TW201722027A - Automatically switching auxiliary winding power supply apparatus - Google Patents

Automatically switching auxiliary winding power supply apparatus Download PDF

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TW201722027A
TW201722027A TW104140193A TW104140193A TW201722027A TW 201722027 A TW201722027 A TW 201722027A TW 104140193 A TW104140193 A TW 104140193A TW 104140193 A TW104140193 A TW 104140193A TW 201722027 A TW201722027 A TW 201722027A
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auxiliary winding
voltage
diode
electrically connected
resistor
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TW104140193A
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TWI563773B (en
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陳建瑋
姚宇桐
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亞源科技股份有限公司
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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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

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Abstract

A first auxiliary winding and a second auxiliary winding induce a universal serial bus power supply apparatus, so that a first input side has a first voltage and a second input side has a second voltage. The second voltage is greater than the first voltage. When the first voltage is greater than a first predetermined voltage or the second voltage is greater than a second predetermined voltage, an auxiliary winding detecting-determination unit conducts a path from the first voltage to an auxiliary winding voltage output side. When the first voltage is smaller than or equal to the first predetermined voltage, or when the second voltage is smaller than or equal to the second predetermined voltage, the auxiliary winding detecting-determination unit conducts a path from the second voltage to the auxiliary winding voltage output side.

Description

自動切換之輔助繞組供電裝置Automatic switching auxiliary winding power supply device

本發明係有關於一種輔助繞組供電裝置，特別是一種自動切換之輔助繞組供電裝置。The invention relates to an auxiliary winding power supply device, in particular to an auxiliary winding auxiliary power supply device for automatic switching.

相關技術之電源供應器的變壓器的輔助繞組通常用來供電予相關技術之電源供應器之初級側之脈波寬度調變控制晶片；輔助繞組的電壓會受到相關技術之電源供應器的輸出電壓（次級側電壓）影響，因此脈波寬度調變控制晶片接收到的電力亦受影響；通常，穩壓電路會設置於輔助繞組與脈波寬度調變控制晶片之間，藉以穩定輔助繞組輸出至脈波寬度調變控制晶片的電力。The auxiliary winding of the transformer of the related art power supply is generally used to supply the pulse width modulation control chip of the primary side of the power supply of the related art; the voltage of the auxiliary winding is subjected to the output voltage of the power supply of the related art ( The secondary side voltage is affected, so the pulse width modulation control the power received by the wafer is also affected; usually, the voltage stabilizing circuit is disposed between the auxiliary winding and the pulse width modulation control chip, thereby stabilizing the auxiliary winding output to The pulse width modulation controls the power of the wafer.

然而，如果相關技術之電源供應器的輸出電壓變動極大，則上述穩壓電路內的電晶體會由於大範圍電壓變動及功耗過大而造成過熱，使得供電效率降低。例如，如果相關技術之電源供應器為通用串列匯流排供電裝置，則輸出電壓可為5、12或20伏特，其電壓變動極大（20伏特是5伏特的四倍）。However, if the output voltage of the related art power supply fluctuates greatly, the transistor in the above-mentioned voltage stabilizing circuit may overheat due to a large range of voltage fluctuation and excessive power consumption, resulting in a decrease in power supply efficiency. For example, if the related art power supply is a universal serial bus power supply, the output voltage can be 5, 12 or 20 volts, and its voltage varies greatly (20 volts is four times 5 volts).

為改善上述習知技術之缺點，本發明之目的在於提供一種自動切換之輔助繞組供電裝置。In order to improve the above disadvantages of the prior art, it is an object of the present invention to provide an auxiliary winding power supply device for automatic switching.

為達成本發明之上述目的，本發明之自動切換之輔助繞組供電裝置係應用於一通用串列匯流排供電裝置，該自動切換之輔助繞組供電裝置包含：一第一輔助繞組；一第二輔助繞組，該第二輔助繞組串聯或並聯連接該第一輔助繞組；一輔助繞組偵測判定單元，該輔助繞組偵測判定單元電性連接至該第一輔助繞組及該第二輔助繞組；一輔助繞組電壓輸出端，該輔助繞組電壓輸出端電性連接至該輔助繞組偵測判定單元；一第一輸入端，該第一輸入端設置於該第一輔助繞組及該輔助繞組偵測判定單元之間；及一第二輸入端，該第二輸入端設置於該第二輔助繞組及該輔助繞組偵測判定單元之間。其中該第一輔助繞組及該第二輔助繞組感應該通用串列匯流排供電裝置，使得該第一輸入端具有一第一電壓而該第二輸入端具有一第二電壓；該第二電壓大於該第一電壓；該輔助繞組偵測判定單元偵測該第一電壓或該第二電壓；當該第一電壓大於一第一預設電壓或該第二電壓大於一第二預設電壓時，該輔助繞組偵測判定單元導通由該第一電壓至該輔助繞組電壓輸出端之路徑；當該第一電壓小於或等於該第一預設電壓，或該第二電壓小於或等於該第二預設電壓時，該輔助繞組偵測判定單元導通由該第二電壓至該輔助繞組電壓輸出端之路徑。In order to achieve the above object of the present invention, the automatic switching auxiliary winding power supply device of the present invention is applied to a universal serial bus power supply device, and the automatic switching auxiliary winding power supply device comprises: a first auxiliary winding; a second auxiliary a winding, the second auxiliary winding is connected to the first auxiliary winding in series or in parallel; an auxiliary winding detection determining unit, the auxiliary winding detecting and determining unit is electrically connected to the first auxiliary winding and the second auxiliary winding; a winding voltage output end, the auxiliary winding voltage output end is electrically connected to the auxiliary winding detecting and determining unit; a first input end, the first input end is disposed in the first auxiliary winding and the auxiliary winding detecting and determining unit And a second input end disposed between the second auxiliary winding and the auxiliary winding detection determining unit. The first auxiliary winding and the second auxiliary winding sense the universal serial bus power supply device such that the first input has a first voltage and the second input has a second voltage; the second voltage is greater than The first voltage; the auxiliary winding detection determining unit detects the first voltage or the second voltage; when the first voltage is greater than a first predetermined voltage or the second voltage is greater than a second predetermined voltage, The auxiliary winding detection determining unit turns on a path from the first voltage to the auxiliary winding voltage output end; when the first voltage is less than or equal to the first preset voltage, or the second voltage is less than or equal to the second pre- When the voltage is set, the auxiliary winding detection determining unit turns on the path from the second voltage to the voltage output end of the auxiliary winding.

