TWI619011B - Power supply apparatus and power supply method - Google Patents
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Abstract
一種電源供應裝置與電源供應方法。電源供應裝置包括主電源電路、輔助電源電路、開關電路以及控制電路。主電源電路可以在正常供電期間產生主電壓至第一路徑,以供電給第一負載。輔助電源電路可以在待機期間產生輔助電壓至第二路徑,以供電給第二負載。開關電路的第一端與第二端分別耦接第一路徑與第二路徑。在正常供電期間,控制電路導通開關電路,以及控制輔助電源電路停止輸出輔助電壓。在待機期間,控制電路截止開關電路,以及控制輔助電源電路恢復輸出輔助電壓。A power supply device and a power supply method. The power supply device includes a main power supply circuit, an auxiliary power supply circuit, a switching circuit, and a control circuit. The main power circuit can generate a main voltage to the first path during normal power supply to supply power to the first load. The auxiliary power supply circuit can generate an auxiliary voltage to the second path during standby to supply power to the second load. The first end and the second end of the switch circuit are coupled to the first path and the second path, respectively. During normal powering, the control circuit turns on the switching circuit and controls the auxiliary power circuit to stop outputting the auxiliary voltage. During standby, the control circuit turns off the switching circuit and controls the auxiliary power circuit to resume outputting the auxiliary voltage.
Description
本發明是有關於一種電力裝置,且特別是有關於一種電源供應裝置與電源供應方法。The present invention relates to an electrical device, and more particularly to a power supply device and a power supply method.
一種稱為先進配置與電源介面(Advanced Configuration and Power Interface,以下簡稱ACPI)的電源管理標準已被廣泛用來管理電子裝置的電源。基於ACPI標準的電源管理機制,電子裝置的狀態被分成不同消耗功率的六個狀態(S0~S5)。施行ACPI標準的電子裝置,其電源供應裝置具有主電源電路(main power supply circuit,用以供應電壓+12V、電壓+5V、電壓+3.3V、電壓-12V、電壓-5V等)與輔助電源電路(auxiliary power supply circuit,用以供應待機電壓5Vsb或待機電壓12Vsb)。於ACPI的架構下,當外部交流電源(即,市電)供應電能到此電源供應裝置時,無論在正常運作狀態中或在待機狀態中,此電源供應裝置的習知輔助電源電路都會持續產生並輸出輔助電能(待機電壓)。輔助電能(待機電壓)供應給電子裝置中的需持續運作之部分負載,例如電源管理控制器(power management controller)與/或其他電路(或元件)。A power management standard called Advanced Configuration and Power Interface (ACPI) has been widely used to manage the power of electronic devices. Based on the ACPI standard power management mechanism, the state of the electronic device is divided into six states (S0~S5) of different power consumption. An electronic device that implements the ACPI standard, the power supply device having a main power supply circuit (for supplying a voltage of +12V, a voltage of +5V, a voltage of +3.3V, a voltage of -12V, a voltage of -5V, etc.) and an auxiliary power supply circuit (auxiliary power supply circuit for supplying standby voltage 5Vsb or standby voltage 12Vsb). Under the ACPI architecture, when an external AC power source (ie, utility power) supplies power to the power supply device, the conventional auxiliary power supply circuit of the power supply device continues to be generated regardless of whether it is in a normal operating state or in a standby state. Output auxiliary power (standby voltage). Auxiliary power (standby voltage) is supplied to a portion of the electronic device that is to be continuously operated, such as a power management controller and/or other circuits (or components).
受限於電路規格與拓墣型態的設計,在正常運作狀態中(亦即在正常供電期間中),輔助電源電路的電力轉換效率遠低於主電源電路的電力轉換效率。亦即,在正常運作狀態中(亦即在正常供電期間中),輔助電源電路會消耗過多的無效功率。Limited by the design of the circuit specification and the topology, in the normal operating state (that is, during the normal power supply period), the power conversion efficiency of the auxiliary power circuit is much lower than the power conversion efficiency of the main power circuit. That is, in normal operating conditions (ie, during normal powering), the auxiliary power circuit consumes too much reactive power.
本發明提供一種電源供應裝置與電源供應方法,以在正常供電期間使輔助電源電路停止輸出輔助電壓。The present invention provides a power supply device and a power supply method to stop an auxiliary power supply circuit from outputting an auxiliary voltage during normal power supply.
本發明的實施例提供一種電源供應裝置,包括主電源電路、輔助電源電路、開關電路以及控制電路。主電源電路可以在正常供電期間產生主電壓至第一路徑,以供電給第一負載。其中,該正常供電期間是由電源供應裝置外部的電源啟動信號所定義。輔助電源電路可以在待機期間產生輔助電壓至第二路徑,以供電給第二負載。開關電路的第一端與第二端分別耦接第一路徑與第二路徑。控制電路耦接開關電路的控制端。控制電路可以在正常供電期間導通開關電路,以使主電源電路的主電壓供電給第一負載與第二負載,控制電路可以在該正常供電期間控制輔助電源電路停止輸出輔助電壓。控制電路可以在待機期間截止開關電路。控制電路可以在待機期間控制輔助電源電路恢復輸出輔助電壓,以供電給第二負載。Embodiments of the present invention provide a power supply device including a main power supply circuit, an auxiliary power supply circuit, a switching circuit, and a control circuit. The main power circuit can generate a main voltage to the first path during normal power supply to supply power to the first load. Wherein, the normal power supply period is defined by a power start signal external to the power supply device. The auxiliary power supply circuit can generate an auxiliary voltage to the second path during standby to supply power to the second load. The first end and the second end of the switch circuit are coupled to the first path and the second path, respectively. The control circuit is coupled to the control end of the switch circuit. The control circuit can turn on the switching circuit during normal power supply to supply the main voltage of the main power circuit to the first load and the second load, and the control circuit can control the auxiliary power circuit to stop outputting the auxiliary voltage during the normal power supply. The control circuit can turn off the switching circuit during standby. The control circuit can control the auxiliary power circuit to resume outputting the auxiliary voltage during standby to supply power to the second load.
