TWI456382B - 電源供應器、用於電源供應器的電源管理裝置及用於電源管理裝置之低電壓保護以及過溫度保護之方法 - Google Patents
電源供應器、用於電源供應器的電源管理裝置及用於電源管理裝置之低電壓保護以及過溫度保護之方法 Download PDFInfo
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- TWI456382B TWI456382B TW100135732A TW100135732A TWI456382B TW I456382 B TWI456382 B TW I456382B TW 100135732 A TW100135732 A TW 100135732A TW 100135732 A TW100135732 A TW 100135732A TW I456382 B TWI456382 B TW I456382B
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Classifications
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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
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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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
-
- 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
- H02M1/327—Means for protecting converters other than automatic disconnection against abnormal temperatures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Protection Of Static Devices (AREA)
Claims (10)
- 一種電源供應器,包含:一整流器,用以接收一交流電壓,其中該交流電壓具有一電壓周期;一變壓器,耦接至該整流器,用以提供一輸出電壓,其中該變壓器具有耦接至一開關的電感元件;及一電源管理裝置,用以控制該開關使該電感元件進行儲能或釋能,其中該電源管理裝置具有耦接至該整流器與一熱敏電阻的多功能端(multi-function pin),其中該多功能端是用以於該電壓周期的正半波週期時接收對應於該正半波週期之一電流,以及該多功能端另用以於該電壓周期的負半波週期時流出一參考電流與接收一過溫度保護信號,其中該熱敏電阻與該參考電流是用以形成該過溫度保護信號,其中該電源管理裝置包含:一低電壓偵測電路,其中該低電壓偵測電路於該正半波週期時耦接於該多功能端以接收對應於該電流的一偵測電壓,比較該偵測電壓與一第一參考電壓,並據以輸出一第一比較信號,其中該電源管理裝置依據該第一比較信號執行一低電壓保護功能,以及於該正半波週期時,該電流大於零;及一過溫度偵測電路,用以於該負半波周期時,比較該過溫度保護信號與一第二參考電壓,並據以輸出一第二比較信號, 其中該電源管理裝置依據該第二比較信號執行一過溫度保護功能。
- 如請求項1所述之電源供應器,其中該多功能端係透過一二極體耦接至該整流器。
- 如請求項1所述之電源供應器,其中該多功能端係透過一二極體耦接至該熱敏電阻。
- 如請求項1所述之電源供應器,其中該電源管理裝置另包含:一切換電路,耦接至該多功能端,用以偵測該電流,以偵測該電壓週期。
- 一種電源供應器,包含:一整流器,用以接收一交流電壓,其中該交流電壓具有一電壓周期;一變壓器,耦接至該整流器,用以提供一輸出電壓,其中該變壓器具有耦接至一開關的電感元件;及一電源管理裝置,用以控制該開關使該電感元件進行儲能或釋能,其中該電源管理裝置具有耦接至該整流器與一熱敏電阻的多功能端,其中該多功能端是用以於該電壓周期的正半波週期時接收對應於該正半波週期之一電流,以及該多功能端另用以於該電壓周期的負半波週期時流出一參考電流與接 收一過溫度保護信號,其中該熱敏電阻與該參考電流是用以形成該過溫度保護信號,其中該電源管理裝置包含:一低電壓偵測電路,用以接收對應於該電流的一偵測電壓,以及比較該偵測電壓與一第一參考電壓,並據以輸出一第一比較信號,其中該電源管理裝置依據該第一比較信號執行一低電壓保護功能;及一過溫度偵測電路,其中該過溫度偵測電路於該負半波週期時耦接於該多功能端以接收該過溫度保護信號,比較該過溫度保護信號與一第二參考電壓,以及據以輸出一第二比較信號,其中該電源管理裝置依據該第二比較信號執行一過溫度保護功能,以及於該負半波週期時,該電流不大於零。
- 一種用於一電源供應器的電源管理裝置,包含:一低電壓偵測電路,其中該低電壓偵測電路於該電源供應器所接收的一交流電壓的電壓周期為一正半波周期時耦接於該電源管理裝置的多功能端,以及比較對應於該正半波周期時流入該多功能端的一電流的一偵測電壓與一第一參考電壓後輸出一第一比較信號,其中該電源管理裝置依據該第一比較信號執行一低電壓保護功能,以及於該正半波週期時,該電流大於零;及一過溫度偵測電路,用以於該電壓周期為一負半波周期時,比較一過溫度保護信號與一第二參考電壓後輸出一第二比較 信號,其中該電源管理裝置依據該第二比較信號執行一過溫度保護功能。
- 如請求項6所述之電源供應器,其中該電源管理裝置還包含:一切換電路,耦接至該多功能端,用以偵測該電流,以偵測該電壓周期。
- 一種用於一電源供應器的電源管理裝置,包含:一低電壓偵測電路,用以於該電源供應器所接收的一交流電壓的電壓周期為一正半波周期時比較對應於該正半波周期時流入該多功能端的一電流的一偵測電壓與一第一參考電壓後輸出一第一比較信號,其中該電源管理裝置依據該第一比較信號執行一低電壓保護功能;及一過溫度偵測電路,其中該過溫度偵測電路於該電壓周期為一負半波周期時耦接於該電源管理裝置的多功能端,以及比較對應於該負半波周期時流出該多功能端的一參考電流的一過溫度保護信號與一第二參考電壓後輸出一第二比較信號,其中該電源管理裝置依據該第二比較信號執行一過溫度保護功能,以及於該負半波週期時,該電流不大於零。
- 一種用於一電源管理裝置之低電壓保護以及過溫度保護之方法,該電源管理裝置包括有一多功能端同時耦接至一交流電壓與一熱敏電阻,一低電壓偵測電路,以及一過溫度偵測電路, 該方法包含:偵測該交流電壓之一電壓周期;於該電壓周期為一正半波周期時,使該低電壓偵測電路耦接於該多功能端,以及比較對應於該正半波週期時流入該多功能端的一電流之一偵測電壓與一第一參考電壓,而使該電源管理裝置根據一第一比較信號,執行一低電壓保護功能;以及於該電壓周期為一負半波周期時,使該過溫度偵測電路耦接於該多功能端,以及比較對應於該熱敏電阻和一參考電流之一過溫度保護信號與一第二參考電壓,而使該電源管理裝置根據一第二比較信號,執行一過溫度保護功能。
- 如請求項9所述之方法,其中於該正半波周期時,該電流大於零,於該負半波周期時,該電流不大於零。
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TW100135732A TWI456382B (zh) | 2011-10-03 | 2011-10-03 | 電源供應器、用於電源供應器的電源管理裝置及用於電源管理裝置之低電壓保護以及過溫度保護之方法 |
US13/632,147 US9036385B2 (en) | 2011-10-03 | 2012-09-30 | Power supply, power management device applied to a power supply, and method for performing brown-out protection and overheat protection of a power management device |
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TW100135732A TWI456382B (zh) | 2011-10-03 | 2011-10-03 | 電源供應器、用於電源供應器的電源管理裝置及用於電源管理裝置之低電壓保護以及過溫度保護之方法 |
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TW201316159A (zh) | 2013-04-16 |
US9036385B2 (en) | 2015-05-19 |
US20130083562A1 (en) | 2013-04-04 |
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