the first active transistor. The first current is split into a second current and a first auxiliary current supported by a second transistor, which is biased at a desired common-mode output voltage of the class AB amplifier. The first auxiliary current is further combined with a third current to be supported by a third transistor, with the third transistor configured to replicate the characteristic of the second active transistor. Further techniques are provided for setting the drain voltage of the third transistor to be close to the common-mode output voltage. The techniques described herein may be used to provide a bias voltage for the NMOS and/or PMOS active transistors in a class AB amplifier.

7. 发明授权

EP2154783B1 Amplifying circuit 有权
公开(公告)号：EP2154783B1
公开(公告)日：2012-10-03
申请号：EP08305481.7
申请日：2008-08-14
申请人： STMicroelectronics (Grenoble) SAS
发明人： Pontarollo, Serge , Ramet, Serge
IPC分类号： H03F1/32 , H03F3/30 , H03F1/30 , H03F1/02 , H03F1/34
CPC分类号： H03F3/3027 , H03F1/0261 , H03F1/308 , H03F1/3205 , H03F1/3217 , H03F1/342 , H03F2200/135 , H03F2200/453 , H03F2200/456 , H03F2200/513

8. 发明公开

EP1599935A1 LOW VOLTAGE CLASS AB TRANSCONDUCTOR CIRCUITS 审中-公开
标题翻译：低压AB类跨
公开(公告)号：EP1599935A1
公开(公告)日：2005-11-30
申请号：EP04706756.6
申请日：2004-01-30
申请人： Koninklijke Philips Electronics N.V.
发明人： HUGHES, John B.
IPC分类号： H03F3/30 , H03F1/30 , H03F3/45
CPC分类号： H03F3/3027
摘要： A class AB transconductor circuit comprises complementary PMOS and NMOS transistors (10, 12) having their source-drain paths connected in series between first and second voltage supply rails (14, 16). An output terminal (20) is coupled to a junction of said series connected source-drain paths. Gate electrodes of the PMOS and NMOS transistors are coupled to an input terminal (18) by way of respective first and second paths each of which includes first and second bias voltage supply sources (32, 34). The quiescent gate voltages of the PMOS and NMOS are offset from the quiescent input voltage by the equal and opposite voltages (Vb) of the first and second bias voltage supply sources thereby reducing the apparent threshold voltage (Vt') of the PMOS and NMOS transistors by the value of the bias voltage supply sources. Balanced class AB transconductor circuits are also disclosed.

9. 发明公开

EP3107210A1 AMPLIFIER CIRCUIT WITH STATIC CONSUMPTION CONTROL AND CORRESPONDING CONTROL METHOD 有权
标题翻译： VERSTÄRKERSCHALTUNG麻省理工学院VERBRAUCHSSTEUERUNG UND ENTSPRECHENDES STEUERUNGSVERFAHREN
公开(公告)号：EP3107210A1
公开(公告)日：2016-12-21
申请号：EP15200607.8
申请日：2015-12-16
申请人： STMicroelectronics S.r.l.
发明人： CONTE, Antonino , DI MARTINO, Alberto Jose'
IPC分类号： H03F3/45 , H03F3/30
CPC分类号： H03F3/45179 , G11C5/145 , G11C16/12 , H03F3/3027 , H03F3/45659 , H03F3/45748 , H03F3/45973 , H03F2203/45116 , H03F2203/45424 , H03F2203/45431 , H03M1/66
摘要： An amplifier circuit (20) is provided with: an input amplification stage (4) having a first operational amplifier (10) and a second operational amplifier (11) with differential inputs (4a, 4b), which are connected in parallel and in phase opposition and receive an input voltage (V L ) and a feedback voltage (V R ); an output amplification stage (6) with a first input (6a) and a second input (6b) that are connected to the outputs (4c, 4d) of the input amplification stage (4) for supplying an output voltage (V out ) linked to the input voltage (V L ) by an amplification factor (β); and a feedback stage (8) that generates the feedback voltage (V R ) as a function of the output voltage (V out ). A common-mode control stage (22) is connected to the outputs of the input amplification stage (4), from which it receives a first differential voltage (V 1 ) and a second differential voltage (V 2 ), implements a comparison between these voltages and a reference voltage (V CMref ), and forces a regulation current (I 1 , I 2 ) on the inputs of the output amplification stage, the value of which is a function of the outcome of the comparison, for compensating a common-mode variation of the aforesaid differential voltages.
摘要翻译：放大器电路（20）具有：具有差分输入（4a，4b）的具有第一运算放大器（10）和第二运算放大器（11）的输入放大级（4），它们并联并且相位接收输入电压（VL）和反馈电压（VR）; 具有连接到输入放大级（4）的输出（4c，4d）的第一输入（6a）和第二输入（6b）的输出放大级（6），用于提供连接的输出电压（V out）通过放大因子（²）与输入电压（VL）相关; 以及产生作为输出电压（V out）的函数的反馈电压（V R）的反馈级（8）。共模控制级（22）连接到输入放大级（4）的输出端，它接收第一差分电压（V 1）和第二差分电压（V 2），实现这些之间的比较电压和参考电压（V CMref），并且在输出放大级的输入上强制调节电流（I 1，I 2），其值是比较结果的函数，用于补偿公共 - 上述差分电压的模式变化。