本發明的實施例提供一種電源供應方法。所述電源供應方法包括:由主電源電路在正常供電期間產生主電壓至第一路徑,以供電給第一負載,其中該正常供電期間是由電源供應裝置外部的電源啟動信號所定義;由輔助電源電路在待機期間產生輔助電壓至第二路徑,以供電給第二負載;將開關電路的第一端與第二端分別耦接第一路徑與第二路徑;在正常供電期間,由控制電路導通開關電路,以使主電源電路的主電壓供電給第一負載與第二負載;在正常供電期間,由控制電路控制輔助電源電路停止輸出輔助電壓;在待機期間,由控制電路控制輔助電源電路恢復輸出該輔助電壓,以供電給第二負載;以及在待機期間,由控制電路截止開關電路。Embodiments of the present invention provide a power supply method. The power supply method includes: generating, by a main power supply circuit, a main voltage to a first path during normal power supply to supply power to a first load, wherein the normal power supply period is defined by a power start signal external to the power supply device; The power circuit generates an auxiliary voltage to the second path during standby to supply power to the second load; coupling the first end and the second end of the switch circuit to the first path and the second path respectively; during normal power supply, by the control circuit Turning on the switch circuit to supply the main voltage of the main power circuit to the first load and the second load; during the normal power supply, the auxiliary circuit is controlled by the control circuit to stop outputting the auxiliary voltage; during standby, the auxiliary power circuit is controlled by the control circuit The auxiliary voltage is restored to supply power to the second load; and during standby, the switching circuit is turned off by the control circuit.
基於上述,本發明的諸實施例所述電源供應裝置與電源供應方法可以動態控制輔助電源電路,以決定輔助電源電路是否輸出輔助電壓。在正常供電期間,輔助電源電路停止輸出輔助電壓給第二路徑,而且主電源電路供電給第一路徑與第二路徑。在待機期間,輔助電源電路恢復輸出輔助電壓給第二路徑。Based on the above, the power supply device and the power supply method according to the embodiments of the present invention can dynamically control the auxiliary power supply circuit to determine whether the auxiliary power supply circuit outputs an auxiliary voltage. During normal powering, the auxiliary power circuit stops outputting the auxiliary voltage to the second path, and the main power circuit supplies power to the first path and the second path. During standby, the auxiliary power circuit resumes outputting the auxiliary voltage to the second path.
為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。The above described features and advantages of the invention will be apparent from the following description.
在本案說明書全文(包括申請專利範圍)中所使用的「耦接(或連接)」一詞可指任何直接或間接的連接手段。舉例而言,若文中描述第一裝置耦接(或連接)於第二裝置,則應該被解釋成該第一裝置可以直接連接於該第二裝置,或者該第一裝置可以透過其他裝置或某種連接手段而間接地連接至該第二裝置。另外,凡可能之處,在圖式及實施方式中使用相同標號的元件/構件/步驟代表相同或類似部分。不同實施例中使用相同標號或使用相同用語的元件/構件/步驟可以相互參照相關說明。The term "coupled (or connected)" as used throughout the specification (including the scope of the claims) may be used in any direct or indirect connection. For example, if the first device is described as being coupled (or connected) to the second device, it should be construed that the first device can be directly connected to the second device, or the first device can be A connection means is indirectly connected to the second device. In addition, wherever possible, the elements and/ Elements/components/steps that use the same reference numbers or use the same terms in different embodiments may refer to the related description.
圖1是依照本發明的一實施例的一種電源供應裝置100的電路方塊(circuit block)示意圖。於本實施例中,電源供應裝置100適於供電給電子裝置10中的負載,例如供電給圖1所繪示的第一負載LD1與第二負載LD2。依照應用需求,所述電子裝置10可以是平板型電腦(Tablet PC)、掌上型電腦(Pocket PC)、個人電腦、筆記型電腦、個人數位助理(Personal Digital Assistant,PDA)、智慧型手機或是其他電子裝置。所述電子裝置10的電源管理電路(未繪示)可以藉由電源啟動信號PS來控制電源供應裝置100。依照電源啟動信號PS,電源供應裝置100可以決定是否產生/輸出主電壓Vmain。所述電子裝置10的所述電源管理電路已為習知技術,故不再贅述。1 is a circuit block diagram of a power supply device 100 in accordance with an embodiment of the present invention. In the present embodiment, the power supply device 100 is adapted to supply power to the load in the electronic device 10, for example, to the first load LD1 and the second load LD2 illustrated in FIG. According to the application requirements, the electronic device 10 can be a Tablet PC, a Pocket PC, a personal computer, a notebook computer, a Personal Digital Assistant (PDA), a smart phone, or Other electronic devices. The power management circuit (not shown) of the electronic device 10 can control the power supply device 100 by the power start signal PS. According to the power-on signal PS, the power supply device 100 can decide whether to generate/output the main voltage Vmain. The power management circuit of the electronic device 10 is a conventional technology and will not be described again.
所述電源啟動信號PS定義了「正常供電期間」。在此正常供電期間,所述電子裝置10的運作狀態是正常運作狀態(例如ACPI標準的S0狀態)。電源供應裝置100在正常供電期間可以產生/輸出主電壓Vmain,以供電給第一負載LD1。依照設計需求,所述第一負載LD1可以包含中央處理器、記憶體與/或其他電路(或元件)。電源供應裝置100在非正常供電期間(例如待機期間)停止提供主電壓Vmain給第一負載LD1。除此之外,在待機期間中,此電源供應裝置100會產生/輸出輔助電壓(或稱待機電壓)Vsb,以供電給第二負載LD2。依照設計需求,所述第二負載LD2可以包含電源管理控制器(power management controller)與/或其他電路(或元件)。The power start signal PS defines a "normal power supply period". During this normal power supply, the operating state of the electronic device 10 is a normal operating state (for example, the S0 state of the ACPI standard). The power supply device 100 can generate/output a main voltage Vmain during normal power supply to supply power to the first load LD1. The first load LD1 may include a central processing unit, a memory, and/or other circuits (or elements) in accordance with design requirements. The power supply device 100 stops supplying the main voltage Vmain to the first load LD1 during an abnormal power supply period (for example, during standby). In addition, during the standby period, the power supply device 100 generates/outputs an auxiliary voltage (or standby voltage) Vsb to supply power to the second load LD2. According to design requirements, the second load LD2 may include a power management controller and/or other circuits (or components).
