HK1115947A1 - Circuit and method for reducing electromagnetic interference - Google Patents
Circuit and method for reducing electromagnetic interferenceInfo
- Publication number
- HK1115947A1 HK1115947A1 HK08104878.1A HK08104878A HK1115947A1 HK 1115947 A1 HK1115947 A1 HK 1115947A1 HK 08104878 A HK08104878 A HK 08104878A HK 1115947 A1 HK1115947 A1 HK 1115947A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- delay
- pulse width
- width modulator
- electromagnetic interference
- voltage
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/50—Analogue/digital converters with intermediate conversion to time interval
- H03M1/502—Analogue/digital converters with intermediate conversion to time interval using tapped delay lines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/157—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/03—Astable circuits
- H03K3/0315—Ring oscillators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/84—Generating pulses having a predetermined statistical distribution of a parameter, e.g. random pulse generators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/60—Analogue/digital converters with intermediate conversion to frequency of pulses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2215/00—Reducing interference at the transmission system level
- H04B2215/064—Reduction of clock or synthesizer reference frequency harmonics
- H04B2215/067—Reduction of clock or synthesizer reference frequency harmonics by modulation dispersion
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc-Dc Converters (AREA)
- Manipulation Of Pulses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/424,499 US7342528B2 (en) | 2006-06-15 | 2006-06-15 | Circuit and method for reducing electromagnetic interference |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1115947A1 true HK1115947A1 (en) | 2008-12-12 |
Family
ID=38861002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK08104878.1A HK1115947A1 (en) | 2006-06-15 | 2008-05-02 | Circuit and method for reducing electromagnetic interference |
Country Status (5)
Country | Link |
---|---|
US (1) | US7342528B2 (zh) |
KR (1) | KR101390652B1 (zh) |
CN (1) | CN101093955B (zh) |
HK (1) | HK1115947A1 (zh) |
TW (1) | TWI399016B (zh) |
Families Citing this family (39)
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KR100856123B1 (ko) * | 2006-03-20 | 2008-09-03 | 삼성전자주식회사 | Emi 방출을 감소시킬 수 있는 데이터 처리장치와 그방법 |
US7652604B2 (en) * | 2007-02-28 | 2010-01-26 | Exar Corporation | Programmable analog-to-digital converter for low-power DC-DC SMPS |
US8130116B1 (en) * | 2007-08-27 | 2012-03-06 | Daigle Harold S | Mobile telephone tracking system |
US7679345B1 (en) * | 2007-10-09 | 2010-03-16 | Netlogic Microsystems, Inc. | Digital linear voltage regulator |
US8201012B2 (en) * | 2009-04-24 | 2012-06-12 | Evergreen Micro Devices Co., Ltd. | Load adaptive EMI reduction scheme for switching mode power supply |
US8289733B2 (en) * | 2009-10-13 | 2012-10-16 | Infineon Technologies Ag | Adaptive frequency jitter for controller |
DE102009046898A1 (de) | 2009-11-20 | 2011-05-26 | Robert Bosch Gmbh | FIFO-Speichervorrichtung und Verfahren zum Speichern und Auslesen von Daten unter Verwendung eines FIFO-Speichers |
US7965212B1 (en) * | 2010-02-12 | 2011-06-21 | Bae Systems Information And Electronic Systems Integration Inc. | DAC circuit using summing junction delay compensation |
KR101686435B1 (ko) * | 2010-07-12 | 2016-12-14 | 삼성전자주식회사 | 휴대용 단말기에서 전자파 간섭 발생을 방지하기 위한 장치 및 방법 |
