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TWI299606B - - Google Patents

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Publication number
TWI299606B
TWI299606B TW092126596A TW92126596A TWI299606B TW I299606 B TWI299606 B TW I299606B TW 092126596 A TW092126596 A TW 092126596A TW 92126596 A TW92126596 A TW 92126596A TW I299606 B TWI299606 B TW I299606B
Authority
TW
Taiwan
Prior art keywords
voltage
output
circuit
mentioned
converter
Prior art date
Application number
TW092126596A
Other languages
English (en)
Other versions
TW200513013A (en
Inventor
Steve Weng
Kai-Fu Chen
Sheng Chung Huang
zhi-rong Lin
Original Assignee
Asustek Comp Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asustek Comp Inc filed Critical Asustek Comp Inc
Priority to TW092126596A priority Critical patent/TW200513013A/zh
Priority to US10/910,339 priority patent/US7078882B2/en
Publication of TW200513013A publication Critical patent/TW200513013A/zh
Application granted granted Critical
Publication of TWI299606B publication Critical patent/TWI299606B/zh

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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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/34—Snubber circuits
    • 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
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
    • 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
    • H02M1/34—Snubber circuits
    • H02M1/342—Active non-dissipative snubbers
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Description

1299606 五、發明說明（1) 發明所屬之技術領域 本發明有關於一種主動式知A $ ★轉換器之主動式電路，特別有關-種 先前技術 如第1 a及1 b圖中，—降懕刑d ^ 係搞接-輸入電磨Vin，狹/dC_t〇-dc的轉換電路！〇， LD。其中開關开、c…曼輪出一輸出電壓心至負載 仏 二 1 &會根據一外部作$切換，用以脾 輸出電壓Vc_穩定地維持 Γ二唬㈣用以將 叛出冤壓vc㈣低於一第一雷 田 S!導通、S2截止，使得私ΐ丰位（如h3V)時，開關元件 輪出雷g A +輪入電壓^11對電容C。充電，以拉高 輸出電麼VC0RE。反過來說，舍0 ^ Λ >1 ir X -μ 田飾出電壓同於一第二電壓準 位（如1. 4V)時，則開關元 电1 + gr. I； · 干2寻^通、S!截止’使得齡^入雷 壓V1 n停止對電容C。充電。 1私 忧付彻八電 然而，暫態響應係县^ 如處理器(CPU)由休眠模六二X拖於負載產生大變化時，例 模式切換到休眠模式時、Λ二換:二常：T ^ ΓΡΠ ώ_ π彳·^抬 叫參閱第1 a圖，舉例來說，當 由休眠換式切換到正常模式日寺，負載 重載’輸出電壓vC0RE的準位合瞻„、士私供 ^季載進入 合道，S „關-Γο 會柄間被拉低，故開關元件' 曰V k 4關兀件S2會截止，使得輸入電壓Vin對電容c 電，以拉高輸出電壓V 。吐B士 ^ ^ ^ ^ . 0充 VC〇RE 此日可，電感電流1L的變化率會 du Viyi — Vccal 為二/ °請參閱川圖，當cPU由正常模式切換 眠模式時，負載LD會由曹恭；佳人ά一邊： ^ . 合如古姑„關-#由重載進入輕載，輸出電壓vc_瞬間 a拉冋，故開關兀件&會導通、開關元件&會截止，使得
1299606 五、發明說明（7) 範圍當視後附之申請專利範圍所界定者為準。 第12頁 0660-9581 twf(nl);92003;DENNIS.ptd 1299606 _ 丨 … — 圖式簡單說明 1 lb圖為降壓型dc_to-dc的轉換電路之示意圖。 d卜表示本發明之具有主動式甜位電路的 dC轉換電路示意圖。 作的H ^為本發明中輸出電壓V圆與開關電晶體\之動 第4圖中所示為習知dc—— 轉換電路，於重載轉輕^換電路與本發明之 符號說明 1栽時暫態響應之比較圖 W :直流-直流電壓轉換電略· 2 0 :主動式鉗位電路； ’ 22 :杈低電路； 2 3 ··驅動器； 24 :判別電路； 25 ··比較器； 26 :偵測電路； 1 0 0 :電源供應系統； si、S2、s4 :開關電晶體；
Li、L。：電感， ci、C2、C3、C。··電容； 0660-9581 twf (nl) ;920Ci3;DENNIS.ptd 第13貢

Claims (1)