請參照圖1,電源供應裝置100包括主電源電路110、輔助電源電路120、控制電路130、開關電路140以及保護偵測電路150。依照設計需求,主電源電路110與/或輔助電源電路120的電路拓撲型態可以為順向式(Forward)電力轉換電路、反馳式(Flyback)電力轉換電路、主動箝位半橋式(Active Clamp and Half Bridge)電力轉換電路、主動箝位全橋式(Active Clamp and Full Bridge)電力轉換電路、推挽式(Push-Pull)電力轉換電路或是其他電力轉換電路。主電源電路110可以在所述正常供電期間進行電力轉換,以產生主電壓Vmain至第一路徑Pth1,進而供電給第一負載LD1。輔助電源電路120可以在待機期間進行電力轉換,以產生輔助電壓Vsb至第二路徑Pth2,進而供電給第二負載LD2。其中,所述第一負載LD1可稱為「主電源負載」,所述第二負載LD2可稱之為「輔助電源負載」或「待機電壓負載」。Referring to FIG. 1 , the power supply device 100 includes a main power circuit 110 , an auxiliary power circuit 120 , a control circuit 130 , a switch circuit 140 , and a protection detection circuit 150 . According to design requirements, the circuit topology of the main power circuit 110 and/or the auxiliary power circuit 120 may be a forward power conversion circuit, a flyback power conversion circuit, and an active clamp half bridge (Active). Clamp and Half Bridge) Power conversion circuit, Active Clamp and Full Bridge power conversion circuit, Push-Pull power conversion circuit or other power conversion circuit. The main power supply circuit 110 may perform power conversion during the normal power supply to generate the main voltage Vmain to the first path Pth1, thereby supplying power to the first load LD1. The auxiliary power supply circuit 120 may perform power conversion during standby to generate the auxiliary voltage Vsb to the second path Pth2, thereby supplying power to the second load LD2. The first load LD1 may be referred to as a “main power load”, and the second load LD2 may be referred to as an “auxiliary power load” or a “standby voltage load”.
圖2是依照本發明的一實施例的一種電源供應方法的流程示意圖。請參照圖1與圖2。在正常供電期間(例如ACPI標準的S0狀態),此主電壓Vmain可供電給第一負載LD1(步驟S210)。電源供應裝置10的保護偵測電路150耦接至第一路徑Pth1,以偵測第一路徑Pth1的電壓及/或電流。當第一路徑Pth1發生過電壓事件及/或過電流事件時,亦即當主電源電路110發生故障事件(例如過電壓事件、過電流事件及/或其他事件)時,保護偵測電路150可以即時地發出故障信號FPO來通知電源以告知系統。依照設計需求,保護偵測電路150可以是習知的偵測電路或是其他保護偵測電路/元件。2 is a flow chart showing a power supply method according to an embodiment of the invention. Please refer to FIG. 1 and FIG. 2 . During the normal power supply period (for example, the S0 state of the ACPI standard), the main voltage Vmain can be supplied to the first load LD1 (step S210). The protection detection circuit 150 of the power supply device 10 is coupled to the first path Pth1 to detect the voltage and/or current of the first path Pth1. When the first path Pth1 has an overvoltage event and/or an overcurrent event, that is, when the main power circuit 110 has a fault event (eg, an overvoltage event, an overcurrent event, and/or other event), the protection detection circuit 150 may The fault signal FPO is issued immediately to notify the power supply to inform the system. According to design requirements, the protection detection circuit 150 can be a conventional detection circuit or other protection detection circuit/component.
開關電路140的第一端與第二端分別耦接至第一路徑Pth1與第二路徑Pth2。控制電路130耦接至開關電路140的控制端。在正常供電期間,控制電路130可以藉由控制信號SR來導通(turn on)開關電路140,以使主電源電路110的主電壓Vmain還可以經由開關電路140與第二路徑Pth2而供電給第二負載LD2(步驟S210)。在此正常供電期間,控制電路130還可以藉由控制信號Ssb去控制輔助電源電路120,以使輔助電源電路120停止輸出輔助電壓Vsb(步驟S210)。受限於電路規格與拓墣型態的設計,在重載的條件下(在正常供電期間中),輔助電源電路120的電力轉換效率遠低於主電源電路110的電力轉換效率。因此在正常供電期間中,藉由停止輸出輔助電壓Vsb可以節省輔助電源電路120的功耗。The first end and the second end of the switch circuit 140 are coupled to the first path Pth1 and the second path Pth2, respectively. The control circuit 130 is coupled to the control terminal of the switch circuit 140. During normal power supply, the control circuit 130 can turn on the switch circuit 140 by the control signal SR, so that the main voltage Vmain of the main power circuit 110 can also be powered to the second via the switch circuit 140 and the second path Pth2. Load LD2 (step S210). During this normal power supply, the control circuit 130 can also control the auxiliary power supply circuit 120 by the control signal Ssb to stop the auxiliary power supply circuit 120 from outputting the auxiliary voltage Vsb (step S210). Due to the design of the circuit specification and the topology, under the condition of heavy load (during the normal power supply period), the power conversion efficiency of the auxiliary power supply circuit 120 is much lower than the power conversion efficiency of the main power supply circuit 110. Therefore, during the normal power supply period, the power consumption of the auxiliary power supply circuit 120 can be saved by stopping the output of the auxiliary voltage Vsb.
在待機期間,控制電路130可以控制輔助電源電路120恢復輸出輔助電壓Vsb至第二路徑Pth2,以供電給第二負載LD2(步驟S220)。接下來,控制電路130可以截止(turn off)開關電路140(步驟S220)。因此,不論是在待機期間或是在正常供電期間,電源供應裝置100都可以持續供電給第二負載LD2,以便讓第二負載LD2維持正常功能。主電源電路110在此待機期間停止供應主電壓Vmain至第一路徑Pth1,亦即停止供電給第一負載LD1(步驟S220)。During standby, the control circuit 130 may control the auxiliary power supply circuit 120 to restore the output auxiliary voltage Vsb to the second path Pth2 to supply power to the second load LD2 (step S220). Next, the control circuit 130 can turn off the switch circuit 140 (step S220). Therefore, the power supply device 100 can continuously supply power to the second load LD2 during standby or during normal power supply to maintain the second load LD2 in a normal function. The main power supply circuit 110 stops supplying the main voltage Vmain to the first path Pth1 during this standby period, that is, stops supplying power to the first load LD1 (step S220).
