TWM567896U - Power distribution circuit - Google Patents
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Abstract
本新型係提出應用於電源供應裝置之中的一種電源分配電路。於本新型中，一第一電源分配單元係電性連接至一待機電源變壓器，且一第二電源分配單元係同時電性連接至一主電源變壓器、一輔助電源變壓器與該待機電源變壓器的二次側。如此設計，當主電源變壓器輸出一主電源(+12V)且該輔助電源變壓器輸出一輔助電源(+5V或+3.3V)之時，電源管理器即輸出一電源正常輸出訊號以促使該第一電源分配單元停止該待機電源被輸出至與該電源供應裝置電性連接的電腦主機內的主機板；同時，該第二電源分配單元將該輔助電源輸出至電性連接於該待機電源變壓器的二次側與一次側之間的一回授控制單元，促使該回授控制單停止該待機電源變壓器之運轉。The present invention proposes a power distribution circuit for use in a power supply device. In the present invention, a first power distribution unit is electrically connected to a standby power transformer, and a second power distribution unit is electrically connected to a main power transformer, an auxiliary power transformer, and the standby power transformer. Secondary side. So designed, when the main power transformer outputs a main power supply (+12V) and the auxiliary power supply transformer outputs an auxiliary power supply (+5V or +3.3V), the power manager outputs a power supply normal output signal to promote the first The power distribution unit stops the standby power supply from being output to the motherboard in the computer host electrically connected to the power supply device; meanwhile, the second power distribution unit outputs the auxiliary power supply to the second electrical connection to the standby power transformer A feedback control unit between the secondary side and the primary side causes the feedback control unit to stop the operation of the standby power transformer.
Description
本新型係關於電源裝置的相關技術領域，尤指應用於電源供應器之中的一種電源分配電路。The present invention relates to the related technical field of a power supply device, and more particularly to a power distribution circuit applied to a power supply.
目前，電腦或伺服器系統的電源供應裝置都具有可自動切換主電源/待機電源之功能。在電源供應裝置僅提供待機電源的情況下，電腦的週邊設備皆不會接收到任何驅動電源，只有主機板上的CPU與DRAM依然處於運行狀態，藉此方式達到有效節省電腦或伺服器系統的電能消耗。At present, the power supply device of the computer or the server system has the function of automatically switching the main power/standby power. In the case that the power supply device only provides standby power, the peripheral devices of the computer will not receive any driving power, and only the CPU and DRAM on the motherboard are still in operation, thereby effectively saving the computer or the server system. Power consumption.
圖1顯示習知的一種電源供應裝置的簡化版電路架構圖。如圖1所示，電源供應裝置1’的電路架構係至少包括：一電磁干擾濾波單元(EMI filter)10’、一全橋整流單元11’、一PFC單元12’、一主電源變壓器13’、一第一功率開關14’、一回授電路單元15’、一控制器16’、一待機電源變壓器13a’、一第二功率開關14a’、以及一回授控制單元15a’。其中，市電AC’經由全橋整流單元11’轉換成直流電之後，該直流電係於正常供電模式之下由所述主電源變壓器13’轉換成一主電源Vmain’；接著，所述主電源Vmain’被送至電腦的主機板，進以提供CPU、DRAM、硬碟、風扇、連接至電腦主機的複數週邊裝置等裝置所需電源。並且，必須補充說明的是，主電源變壓器13’的二次側係設置有輸出整流單元OR’與輸出濾波單元OF’。 另一方面，在待機模式之下，該直流電係由所述待機電源變壓器13a’轉換成一待機電源VSB’；接著，所述待機電源VSB’被送至電腦的主機板，進以提供CPU與DRAM依然處於運行狀態的所需電源。並且，必須補充說明的是，待機電源變壓器13a’的二次側同樣也是設置有輸出整流單元OR’與輸出濾波單元OF’。1 shows a simplified circuit architecture diagram of a conventional power supply device. As shown in FIG. 1, the circuit structure of the power supply device 1' includes at least: an EMI filter 10', a full bridge rectifier unit 11', a PFC unit 12', and a main power transformer 13'. A first power switch 14', a feedback circuit unit 15', a controller 16', a standby power transformer 13a', a second power switch 14a', and a feedback control unit 15a'. Wherein, after the mains AC' is converted into direct current via the full-bridge rectifying unit 11', the direct current is converted into a main power source Vmain' by the main power transformer 13' under the normal power supply mode; then, the main power source Vmain' is The motherboard that is sent to the computer is supplied with power required by the CPU, DRAM, hard disk, fan, and multiple peripheral devices connected to the host computer. Further, it must be additionally noted that the secondary side of the main power transformer 13' is provided with an output rectifying unit OR' and an output filtering unit OF'. On the other hand, in the standby mode, the DC power system is converted into a standby power supply VSB' by the standby power transformer 13a'; then, the standby power supply VSB' is sent to the motherboard of the computer to provide the CPU and the DRAM. The required power supply is still running. Further, it must be additionally noted that the secondary side of the standby power transformer 13a' is also provided with an output rectifying unit OR' and an output filtering unit OF'.
