JP4015648B2 - D級増幅器 - Google Patents
D級増幅器 Download PDFInfo
- Publication number
- JP4015648B2 JP4015648B2 JP2004231068A JP2004231068A JP4015648B2 JP 4015648 B2 JP4015648 B2 JP 4015648B2 JP 2004231068 A JP2004231068 A JP 2004231068A JP 2004231068 A JP2004231068 A JP 2004231068A JP 4015648 B2 JP4015648 B2 JP 4015648B2
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- JP
- Japan
- Prior art keywords
- signal
- amplifier
- input signal
- class
- ramp
- 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.)
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/421—Multiple switches coupled in the output circuit of an amplifier are controlled by a circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/78—A comparator being used in a controlling circuit of an amplifier
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Description
111 信号発生器
114 エッジ検出器
116 位相検出器
118 出力段
Claims (18)
- 入力信号を受信するD級増幅器であって、
ランプ信号および反転ランプ信号を発生するランプ波発生器と、
前記ランプ信号が入力信号未満から入力信号の上へ遷移する時、および前記反転ランプ信号が入力信号未満から入力信号の上へ遷移する時に、第1信号を発生し、前記ランプ信号が入力信号の上から入力信号未満へ遷移する時、および前記反転ランプ信号が入力信号の上から入力信号未満へ遷移する時に、前記信号発生器が第2信号を発生する、信号発生器と
を備える、D級増幅器。 - 前記信号発生器がエッジ検出器を備える、請求項1に記載のD級増幅器。
- 前記信号発生器が位相検出器を更に備える、請求項2に記載のD級増幅器。
- 前記エッジ検出器が、
前記ランプ信号を入力信号と比較する第1比較器と、
前記反転ランプ信号を入力信号と比較する第2比較器と
を備える、請求項2に記載のD級増幅器。 - 前記エッジ検出器が、前記第1比較器および前記第2比較器の出力に立ち上がりエッジが生じた時に第1パルスを発生し、前記第1比較器および前記第2比較器の前記出力に立ち下がりエッジが生じた時に第2パルスを発生する、請求項4に記載のD級増幅器。
- 前記エッジ検出器が、
前記第1比較器の出力を受け取り、立ち上がりエッジが生じた時に前記第1パルスを発生する第1ワンショットと、
前記第1比較器の出力を受け取り、立ち下がりエッジが生じた時に前記第2パルスを発生する第2ワンショットと、
前記第2比較器の出力を受け取り、立ち上がりエッジが生じた時に前記第1パルスを発生する第3ワンショットと、
前記第2比較器の出力を受け取り、立ち下がりエッジが生じた時に前記第2パルスを発生する第4ワンショットと
を備える、請求項5に記載のD級増幅器。 - 前記ランプ信号の周波数が入力信号の周波数よりほぼ2桁高い、請求項1に記載のD級増幅器。
- 前記ランプ信号の正の勾配が前記ランプ信号の負の勾配とほぼ等しく、前記反転ランプ信号の正の勾配が前記反転ランプ信号の負の勾配とほぼ等しい、請求項1に記載のD級増幅器。
- 前記信号発生器から前記第1信号および前記第2信号を受け取り、前記第1信号および前記第2信号に基づいて出力電流を選択的に流す出力段を更に備える、請求項1に記載のD級増幅器。
- 前記出力段がシングルエンド駆動段を備える、請求項9に記載のD級増幅器。
- 前記出力段が平衡Hブリッジを備える、請求項9に記載のD級増幅器。
- 請求項9に記載のD級増幅器を備え、前記出力電流を受け取る負荷を更に備えるシステム。
- 前記負荷がオーディオスピーカーを備える、請求項12に記載のシステム。
- 前記D級増幅器が、前記出力段と前記負荷との間に配置された低域フィルターを更に備える、請求項12に記載のシステム。
- 入力信号を受け取るD級増幅器を操作する方法であって、
ランプ信号を発生するステップと、
反転ランプ信号を発生するステップと、
前記ランプ信号が入力信号未満から入力信号の上へ遷移する時に第1信号を発生するステップと、
前記反転ランプ信号が入力信号未満から入力信号の上へ遷移する時に前記第1信号を発生するステップと、
前記ランプ信号が入力信号の上から入力信号未満へ遷移する時に第2信号を発生するステップと、
前記反転ランプ信号が入力信号の上から入力信号未満へ遷移する時に前記第2信号を発生するステップと
を備える、方法。 - 前記第1信号および前記第2信号に基づいて出力電流を選択的に流すステップを更に備える、請求項15に記載の方法。
- 前記ランプ信号の周波数が入力信号の周波数よりほぼ2桁高く、前記ランプ信号の正の勾配が前記ランプ信号の負の勾配とほぼ等しい、請求項15に記載の方法。
- 前記出力電流を低域フィルタリングするステップを更に備える、請求項16に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/703,135 US7190224B2 (en) | 2003-11-06 | 2003-11-06 | Class D amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005143077A JP2005143077A (ja) | 2005-06-02 |
JP4015648B2 true JP4015648B2 (ja) | 2007-11-28 |
Family
ID=34435561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004231068A Active JP4015648B2 (ja) | 2003-11-06 | 2004-08-06 | D級増幅器 |
Country Status (6)
Country | Link |
---|---|
US (5) | US7190224B2 (ja) |
EP (1) | EP1530286B1 (ja) |
JP (1) | JP4015648B2 (ja) |
CN (1) | CN100508372C (ja) |
DE (1) | DE602004004230T2 (ja) |
TW (1) | TWI337805B (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
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US7190224B2 (en) * | 2003-11-06 | 2007-03-13 | Marvell World Trade Ltd. | Class D amplifier |
JP2006211523A (ja) * | 2005-01-31 | 2006-08-10 | Asahi Kasei Microsystems Kk | デジタルスイッチング回路 |