在一些實施例中,控制電路130還可以藉由控制指令Sref去控制輔助電源電路120,以調整輔助電壓Vsb的額定電壓準位。舉例來說,圖3是依照本發明的一實施例說明圖1所示電源供應裝置100在從待機期間切換至正常供電期間的流程示意圖。請參照圖1與圖3。電源啟動信號PS表示「關機態」,因此電源供應裝置100進入待機期間。在待機期間,主電源電路110停止供應主電壓Vmain,並且控制電路130可以產生控制指令Sref以通知輔助電源電路120將輔助電壓Vsb設定為「高額定電壓」(步驟S310)。依照控制指令Sref的控制,輔助電源電路120將輔助電壓Vsb的準位拉升至額定電壓Vsb_high。所述「高額定電壓」(額定電壓Vsb_high)的準位可以依照設計需求來決定。舉例來說(但不限於此),所述「高額定電壓」的準位可以是5伏特或是其他準位。In some embodiments, the control circuit 130 can also control the auxiliary power circuit 120 by the control command Sref to adjust the rated voltage level of the auxiliary voltage Vsb. For example, FIG. 3 is a flow chart showing the power supply device 100 of FIG. 1 during switching from standby to normal power supply according to an embodiment of the invention. Please refer to FIG. 1 and FIG. 3. The power-on signal PS indicates the "off state", so the power supply device 100 enters the standby period. During the standby period, the main power supply circuit 110 stops supplying the main voltage Vmain, and the control circuit 130 can generate the control command Sref to notify the auxiliary power supply circuit 120 to set the auxiliary voltage Vsb to "high rated voltage" (step S310). In accordance with the control of the control command Sref, the auxiliary power supply circuit 120 pulls the level of the auxiliary voltage Vsb to the rated voltage Vsb_high. The level of the "high rated voltage" (rated voltage Vsb_high) can be determined according to design requirements. For example, but not limited to, the "high rated voltage" level may be 5 volts or other level.
於步驟S320中,電源供應裝置100將判定電源啟動信號PS是否轉為「開機態」。當電源啟動信號PS轉為「開機態」時,亦即電源供應裝置100的操作期間從待機期間切換至正常供電期間,步驟S330會被執行。於步驟S330中,主電源電路110產生主電壓Vmain至第一路徑Pth1,以供電給第一負載LD1。於步驟S330中,控制電路130可以產生控制指令Sref,以通知輔助電源電路120將輔助電壓Vsb從「高額定電壓」調低至為「低額定電壓」。依照控制指令Sref的控制,輔助電源電路120將輔助電壓Vsb的準位從額定電壓Vsb_high調低至額定電壓Vsb_low。所述「低額定電壓」(額定電壓Vsb_low)的準位可以依照設計需求來決定。舉例來說(但不限於此),所述「低額定電壓」的準位可以是4.92伏特或是其他低於「高額定電壓」的準位。In step S320, the power supply device 100 determines whether the power-on signal PS is turned "on". When the power-on signal PS is turned "on", that is, during the operation of the power supply device 100, from the standby period to the normal power supply period, step S330 is executed. In step S330, the main power supply circuit 110 generates the main voltage Vmain to the first path Pth1 to supply power to the first load LD1. In step S330, the control circuit 130 may generate a control command Sref to notify the auxiliary power supply circuit 120 to lower the auxiliary voltage Vsb from "high rated voltage" to "low rated voltage". In accordance with the control of the control command Sref, the auxiliary power supply circuit 120 lowers the level of the auxiliary voltage Vsb from the rated voltage Vsb_high to the rated voltage Vsb_low. The level of the "low rated voltage" (rated voltage Vsb_low) can be determined according to design requirements. For example, but not limited to, the "low rated voltage" level may be 4.92 volts or other levels below the "high rated voltage".
在控制電路130控制輔助電源電路120將輔助電壓Vsb拉低至額定電壓Vsb_low後,控制電路130在步驟S340導通了開關電路140。在控制電路130導通了開關電路140後,控制電路130在步驟S350控制輔助電源電路120停止輸出輔助電壓Vsb。因此在正常供電期間中,藉由停止輸出輔助電壓Vsb可以節省輔助電源電路120的功耗。在輔助電源電路120停止輸出輔助電壓Vsb的期間,藉由導通開關電路140可以持續供電給第二路徑Pth2的負載。因此,不論是在待機期間或是在正常供電期間,電源供應裝置100都可以持續供電給第二負載LD2,以便讓第二負載LD2維持正常功能。After the control circuit 130 controls the auxiliary power supply circuit 120 to pull the auxiliary voltage Vsb low to the rated voltage Vsb_low, the control circuit 130 turns on the switching circuit 140 in step S340. After the control circuit 130 turns on the switch circuit 140, the control circuit 130 controls the auxiliary power supply circuit 120 to stop outputting the auxiliary voltage Vsb in step S350. Therefore, during the normal power supply period, the power consumption of the auxiliary power supply circuit 120 can be saved by stopping the output of the auxiliary voltage Vsb. While the auxiliary power supply circuit 120 stops outputting the auxiliary voltage Vsb, the load of the second path Pth2 can be continuously supplied by the conduction switch circuit 140. Therefore, the power supply device 100 can continuously supply power to the second load LD2 during standby or during normal power supply to maintain the second load LD2 in a normal function.
圖4是依照本發明的一實施例說明當在正常供電期間中發生故障事件時,圖1所示電源供應裝置100的流程示意圖。電源啟動信號PS表示「開機態」,因此電源供應裝置100進入正常供電期間。如圖3的相關說明,在正常供電期間,主電源電路110產生主電壓Vmain至第一路徑Pth1,控制電路130可以產生控制指令Sref以表示「低額定電壓」,開關電路140被導通,以及輔助電源電路120停止輸出輔助電壓Vsb(步驟S410)。4 is a flow chart showing the power supply device 100 of FIG. 1 when a failure event occurs during a normal power supply period, in accordance with an embodiment of the present invention. The power-on signal PS indicates the "on state", so the power supply device 100 enters the normal power supply period. 3, during the normal power supply, the main power circuit 110 generates the main voltage Vmain to the first path Pth1, and the control circuit 130 can generate the control command Sref to indicate the "low rated voltage", the switch circuit 140 is turned on, and the auxiliary The power supply circuit 120 stops outputting the auxiliary voltage Vsb (step S410).
請參照圖1與圖4。在步驟S420中,保護偵測電路150判定電源供應裝置100是否發生故障事件(例如過電壓事件、過電流事件及/或其他事件),以產生故障信號FPO。當故障信號FPO表示發生了故障事件時,步驟S430會被執行。Please refer to FIG. 1 and FIG. 4. In step S420, the protection detection circuit 150 determines whether the power supply device 100 has a fault event (eg, an overvoltage event, an overcurrent event, and/or other event) to generate the fault signal FPO. When the failure signal FPO indicates that a failure event has occurred, step S430 is executed.