值得特別說明的是，在使用者按壓電腦主機上的啟動鍵之後，控制器16’便會收到一致能訊號(enable signal)En’；之後，電源供應裝置1’所輸出的主電源Vmain’的電位開始上升。進一步地，在主電源Vmain’的電位穩定之後，電腦的主機板會收到一個稱為power good的訊號(PG signal)，令耗電的裝置(例如CPU與硬碟機)開始由主電源Vmain’進行供電。值得注意的是，待機電源VSB’在電腦完成正常開機程序之依然持續地供應給電源給電腦端的電源管理控制器，甚至也供電給風扇。 如此一來，因受到待機電源變壓器13a’、第二功率開關14a’與回授控制單元15a’持續工作之影響，電源供應裝置1’之整體的電源轉換效率就會變低。嚴重者，有可能導致電源供應裝置1’ 的電源轉換效率低於美國環境協會(EPA)所規定的80%。It is worth noting that after the user presses the start button on the host computer, the controller 16' receives an enable signal En'; after that, the main power source Vmain' output by the power supply device 1' The potential begins to rise. Further, after the potential of the main power source Vmain' is stabilized, the motherboard of the computer receives a signal called power good (PG signal), so that the power-consuming devices (such as the CPU and the hard disk drive) start from the main power supply Vmain. 'Power supply. It is worth noting that the standby power supply VSB' is continuously supplied to the power management controller of the computer at the completion of the normal booting process of the computer, and even supplies power to the fan. As a result, the power conversion efficiency of the entire power supply device 1' becomes low due to the continuous operation of the standby power transformer 13a', the second power switch 14a', and the feedback control unit 15a'. In severe cases, it is possible that the power supply conversion efficiency of the power supply device 1' is lower than 80% as stipulated by the Environmental Protection Agency (EPA).
因此，吾人可透過上述說明得知，對於電源供應裝置1’的製造商而言，如何根據電腦主機的開機狀況以及電腦週邊裝置的使用情況有效地配置主電源Vmain’與待機電源VSB’之輸出已經成為目前亟需解決的重大問題。有鑑於此，本案之創作人係極力加以研究新型，而終於研發完成本新型之應用於電源供應器之中的一種電源分配電路。Therefore, as can be seen from the above description, the manufacturer of the power supply device 1' can effectively configure the output of the main power source Vmain' and the standby power source VSB' according to the startup state of the computer main body and the usage of the computer peripheral device. It has become a major problem that needs to be solved urgently. In view of this, the creators of this case tried to study the new type, and finally developed a power distribution circuit for the power supply in the present invention.
根據前述說明，吾人係已得知習知的電源供應裝置在電腦完成正常開機程序還是會持續供應待機電源，導致電源供應裝置的節能效果不彰；除此之外，也同時造成電源供應裝置的電源轉換效率低於美國環境協會(EPA)所規定的80%。有鑑於此，本新型創作之主要目的在於提出應用於電源供應裝置之中的一種電源分配電路，其係於電路組成上主要包括：一第一電源分配單元與一第二電源分配單元。於本新型中，第一電源分配單元係電性連接至待機電源變壓器的二次側，並根據一電源正常輸出訊號(PG)而作動。另一方面，第二電源分配單元係同時電性連接至主電源變壓器的二次側、輔助電源變壓器的二次側與該待機電源變壓器的二次側，並根據該電源正常輸出訊號(PG)而作動。如此設計，當主電源變壓器輸出一主電源(+12V)且該輔助電源變壓器輸出一輔助電源(+5V或+3.3V)之時，電源管理器即提供電源正常輸出訊號至第一電源分配單元與第二電源分配單元，促使該第一電源分配單元停止該待機電源被輸出至與該電源供應裝置電性連接的一後端電路(亦即，電腦主機內的主機板)；同時，該第二電源分配單元將該第二電源輸出至電性連接於該待機電源變壓器的二次側與一次側之間的一回授控制單元，促使該回授控制單元停止該待機電源變壓器之運轉。According to the foregoing description, it has been known that the conventional power supply device continues to supply standby power when the computer completes the normal booting process, resulting in a power saving effect of the power supply device; in addition, the power supply device is also caused at the same time. Power conversion efficiency is less than 80% as specified by the Environmental Protection Agency (EPA). In view of this, the main purpose of the present invention is to provide a power distribution circuit for use in a power supply device, which is mainly composed of a first power distribution unit and a second power distribution unit. In the present invention, the first power distribution unit is electrically connected to the secondary side of the standby power transformer, and is activated according to a power normal output signal (PG). On the other hand, the second power distribution unit is electrically connected to the secondary side of the main power transformer, the secondary side of the auxiliary power transformer and the secondary side of the standby power transformer, and outputs a signal (PG) according to the power supply. And act. So designed, when the main power transformer outputs a main power supply (+12V) and the auxiliary power supply transformer outputs an auxiliary power supply (+5V or +3.3V), the power manager provides a power normal output signal to the first power distribution unit. And the second power distribution unit, causing the first power distribution unit to stop the standby power source from being output to a back end circuit (ie, a motherboard in the computer host) electrically connected to the power supply device; The second power distribution unit outputs the second power source to a feedback control unit electrically connected between the secondary side and the primary side of the standby power transformer, thereby causing the feedback control unit to stop the operation of the standby power transformer.
承上述說明，簡單地說，在偵測到主電源與輔助電源穩定輸出之後，本新型之電源分配電路便會有效地停止待機電源之輸出，藉此方式提升電源供應裝置的節能功效，並同時提升其電源轉換效率。According to the above description, simply speaking, after detecting the stable output of the main power source and the auxiliary power source, the power distribution circuit of the present invention effectively stops the output of the standby power source, thereby improving the energy saving effect of the power supply device, and simultaneously Improve its power conversion efficiency.