本發明之功效在於避免輔助繞組供電裝置內的電晶體由於大範圍電壓變動及功耗過大所造成的過熱，使得供電效率能提高。The effect of the invention is to avoid overheating caused by the transistor in the auxiliary winding power supply device due to a wide range of voltage fluctuations and excessive power consumption, so that the power supply efficiency can be improved.

有關本發明的詳細說明及技術內容，請參閱以下的詳細說明和附圖說明如下，而附圖與詳細說明僅作為說明之用，並非用於限制本發明。The detailed description and the technical description of the present invention are to be understood as the

請參考圖1，其係為本發明之自動切換之輔助繞組供電裝置之第一實施例電路圖。一自動切換之輔助繞組供電裝置10係應用於一通用串列匯流排供電裝置20（例如使用Flyback電路架構）。Please refer to FIG. 1, which is a circuit diagram of a first embodiment of an auxiliary winding power supply device for automatic switching according to the present invention. An automatically switched auxiliary winding power supply unit 10 is applied to a universal serial bus power supply unit 20 (e.g., using a Flyback circuit architecture).

該自動切換之輔助繞組供電裝置10包含一第一輔助繞組102、一第二輔助繞組104、一輔助繞組偵測判定單元106、一輔助繞組電壓輸出端108、一第一輸入端AuxL及一第二輸入端AuxH。The automatic switching auxiliary winding power supply device 10 includes a first auxiliary winding 102, a second auxiliary winding 104, an auxiliary winding detection determining unit 106, an auxiliary winding voltage output terminal 108, a first input terminal AuxL and a first Two inputs AuxH.

該通用串列匯流排供電裝置20包含一電壓輸入端202、一第七電容204、一第八電阻206、一第五二極體208、一第六電晶體210、一變壓器初級側繞組212、一變壓器次級側繞組214、一第六二極體216、一第八電容218及一通用串列匯流排電壓輸出端220。The universal serial bus power supply device 20 includes a voltage input terminal 202, a seventh capacitor 204, an eighth resistor 206, a fifth diode 208, a sixth transistor 210, and a transformer primary side winding 212. A transformer secondary side winding 214, a sixth diode 216, an eighth capacitor 218 and a universal serial bus voltage output terminal 220.

在一具體實施例但不限制本發明，該變壓器初級側繞組212、該變壓器次級側繞組214、該第一輔助繞組102及該第二輔助繞組104係組成一變壓器。In one embodiment, but not limiting, the transformer primary side winding 212, the transformer secondary side winding 214, the first auxiliary winding 102, and the second auxiliary winding 104 form a transformer.

該輔助繞組偵測判定單元106電性連接至該第一輔助繞組102及該第二輔助繞組104；該輔助繞組電壓輸出端108電性連接至該輔助繞組偵測判定單元106；該第一輸入端AuxL設置於該第一輔助繞組102、該第二輔助繞組104及該輔助繞組偵測判定單元106之間；該第二輸入端AuxH設置於該第二輔助繞組104及該輔助繞組偵測判定單元106之間。The auxiliary winding detection determining unit 106 is electrically connected to the first auxiliary winding 102 and the second auxiliary winding 104; the auxiliary winding voltage output terminal 108 is electrically connected to the auxiliary winding detection determining unit 106; the first input The terminal AuxL is disposed between the first auxiliary winding 102, the second auxiliary winding 104 and the auxiliary winding detection determining unit 106; the second input terminal AuxH is disposed in the second auxiliary winding 104 and the auxiliary winding detecting determination Between units 106.

該第一輔助繞組102及該第二輔助繞組104感應該通用串列匯流排供電裝置20（例如感應該變壓器次級側繞組214），使得該第一輸入端AuxL具有一第一電壓110而該第二輸入端AuxH具有一第二電壓112；該第二電壓112大於該第一電壓110。由於該第二輔助繞組104係串聯連接該第一輔助繞組102，故該第二電壓112大於該第一電壓110。The first auxiliary winding 102 and the second auxiliary winding 104 sense the universal serial bus power supply device 20 (for example, inducing the transformer secondary side winding 214) such that the first input terminal AuxL has a first voltage 110 The second input terminal AuxH has a second voltage 112; the second voltage 112 is greater than the first voltage 110. Since the second auxiliary winding 104 is connected in series to the first auxiliary winding 102, the second voltage 112 is greater than the first voltage 110.