當電源供應裝置100的保護偵測電路150的故障信號FPO表示主電源電路110發生了故障事件時,控制電路130可以產生表示「高額定電壓」的控制指令Sref去控制輔助電源電路120(步驟S430)。依照控制指令Sref的控制,輔助電源電路120將輔助電壓Vsb的準位從額定電壓Vsb_low拉升至額定電壓Vsb_high。接下來,控制電路130可以藉由控制信號Ssb去控制輔助電源電路120,以使輔助電源電路120恢復輸出輔助電壓Vsb(步驟S440)。在輔助電源電路120恢復輸出輔助電壓Vsb後,控制電路130可以截止開關電路140(步驟S450)。因此,不論主電源電路110是否發生了故障事件,電源供應裝置100都可以持續供電給第二負載LD2,以便讓第二負載LD2維持正常功能。When the fault signal FPO of the protection detecting circuit 150 of the power supply device 100 indicates that a failure event has occurred in the main power circuit 110, the control circuit 130 may generate a control command Sref indicating "high rated voltage" to control the auxiliary power circuit 120 (step S430). ). In accordance with the control of the control command Sref, the auxiliary power supply circuit 120 pulls the level of the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high. Next, the control circuit 130 can control the auxiliary power supply circuit 120 by the control signal Ssb to cause the auxiliary power supply circuit 120 to restore the output auxiliary voltage Vsb (step S440). After the auxiliary power supply circuit 120 resumes the output auxiliary voltage Vsb, the control circuit 130 may turn off the switching circuit 140 (step S450). Therefore, regardless of whether or not the main power supply circuit 110 has a failure event, the power supply device 100 can continuously supply power to the second load LD2 to maintain the second load LD2 in a normal function.
圖5是依照本發明的另一實施例說明當在正常供電期間中發生故障事件時,圖1所示電源供應裝置100的流程示意圖。圖5所示步驟S410~4450可以參照圖4的相關說明,故不再贅述。於圖5所示實施例中,當電源供應裝置100的保護偵測電路150的故障信號FPO表示主電源電路110發生了故障事件時,步驟S430與步驟S440可以同時進行。在輔助電源電路120恢復輸出輔助電壓Vsb後,控制電路130可以進行步驟S450以截止開關電路140。FIG. 5 is a flow chart showing the power supply device 100 of FIG. 1 when a failure event occurs during a normal power supply period in accordance with another embodiment of the present invention. Steps S410 to 4450 shown in FIG. 5 can refer to the related description of FIG. 4, and therefore will not be described again. In the embodiment shown in FIG. 5, when the fault signal FPO of the protection detecting circuit 150 of the power supply device 100 indicates that the main power circuit 110 has a failure event, step S430 and step S440 can be performed simultaneously. After the auxiliary power supply circuit 120 resumes outputting the auxiliary voltage Vsb, the control circuit 130 may proceed to step S450 to turn off the switching circuit 140.
圖6是依照本發明的一實施例說明圖1所示電源供應裝置100在從正常供電期間切換至待機期間的流程示意圖。電源啟動信號PS表示「開機態」,因此電源供應裝置100進入正常供電期間。如圖3的相關說明,在正常供電期間,主電源電路110產生主電壓Vmain至第一路徑Pth1,控制電路130可以產生控制指令Sref以表示「低額定電壓」,開關電路140被導通,以及輔助電源電路120停止輸出輔助電壓Vsb(步驟S610)。FIG. 6 is a flow chart showing the power supply device 100 of FIG. 1 during a period of switching from a normal power supply to a standby period, in accordance with an embodiment of the present invention. The power-on signal PS indicates the "on state", so the power supply device 100 enters the normal power supply period. 3, during the normal power supply, the main power circuit 110 generates the main voltage Vmain to the first path Pth1, and the control circuit 130 can generate the control command Sref to indicate the "low rated voltage", the switch circuit 140 is turned on, and the auxiliary The power supply circuit 120 stops outputting the auxiliary voltage Vsb (step S610).
請參照圖1與圖6。於步驟S620中,電源供應裝置100將判定電源啟動信號PS是否轉為「關機態」。當電源啟動信號PS轉為「關機態」時,亦即電源供應裝置100的操作期間從正常供電期間切換至待機期間,步驟S630會被執行。於步驟S630中,主電源電路110停止供應主電壓Vmain,並且控制電路130可以產生表示「高額定電壓」的控制指令Sref給輔助電源電路120。依照控制指令Sref的控制,輔助電源電路120將輔助電壓Vsb的準位從額定電壓Vsb_low拉升至額定電壓Vsb_high。Please refer to FIG. 1 and FIG. 6. In step S620, the power supply device 100 determines whether the power-on signal PS is turned to the "off state". When the power-on signal PS is turned to the "off state", that is, during the operation of the power supply device 100, the normal power supply period is switched to the standby period, and step S630 is executed. In step S630, the main power supply circuit 110 stops supplying the main voltage Vmain, and the control circuit 130 can generate a control command Sref indicating "high rated voltage" to the auxiliary power supply circuit 120. In accordance with the control of the control command Sref, the auxiliary power supply circuit 120 pulls the level of the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high.
在控制電路130控制輔助電源電路120將輔助電壓Vsb從額定電壓Vsb_low拉升至額定電壓Vsb_high後,控制電路130可以藉由控制信號Ssb去控制輔助電源電路120,以使輔助電源電路120恢復輸出該輔助電壓Vsb(步驟S640)。在控制電路130控制輔助電源電路120恢復輸出輔助電壓Vsb後,控制電路130可以截止開關電路140(步驟S650)。因此,不論在待機期間或是在正常供電期間,電源供應裝置100都可以持續供電給第二負載LD2,以便讓第二負載LD2維持正常功能。After the control circuit 130 controls the auxiliary power supply circuit 120 to pull the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high, the control circuit 130 can control the auxiliary power supply circuit 120 by the control signal Ssb to cause the auxiliary power supply circuit 120 to resume outputting the The auxiliary voltage Vsb (step S640). After the control circuit 130 controls the auxiliary power supply circuit 120 to resume the output auxiliary voltage Vsb, the control circuit 130 may turn off the switching circuit 140 (step S650). Therefore, the power supply device 100 can continuously supply power to the second load LD2 during standby or during normal power supply, so that the second load LD2 maintains a normal function.