為了達成上述本新型之主要目的，本案創作人係提供所述電源分配電路的一實施例，係應用於一電源供應裝置之中；其中，該電源供應裝置至少包括一第一電源變壓器、一電源轉換單元、與一待機電源變壓器；並且，該電源分配電路係包括： 一第一電源分配單元，係電性連接至該待機電源變壓器的二次側，並耦接一電源正常輸出訊號(Power good, PG)；以及 一第二電源分配單元，係同時電性連接至該第一電源變壓器的二次側、該電源轉換單元的輸出端與該待機電源變壓器的二次側，並耦接該電源正常輸出訊號(PG)； 其中，當該待機電源變壓器透過其二次側輸出一待機電源時，該電源正常輸出訊號(PG)被停止提供至該第一電源分配單元與該第二電源分配單元； 其中，當該第一電源變壓器透過其二次側輸出一第一電源(+12V)且該電源轉換單元透過其輸出端輸出一第二電源(+5V)之時，該電源正常輸出訊號(PG)被提供至該第一電源分配單元與該第二電源分配單元，促使該第一電源分配單元停止該待機電源繼續被被輸出至與該電源供應裝置電性連接的一後端電路；同時，該第二電源分配單元將該第二電源輸出至電性連接於該待機電源變壓器的二次側與一次側之間的一回授控制單元，促使該回授控制單元停止該待機電源變壓器之運轉。In order to achieve the above-mentioned main purpose of the present invention, the creator of the present invention provides an embodiment of the power distribution circuit, which is applied to a power supply device; wherein the power supply device includes at least a first power transformer and a power source. a conversion unit and a standby power transformer; and the power distribution circuit includes: a first power distribution unit electrically connected to the secondary side of the standby power transformer and coupled to a power normal output signal (Power good And a second power distribution unit electrically connected to the secondary side of the first power transformer, the output end of the power conversion unit, and the secondary side of the standby power transformer, and coupled to the power supply a normal output signal (PG); wherein, when the standby power transformer outputs a standby power through the secondary side, the power normal output signal (PG) is stopped from being supplied to the first power distribution unit and the second power distribution unit Wherein the first power transformer outputs a first power source (+12V) through its secondary side and the power conversion unit transmits through When the output terminal outputs a second power source (+5V), the power source normal output signal (PG) is supplied to the first power distribution unit and the second power distribution unit, causing the first power distribution unit to stop the standby power source. And continuing to be outputted to a back-end circuit electrically connected to the power supply device; at the same time, the second power distribution unit outputs the second power supply to the secondary side and the primary side electrically connected to the standby power transformer A feedback control unit between the two causes the feedback control unit to stop the operation of the standby power transformer.
為了能夠更清楚地描述本新型所提出之一種電源分配電路，以下將配合圖式，詳盡說明本新型之較佳實施例。In order to more clearly describe a power distribution circuit proposed by the present invention, a preferred embodiment of the present invention will be described in detail below with reference to the drawings.
請參閱圖2A與圖2B，係顯示本新型之一種電源分配電路的電路架構圖。必須特別說明的是，本新型之電源分配電路1係應用於一電源供應裝置之中，並主要包括一第一電源分配單元11與一第二電源分配單元12。如圖2A所示，所述電源供應裝置至少包含一第一電源變壓器23、一電源轉換單元(作為第二電源變壓器23b)、與一待機電源變壓器23a。一般而言，電源變壓器的二次側至少會設置有輸出整流單元與輸出濾波單元。因此，圖2A係示意性地顯示該第一電源變壓器23的二次側設置有輸出整流單元OR與輸出濾波單元OF、該第二電源變壓器23b的二次側係設置有輸出整流單元ORb與輸出濾波單元OFb、且該待機電源變壓器23a的二次側設置有輸出整流單元ORa與輸出濾波單元OFa。2A and 2B are circuit diagrams showing a power distribution circuit of the present invention. It should be particularly noted that the power distribution circuit 1 of the present invention is applied to a power supply device and mainly includes a first power distribution unit 11 and a second power distribution unit 12. As shown in FIG. 2A, the power supply device includes at least a first power transformer 23, a power conversion unit (as a second power transformer 23b), and a standby power transformer 23a. Generally, the secondary side of the power transformer is provided with at least an output rectifying unit and an output filtering unit. Therefore, FIG. 2A schematically shows that the secondary side of the first power transformer 23 is provided with an output rectifying unit OR and an output filtering unit OF, and the secondary side of the second power transformer 23b is provided with an output rectifying unit ORb and an output. The filtering unit OFb and the secondary side of the standby power transformer 23a are provided with an output rectifying unit ORa and an output filtering unit OFa.