CA2897320A1 (en) | 2005-07-28 | 2007-01-28 | Nanocomp Technologies, Inc. | Systems and methods for formation and harvesting of nanofibrous materials |
US7279973B1 (en) * | 2005-09-23 | 2007-10-09 | Ami Semiconductor Belgium Bvba | H-bridge utilizing intermediate switching phase(s) |
JP4585970B2 (ja) * | 2006-01-05 | 2010-11-24 | Okiセミコンダクタ株式会社 | パルス幅変調装置 |
US8284963B2 (en) * | 2007-09-11 | 2012-10-09 | Texas Instruments Incorporated | Method and apparatus for diminishing mismatch effects between switched signals |
US7701307B2 (en) * | 2008-04-01 | 2010-04-20 | Silicon Laboratories, Inc. | System and method of changing a PWM power spectrum |
US7791521B2 (en) * | 2008-04-01 | 2010-09-07 | Silicon Laboratories, Inc. | System and method of changing a PWM power spectrum |
US7598895B1 (en) * | 2008-04-01 | 2009-10-06 | Silicon Laboratories, Inc. | System and method of altering a PWM carrier power spectrum |
GB2459304B (en) | 2008-04-18 | 2013-02-20 | Nujira Ltd | Improved pulse width modulation |
US8995691B2 (en) | 2008-07-14 | 2015-03-31 | Audera Acoustics Inc. | Audio amplifier |
US7746123B2 (en) * | 2008-09-09 | 2010-06-29 | Texas Instruments Incorporated | Switching system with reduced EMI |
US8269475B2 (en) * | 2009-02-17 | 2012-09-18 | Texas Instruments Incorporated | Class DH amplifier |
US8130128B2 (en) | 2010-03-30 | 2012-03-06 | Silicon Laboratores Inc. | System and method for generating shaped noise |
TWI429192B (zh) * | 2010-06-14 | 2014-03-01 | Upi Semiconductor Corp | 功率放大器及具有功率放大器的處理裝置 |
KR101401817B1 (ko) | 2011-02-28 | 2014-05-29 | 비덱스 에이/에스 | H-브리지 출력 스테이지를 갖는 보청기 및 출력 스테이지를 구동하는 방법 |
DE102011115503A1 (de) * | 2011-10-11 | 2013-04-11 | Astrium Gmbh | Messung des Ausgangstroms einer Verstärkerschaltung |
CN102545855B (zh) * | 2012-01-17 | 2017-04-05 | 南京航空航天大学 | 基于闭环控制的功率开关管驱动方法及系统 |
DE102015212232B4 (de) * | 2015-06-30 | 2020-03-05 | TRUMPF Hüttinger GmbH + Co. KG | Leistungscombiner zur Kopplung von Hochfrequenzsignalen und Leistungscombineranordnung mit einem solchen Leistungscombiner |
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-
2003
- 2003-11-06 US US10/703,135 patent/US7190224B2/en not_active Expired - Lifetime
-
2004
- 2004-05-14 DE DE602004004230T patent/DE602004004230T2/de not_active Expired - Lifetime
- 2004-05-14 EP EP04011557A patent/EP1530286B1/en not_active Expired - Lifetime
- 2004-06-24 TW TW093118269A patent/TWI337805B/zh not_active IP Right Cessation
- 2004-08-03 CN CNB2004100704773A patent/CN100508372C/zh active Active
- 2004-08-06 JP JP2004231068A patent/JP4015648B2/ja active Active
-
2005
- 2005-06-28 US US11/170,440 patent/US7242248B1/en not_active Expired - Lifetime
-
2007
- 2007-11-16 US US11/985,653 patent/US7468631B1/en not_active Expired - Lifetime
-
2008
- 2008-12-23 US US12/342,768 patent/US7646240B2/en not_active Expired - Fee Related
-
2010
- 2010-01-12 US US12/685,884 patent/US7884670B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US7242248B1 (en) | 2007-07-10 |
US20100111331A1 (en) | 2010-05-06 |
US7646240B2 (en) | 2010-01-12 |
CN100508372C (zh) | 2009-07-01 |
US7190224B2 (en) | 2007-03-13 |
TWI337805B (en) | 2011-02-21 |
EP1530286A1 (en) | 2005-05-11 |
CN1614882A (zh) | 2005-05-11 |
DE602004004230D1 (de) | 2007-02-22 |
EP1530286B1 (en) | 2007-01-10 |
TW200516842A (en) | 2005-05-16 |
US7884670B2 (en) | 2011-02-08 |
US20090102556A1 (en) | 2009-04-23 |
US20050099231A1 (en) | 2005-05-12 |
DE602004004230T2 (de) | 2007-11-15 |
JP2005143077A (ja) | 2005-06-02 |
US7468631B1 (en) | 2008-12-23 |
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