在待機期間,控制電路130可以控制輔助電源電路120將輔助電壓Vsb的準位從額定電壓Vsb_low拉升至額定電壓Vsb_high,其中額定電壓Vsb_low低於主電壓Vmain的額定電壓準位,而額定電壓Vsb_high可以大致上相同於主電壓Vmain的額定電壓準位。因此在待機期間,電源供應裝置100可以供電給第二負載LD2,以便讓第二負載LD2維持正常功能。在非待機期間(例如正常供電期間),控制電路130可以去控制輔助電源電路120將輔助電壓Vsb從額定電壓Vsb_high拉低至額定電壓Vsb_low。藉由將輔助電壓Vsb的準位拉低至額定電壓Vsb_low,當開關電路140被導通時,可以確保第一路徑Pth1的電壓大於第二路徑的電壓。During standby, the control circuit 130 can control the auxiliary power supply circuit 120 to raise the level of the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high, wherein the rated voltage Vsb_low is lower than the rated voltage level of the main voltage Vmain, and the rated voltage Vsb_high It can be substantially the same as the rated voltage level of the main voltage Vmain. Therefore, during standby, the power supply device 100 can supply power to the second load LD2 to maintain the second load LD2 in a normal function. During non-standby periods (eg, during normal powering), control circuit 130 may control auxiliary power supply circuit 120 to pull auxiliary voltage Vsb from nominal voltage Vsb_high to rated voltage Vsb_low. By lowering the level of the auxiliary voltage Vsb to the rated voltage Vsb_low, when the switching circuit 140 is turned on, it can be ensured that the voltage of the first path Pth1 is greater than the voltage of the second path.
圖7是依照本發明的一實施例說明圖1所示開關電路140的電路方塊示意圖。於圖7所示實施例中,開關電路140包括電阻141以及開關142。電阻141的阻值可以依照設計需求來決定。電阻141的第一端耦接至第一路徑Pth1。開關142的第一端耦接至電阻141的第二端。開關142的第二端耦接至第二路徑Pth2。開關142的控制端耦接至控制電路130,以接收控制信號SR。控制電路130可以藉由控制信號SR來導通開關142,以使主電源電路110所輸出的主電壓Vmain可以從第一路徑Pth1經由開關142而被傳輸至第二路徑Pth2。FIG. 7 is a block diagram showing the circuit of the switch circuit 140 of FIG. 1 according to an embodiment of the invention. In the embodiment shown in FIG. 7, the switch circuit 140 includes a resistor 141 and a switch 142. The resistance of the resistor 141 can be determined according to design requirements. The first end of the resistor 141 is coupled to the first path Pth1. The first end of the switch 142 is coupled to the second end of the resistor 141. The second end of the switch 142 is coupled to the second path Pth2. The control end of the switch 142 is coupled to the control circuit 130 to receive the control signal SR. The control circuit 130 can turn on the switch 142 by the control signal SR so that the main voltage Vmain output by the main power supply circuit 110 can be transmitted from the first path Pth1 to the second path Pth2 via the switch 142.
圖8是依照本發明的另一實施例說明圖1所示開關電路140的電路方塊示意圖。於圖8所示實施例中,開關電路140包括電阻141以及開關142。開關142的控制端耦接至控制電路130,以接收控制信號SR。開關142的第一端耦接至第一路徑Pth1。電阻141的第一端耦接至開關142的第二端。電阻141的第二端耦接至第二路徑Pth2。FIG. 8 is a block diagram showing the circuit of the switch circuit 140 of FIG. 1 in accordance with another embodiment of the present invention. In the embodiment shown in FIG. 8, the switch circuit 140 includes a resistor 141 and a switch 142. The control end of the switch 142 is coupled to the control circuit 130 to receive the control signal SR. The first end of the switch 142 is coupled to the first path Pth1. The first end of the resistor 141 is coupled to the second end of the switch 142. The second end of the resistor 141 is coupled to the second path Pth2.
圖9是依照本發明的又一實施例說明圖1所示開關電路140的電路方塊示意圖。於圖9所示實施例中,開關電路140包括電阻141、開關142以及電阻143。電阻141的第一端耦接至第一路徑Pth1。開關142的控制端耦接至控制電路130,以接收控制信號SR。開關142的第一端耦接至電阻141的第二端。電阻143的第一端耦接至開關142的第二端。電阻143的第二端耦接至第二路徑Pth2。FIG. 9 is a block diagram showing the circuit of the switch circuit 140 of FIG. 1 according to still another embodiment of the present invention. In the embodiment shown in FIG. 9, the switch circuit 140 includes a resistor 141, a switch 142, and a resistor 143. The first end of the resistor 141 is coupled to the first path Pth1. The control end of the switch 142 is coupled to the control circuit 130 to receive the control signal SR. The first end of the switch 142 is coupled to the second end of the resistor 141. The first end of the resistor 143 is coupled to the second end of the switch 142. The second end of the resistor 143 is coupled to the second path Pth2.
圖10是依照本發明的一實施例說明圖1所示控制電路130的電路方塊示意圖。於圖10所示實施例中,控制電路130包括啟動控制電路131、中間電路132、輔助電源控制電路133以及開關控制電路134。啟動控制電路131的輸入端可以接收電源啟動信號PS。啟動控制電路131依據電源啟動信號PS而對應產生內部啟動信號PS’。中間電路132耦接至啟動控制電路131的輸出端,以接收內部啟動信號PS’。依據內部啟動信號PS’,中間電路132可以對應產生內部信號Ssb’與內部信號SR’。FIG. 10 is a block diagram showing the circuit of the control circuit 130 of FIG. 1 according to an embodiment of the invention. In the embodiment shown in FIG. 10, the control circuit 130 includes a start control circuit 131, an intermediate circuit 132, an auxiliary power supply control circuit 133, and a switch control circuit 134. The input of the startup control circuit 131 can receive the power enable signal PS. The start control circuit 131 correspondingly generates an internal enable signal PS' in accordance with the power start signal PS. The intermediate circuit 132 is coupled to the output of the start control circuit 131 to receive the internal enable signal PS'. Depending on the internal enable signal PS', the intermediate circuit 132 can correspondingly generate the internal signal Ssb' and the internal signal SR'.
輔助電源控制電路133耦接至中間電路132,以接收內部信號Ssb’。輔助電源控制電路133依據內部信號Ssb’而對應產生控制信號Ssb給輔助電源電路120。依據控制信號Ssb的控制,輔助電源電路120在正常供電期間停止輸出輔助電壓Vsb,以及在待機期間恢復輸出輔助電壓Vsb。The auxiliary power control circuit 133 is coupled to the intermediate circuit 132 to receive the internal signal Ssb'. The auxiliary power supply control circuit 133 correspondingly generates the control signal Ssb to the auxiliary power supply circuit 120 in accordance with the internal signal Ssb'. In accordance with the control of the control signal Ssb, the auxiliary power supply circuit 120 stops outputting the auxiliary voltage Vsb during normal power supply, and restores the output auxiliary voltage Vsb during standby.