比較圖2A與圖2B可以發現，圖2B中係以一降壓轉換器23c作為所述電源轉換單元，且該降壓轉換器23c的輸出端係設置有輸出濾波單元OFc。根據本新型之設計，第一電源分配單元11係電性連接至該待機電源變壓器23a的二次側，並耦接一電源正常輸出訊號(Power good, PG)。另一方面，該第二電源分配單元12則同時電性連接至該第一電源變壓器23的二次側、該電源轉換單元(即，第二電源變壓器23b或降壓轉換器23c)的輸出側與該待機電源變壓器23a的二次側，並耦接該電源正常輸出訊號 PG。於此，必須補充說明的是，所述電源正常輸出訊號PG通常提供自一電源管理器。更進一步地說明，在使用者按壓電腦主機上的啟動鍵之後，電源管理器便會收到一致能訊號(enable signal)，進而透過控制功率開關元件24a的方式令第一電源變壓器23與電源轉換單元(即，第二電源變壓器23b或降壓轉換器23c)開始輸出一第一電源+12V與一第二電源+5V。並且，當第一電源+12V與第二電源+5V的輸出趨向穩定之後，電源管理器便會輸出所謂的電源正常輸出訊號PG以通知電腦主機內的主機板。2A and 2B, it can be found that a buck converter 23c is used as the power conversion unit in FIG. 2B, and an output of the buck converter 23c is provided with an output filtering unit OFc. According to the design of the present invention, the first power distribution unit 11 is electrically connected to the secondary side of the standby power transformer 23a and coupled to a power good output signal (PG). On the other hand, the second power distribution unit 12 is electrically connected to the secondary side of the first power transformer 23, and the output side of the power conversion unit (ie, the second power transformer 23b or the buck converter 23c). The secondary side of the standby power transformer 23a is coupled to the power normal output signal PG. Here, it must be additionally noted that the power good output signal PG is usually provided from a power manager. Further, after the user presses the start button on the host computer, the power manager receives an enable signal, and then converts the first power transformer 23 and the power by controlling the power switch element 24a. The unit (ie, the second power transformer 23b or the buck converter 23c) begins to output a first power supply +12V and a second power supply +5V. Moreover, after the output of the first power supply +12V and the second power supply +5V tend to stabilize, the power manager outputs a so-called power good output signal PG to notify the motherboard in the computer host.
將本新型之電源分配電路1應用至包括第一電源變壓器23、電源轉換單元(即，第二電源變壓器23b或降壓轉換器23c)與待機電源變壓器23a的電源供應裝置2之後，當該第一電源變壓器23透過其二次側輸出第一電源+12V且該電源轉換單元(即，第二電源變壓器23b或降壓轉換器23c)透過其輸出側輸出一第二電源+5V之時，電源管理器即提供所述電源正常輸出訊號PG至該第一電源分配單元11與該第二電源分配單元12，促使該第一電源分配單元11停止該待機電源VSB輸出至與該電源供應裝置電性連接的一後端電路(亦即，電腦主機內的主機板)；同時，該第二電源分配單元12將該第二電源+5V輸出至電性連接於該待機電源變壓器23a的二次側與一次側之間的一回授控制單元25a，促使該回授控制單元25a停止該待機電源變壓器23a之運轉。相反地，當電源管理器偵測該電源供應裝置的負載端(亦即，主機板及/或透過主機板獲取驅動電源的風扇與週邊電子裝置)停止功率消耗之時，電源管理器即停止提供所述電源正常輸出訊號PG至該第一電源分配單元11與該第二電源分配單元12。此時，由待機電源變壓器23a的二次側所輸出的該待機電源VSB便會被輸出至主機板，以維持主機板上的CPU與DRAM處於運行狀態；同時，該待機電源VSB也會被輸出至電性連接於該待機電源變壓器23a的二次側與一次側之間的回授控制單元25a，以利用該回授控制單元25a控制連接於該待機電源變壓器23a的一次側的功率開關元件24a，藉以維持該待機電源VSB的穩定輸出。After applying the power distribution circuit 1 of the present invention to the power supply device 2 including the first power transformer 23, the power conversion unit (ie, the second power transformer 23b or the buck converter 23c) and the standby power transformer 23a, when the When a power transformer 23 outputs a first power supply +12V through its secondary side and the power conversion unit (ie, the second power transformer 23b or the buck converter 23c) outputs a second power supply +5V through its output side, the power supply The manager provides the power normal output signal PG to the first power distribution unit 11 and the second power distribution unit 12, causing the first power distribution unit 11 to stop outputting the standby power supply VSB to the power supply device. a back-end circuit (ie, a motherboard in the computer mainframe) connected; at the same time, the second power distribution unit 12 outputs the second power supply +5V to the secondary side electrically connected to the standby power transformer 23a A feedback control unit 25a between the primary sides causes the feedback control unit 25a to stop the operation of the standby power transformer 23a. Conversely, when the power manager detects the load end of the power supply device (that is, the motherboard and/or the fan that drives the power through the motherboard and the peripheral electronics) stops power consumption, the power manager stops providing. The power supply normally outputs a signal PG to the first power distribution unit 11 and the second power distribution unit 12. At this time, the standby power supply VSB outputted from the secondary side of the standby power transformer 23a is output to the motherboard to maintain the CPU and DRAM on the motherboard, and the standby power supply VSB is also output. a feedback control unit 25a electrically connected between the secondary side and the primary side of the standby power transformer 23a to control the power switching element 24a connected to the primary side of the standby power transformer 23a by the feedback control unit 25a In order to maintain the stable output of the standby power supply VSB.
