KR20140089787A - 스위칭 레귤레이터 및 비교기를 이용한 스위칭 레귤레이터의 제로 커런트 감지 방법 - Google Patents
스위칭 레귤레이터 및 비교기를 이용한 스위칭 레귤레이터의 제로 커런트 감지 방법 Download PDFInfo
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- G—PHYSICS
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- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
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- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is DC
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
- G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
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- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
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- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
-
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1588—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 including plural semiconductor devices as final control devices for a single load comprising at least one synchronous rectifier element
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- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0032—Control circuits allowing low power mode operation, e.g. in standby mode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
Description
도 2는 도 1의 컨트롤 로직에 대한 상세 블록도이다.
도 3은 본 발명의 일 실시예에 따른 스위칭 레귤레이터의 동작을 설명하기 위한 타이밍도이다.
도 4는 본 발명의 다른 실시예에 따른 스위칭 레귤레이터의 동작을 설명하기 위한 타이밍도이다.
도 5는 본 발명의 또 다른 실시예에 따른 스위칭 레귤레이터의 동작을 설명하기 위한 순서도이다.
도 6은 본 발명의 또 다른 실시예에 따른 스위칭 레귤레이터의 동작을 설명하기 위한 타이밍도이다.
도 7 및 도 8은 본 발명의 실시예들에 따른 스위칭 레귤레이터가 적용된 반도체 시스템들을 도시한 개념 블록도들이다.
도 9는 도 8에 도시된 반도체 시스템의 일 예를 도시한 도면이다.
30: 스위치 컨트롤러 42, 44: 스위치
50: 인덕터 60: 전하 저장 소자
Claims (10)
- 스위칭 노드에 접속되어 상기 스위칭 노드를 통해 흐르는 인덕터 전류를 컨트롤하는 스위치; 및
상기 스위치가 턴 오프(turn off)된 후 상기 스위칭 노드의 전압 변화를 감지하여 상기 스위치의 턴 오프 시점을 컨트롤하는 스위치 컨트롤러를 포함하되,
상기 스위치 컨트롤러는,
상기 스위칭 노드에 접속된 제1 입력단에 인가되는 제1 전압과, 상기 스위치의 제1 단에 접속된 제2 입력단에 인가되는 제2 전압을 비교하여 비교 신호를 출력하는 비교기와,
상기 비교기의 비교 신호를 제공받고 상기 스위치의 턴 오프 시점을 조절하기 위해 상기 비교기의 오프셋을 컨트롤하는 컨트롤 로직을 포함하는 스위칭 레귤레이터. - 제 1항에 있어서,
상기 비교기의 오프셋은 디지털 오프셋 컨트롤 신호를 통해 컨트롤되는 스위칭 레귤레이터. - 제 2항에 있어서,
상기 컨트롤 로직은,
상기 디지털 오프셋 컨트롤 신호의 비트 수를 증가 또는 감소시키는 업-다운 카운터와,
상기 비교 신호를 바탕으로 상기 업-다운 카운터를 컨트롤하는 오프셋 컨트롤 로직과,
상기 비교기에 인에이블 신호를 인가하는 시점을 컨트롤하는 타이밍 컨트롤 로직을 포함하는 스위칭 레귤레이터. - 제 1항에 있어서,
상기 스위치의 제1 단과 제2 단 사이에는 기생 다이오드가 존재하고,
상기 스위치가 턴 오프된 후, 상기 기생 다이오드에 의해 상기 스위칭 노드의 전압이 강하될 경우, 상기 비교 신호의 신호 레벨이 변경되는 스위칭 레귤레이터. - 제 4항에 있어서,
상기 비교 신호의 신호 레벨이 변경되는 경우, 상기 컨트롤 로직은 상기 비교기의 오프셋을 감소시킴으로써 상기 스위치의 턴 오프 시점을 지연시키는 스위칭 레귤레이터. - 제 1항에 있어서,
상기 스위치가 턴 오프된 후, 상기 스위칭 노드의 전압이 강하되지 않아 상기 비교 신호의 신호 레벨이 변경되지 않을 경우, 상기 컨트롤 로직은 상기 비교기의 오프셋을 증가시킴으로써 상기 스위치의 턴 오프 시점을 앞당기는 스위칭 레귤레이터. - 제 1항에 있어서,
상기 컨트롤 로직은 제2 레벨의 제로 커런트 감지 신호가 발생된 후 일정 시간이 지나면 상기 비교기에 제공하는 인에이블 신호를 차단하고, 상기 비교기가 인에이블된 구간 내에서, 상기 비교기가 출력하는 상기 비교 신호를 감지함으로써, 상기 비교기의 오프셋을 컨트롤하는 스위칭 레귤레이터. - 1에서 n(n은 자연수) 사이의 값을 갖는 비교기의 오프셋을 m(m은 1≤m≤n인 자연수)으로 설정하고,
상기 m으로 설정된 비교기의 오프셋에 대해 증가가 요구될 경우, 상기 설정된 오프셋 m이 오프셋 m-1에서 증가되어 설졍되었으면 상기 오프셋을 m+1로 설정하고, 상기 설정된 오프셋 m이 오프셋 m+1에서 감소되어 설졍되었으면 P(P는 자연수)회 동안 상기 오프셋을 m으로 유지한 후 상기 오프셋을 m+1로 설정하는 것을 포함하는 비교기를 이용한 스위칭 레귤레이터의 제로 커런트 감지 방법. - 제 8항에 있어서,
상기 m으로 설정된 비교기의 오프셋에 대해 감소가 요구될 경우, 상기 설정된 오프셋 m이 오프셋 m+1에서 감소되어 설졍되었으면 상기 오프셋을 m-1로 설정하고, 상기 설정된 오프셋 m이 오프셋 m-1에서 증가되어 설졍되었으면 Q(Q는 자연수)회 동안 상기 오프셋을 m으로 유지한 후 상기 오프셋을 m-1로 설정하는 것을 더 포함하는 비교기를 이용한 스위칭 레귤레이터의 제로 커런트 감지 방법. - 제 9항에 있어서,
상기 P와 Q는 서로 다른 자연수인 비교기를 이용한 스위칭 레귤레이터의 제로 커런트 감지 방법.
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US14/146,775 US9543829B2 (en) | 2013-01-07 | 2014-01-03 | Switching regulator and comparator-based zero current detection method used by the switching regulator |
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KR20180093580A (ko) * | 2017-02-14 | 2018-08-22 | 연세대학교 산학협력단 | 오프셋 제어에 의한 제로 전류 감지 센서 및 그 방법 |
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