開關控制電路134耦接至中間電路132,以接收內部信號SR’。開關控制電路134依據內部信號SR’而對應產生控制信號SR給開關電路140的控制端。依據控制信號SR的控制,開關電路140在正常供電期間被導通,以及在待機期間被截止。被導通的開關電路140可以將第一路徑Pth1的主電壓Vmain傳輸至第二路徑Pth2。Switch control circuit 134 is coupled to intermediate circuit 132 to receive internal signal SR'. The switch control circuit 134 correspondingly generates a control signal SR to the control terminal of the switch circuit 140 in accordance with the internal signal SR'. In accordance with the control of the control signal SR, the switch circuit 140 is turned on during normal power supply and is turned off during standby. The turned-on switching circuit 140 can transfer the main voltage Vmain of the first path Pth1 to the second path Pth2.
在圖10所示實施例中,中間電路132更依據內部啟動信號PS’來對應產生內部信號Sref’。控制電路130更包括準位調整電路135。準位調整電路135耦接至中間電路132,以接收內部信號Sref’。準位調整電路135依據內部信號Sref’而對應產生控制指令Sref給輔助電源電路120。因此依照內部信號Sref’,準位調整電路135可以在待機期間去控制輔助電源電路120將輔助電壓Vsb從額定電壓Vsb_low拉升至額定電壓Vsb_high,以及在非待機期間(例如正常供電期間)去控制輔助電源電路120將輔助電壓Vsb從額定電壓Vsb_high拉低至額定電壓Vsb_low。In the embodiment shown in Fig. 10, the intermediate circuit 132 further generates an internal signal Sref' in accordance with the internal enable signal PS'. The control circuit 130 further includes a level adjustment circuit 135. The level adjustment circuit 135 is coupled to the intermediate circuit 132 to receive the internal signal Sref'. The level adjustment circuit 135 correspondingly generates a control command Sref to the auxiliary power supply circuit 120 in accordance with the internal signal Sref'. Therefore, according to the internal signal Sref', the level adjusting circuit 135 can control the auxiliary power supply circuit 120 to pull the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high during standby, and to control during the non-standby period (for example, during normal power supply). The auxiliary power supply circuit 120 pulls the auxiliary voltage Vsb from the rated voltage Vsb_high to the rated voltage Vsb_low.
在從待機期間進入正常供電期間時,基於中間電路132的控制,準位調整電路135可以控制輔助電源電路120將輔助電壓Vsb從額定電壓Vsb_high拉低至額定電壓Vsb_low。在準位調整電路135控制輔助電源電路120將輔助電壓Vsb拉低至額定電壓Vsb_low後,基於中間電路132的控制,開關控制電路134可以導通開關電路140。在開關控制電路134導通開關電路140後,基於中間電路132的控制,輔助電源控制電路133可以控制輔助電源電路120停止輸出輔助電壓Vsb。詳細操作可以參考圖3的相關說明來類推。Upon entering the normal power supply period from the standby period, based on the control of the intermediate circuit 132, the level adjustment circuit 135 can control the auxiliary power supply circuit 120 to pull the auxiliary voltage Vsb from the rated voltage Vsb_high to the rated voltage Vsb_low. After the level adjustment circuit 135 controls the auxiliary power supply circuit 120 to pull down the auxiliary voltage Vsb to the rated voltage Vsb_low, the switch control circuit 134 can turn on the switch circuit 140 based on the control of the intermediate circuit 132. After the switch control circuit 134 turns on the switch circuit 140, based on the control of the intermediate circuit 132, the auxiliary power supply control circuit 133 can control the auxiliary power supply circuit 120 to stop outputting the auxiliary voltage Vsb. Detailed operations can be analogized with reference to the related description of FIG.
在從正常供電期間進入待機期間時,基於中間電路132的控制,準位調整電路135可以控制輔助電源電路120將輔助電壓Vsb從額定電壓Vsb_low拉升至額定電壓Vsb_high。在準位調整電路135控制輔助電源電路120將輔助電壓Vsb從額定電壓Vsb_low拉升至額定電壓Vsb_high後,基於中間電路132的控制,輔助電源控制電路133可以控制輔助電源電路120恢復輸出輔助電壓Vsb。在輔助電源控制電路133控制輔助電源電路120恢復輸出輔助電壓Vsb後,基於中間電路132的控制,開關控制電路134可以截止開關電路140。詳細操作可以參考圖6的相關說明來類推。Upon entering the standby period from the normal power supply period, based on the control of the intermediate circuit 132, the level adjustment circuit 135 can control the auxiliary power supply circuit 120 to pull the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high. After the level adjustment circuit 135 controls the auxiliary power supply circuit 120 to pull the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high, the auxiliary power supply control circuit 133 can control the auxiliary power supply circuit 120 to resume the output auxiliary voltage Vsb based on the control of the intermediate circuit 132. . After the auxiliary power supply control circuit 133 controls the auxiliary power supply circuit 120 to resume the output auxiliary voltage Vsb, the switch control circuit 134 can turn off the switch circuit 140 based on the control of the intermediate circuit 132. Detailed operations can be analogized with reference to the related description of FIG. 6.
於圖10所示實施例中,輔助電源控制電路133與準位調整電路135更耦接至保護偵測電路150,以接收故障信號FPO。當保護偵測電路150的故障信號FPO表示主電源電路110發生故障事件時,準位調整電路135控制輔助電源電路120以便即時地將輔助電壓Vsb從額定電壓Vsb_low拉升至額定電壓Vsb_high,以及輔助電源控制電路133控制輔助電源電路120以便即時地恢復輸出輔助電壓Vsb。在輔助電源電路120恢復輸出輔助電壓Vsb後,開關控制電路134便即時地截止開關電路140。詳細操作可以參考圖4或圖5的相關說明來類推。In the embodiment shown in FIG. 10, the auxiliary power control circuit 133 and the level adjusting circuit 135 are further coupled to the protection detecting circuit 150 to receive the fault signal FPO. When the fault signal FPO of the protection detecting circuit 150 indicates that the main power circuit 110 has a fault event, the level adjusting circuit 135 controls the auxiliary power circuit 120 to immediately pull the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high, and assists The power supply control circuit 133 controls the auxiliary power supply circuit 120 to instantly restore the output auxiliary voltage Vsb. After the auxiliary power supply circuit 120 resumes outputting the auxiliary voltage Vsb, the switch control circuit 134 immediately turns off the switch circuit 140. The detailed operation can be analogized with reference to the related description of FIG. 4 or FIG. 5.