繼續地參閱圖2A與圖2B，並請同時參閱圖3A與圖3B，係顯示第一電源分配單元與第二電源分配單元的內部電路架構圖。本新型主要是將第一電源分配單元11與第二電源分配單元12皆設計成一閾值開關電路。其中，第一電源分配單元11主要是以待機電源VSB作為其電路的供電電壓(即V CC)，並以電源正常輸出訊號 PG作為電路的輸入訊號。根據本新型之設計，第一電源分配單元11主要包括一第一雙極性接面電晶體(Bipolar junction transistor, BJT)Q28與一第二雙極性接面電晶體Q30。就第一雙極性接面電晶體Q28而言，其集極係耦接至該待機電源變壓器23a的二次側，其射極接地，且其基極係耦接至該待機電源變壓器23a的二次側。另一方面，就第二雙極性接面電晶體Q30而言，其集極係耦接至該待機電源變壓器23a的二次側，其射極接地，且其基極係耦接至該電源正常輸出訊號PG。 Continuing to refer to FIG. 2A and FIG. 2B, and referring to FIG. 3A and FIG. 3B simultaneously, an internal circuit architecture diagram of the first power distribution unit and the second power distribution unit is shown. The present invention mainly designs the first power distribution unit 11 and the second power distribution unit 12 as a threshold switching circuit. The first power distribution unit 11 mainly uses the standby power supply VSB as the power supply voltage (ie, V CC ) of the circuit, and uses the power normal output signal PG as the input signal of the circuit. According to the design of the present invention, the first power distribution unit 11 mainly includes a first bipolar junction transistor (BJT) Q28 and a second bipolar junction transistor Q30. In the first bipolar junction transistor Q28, the collector is coupled to the secondary side of the standby power transformer 23a, the emitter is grounded, and the base is coupled to the standby power transformer 23a. Secondary side. On the other hand, in the case of the second bipolar junction transistor Q30, the collector is coupled to the secondary side of the standby power transformer 23a, the emitter is grounded, and the base is coupled to the power supply. Output signal PG.
值得注意的是，該第二雙極性接面電晶體Q30的集極更同時電性連接至該第一雙極性接面電晶體Q28的基極。應用此第一電源分配單元11之時，當該電源正常輸出訊號PG被停止提供至該第一電源分配單元11與該第二電源分配單元12之後，該第二雙極性接面電晶體Q30係操作於截止區(Cutoff region)且第一雙極性接面電晶體Q28係操作於飽和區(Saturation region)；此時，該電源轉換單元(即，第二電源變壓器23b或降壓轉換器23c)所輸出的第二電源+5V會透過第二電源分配單元12被傳送至該回授控制單元25a，接著該回授控制單元25a即透過控制連接於該待機電源變壓器23a的一次側的功率開關元件24a之方式，藉以停止該待機電源變壓器23a的運轉。It should be noted that the collector of the second bipolar junction transistor Q30 is more electrically connected to the base of the first bipolar junction transistor Q28. When the first power distribution unit 11 is applied, after the power normal output signal PG is stopped and supplied to the first power distribution unit 11 and the second power distribution unit 12, the second bipolar junction transistor Q30 is Operating in a cutoff region (Cutoff region) and operating the first bipolar junction transistor Q28 in a saturation region; at this time, the power conversion unit (ie, the second power transformer 23b or the buck converter 23c) The output second power +5V is transmitted to the feedback control unit 25a through the second power distribution unit 12, and then the feedback control unit 25a controls the power switching element connected to the primary side of the standby power transformer 23a. In the manner of 24a, the operation of the standby power transformer 23a is stopped.
並且，第一電源分配單元11的電路架構更包括：一單向導通單元112、一第一基極電阻R56、與一第二基極電阻R135。其中，單向導通單元112則由二極體D38、電阻R55與電容C99所組成。於第一電源分配單元11的電路架構之中，該單向導通單元112係連接於該電源正常輸出訊號PG與該回授控制單元25a之間，並同時連接於該電源正常輸出訊號PG與該第一雙極性接面電晶體Q28的集極之間。再者，第一基極電阻R56係連接於該第一雙極性接面電晶體Q28的基極與該待機電源變壓器23a的二次側之間，且第二基極電阻R135係連接於該第二雙極性接面電晶體Q30的基極與該電源正常輸出訊號PG之間。Moreover, the circuit structure of the first power distribution unit 11 further includes: a single conduction unit 112, a first base resistor R56, and a second base resistor R135. The one-way conduction unit 112 is composed of a diode D38, a resistor R55 and a capacitor C99. In the circuit structure of the first power distribution unit 11, the one-way communication unit 112 is connected between the power normal output signal PG and the feedback control unit 25a, and is simultaneously connected to the power normal output signal PG and the Between the collectors of the first bipolar junction transistor Q28. Furthermore, the first base resistor R56 is connected between the base of the first bipolar junction transistor Q28 and the secondary side of the standby power transformer 23a, and the second base resistor R135 is connected to the first The base of the two dual polarity junction transistor Q30 is between the base of the power supply normal output signal PG.
請再重複參閱圖2A、圖2B、圖3A、與圖3B。根據本新型之設計，第二電源分配單元12主要是以第一電源+12V作為其電路的供電電壓(即V CC)，並以電源正常輸出訊號 PG作為電路的輸入訊號。根據本新型之設計，第二電源分配單元12主要包括一第三雙極性接面電晶體(Bipolar junction transistor, BJT)Q28A與一第四雙極性接面電晶體Q29。就第三雙極性接面電晶體Q28A而言，其集極係耦接至該第一電源變壓器23的二次側，其射極接地，且其基極係耦接至該第一電源變壓器23的二次側。另一方面，就第四雙極性接面電晶體Q29而言，其集極係耦接至該第一電源變壓器23的二次側，其射極接地，且其基極係耦接至該電源正常輸出訊號PG。 Please refer to FIG. 2A, FIG. 2B, FIG. 3A, and FIG. 3B again. According to the design of the present invention, the second power distribution unit 12 mainly uses the first power supply +12V as the power supply voltage of the circuit (ie, V CC ), and uses the power normal output signal PG as the input signal of the circuit. According to the design of the present invention, the second power distribution unit 12 mainly includes a third bipolar junction transistor (BJT) Q28A and a fourth bipolar junction transistor Q29. For the third bipolar junction transistor Q28A, the collector is coupled to the secondary side of the first power transformer 23, the emitter is grounded, and the base is coupled to the first power transformer 23 The secondary side. On the other hand, in the case of the fourth bipolar junction transistor Q29, the collector is coupled to the secondary side of the first power transformer 23, the emitter is grounded, and the base is coupled to the power supply. Normal output signal PG.
