KR100516014B1 - Pwm 입력신호들의 위상들이 다른 다중채널 디지털앰프 - Google Patents
Pwm 입력신호들의 위상들이 다른 다중채널 디지털앰프 Download PDFInfo
- Publication number
- KR100516014B1 KR100516014B1 KR10-2001-0031544A KR20010031544A KR100516014B1 KR 100516014 B1 KR100516014 B1 KR 100516014B1 KR 20010031544 A KR20010031544 A KR 20010031544A KR 100516014 B1 KR100516014 B1 KR 100516014B1
- Authority
- KR
- South Korea
- Prior art keywords
- pwm
- digital amplifier
- signals
- channel
- signal
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000003321 amplification Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 230000005669 field effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012942 design verification Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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
- H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (3)
- 삭제
- N개(N은 2이상)의 PCM 입력신호를 소출력 PWM 신호로 바꾸는 PWM컨버터부와, N개의 소출력 PWM신호를 증폭하여 N개의 대출력 PWM신호로 증폭하는 스위칭회로부와, 상기 N개의 대출력 PWM신호를 다수의 스피커로 입력되는 아날로그 신호로 복원하는 저역통과필터를 갖는 다중채널 디지털앰프에 있어서,상기 PWM컨버터부가 상기 N개의 PCM 입력신호를 상기 N개의 소출력 PWM신호로 바꿀 때, 상기 N개의 소출력 PWM신호의 위상을 서로 다르게 하며,상기 스위칭회로부에 입력되는 상기 N개의 소출력 PWM신호의 위상이 서로 달라 상기 스위칭회로부의 반도체 스위칭소자의 온/오프 시간이 달라지는 것을 특징으로 하는, PWM 입력신호들의 위상들이 다른 다중채널 디지털앰프.
- 제2항에 있어서,상기 N개의 소출력 PWM신호들의 위상이 Π/N만큼 순차적으로 이동되는 것을 특징으로 하는, PWM 입력신호들의 위상들이 다른 다중채널 디지털앰프.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2001-0031544A KR100516014B1 (ko) | 2001-06-05 | 2001-06-05 | Pwm 입력신호들의 위상들이 다른 다중채널 디지털앰프 |
US10/161,327 US6731162B2 (en) | 2001-06-05 | 2002-06-03 | Multi-channel digital amplifier for shifting phases of PWM signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2001-0031544A KR100516014B1 (ko) | 2001-06-05 | 2001-06-05 | Pwm 입력신호들의 위상들이 다른 다중채널 디지털앰프 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020092750A KR20020092750A (ko) | 2002-12-12 |
KR100516014B1 true KR100516014B1 (ko) | 2005-09-26 |
Family
ID=19710433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2001-0031544A KR100516014B1 (ko) | 2001-06-05 | 2001-06-05 | Pwm 입력신호들의 위상들이 다른 다중채널 디지털앰프 |
Country Status (2)
Country | Link |
---|---|
US (1) | US6731162B2 (ko) |
KR (1) | KR100516014B1 (ko) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100538361B1 (ko) * | 2002-08-10 | 2005-12-21 | 엘지전자 주식회사 | 멀티 채널 펄스 폭 변조기에서의 노이즈 제거장치 |
US6853325B2 (en) * | 2002-12-27 | 2005-02-08 | Renesas Technology Corp. | Pulse width modulation digital amplifier |
US7061312B2 (en) * | 2003-03-21 | 2006-06-13 | D2Audio Corporation | Systems and methods for providing multi channel pulse width modulated audio with staggered outputs |
US7584009B2 (en) * | 2003-03-21 | 2009-09-01 | D2Audio Corporation | Multi-chip PWM synchronization and communication |
US7929718B1 (en) | 2003-05-12 | 2011-04-19 | D2Audio Corporation | Systems and methods for switching and mixing signals in a multi-channel amplifier |
DE10337782B4 (de) * | 2003-07-14 | 2007-03-01 | Micronas Gmbh | Methode und Schaltung zur effektiven Konvertierung von PCM-in PWM-Daten |
US7157964B2 (en) * | 2003-08-11 | 2007-01-02 | Jam Technologies, Inc. | Multi-output switching amplifier |
JP2005142780A (ja) * | 2003-11-06 | 2005-06-02 | Sony Corp | 電力増幅回路 |
KR100739786B1 (ko) * | 2006-01-20 | 2007-07-13 | 삼성전자주식회사 | 다중 채널 디지털 앰프 시스템 및 그 신호 처리 방법 |
US7889875B2 (en) * | 2006-11-09 | 2011-02-15 | National Chiao Tung University | Class-D driving method for stereo load |
US8284963B2 (en) * | 2007-09-11 | 2012-10-09 | Texas Instruments Incorporated | Method and apparatus for diminishing mismatch effects between switched signals |
TWI392214B (zh) * | 2009-06-04 | 2013-04-01 | Univ Nat Chiao Tung | The driving device and driving method of multi - phase straight / AC converter |
US8618875B2 (en) | 2011-12-20 | 2013-12-31 | Blackberry Limited | Using a new synchronization scheme for a multi-channel class-D amplifier |
CN113484367A (zh) * | 2021-07-07 | 2021-10-08 | 上海电气数智生态科技有限公司 | 一种提高多通道水质传感器测量精度的电路和方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5218315A (en) | 1992-01-06 | 1993-06-08 | Infinity Systems, Inc. | Switching amplifier |
KR100283154B1 (ko) | 1999-01-21 | 2001-02-15 | 구자홍 | 냉장고의 스트로크 추정회로 |
JP2002171140A (ja) * | 2000-12-01 | 2002-06-14 | Mitsubishi Electric Corp | オーディオ信号増幅出力回路 |
-
2001
- 2001-06-05 KR KR10-2001-0031544A patent/KR100516014B1/ko active IP Right Grant
-
2002
- 2002-06-03 US US10/161,327 patent/US6731162B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20020092750A (ko) | 2002-12-12 |
US6731162B2 (en) | 2004-05-04 |
US20030006838A1 (en) | 2003-01-09 |
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