該輔助繞組偵測判定單元106偵測該第一電壓110或該第二電壓112。當該第一電壓110大於一第一預設電壓或該第二電壓112大於一第二預設電壓時，該輔助繞組偵測判定單元106導通由該第一電壓110（即該第一輸入端AuxL）至該輔助繞組電壓輸出端108之路徑但不導通由該第二電壓112（即該第二輸入端AuxH）至該輔助繞組電壓輸出端108之路徑，使得該輔助繞組偵測判定單元106接收該第一電壓110並處理該第一電壓110以供電至該輔助繞組電壓輸出端108。The auxiliary winding detection determining unit 106 detects the first voltage 110 or the second voltage 112. When the first voltage 110 is greater than a first predetermined voltage or the second voltage 112 is greater than a second predetermined voltage, the auxiliary winding detection determining unit 106 is turned on by the first voltage 110 (ie, the first input end AuxL) a path to the auxiliary winding voltage output terminal 108 but does not conduct a path from the second voltage 112 (ie, the second input terminal AuxH) to the auxiliary winding voltage output terminal 108, such that the auxiliary winding detection determining unit 106 The first voltage 110 is received and processed to supply the auxiliary winding voltage output 108 to the first voltage 110.

當該第一電壓110小於或等於該第一預設電壓，或該第二電壓112小於或等於該第二預設電壓時，該輔助繞組偵測判定單元106導通由該第二電壓112（即該第二輸入端AuxH）至該輔助繞組電壓輸出端108之路徑但不導通由該第一電壓110（即該第一輸入端AuxL）至該輔助繞組電壓輸出端108之路徑，使得該輔助繞組偵測判定單元106接收該第二電壓112並處理該第二電壓112以供電至該輔助繞組電壓輸出端108。When the first voltage 110 is less than or equal to the first preset voltage, or the second voltage 112 is less than or equal to the second preset voltage, the auxiliary winding detection determining unit 106 is turned on by the second voltage 112 (ie, a path from the second input terminal AuxH) to the auxiliary winding voltage output terminal 108 but not a path from the first voltage 110 (ie, the first input terminal AuxL) to the auxiliary winding voltage output terminal 108, such that the auxiliary winding The detection determination unit 106 receives the second voltage 112 and processes the second voltage 112 to supply power to the auxiliary winding voltage output 108.

例如，如果該第一預設電壓為15伏特，該第二預設電壓為30伏特，該第一電壓110為20伏特，該第二電壓112為40伏特，則該輔助繞組偵測判定單元106導通由該第一電壓110（即該第一輸入端AuxL）至該輔助繞組電壓輸出端108之路徑但不導通由該第二電壓112（即該第二輸入端AuxH）至該輔助繞組電壓輸出端108之路徑，使得該輔助繞組偵測判定單元106接收該第一電壓110並處理該第一電壓110以供電至該輔助繞組電壓輸出端108。For example, if the first preset voltage is 15 volts, the second preset voltage is 30 volts, the first voltage 110 is 20 volts, and the second voltage 112 is 40 volts, the auxiliary winding detection determining unit 106 Conducting a path from the first voltage 110 (ie, the first input terminal AuxL) to the auxiliary winding voltage output terminal 108 but not conducting the second voltage 112 (ie, the second input terminal AuxH) to the auxiliary winding voltage output The path of the terminal 108 is such that the auxiliary winding detection determining unit 106 receives the first voltage 110 and processes the first voltage 110 to supply power to the auxiliary winding voltage output terminal 108.

又例如，如果該第一預設電壓為15伏特，該第二預設電壓為30伏特，該第一電壓110為10伏特，該第二電壓112為20伏特，則該輔助繞組偵測判定單元106導通由該第二電壓112（即該第二輸入端AuxH）至該輔助繞組電壓輸出端108之路徑但不導通由該第一電壓110（即該第一輸入端AuxL）至該輔助繞組電壓輸出端108之路徑，使得該輔助繞組偵測判定單元106接收該第二電壓112並處理該第二電壓112以供電至該輔助繞組電壓輸出端108。For another example, if the first preset voltage is 15 volts, the second preset voltage is 30 volts, the first voltage 110 is 10 volts, and the second voltage 112 is 20 volts, the auxiliary winding detection determining unit 106 conducting a path from the second voltage 112 (ie, the second input terminal AuxH) to the auxiliary winding voltage output terminal 108 but not conducting the first voltage 110 (ie, the first input terminal AuxL) to the auxiliary winding voltage The path of the output terminal 108 is such that the auxiliary winding detection determining unit 106 receives the second voltage 112 and processes the second voltage 112 to supply power to the auxiliary winding voltage output terminal 108.

再者，在一具體實施例，該輔助繞組偵測判定單元106係通過該輔助繞組電壓輸出端108供電至該通用串列匯流排供電裝置20之一脈波寬度調變控制晶片（未示於圖1）。該第二預設電壓大於該第一預設電壓。圖1所示為一中心抽頭輔助繞組供電方式。Furthermore, in an embodiment, the auxiliary winding detection determining unit 106 supplies power to the pulse width modulation control chip of the universal serial bus power supply device 20 through the auxiliary winding voltage output terminal 108 (not shown). figure 1). The second preset voltage is greater than the first preset voltage. Figure 1 shows a center-tapped auxiliary winding power supply.