值得注意的是，該第四雙極性接面電晶體Q29的集極更同時電性連接至該第三雙極性接面電晶體Q28A的基極。並且，第二電源分配單元12的電路架構更包括：一整流單元121、一第三基極電阻R70、一第四基極電阻R68、一第五基極電阻R69、一饋入電阻R30、一第一集極電阻R50、一第二集極電阻R704、以及一金氧半場效電晶體(Metal-oxide-semiconductor field-effect transistor, MOSFET)Q9。其中，該整流單元121係由二極體D20與電容C29所組成，用以連接於該第一電源變壓器23的二次側與該第二電源分配單元12之間。另一方面，該第三基極電阻R70的一端連接至該第三雙極性接面電晶體Q28A的基極與該第四雙極性接面電晶體Q29的集極，且其另一端則接地。此外，第四基極電阻R68係連接於該第四雙極性接面電晶體Q29的基極與該電源正常輸出訊號PG之間。再者，第五基極電阻R69的一端係連接於該第四雙極性接面電晶體Q29的基極，且其另一端係接地。It should be noted that the collector of the fourth bipolar junction transistor Q29 is more electrically connected to the base of the third bipolar junction transistor Q28A. Moreover, the circuit structure of the second power distribution unit 12 further includes: a rectifying unit 121, a third base resistor R70, a fourth base resistor R68, a fifth base resistor R69, a feed resistor R30, and a The first collector resistor R50, a second collector resistor R704, and a metal-oxide-semiconductor field-effect transistor (MOSFET) Q9. The rectifying unit 121 is composed of a diode D20 and a capacitor C29 for connecting between the secondary side of the first power transformer 23 and the second power distribution unit 12. On the other hand, one end of the third base resistor R70 is connected to the base of the third bipolar junction transistor Q28A and the collector of the fourth bipolar junction transistor Q29, and the other end thereof is grounded. In addition, the fourth base resistor R68 is connected between the base of the fourth bipolar junction transistor Q29 and the power normal output signal PG. Furthermore, one end of the fifth base resistor R69 is connected to the base of the fourth bipolar junction transistor Q29, and the other end thereof is grounded.
承上述說明，該饋入電阻R30的兩端係分別連接該第三雙極性接面電晶體Q28A的集極與該第四雙極性接面電晶體Q29的集極；並且，該饋入電阻R30的一端同時電連接至該第一電源變壓器23的二次側。另一方面，該第一集極電阻R50係設置於該饋入電阻R30與該第三雙極性接面電晶體Q28A的集極之間，且該第二集極電阻R704，係設置於該饋入電阻R30與該第四雙極性接面電晶體Q29的集極之間。值得說明的是，本新型特別地將金氧半場效電晶體Q9設置於待機電源變壓器23a的二次側、電源轉換單元(即，第一電源變壓器23b或降壓轉換器23c)的輸出側、以及第一電源變壓器23的二次側之間。其中，金氧半場效電晶體Q9係以其閘極透過該饋入電阻R30耦接至該第一電源變壓器23的二次側。並且，金氧半場效電晶體Q9的源極係電性連接至該電源轉換單元(即，第二電源變壓器23b或降壓轉換器23c)的輸出側，且其汲極係電性連接至該待機電源變壓器23a的二次側。According to the above description, the two ends of the feeding resistor R30 are respectively connected to the collector of the third bipolar junction transistor Q28A and the collector of the fourth bipolar junction transistor Q29; and the feeding resistor R30 One end is simultaneously electrically connected to the secondary side of the first power transformer 23. On the other hand, the first collector resistor R50 is disposed between the feed resistor R30 and the collector of the third bipolar junction transistor Q28A, and the second collector resistor R704 is disposed on the feed. The input resistor R30 is between the collector of the fourth bipolar junction transistor Q29. It should be noted that the present invention specifically places the MOS field-effect transistor Q9 on the output side of the secondary side of the standby power transformer 23a, the power conversion unit (ie, the first power transformer 23b or the buck converter 23c), And between the secondary sides of the first power transformer 23. The MOS field-effect transistor Q9 is coupled to the secondary side of the first power transformer 23 via its feed resistor R30. Moreover, the source of the MOS field Q9 is electrically connected to the output side of the power conversion unit (ie, the second power transformer 23b or the buck converter 23c), and the drain is electrically connected to the The secondary side of the standby power transformer 23a.