  1. 六、申請專利範圍 1 · 一種主動式鉗位雷 dc)轉換器，其令上述(1略」應用於~直流—直流（dc_t〇 — 以供應一輸出電壓至_負二c轉換器具有一輸出端，用 一判別電路，用以 上述主動式鉬位電路包括： 一既定電壓，於上述出=上述輪出電壓，其係預設〆第 輸出一第一致能信:ΐ輪出電壓超過上述策一 :一拉低電路，耦接 4、， 致能信號，拉低上述輪別電路，用以根據上也第一 一電感儲能元件，1具有二分一山 轉換器之輸出端；以及/、 一弟一端耦接於上述dc-to-dc 一第一開關元件，且女 端耦接上述dc-t0〜dc轉換：：：：接上述電感以及，另： 在上述電感儲能元件鱼、TO 輸入端，用以於其導通时 生一電路路徑，用以；:述t0-dc轉換器之輸入端間產 時，將#分放電t法二^述拉低電路拉低上述輸出電壓 器之輸入端。 L回收至上述電感與上述一dc轉換 上述項所述之主一電路，其V 命两玄測Ϊ路，耦接於該轉換器之輪出端，根據該輸出 產生一弟一電壓信號，其為該输出電壓之分壓，以及 一第二電壓!!號，其與該第一既定電壓相等:;以及 v 一比較器，耦接於該偵測電路，其係接收談第〆、第 =電壓信號:而於該第一電壓信號大於該第二電壓信號 ^產生σ亥弟致志信號’輸出至該拉低電路。
    第14頁 0660-9581twf2(nl);92003;DENNIS.ptc 1299606 9212659B 六、申請專利範圍 3 .申請專利範圍第1項所述之主動式鉗位電路，其中 上述第一開關元件為一二極體。 4 ·如申請專利範圍第3項所述之主動式鉗位電路，其 中上述拉低電路包括： 一開關電晶體，具有一第，端連接上述電感儲能元件 之一第二端與上述二極體之陽極，:以及一第二端耦接一接 地電位；以及 一驅動器，用以根據上述第〆致能信號，而導通上述 開關電晶體，以拉低上述輸出電壓。 5·如申請專利範圍第3項所述之主動式鉗位電路，其 中當跨在上述二極體二端之電麈差大於上述二極體之導通 電壓時，上述二極體會導通，用以在上述電感儲能元件與 上述dc-to-dc轉換器之輪入端之間產生一電流路徑。 6 ·如申睛專利範圍第1項所述之主動式钳位電路，其 中亡述dc-to-dc電壓轉換電路奚少包括： 一第=、第三開關元件以及/電感，耦接上述輸入電壓， ^ ^第、泰二開關元件係交替地導通，以維持上述輸出 f日守’上述第三開關元件導通，而上述輸出電壓低於 =既=，壓時，上述第二開關元件導通，並且上述第_ _ 疋包壓南於上述第二既定電壓，上述第二既定電壓高於上 述第三既定電壓。 ^ 電壓於一既定準位，其中上述輸出電壓高於一第二既定電 壓時，卜诂筮二日日^ — 嘗 既 7·、如申請專利範圍第1 述之主動式钳位電路，其 中上述dx —1〇一 dc鐘仏 、 / 、」一 得換器為一降塵遭（step-down，buck)dc-
    第15頁 曰 六、申請專利範圍 t〇 — dc轉換器。 8. —種主動式鉗位 其中上述dc-to-dc轉換^呈古應用於—h、t〇 —心轉換器， 電壓至一負載，上述二^ 一輪出端，用以供應一輸出 -偵測電路，4=位電路包括·· 據上述輸出電壓產生—a =~t〇—化轉換器之輸出端，根 ，-比較器，輕接上壓Ϊ號；-第二電壓信號； 第一、第二電壓信號 一電壓信號，根據上述 一電感，具# —第ΐ — 第—致能信號； 出端； 弟…接上述―。★轉換器之輸 一開關電晶體，具有一浐 ^ 述電感之一第二端與_接地兩位而及第〜端，分別耦接上 一極體’具有一端耦接上述 另一端耦接上述dc-t0〜dc轉換哭之一 ^ —第二端以及一 一驅動器，用以根據上述第一致=端’以及 開關電晶體，以拉低上述輪出電犀，i:唬，而導通上述 低上述輸出電壓時，上述二極體:二I當上述驅動器拉 收至上述電感與上述dc_t0_dc轉換哭之^部分放電電流回 9. 如申請專利範圍第8項所述之1動輪^端。 中當跨在上述二極體二端式鉗位電路、其 電壓時，上述二極體;述二極體之導通 心轉換器之輸人端之間產生-電流路i與上桃_t〇' 1 〇 · —種電源供應系統，包括： 一dc-to-(ic電壓轉換雷玫，田、一 土人 、甩路用以將一輸入電壓轉換成
    0660-9581twf2( η1)；92003;DENNIS.p t c
    第16頁 -SS__92126596 1299606 修正 月 曰 六、申請專利範圍 -輸：電μ，並藉由一輸出端輸出至一負載； 壓超測上述輸出電麗’當上述輪出電 :Ί 既夂電壓時，輪出一第一致能信號； 輸出端電感’具有-第-端連接於上述“dc轉換器之 一極體，具有一:端耦接上述電感以及一另一# _ # 上返dc-t0-dc轉換器之一輪入端；卩及 另Μ禺接 处产Ί拉低電路，耦接於上述判別電路，用以根攄上it、劲 I信號，拉低上述輪出雷m甘士 # μ、+、κ很據上这致 述輸出電壓時，上τ l”中田上述拉低電路拉低上 上述電感與上述^“極：係用以， 】Ί上由上 轉換器之輸入端。 中上述拉低電^第10項所述之電源供應系統，其 :及上迷一極體之陽極，以及一第二編妾一接地電位； 開關;器以：：，上述第；致能信號…通上述 . 拉低上述輸出電麇。 士 ^ •如申請專利範圍第10項所述之電源供應系統，i 中上^^o-艺電塵轉換電路至少包括： ^ 第、第二開關元件以及/電感儲能元件，.耦接上 入電壓，上逃第〜、第二開關元件係交替地導通，以 1# t述ί出電壓於〜既定準位，其中上述輸出電壓高於 弟一既疋電壓時，上述第二開關元件導通，而上述輸出
    0660-9581twf2(nl);92003;DENNIS.ptc 第17頁 1299606
TW092126596A 2003-09-26 2003-09-26 Active clamping circuit and power supply system using the same TW200513013A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW092126596A TW200513013A (en) 2003-09-26 2003-09-26 Active clamping circuit and power supply system using the same
US10/910,339 US7078882B2 (en) 2003-09-26 2004-08-04 Active clamping circuit and power supply system using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW092126596A TW200513013A (en) 2003-09-26 2003-09-26 Active clamping circuit and power supply system using the same