請參考圖2，其係為本發明之自動切換之輔助繞組供電裝置之第二實施例電路圖。圖2所示之元件敘述與圖1相似者，為簡潔因素，於此不再贅述。在圖1當中，該第二輔助繞組104係串聯連接該第一輔助繞組102；而在圖2當中，該第二輔助繞組104係並聯連接該第一輔助繞組102，且該第二輔助繞組104的繞組圈數大於該第一輔助繞組102的繞組圈數，使得該第二電壓112大於該第一電壓110。其中該第一輸入端AuxL設置於該第一輔助繞組102及該輔助繞組偵測判定單元106之間；該第二輸入端AuxH設置於該第二輔助繞組104及該輔助繞組偵測判定單元106之間。Please refer to FIG. 2, which is a circuit diagram of a second embodiment of the automatic winding auxiliary winding power supply device of the present invention. The components shown in FIG. 2 are similar to those in FIG. 1 and are for brevity and will not be described again. In FIG. 1, the second auxiliary winding 104 is connected in series to the first auxiliary winding 102; and in FIG. 2, the second auxiliary winding 104 is connected in parallel to the first auxiliary winding 102, and the second auxiliary winding 104 is connected. The number of winding turns is greater than the number of turns of the first auxiliary winding 102 such that the second voltage 112 is greater than the first voltage 110. The first input terminal AuxL is disposed between the first auxiliary winding 102 and the auxiliary winding detection determining unit 106. The second input terminal AuxH is disposed in the second auxiliary winding 104 and the auxiliary winding detecting and determining unit 106. between.

請參考圖3，其係為本發明之輔助繞組偵測判定單元之第一實施例電路圖。該輔助繞組偵測判定單元106包含一第一二極體114、一第一電容116、一第一電阻118、一第一電晶體120、一第一齊納二極體122（例如為穩壓15伏特之齊納二極體）、一第二二極體124、一第二電容126、一第三電容128、一第四電容130、一第二電晶體132、一第二電阻134、一第三電阻136、一第四電阻138、一第三電晶體140、一第四電晶體142、一第五電容144、一第五電阻146、一第六電阻148、一第三二極體150、一第六電容152、一第四二極體154、一第五電晶體156、一第七電阻158及一第二齊納二極體160（例如為穩壓15伏特之齊納二極體）。Please refer to FIG. 3, which is a circuit diagram of a first embodiment of the auxiliary winding detection determining unit of the present invention. The auxiliary winding detection determining unit 106 includes a first diode 114, a first capacitor 116, a first resistor 118, a first transistor 120, and a first Zener diode 122 (for example, voltage regulator). a Zener diode of 15 volts, a second diode 124, a second capacitor 126, a third capacitor 128, a fourth capacitor 130, a second transistor 132, a second resistor 134, and a second resistor 134. The third resistor 136 , the fourth resistor 138 , the third transistor 140 , the fourth transistor 142 , the fifth capacitor 144 , the fifth resistor 146 , the sixth resistor 148 , and the third diode 150 . a sixth capacitor 152, a fourth diode 154, a fifth transistor 156, a seventh resistor 158 and a second Zener diode 160 (for example, a Zener diode with a voltage regulation of 15 volts) ).

該第一二極體114電性連接至該第二輸入端AuxH；該第一電容116電性連接至該第一二極體114；該第一電阻118電性連接至該第一二極體114；該第一電晶體120電性連接至該第一二極體114；該第一齊納二極體122電性連接至該第一電晶體120；該第二二極體124電性連接至該第一輸入端AuxL；該第二電容126電性連接至該第二二極體124；該第三電容128電性連接至該輔助繞組電壓輸出端108；該第四電容130電性連接至該第一電晶體120；該第二電晶體132電性連接至該第一電晶體120；該第二電阻134電性連接至該第一電晶體120；該第三電阻136電性連接至該第一電晶體120及該第二電晶體132；該第四電阻138電性連接至該第三電阻136及該第二電晶體132；該第三電晶體140電性連接至該第二電阻134及該第四電阻138；該第四電晶體142電性連接至該第二電阻134及該第三電晶體140；該第五電容144電性連接至該第四電晶體142；該第五電阻146電性連接至該第四電晶體142；該第六電阻148電性連接至該第四電晶體142及該第二二極體124；該第三二極體150電性連接至該第二電晶體132及該輔助繞組電壓輸出端108；該第六電容152電性連接至該第二電晶體132及該第三二極體150；該第四二極體154電性連接至該第三二極體150及該輔助繞組電壓輸出端108；該第五電晶體156電性連接至該第二二極體124及該第四二極體154；該第七電阻158電性連接至該第二二極體124及該第五電晶體156；該第二齊納二極體160電性連接至該第五電晶體156及該第七電阻158。The first diode 112 is electrically connected to the second input terminal AuxH; the first capacitor 116 is electrically connected to the first diode 114; the first resistor 118 is electrically connected to the first diode The first transistor 120 is electrically connected to the first diode 114; the first Zener diode 122 is electrically connected to the first transistor 120; the second diode 124 is electrically connected To the first input terminal AuxL; the second capacitor 126 is electrically connected to the second diode 124; the third capacitor 128 is electrically connected to the auxiliary winding voltage output terminal 108; the fourth capacitor 130 is electrically connected To the first transistor 120; the second transistor 132 is electrically connected to the first transistor 120; the second resistor 134 is electrically connected to the first transistor 120; the third resistor 136 is electrically connected to The first transistor 120 and the second transistor 132 are electrically connected to the third resistor 136 and the second transistor 132. The third transistor 140 is electrically connected to the second resistor 134 and the fourth resistor 138; the fourth transistor 142 is electrically connected to the second resistor 134 and the third transistor 140; the fifth capacitor 144 The fourth resistor 146 is electrically connected to the fourth transistor 142; the sixth resistor 148 is electrically connected to the fourth transistor 142 and the second diode 124; The third diode 150 is electrically connected to the second transistor 132 and the auxiliary winding voltage output terminal 108; the sixth capacitor 152 is electrically connected to the second transistor 132 and the third diode 150; The fourth diode 154 is electrically connected to the third diode 150 and the auxiliary winding voltage output terminal 108; the fifth transistor 156 is electrically connected to the second diode 124 and the fourth diode The second resistor 158 is electrically connected to the second diode 124 and the fifth transistor 156; the second Zener diode 160 is electrically connected to the fifth transistor 156 and the seventh Resistor 158.