應用此第二電源分配單元12之時，當該電源正常輸出訊號PG被停止提供至該第一電源分配單元11與該第二電源分配單元12之時，該第三雙極性接面電晶體Q28A係操作於截止區(Cutoff region)且第四雙極性接面電晶體Q29係操作於飽和區(Saturation region)；此時，取代原本的待機電源VSB，該電源轉換單元(即，第二電源變壓器23b或降壓轉換器23c)所輸出的第二電源+5V會透過所述金氧半場效電晶體Q9而被輸出至與該電源供應裝置電性連接的後端電路(亦即，電腦主機內的主機板)。除此之外，第二電源分配單元12更進一步包括一電阻R49A與一電容C4；其中，該電阻R49A的一端係透過該第一集極電阻R50而耦接至該第三雙極性接面電晶體Q28A的集極，且其另一端接地。並且，該電容C4的一端係透過該第一集極電阻R50而耦接至該第三雙極性接面電晶體Q28A的集極，且其另一端接地。When the second power distribution unit 12 is applied, when the power normal output signal PG is stopped and supplied to the first power distribution unit 11 and the second power distribution unit 12, the third bipolar junction transistor Q28A The system operates in a cutoff region (Cutoff region) and the fourth bipolar junction transistor Q29 operates in a saturation region (Saturation region); at this time, instead of the original standby power supply VSB, the power conversion unit (ie, the second power transformer) The second power source +5V outputted by the buck converter 23c) is output to the back end circuit electrically connected to the power supply device through the MOS field Q9 (that is, in the computer mainframe) Motherboard). In addition, the second power distribution unit 12 further includes a resistor R49A and a capacitor C4. One end of the resistor R49A is coupled to the third bipolar junction through the first collector resistor R50. The collector of crystal Q28A is grounded at the other end. Moreover, one end of the capacitor C4 is coupled to the collector of the third bipolar junction transistor Q28A through the first collector resistor R50, and the other end thereof is grounded.
如此，上述係已完整且清楚地說明本新型之電源分配電路的結構組成；並且，經由上述可知本新型係具有下列之優點：Thus, the above-mentioned system has completely and clearly explained the structural composition of the power distribution circuit of the present invention; and, as described above, the present invention has the following advantages:
(1)本新型之電源分配電路1係應用於一電源供應裝置之中，並於電路組成上包括：一第一電源分配單元11與一第二電源分配單元12。特別地，該第一電源分配單元11係電性連接至一待機電源變壓器23a的二次側，並根據一電源正常輸出訊號PG而作動。另一方面，該第二電源分配單元12係同時電性連接至一主電源變壓器的二次側、一輔助電源變壓器的二次側與該待機電源變壓器23a的二次側，並根據該電源正常輸出訊號PG而作動。如此設計，當該主電源變壓器透過其二次側輸出一主電源(+12V)且該輔助電源變壓器透過其二次側輸出一輔助電源(+5V或+3.3V)之時，電源管理器即提供電源正常輸出訊號PG至第一電源分配單元11與第二電源分配單元12，促使該第一電源分配單元11停止該待機電源VSB輸出至與該電源供應裝置電性連接的一後端電路；同時，該第二電源分配單元12將該第二電源+5V輸出至電性連接於該待機電源變壓器23a的二次側與一次側之間的回授控制單元25a，促使該回授控制單元25a停止該待機電源變壓器23a之運轉。(1) The power distribution circuit 1 of the present invention is applied to a power supply device, and includes a first power distribution unit 11 and a second power distribution unit 12 in the circuit composition. Specifically, the first power distribution unit 11 is electrically connected to the secondary side of a standby power transformer 23a, and is activated according to a power supply normal output signal PG. On the other hand, the second power distribution unit 12 is electrically connected to the secondary side of a main power transformer, the secondary side of an auxiliary power transformer, and the secondary side of the standby power transformer 23a, and is normally operated according to the power supply. The signal PG is output and is activated. So designed, when the main power transformer outputs a main power supply (+12V) through its secondary side and the auxiliary power transformer outputs an auxiliary power supply (+5V or +3.3V) through its secondary side, the power manager is Providing a power normal output signal PG to the first power distribution unit 11 and the second power distribution unit 12, causing the first power distribution unit 11 to stop outputting the standby power supply VSB to a back end circuit electrically connected to the power supply device; At the same time, the second power distribution unit 12 outputs the second power supply +5V to the feedback control unit 25a electrically connected between the secondary side and the primary side of the standby power transformer 23a, and prompts the feedback control unit 25a. The operation of the standby power transformer 23a is stopped.
(2)相反地，當電源管理器偵測該電源供應裝置的負載端(亦即，主機板及/或透過主機板獲取驅動電源的風扇與週邊電子裝置)停止功率消耗之時，電源管理器即停止提供所述電源正常輸出訊號PG至該第一電源分配單元11與該第二電源分配單元12。此時，由待機電源變壓器23a的二次側所輸出的該待機電源VSB便會被輸出至主機板，以維持主機板上的CPU與DRAM處於運行狀態；同時，該待機電源VSB也會被輸出該回授控制單元25a，以利用該回授控制單元25a控制連接於該待機電源變壓器23a的一次側的功率開關元件24a，藉以維持該待機電源VSB的穩定輸出。(2) Conversely, when the power manager detects the load end of the power supply device (that is, the motherboard and/or the fan that receives the driving power through the motherboard and the peripheral electronic device) stops the power consumption, the power manager That is, the supply of the power good output signal PG to the first power distribution unit 11 and the second power distribution unit 12 is stopped. At this time, the standby power supply VSB outputted from the secondary side of the standby power transformer 23a is output to the motherboard to maintain the CPU and DRAM on the motherboard, and the standby power supply VSB is also output. The feedback control unit 25a controls the power switching element 24a connected to the primary side of the standby power transformer 23a by the feedback control unit 25a, thereby maintaining the stable output of the standby power supply VSB.
必須加以強調的是，上述之詳細說明係針對本新型可行實施例之具體說明，惟該實施例並非用以限制本新型之專利範圍，凡未脫離本新型技藝精神所為之等效實施或變更，均應包含於本案之專利範圍中。It is to be understood that the foregoing detailed description of the preferred embodiments of the present invention is not intended to limit the scope of the invention, Both should be included in the scope of the patent in this case.