US8575909B2 (en) * | 2010-09-17 | 2013-11-05 | Qualcomm Incorporated | Synchronously sampled single bit switch mode power supply |
EP2528230B1 (en) * | 2011-05-27 | 2014-03-19 | ST-Ericsson SA | Signal processing |
KR101291344B1 (ko) | 2011-10-28 | 2013-07-30 | 숭실대학교산학협력단 | 스위치 모드 전원 제어장치 |
US8907604B2 (en) * | 2012-02-07 | 2014-12-09 | Ford Global Technologies, Llc | PWM frequency pattern optimization for NVH |
US8736338B2 (en) * | 2012-04-11 | 2014-05-27 | Freescale Semiconductor, Inc. | High precision single edge capture and delay measurement circuit |
US9847705B2 (en) | 2012-08-06 | 2017-12-19 | Peter Oaklander | Regulator using smart partitioning |
FR2994515B1 (fr) * | 2012-08-08 | 2015-10-30 | Abb France | Procede de commande d’un contacteur electromagnetique et contacteur electromagnetique mettant en œuvre un tel procede. |
CN102820772A (zh) * | 2012-08-09 | 2012-12-12 | 江苏中江物联网科技有限公司 | 一种基于直接扩频技术的 pwm调制方法及系统 |
US9319341B2 (en) * | 2013-10-21 | 2016-04-19 | Stmicroelectronics International N.V. | Limitation of serial link interference |
CN103731024A (zh) * | 2013-12-24 | 2014-04-16 | 苏州易能微电子科技有限公司 | 基于开关周期改变的信号抖动系统及方法 |
US9520780B2 (en) * | 2014-02-17 | 2016-12-13 | Trw Automotive U.S. Llc | Switching mode power supply with spread spectrum oscillator |
US9531349B2 (en) * | 2015-01-22 | 2016-12-27 | Honeywell International Inc. | System and method for controlling radiated EMI using interleaved frequency switching |
US9793890B2 (en) * | 2015-05-07 | 2017-10-17 | Infineon Technologies Austria Ag | System and method for a switch transistor driver |
CN106932672B (zh) * | 2017-03-06 | 2019-06-07 | 吴伟 | 一种设备辐射干扰的评估方法 |
CN110582929B (zh) * | 2017-05-09 | 2021-03-12 | 三菱电机株式会社 | 电力变换装置 |
DE102017124575A1 (de) * | 2017-10-20 | 2019-04-25 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Trägermodulierte Pulsweitenmodulation zur Anpassung des Verzerrungsspektrums einer getakteten Leistungselektronik |
US10432088B1 (en) * | 2018-06-05 | 2019-10-01 | Dialog Semiconductor (Uk) Limited | Two-stage multi-phase switching power supply with cross-domain adaptive voltage and frequency regulation |
US11714127B2 (en) | 2018-06-12 | 2023-08-01 | International Business Machines Corporation | On-chip spread spectrum characterization |
CN108880204B (zh) * | 2018-09-03 | 2023-06-27 | 顺德职业技术学院 | 基于fpga的混沌频率调制数字开关电源控制电路 |
US10903743B2 (en) | 2019-01-14 | 2021-01-26 | Texas Instruments Incorporated | Methods and apparatus to adjust a transient response |
CN111900959B (zh) * | 2020-08-28 | 2021-06-15 | 无锡英迪芯微电子科技股份有限公司 | 一种基于线性反馈移位寄存器的时钟展频生成电路 |
TWI799742B (zh) * | 2020-10-12 | 2023-04-21 | 茂達電子股份有限公司 | 降低電磁干擾電路 |
DE102020216183A1 (de) | 2020-12-17 | 2022-06-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Stromrichter und Stromversorgungssystem |
US11689103B2 (en) * | 2021-03-25 | 2023-06-27 | Infineon Technologies Austria Ag | Power supply monitoring and switching frequency control |
US11693446B2 (en) * | 2021-10-20 | 2023-07-04 | International Business Machines Corporation | On-chip spread spectrum synchronization between spread spectrum sources |
CN114079375B (zh) * | 2021-10-28 | 2023-06-20 | 广州大学 | 分数阶混沌抑制辐射方法、系统、计算机设备及存储介质 |
US11870347B2 (en) * | 2022-01-28 | 2024-01-09 | Texas Instruments Incorporated | Spread spectrum modulation of rising and falling edge delays for current mode switching converters |
US20230251679A1 (en) * | 2022-02-10 | 2023-08-10 | Nxp B.V. | Linear voltage regulator |
JP2024034519A (ja) | 2022-08-31 | 2024-03-13 | 株式会社東芝 | 制御装置、スイッチングシステム及び制御方法 |