其中，該第四電晶體142、該第五電容144、該第五電阻146及該第六電阻148係組成一電壓偵測電路以透過該第一二極體114偵測該第二輸入端AuxH之該第二電壓112。The fourth transistor 142, the fifth capacitor 144, the fifth resistor 146, and the sixth resistor 148 form a voltage detecting circuit for detecting the second input terminal AuxH through the first diode 114. The second voltage 112.

如果該第二電壓112為40伏特，則該電壓偵測電路動作（即該第四電晶體142導通至地），因此該第三電晶體140、該第二電晶體132及該第三二極體150不導通。該第一電壓110為20伏特，則該第四二極體154被順偏導通。此時由該第一電壓110供電。If the second voltage 112 is 40 volts, the voltage detecting circuit operates (ie, the fourth transistor 142 is turned to ground), and thus the third transistor 140, the second transistor 132, and the third diode Body 150 does not conduct. The first voltage 110 is 20 volts, and the fourth diode 154 is turned on. At this time, the first voltage 110 is supplied with power.

如果該第二電壓112為20伏特，則該電壓偵測電路不動作（即該第四電晶體142不導通至地），因此該第一電晶體120、該第二電晶體132及該第三二極體150導通。該第一電壓110為10伏特，則該第四二極體154被逆偏截止。此時由該第二電壓112供電。If the second voltage 112 is 20 volts, the voltage detecting circuit does not operate (ie, the fourth transistor 142 is not conductive to ground), and thus the first transistor 120, the second transistor 132, and the third The diode 150 is turned on. The first voltage 110 is 10 volts, and the fourth diode 154 is reverse biased off. At this time, the second voltage 112 is supplied with power.

請參考圖4，其係為本發明之輔助繞組偵測判定單元之第二實施例電路圖。該輔助繞組偵測判定單元106包含一第一二極體114、一第一電容116、一第一電阻118、一第一電晶體120、一第一齊納二極體122（例如為穩壓15伏特之齊納二極體）、一第二二極體124、一第二電容126、一第三電容128、一第三二極體150、一第四二極體154、一第二電阻134、一第二齊納二極體160（例如為穩壓12伏特之齊納二極體）、一第三電阻136、一第四電阻138及一第二電晶體132。Please refer to FIG. 4, which is a circuit diagram of a second embodiment of the auxiliary winding detection determining unit of the present invention. The auxiliary winding detection determining unit 106 includes a first diode 114, a first capacitor 116, a first resistor 118, a first transistor 120, and a first Zener diode 122 (for example, voltage regulator). a 15 volt Zener diode, a second diode 124, a second capacitor 126, a third capacitor 128, a third diode 150, a fourth diode 154, and a second resistor 134. A second Zener diode 160 (for example, a Zener diode with a voltage of 12 volts), a third resistor 136, a fourth resistor 138, and a second transistor 132.

該第一二極體114電性連接至該第二輸入端AuxH；該第一電容116電性連接至該第一二極體114；該第一電阻118電性連接至該第一二極體114；該第一電晶體120電性連接至該第一二極體114；該第一齊納二極體122電性連接至該第一電晶體120；該第二二極體124電性連接至該第一輸入端AuxL；該第二電容126電性連接至該第二二極體124；該第三電容128電性連接至該輔助繞組電壓輸出端108；該第三二極體150電性連接至該第一電晶體120及該輔助繞組電壓輸出端108；該第四二極體154電性連接至該第三二極體150、該輔助繞組電壓輸出端108及該第二二極體124；該第二電阻134電性連接至該第一電晶體120、該第一電阻118及該第一齊納二極體122；該第二齊納二極體160電性連接至該第二二極體124及該第四二極體154；該第三電阻136電性連接至該第二齊納二極體160；該第四電阻138電性連接至該第三電阻136及該第二齊納二極體160；該第二電晶體132電性連接至該第二電阻134及該第四電阻138。The first diode 112 is electrically connected to the second input terminal AuxH; the first capacitor 116 is electrically connected to the first diode 114; the first resistor 118 is electrically connected to the first diode The first transistor 120 is electrically connected to the first diode 114; the first Zener diode 122 is electrically connected to the first transistor 120; the second diode 124 is electrically connected To the first input terminal AuxL; the second capacitor 126 is electrically connected to the second diode 124; the third capacitor 128 is electrically connected to the auxiliary winding voltage output terminal 108; the third diode 150 is electrically The second diode 154 is electrically connected to the third diode 150, the auxiliary winding voltage output terminal 108, and the second diode. The second resistor 134 is electrically connected to the first transistor 120, the first resistor 118 and the first Zener diode 122; the second Zener diode 160 is electrically connected to the body a second diode 136 and the fourth diode 154; the third resistor 136 is electrically connected to the second Zener diode 160; the fourth resistor 138 is electrically connected to A third resistor 136 and the second zener diode 160; the second electric crystal 132 is electrically connected to the second resistor 134 and the fourth resistor 138.

其中，該第三電阻136、該第四電阻138及該第二齊納二極體160組成一電壓偵測電路。The third resistor 136, the fourth resistor 138 and the second Zener diode 160 form a voltage detecting circuit.

如果該第一電壓110為20伏特，則該第二電晶體132導通至地，並拉下該第二電阻134使該第一電晶體120不導通；此時由該第一電壓110供電。If the first voltage 110 is 20 volts, the second transistor 132 is turned on to the ground, and the second resistor 134 is pulled down to make the first transistor 120 non-conductive; at this time, the first voltage 110 is powered.