Publications (2)

Publication Number Publication Date
TW200513013A TW200513013A (en) 2005-04-01
TWI299606B true TWI299606B (zh) 2008-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
TW092126596A TW200513013A (en) 2003-09-26 2003-09-26 Active clamping circuit and power supply system using the same

Country Status (2)

Country Link
US (1) US7078882B2 (zh)
TW (1) TW200513013A (zh)

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US9389617B2 (en) 2013-02-19 2016-07-12 Nvidia Corporation Pulsed current sensing
US9395738B2 (en) 2013-01-28 2016-07-19 Nvidia Corporation Current-parking switching regulator with a split inductor
US9459635B2 (en) 2013-02-08 2016-10-04 Nvidia Corporation Current-parking switching regulator upstream controller
US9639102B2 (en) 2013-02-19 2017-05-02 Nvidia Corporation Predictive current sensing
US9800158B2 (en) 2013-01-30 2017-10-24 Nvidia Corporation Current-parking switching regulator downstream controller
US9804621B2 (en) 2013-02-05 2017-10-31 Nvidia Corporation Current-parking switching regulator downstream controller pre-driver

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US10797593B1 (en) * 2019-04-23 2020-10-06 Analog Devices International Unlimited Company Kappa switching DC-DC converter with continuous input and output currents
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9395738B2 (en) 2013-01-28 2016-07-19 Nvidia Corporation Current-parking switching regulator with a split inductor
US9800158B2 (en) 2013-01-30 2017-10-24 Nvidia Corporation Current-parking switching regulator downstream controller
US9804621B2 (en) 2013-02-05 2017-10-31 Nvidia Corporation Current-parking switching regulator downstream controller pre-driver
US9459635B2 (en) 2013-02-08 2016-10-04 Nvidia Corporation Current-parking switching regulator upstream controller
US9389617B2 (en) 2013-02-19 2016-07-12 Nvidia Corporation Pulsed current sensing
US9639102B2 (en) 2013-02-19 2017-05-02 Nvidia Corporation Predictive current sensing

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US7078882B2 (en) 2006-07-18
TW200513013A (en) 2005-04-01

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