WO2024167530A1 (en) * | 2023-02-10 | 2024-08-15 | Google Llc | Switched power supply with reduced noise |
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US4818955A (en) * | 1987-08-31 | 1989-04-04 | Republic Electronics Company | System for generating signals subject to statistically random frequency perturbations |
US5318034A (en) * | 1991-11-27 | 1994-06-07 | Hitachi Medical Corp. | Electrically adjustable delay circuit and ultrasonic diagnosis apparatus |
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US5594631A (en) * | 1994-04-20 | 1997-01-14 | The Boeing Company | Digital pulse width modulator for power supply control |
GB2326036A (en) * | 1997-06-07 | 1998-12-09 | Motorola Ltd | A pulse-width-modulated clock generator producing reduced EMI |
US6014063A (en) * | 1997-08-27 | 2000-01-11 | Quiet Solutions, Inc. | Method and apparatus for reducing radiated electromagnetic emissions from harmonic frequencies for electronic equipment |
JP4015750B2 (ja) * | 1998-05-14 | 2007-11-28 | 株式会社東芝 | アクティブアレイアンテナシステム |
US6249876B1 (en) * | 1998-11-16 | 2001-06-19 | Power Integrations, Inc. | Frequency jittering control for varying the switching frequency of a power supply |
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DE60012299T2 (de) * | 2000-03-20 | 2005-06-30 | Motorola, Inc., Schaumburg | Einstellbarer Taktgenerator mit spektraler Dispersion und Verfahren hierfür |
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JP3883063B2 (ja) * | 2002-10-31 | 2007-02-21 | ローム株式会社 | クロック生成装置 |
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EP1672800B1 (en) * | 2002-12-24 | 2009-08-19 | Fujitsu Microelectronics Limited | Jitter generation circuit |
US6960961B2 (en) * | 2003-04-30 | 2005-11-01 | Agilent Technologies, Inc. | EMI reduction of oscillating signals by way of controlled randomized modulation |
US6833693B2 (en) * | 2003-04-30 | 2004-12-21 | Agilent Technologies, Inc. | EMI reduction of power converters by way of controlled randomized modulation of oscillating signals |
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US6822595B1 (en) * | 2003-06-18 | 2004-11-23 | Northrop Grumman Corporation | Extended range digital-to-analog conversion |
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JP4655500B2 (ja) * | 2004-04-12 | 2011-03-23 | ソニー株式会社 | Ad変換装置並びに物理量分布検知の半導体装置および電子機器 |
US7130346B2 (en) * | 2004-05-14 | 2006-10-31 | Freescale Semiconductor, Inc. | Method and apparatus having a digital PWM signal generator with integral noise shaping |
US7424046B2 (en) * | 2004-10-15 | 2008-09-09 | Altera Corporation | Spread spectrum clock signal generation system and method |
JP4350655B2 (ja) * | 2005-01-27 | 2009-10-21 | 川崎マイクロエレクトロニクス株式会社 | スペクトラム拡散クロックジェネレータ |
-
2006
- 2006-06-15 US US11/424,499 patent/US7342528B2/en active Active
-
2007
- 2007-05-03 TW TW096115721A patent/TWI399016B/zh active
- 2007-05-30 CN CN2007101081699A patent/CN101093955B/zh not_active Expired - Fee Related
- 2007-06-15 KR KR1020070058757A patent/KR101390652B1/ko active IP Right Grant
-
2008
- 2008-05-02 HK HK08104878.1A patent/HK1115947A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TW200812199A (en) | 2008-03-01 |
CN101093955A (zh) | 2007-12-26 |
CN101093955B (zh) | 2013-03-06 |
TWI399016B (zh) | 2013-06-11 |
US20070290894A1 (en) | 2007-12-20 |
US7342528B2 (en) | 2008-03-11 |
KR101390652B1 (ko) | 2014-05-02 |
KR20070119569A (ko) | 2007-12-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20210528 |