如果該第一電壓110為10伏特，則該電壓偵測電路截止，該第二電晶體132不導通，因此由該第一電阻118、該第一電晶體120及該第一齊納二極體122所組成之穩壓電路開始動作；由於該第一電晶體120所輸出至該輔助繞組電壓輸出端108的電壓比該第一電壓110為高，因此該第四二極體154被逆偏截止。此時由該第二電壓112（20伏特）供電。If the first voltage 110 is 10 volts, the voltage detecting circuit is turned off, and the second transistor 132 is not turned on, so the first resistor 118, the first transistor 120, and the first Zener diode are The voltage stabilizing circuit composed of 122 starts to operate; since the voltage outputted by the first transistor 120 to the auxiliary winding voltage output terminal 108 is higher than the first voltage 110, the fourth diode 154 is reverse biased. . At this time, the second voltage 112 (20 volts) is supplied with power.

本發明之功效在於避免輔助繞組供電裝置內的電晶體由於大範圍電壓變動及功耗過大所造成的過熱，使得供電效率能提高。The effect of the invention is to avoid overheating caused by the transistor in the auxiliary winding power supply device due to a wide range of voltage fluctuations and excessive power consumption, so that the power supply efficiency can be improved.

然以上所述者，僅為本發明之較佳實施例，當不能限定本發明實施之範圍，即凡依本發明申請專利範圍所作之均等變化與修飾等，皆應仍屬本發明之專利涵蓋範圍意圖保護之範疇。本發明還可有其它多種實施例，在不背離本發明精神及其實質的情況下，熟悉本領域的技術人員當可根據本發明作出各種相應的改變和變形，但這些相應的改變和變形都應屬於本發明所附的權利要求的保護範圍。綜上所述，當知本發明已具有產業利用性、新穎性與進步性，又本發明之構造亦未曾見於同類產品及公開使用，完全符合發明專利申請要件，爰依專利法提出申請。However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still be covered by the patent of the present invention. The scope of the scope is intended to protect. The invention may be embodied in various other modifications and changes without departing from the spirit and scope of the inventions. It is intended to fall within the scope of the appended claims. In summary, it is known that the present invention has industrial applicability, novelty and advancement, and the structure of the present invention has not been seen in similar products and public use, and fully complies with the requirements of the invention patent application, and is filed according to the patent law.

10‧‧‧自動切換之輔助繞組供電裝置10‧‧‧Automatically switched auxiliary winding power supply

20‧‧‧通用串列匯流排供電裝置20‧‧‧Common serial busbar power supply unit

102‧‧‧第一輔助繞組102‧‧‧First auxiliary winding

104‧‧‧第二輔助繞組104‧‧‧Second auxiliary winding

106‧‧‧輔助繞組偵測判定單元106‧‧‧Auxiliary winding detection and determination unit

108‧‧‧輔助繞組電壓輸出端108‧‧‧Auxiliary winding voltage output

110‧‧‧第一電壓110‧‧‧First voltage

112‧‧‧第二電壓112‧‧‧second voltage

114‧‧‧第一二極體114‧‧‧First Diode

116‧‧‧第一電容116‧‧‧First capacitor

118‧‧‧第一電阻118‧‧‧First resistance

120‧‧‧第一電晶體120‧‧‧First transistor

122‧‧‧第一齊納二極體122‧‧‧First Zener diode

124‧‧‧第二二極體124‧‧‧second diode

126‧‧‧第二電容126‧‧‧second capacitor

128‧‧‧第三電容128‧‧‧ third capacitor

130‧‧‧第四電容130‧‧‧fourth capacitor

132‧‧‧第二電晶體132‧‧‧Second transistor

134‧‧‧第二電阻134‧‧‧second resistance

136‧‧‧第三電阻136‧‧‧ Third resistor

138‧‧‧第四電阻138‧‧‧fourth resistor

140‧‧‧第三電晶體140‧‧‧ Third transistor

142‧‧‧第四電晶體142‧‧‧4th transistor

144‧‧‧第五電容144‧‧‧ fifth capacitor

146‧‧‧第五電阻146‧‧‧ fifth resistor

148‧‧‧第六電阻148‧‧‧6th resistor

150‧‧‧第三二極體150‧‧‧third diode

152‧‧‧第六電容152‧‧‧ sixth capacitor

154‧‧‧第四二極體154‧‧‧ fourth diode

156‧‧‧第五電晶體156‧‧‧ fifth transistor

158‧‧‧第七電阻158‧‧‧ seventh resistor

160‧‧‧第二齊納二極體160‧‧‧Second Zener diode

202‧‧‧電壓輸入端202‧‧‧Voltage input

204‧‧‧第七電容204‧‧‧ seventh capacitor

206‧‧‧第八電阻206‧‧‧8th resistor

208‧‧‧第五二極體208‧‧‧ fifth diode

210‧‧‧第六電晶體210‧‧‧ sixth transistor

212‧‧‧變壓器初級側繞組212‧‧‧ Transformer primary side winding

214‧‧‧變壓器次級側繞組214‧‧‧Transformer secondary winding

216‧‧‧第六二極體216‧‧‧ sixth diode

218‧‧‧第八電容218‧‧‧ eighth capacitor

220‧‧‧通用串列匯流排電壓輸出端220‧‧‧Universal serial bus voltage output

AuxL‧‧‧第一輸入端AuxL‧‧‧ first input

AuxH‧‧‧第二輸入端AuxH‧‧‧ second input

圖1為本發明之自動切換之輔助繞組供電裝置之第一實施例電路圖。1 is a circuit diagram of a first embodiment of an automatic winding auxiliary winding power supply device of the present invention.