＜本新型＞<This new type>
1‧‧‧電源分配電路 1‧‧‧Power distribution circuit
11‧‧‧第一電源分配單元 11‧‧‧First power distribution unit
12‧‧‧第二電源分配單元 12‧‧‧Second power distribution unit
23‧‧‧第一電源變壓器 23‧‧‧First power transformer
23b‧‧‧第二電源變壓器 23b‧‧‧Second power transformer
23a‧‧‧待機電源變壓器 23a‧‧‧Standby power transformer
23c‧‧‧降壓轉換器 23c‧‧‧ Buck Converter
25a‧‧‧回授控制單元 25a‧‧‧Responsible control unit
24a‧‧‧功率開關元件 24a‧‧‧Power switching components
OR、ORa、ORb‧‧‧輸出整流單元 OR, ORa, ORb‧‧‧ output rectifier unit
OF、OFa、OFb、OFc‧‧‧輸出濾波單元 OF, OFa, OFb, OFc‧‧‧ output filtering unit
PG‧‧‧電源正常輸出訊號 PG‧‧‧Power normal output signal
+12V‧‧‧第一電源 +12V‧‧‧First power supply
+5V‧‧‧第二電源 +5V‧‧‧second power supply
VSB‧‧‧待機電源 VSB‧‧‧Standby power supply
Q28‧‧‧第一雙極性接面電晶體 Q28‧‧‧First bipolar junction transistor
Q30‧‧‧第二雙極性接面電晶體 Q30‧‧‧Second bipolar junction transistor
112‧‧‧單向導通單元 112‧‧‧One-way unit
R56‧‧‧第一基極電阻 R56‧‧‧First base resistance
R135‧‧‧第二基極電阻 R135‧‧‧Second base resistance
R55、R49A‧‧‧電阻 R55, R49A‧‧‧ resistance
C99、C29、C4‧‧‧電容 C99, C29, C4‧‧‧ capacitors
D38、D20‧‧‧二極體 D38, D20‧‧‧ diode
Q28A‧‧‧第三雙極性接面電晶體 Q28A‧‧‧3rd bipolar junction transistor
Q29‧‧‧第四雙極性接面電晶體 Q29‧‧‧4th bipolar junction transistor
121‧‧‧整流單元 121‧‧‧Rectifier unit
R70‧‧‧第三基極電阻 R70‧‧‧ third base resistance
R68‧‧‧第四基極電阻 R68‧‧‧fourth base resistance
R69‧‧‧第五基極電阻 R69‧‧‧ fifth base resistance
R30‧‧‧饋入電阻 R30‧‧‧Feed resistance
R50‧‧‧第一集極電阻 R50‧‧‧ first collector resistance
R704‧‧‧第二集極電阻 R704‧‧‧Second collector resistance
Q9‧‧‧金氧半場效電晶體 Q9‧‧‧Gold oxygen half field effect transistor
＜習知＞<知知>
1’‧‧‧電源供應裝置 1'‧‧‧Power supply unit
10’‧‧‧電磁干擾濾波單元 10'‧‧‧Electromagnetic interference filtering unit
11’‧‧‧全橋整流單元 11'‧‧‧ Full Bridge Rectifier Unit
12’‧‧‧PFC單元 12’‧‧‧PFC unit
13’‧‧‧主電源變壓器 13’‧‧‧Main power transformer
14’‧‧‧第一功率開關 14’‧‧‧First power switch
15’‧‧‧回授電路單元 15’‧‧‧Responsible circuit unit
16’‧‧‧控制器 16’‧‧‧ Controller
13a’‧‧‧待機電源變壓器 13a’‧‧‧Standby power transformer
14a’‧‧‧第二功率開關 14a’‧‧‧second power switch
15a’‧‧‧回授控制單元 15a’‧‧‧Responsible Control Unit
AC’‧‧‧市電 AC’‧‧‧Power
Vmain’‧‧‧主電源 Vmain’‧‧‧ main power supply
VSB’‧‧‧待機電源 VSB’‧‧‧Standby power supply
En’‧‧‧致能訊號 En’‧‧‧Enable Signal
OR’‧‧‧輸出整流單元 OR’‧‧‧ Output Rectifier Unit
OF’‧‧‧輸出濾波單元 OF’‧‧‧ Output Filter Unit
圖1係習知的一種電源供應裝置的簡化版電路架構圖； 圖2A係顯示本新型之一種電源分配電路的電路架構圖； 圖2B係顯示本新型之一種電源分配電路的電路架構圖； 圖3A係顯本第一電源分配單元與第二電源分配單元的內部電路架構圖；以及 圖3B係顯本第一電源分配單元與第二電源分配單元的內部電路架構圖。1 is a simplified circuit diagram of a power supply device; FIG. 2A is a circuit diagram showing a power distribution circuit of the present invention; FIG. 2B is a circuit diagram showing a power distribution circuit of the present invention; 3A shows an internal circuit architecture diagram of the first power distribution unit and the second power distribution unit; and FIG. 3B shows an internal circuit architecture of the first power distribution unit and the second power distribution unit.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107208424U TWM567896U (en) | 2018-06-22 | 2018-06-22 | Power distribution circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107208424U TWM567896U (en) | 2018-06-22 | 2018-06-22 | Power distribution circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM567896U true TWM567896U (en) | 2018-10-01 |
Family
ID=64870930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW107208424U TWM567896U (en) | 2018-06-22 | 2018-06-22 | Power distribution circuit |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWM567896U (en) |
-
2018
- 2018-06-22 TW TW107208424U patent/TWM567896U/en unknown
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