10. 发明公开

EP2961064A1 Robust sink/source output stage and control circuit 有权
标题翻译： Robuste Senk- / Quellenausgangsstufe und Steuerungsschaltung
公开(公告)号：EP2961064A1
公开(公告)日：2015-12-30
申请号：EP14174395.5
申请日：2014-06-26
申请人： Dialog Semiconductor (UK) Limited
发明人： Kronmueller, Frank , Bhattad, Ambreesh
IPC分类号： H03F3/30 , G05F1/56 , G05F1/46 , G05F1/571 , G05F1/59
CPC分类号： G05F1/563 , G05F1/468 , G05F1/56 , G05F1/562 , G05F1/571 , H03F3/3027 , H03F3/45273 , H03F3/68 , H03F2200/129 , H03F2200/153 , H03F2200/474 , H03F2200/78 , H03F2203/45116
摘要： The present document relates to multi-stage amplifiers, such as linear regulators or linear voltage regulators (e.g. low-dropout regulators), configured to provide a constant output voltage subject to load transients. A multi-stage amplifier (200) is described. The multi-stage amplifier (200) comprises a first amplification stage (260, 261) configured to activate or to deactivate a first output stage (270, 271, 201) in response to an input voltage at an input node (255). The first output stage (270, 271, 201) is configured to source a current at an output node (301) of the multi-stage amplifier (200) from a high potential (302), when activated. Furthermore, the multi-stage amplifier (200) comprises a second amplification stage (400, 401) configured to activate or to deactivate a second output stage (410, 411, 412) in response to the input voltage at the input node (255). The second output stage (410, 411, 412) is configured to sink a current at the output node (301) of the multi-stage amplifier (200) to a low potential (303), when activated. The first amplification stage (260, 261) and the second amplification stage (400, 401) are configured to activate the first output stage (270, 271, 201) and the second output stage (410, 411, 412) in a mutually exclusive manner.
摘要翻译：本文件涉及多级放大器，例如线性稳压器或线性稳压器（例如低压差稳压器），其被配置为提供经受负载瞬变的恒定输出电压。描述了多级放大器（200）。多级放大器（200）包括被配置为响应于输入节点（255）处的输入电压来激活或去激活第一输出级（270,271,201）的第一放大级（260,261）。第一输出级（270,271,201）被配置为当激活时将多级放大器（200）的输出节点（301）处的电流从高电位（302）引出。此外，多级放大器（200）包括被配置为响应于输入节点（255）处的输入电压激活或去激活第二输出级（410,411,412）的第二放大级（400,401）。第二输出级（410,411,412）被配置为当激活时将多级放大器（200）的输出节点（301）处的电流吸收到低电位（303）。第一放大级（260,261）和第二放大级（400,401）被配置为以相互排斥的方式激活第一输出级（270,271,201）和第二输出级（410,411,412）方式。

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