圖2為本發明之自動切換之輔助繞組供電裝置之第二實施例電路圖。2 is a circuit diagram of a second embodiment of an automatic winding auxiliary winding power supply device of the present invention.

圖3為本發明之輔助繞組偵測判定單元之第一實施例電路圖。3 is a circuit diagram of a first embodiment of an auxiliary winding detection determining unit of the present invention.

圖4為本發明之輔助繞組偵測判定單元之第二實施例電路圖。4 is a circuit diagram of a second embodiment of the auxiliary winding detection determining unit of the present invention.

10‧‧‧自動切換之輔助繞組供電裝置 10‧‧‧Automatically switched auxiliary winding power supply

20‧‧‧通用串列匯流排供電裝置 20‧‧‧Common serial busbar power supply unit

102‧‧‧第一輔助繞組 102‧‧‧First auxiliary winding

104‧‧‧第二輔助繞組 104‧‧‧Second auxiliary winding

106‧‧‧輔助繞組偵測判定單元 106‧‧‧Auxiliary winding detection and determination unit

108‧‧‧輔助繞組電壓輸出端 108‧‧‧Auxiliary winding voltage output

110‧‧‧第一電壓 110‧‧‧First voltage

112‧‧‧第二電壓 112‧‧‧second voltage

202‧‧‧電壓輸入端 202‧‧‧Voltage input

204‧‧‧第七電容 204‧‧‧ seventh capacitor

206‧‧‧第八電阻 206‧‧‧8th resistor

208‧‧‧第五二極體 208‧‧‧ fifth diode

210‧‧‧第六電晶體 210‧‧‧ sixth transistor

212‧‧‧變壓器初級側繞組 212‧‧‧ Transformer primary side winding

214‧‧‧變壓器次級側繞組 214‧‧‧Transformer secondary winding

216‧‧‧第六二極體 216‧‧‧ sixth diode

218‧‧‧第八電容 218‧‧‧ eighth capacitor

220‧‧‧通用串列匯流排電壓輸出端 220‧‧‧Universal serial bus voltage output

AuxL‧‧‧第一輸入端 AuxL‧‧‧ first input

AuxH‧‧‧第二輸入端 AuxH‧‧‧ second input

Claims (10)

一種自動切換之輔助繞組供電裝置，係應用於一通用串列匯流排供電裝置，該自動切換之輔助繞組供電裝置包含： 一第一輔助繞組； 一第二輔助繞組，該第二輔助繞組串聯或並聯連接該第一輔助繞組； 一輔助繞組偵測判定單元，該輔助繞組偵測判定單元電性連接至該第一輔助繞組及該第二輔助繞組； 一輔助繞組電壓輸出端，該輔助繞組電壓輸出端電性連接至該輔助繞組偵測判定單元； 一第一輸入端，該第一輸入端設置於該第一輔助繞組及該輔助繞組偵測判定單元之間；及 一第二輸入端，該第二輸入端設置於該第二輔助繞組及該輔助繞組偵測判定單元之間， 其中該第一輔助繞組及該第二輔助繞組感應該通用串列匯流排供電裝置，使得該第一輸入端具有一第一電壓而該第二輸入端具有一第二電壓；該第二電壓大於該第一電壓；該輔助繞組偵測判定單元偵測該第一電壓或該第二電壓；當該第一電壓大於一第一預設電壓或該第二電壓大於一第二預設電壓時，該輔助繞組偵測判定單元導通由該第一電壓至該輔助繞組電壓輸出端之路徑；當該第一電壓小於或等於該第一預設電壓，或該第二電壓小於或等於該第二預設電壓時，該輔助繞組偵測判定單元導通由該第二電壓至該輔助繞組電壓輸出端之路徑。An automatic switching auxiliary winding power supply device is applied to a universal serial bus power supply device, and the automatic switching auxiliary winding power supply device comprises: a first auxiliary winding; a second auxiliary winding, the second auxiliary winding is connected in series or Connecting the first auxiliary winding in parallel; an auxiliary winding detection determining unit, the auxiliary winding detecting determining unit is electrically connected to the first auxiliary winding and the second auxiliary winding; an auxiliary winding voltage output end, the auxiliary winding voltage The output end is electrically connected to the auxiliary winding detection determining unit; a first input end, the first input end is disposed between the first auxiliary winding and the auxiliary winding detecting and determining unit; and a second input end, The second input end is disposed between the second auxiliary winding and the auxiliary winding detection determining unit, wherein the first auxiliary winding and the second auxiliary winding sense the universal serial bus power supply device, so that the first input The terminal has a first voltage and the second input has a second voltage; the second voltage is greater than the first voltage; the auxiliary winding detects the determination The unit detects the first voltage or the second voltage; when the first voltage is greater than a first predetermined voltage or the second voltage is greater than a second predetermined voltage, the auxiliary winding detection determining unit is turned on by the first a path to a voltage output end of the auxiliary winding; the auxiliary winding detection determining unit when the first voltage is less than or equal to the first predetermined voltage, or the second voltage is less than or equal to the second predetermined voltage A path from the second voltage to the output voltage of the auxiliary winding is turned on. 如申請專利範圍第1項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元包含： 一第一二極體，該第一二極體電性連接至該第二輸入端； 一第一電容，該第一電容電性連接至該第一二極體； 一第一電阻，該第一電阻電性連接至該第一二極體； 一第一電晶體，該第一電晶體電性連接至該第一二極體；及 一第一齊納二極體，該第一齊納二極體電性連接至該第一電晶體。The auxiliary winding detection and determination unit of the automatic switching as described in claim 1, wherein the auxiliary winding detection determining unit comprises: a first diode, the first diode is electrically connected to the second input a first capacitor, the first capacitor is electrically connected to the first diode; a first resistor, the first resistor is electrically connected to the first diode; a first transistor, the first The transistor is electrically connected to the first diode; and a first Zener diode electrically connected to the first transistor. 如申請專利範圍第2項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第二二極體，該第二二極體電性連接至該第一輸入端； 一第二電容，該第二電容電性連接至該第二二極體；及 一第三電容，該第三電容電性連接至該輔助繞組電壓輸出端。The auxiliary winding detection determining unit further includes: a second diode, the second diode is electrically connected to the first input, and the auxiliary winding detection determining unit further includes: a second capacitor, the second capacitor is electrically connected to the second diode; and a third capacitor is electrically connected to the auxiliary winding voltage output end. 如申請專利範圍第3項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第四電容，該第四電容電性連接至該第一電晶體； 一第二電晶體，該第二電晶體電性連接至該第一電晶體；及 一第二電阻，該第二電阻電性連接至該第一電晶體。The auxiliary winding detection determining unit further includes: a fourth capacitor electrically connected to the first transistor; a second transistor electrically connected to the first transistor; and a second resistor electrically connected to the first transistor. 如申請專利範圍第4項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第三電阻，該第三電阻電性連接至該第一電晶體及該第二電晶體； 一第四電阻，該第四電阻電性連接至該第三電阻及該第二電晶體；及 一第三電晶體，該第三電晶體電性連接至該第二電阻及該第四電阻。The auxiliary winding detection determining unit further includes: a third resistor electrically connected to the first transistor and the third a second resistor electrically connected to the third resistor and the second transistor; and a third transistor electrically connected to the second resistor and the third resistor The fourth resistor. 如申請專利範圍第5項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第四電晶體，該第四電晶體電性連接至該第二電阻及該第三電晶體； 一第五電容，該第五電容電性連接至該第四電晶體； 一第五電阻，該第五電阻電性連接至該第四電晶體；及 一第六電阻，該第六電阻電性連接至該第四電晶體及該第二二極體。The auxiliary winding detection determining unit of the automatic switching device of claim 5, wherein the auxiliary winding detection determining unit further comprises: a fourth transistor electrically connected to the second resistor and the a third capacitor, the fifth capacitor is electrically connected to the fourth transistor; a fifth resistor, the fifth resistor is electrically connected to the fourth transistor; and a sixth resistor, The sixth resistor is electrically connected to the fourth transistor and the second diode. 如申請專利範圍第6項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第三二極體，該第三二極體電性連接至該第二電晶體及該輔助繞組電壓輸出端； 一第六電容，該第六電容電性連接至該第二電晶體及該第三二極體；及 一第四二極體，該第四二極體電性連接至該第三二極體及該輔助繞組電壓輸出端。The auxiliary winding detection determining unit further includes: a third diode, the third diode is electrically connected to the second electricity, as described in claim 6 a crystal and the auxiliary winding voltage output end; a sixth capacitor electrically connected to the second transistor and the third diode; and a fourth diode, the fourth diode Sexually connected to the third diode and the auxiliary winding voltage output. 如申請專利範圍第7項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第五電晶體，該第五電晶體電性連接至該第二二極體及該第四二極體； 一第七電阻，該第七電阻電性連接至該第二二極體及該第五電晶體；及 一第二齊納二極體，該第二齊納二極體電性連接至該第五電晶體及該第七電阻。The auxiliary winding detection determining unit of claim 7, wherein the auxiliary winding detection determining unit further comprises: a fifth transistor electrically connected to the second diode And the fourth diode; a seventh resistor electrically connected to the second diode and the fifth transistor; and a second Zener diode, the second Zener The pole body is electrically connected to the fifth transistor and the seventh resistor. 如申請專利範圍第3項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第三二極體，該第三二極體電性連接至該第一電晶體及該輔助繞組電壓輸出端； 一第四二極體，該第四二極體電性連接至該第三二極體、該輔助繞組電壓輸出端及該第二二極體；及 一第二電阻，該第二電阻電性連接至該第一電晶體、該第一電阻及該第一齊納二極體。The auxiliary winding detection determining unit further includes: a third diode, the third diode is electrically connected to the first electricity, as claimed in claim 3, a crystal and the auxiliary winding voltage output end; a fourth diode, the fourth diode is electrically connected to the third diode, the auxiliary winding voltage output end and the second diode; and a first And a second resistor electrically connected to the first transistor, the first resistor and the first Zener diode. 如申請專利範圍第9項所述之自動切換之輔助繞組供電裝置，其中該輔助繞組偵測判定單元更包含： 一第二齊納二極體，該第二齊納二極體電性連接至該第二二極體及該第四二極體； 一第三電阻，該第三電阻電性連接至該第二齊納二極體； 一第四電阻，該第四電阻電性連接至該第三電阻及該第二齊納二極體；及 一第二電晶體，該第二電晶體電性連接至該第二電阻及該第四電阻。The auxiliary winding detection determining unit of the automatic switching device of claim 9, wherein the auxiliary winding detection determining unit further comprises: a second Zener diode electrically connected to the second Zener diode The second diode and the fourth diode; a third resistor electrically connected to the second Zener diode; a fourth resistor electrically connected to the fourth resistor a third resistor and the second Zener diode; and a second transistor electrically connected to the second resistor and the fourth resistor.
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