於圖10所示實施例中,控制電路130更包括輸出電壓比較電路136。輸出電壓比較電路136的第一輸入端耦接至第一路徑Pth1,以接收主電壓Vmain。輸出電壓比較電路136的第二輸入端耦接至第二路徑Pth2,以接收輔助電壓Vsb。輸出電壓比較電路136可以比較主電壓Vmain與輔助電壓Vsb而獲得比較結果Scmp。比較結果Scmp被提供給中間電路132。依據比較結果Scmp與內部啟動信號PS’,中間電路132可以對應產生內部信號Ssb’與內部信號SR’。In the embodiment shown in FIG. 10, the control circuit 130 further includes an output voltage comparison circuit 136. The first input end of the output voltage comparison circuit 136 is coupled to the first path Pth1 to receive the main voltage Vmain. The second input end of the output voltage comparison circuit 136 is coupled to the second path Pth2 to receive the auxiliary voltage Vsb. The output voltage comparison circuit 136 can compare the main voltage Vmain with the auxiliary voltage Vsb to obtain a comparison result Scmp. The comparison result Scmp is supplied to the intermediate circuit 132. Based on the comparison result Scmp and the internal enable signal PS', the intermediate circuit 132 can generate the internal signal Ssb' and the internal signal SR'.
圖11是依照本發明的一實施例說明圖10所示輸出電壓比較電路136的電路方塊示意圖。圖11所示輸出電壓比較電路136可以參照圖10的相關說明。於圖11所示實施例中,輸出電壓比較電路136包括分壓電路136_1、分壓電路136_2以及比較器136_3。FIG. 11 is a block diagram showing the circuit of the output voltage comparison circuit 136 of FIG. 10 in accordance with an embodiment of the present invention. The output voltage comparison circuit 136 shown in FIG. 11 can refer to the related description of FIG. In the embodiment shown in FIG. 11, the output voltage comparison circuit 136 includes a voltage dividing circuit 136_1, a voltage dividing circuit 136_2, and a comparator 136_3.
分壓電路136_1耦接至第二路徑Pth2,以接收輔助電壓Vsb。分壓電路136_1以第一比率RA1對輔助電壓Vsb進行分壓而產生第一分壓給比較器136_3的第一輸入端(例如非反相輸入端)。分壓電路136_1包括電阻R1與電阻R2。電阻R1的第一端耦接至第二路徑Pth2,以接收輔助電壓Vsb。電阻R2的第一端耦接至電阻R1的第二端。電阻R2的第二端耦接至參考電壓(例如接地電壓)。其中,第一比率RA1為R2/(R1+R2),而所述第一分壓為RA1*Vsb。The voltage dividing circuit 136_1 is coupled to the second path Pth2 to receive the auxiliary voltage Vsb. The voltage dividing circuit 136_1 divides the auxiliary voltage Vsb at a first ratio RA1 to generate a first divided voltage to a first input terminal (eg, a non-inverting input terminal) of the comparator 136_3. The voltage dividing circuit 136_1 includes a resistor R1 and a resistor R2. The first end of the resistor R1 is coupled to the second path Pth2 to receive the auxiliary voltage Vsb. The first end of the resistor R2 is coupled to the second end of the resistor R1. The second end of the resistor R2 is coupled to a reference voltage (eg, a ground voltage). Wherein, the first ratio RA1 is R2/(R1+R2), and the first partial pressure is RA1*Vsb.
分壓電路136_2耦接至第一路徑Pth1,以接收主電壓Vmain。分壓電路136_2以第二比率RA2對主電壓Vmain進行分壓而產生第二分壓給比較器136_3的第二輸入端(例如反相輸入端)。分壓電路136_2包括電阻R3與電阻R4。電阻R3的第一端耦接至第一路徑Pth1,以接收主電壓Vmain。電阻R4的第一端耦接至電阻R3的第二端。電阻R4的第二端耦接至參考電壓(例如接地電壓)。其中,第二比率RA2為R4/(R3+R4),而所述第二分壓為RA2*Vmain。第二比率RA2大於或等於第一比率RA1。The voltage dividing circuit 136_2 is coupled to the first path Pth1 to receive the main voltage Vmain. The voltage dividing circuit 136_2 divides the main voltage Vmain at a second ratio RA2 to generate a second divided voltage to the second input terminal (eg, the inverting input terminal) of the comparator 136_3. The voltage dividing circuit 136_2 includes a resistor R3 and a resistor R4. The first end of the resistor R3 is coupled to the first path Pth1 to receive the main voltage Vmain. The first end of the resistor R4 is coupled to the second end of the resistor R3. The second end of the resistor R4 is coupled to a reference voltage (eg, a ground voltage). Wherein, the second ratio RA2 is R4/(R3+R4), and the second partial pressure is RA2*Vmain. The second ratio RA2 is greater than or equal to the first ratio RA1.
比較器136_3的輸出端產生比較結果Scmp給中間電路132。輸出電壓比較電路136更可以選擇性地配置拉昇電阻136_4。拉昇電阻136_4的第一端耦接至比較器136_3的輸出端。拉昇電阻136_4的第二端耦接至電壓源,例如耦接至輔助電源電路120以接收輔助電壓Vsb。於圖11所示實施例中,比較器136_3的第一輸入端更耦接至啟動控制電路131的輸出端,以接收內部啟動信號PS’。The output of comparator 136_3 produces a comparison result Scmp to intermediate circuit 132. The output voltage comparison circuit 136 can more selectively configure the pull-up resistor 136_4. The first end of the pull-up resistor 136_4 is coupled to the output of the comparator 136_3. The second end of the pull-up resistor 136_4 is coupled to a voltage source, for example, to the auxiliary power circuit 120 to receive the auxiliary voltage Vsb. In the embodiment shown in FIG. 11, the first input of the comparator 136_3 is further coupled to the output of the start control circuit 131 to receive the internal enable signal PS'.
圖12是依照本發明的一實施例說明圖10所示啟動控制電路131的電路方塊示意圖。圖12所示啟動控制電路131可以參照圖10的相關說明。啟動控制電路131包括放大電路。所述放大電路的輸入端接收電源啟動信號PS,而所述放大電路的輸出端耦接至中間電路132以提供內部啟動信號PS’。FIG. 12 is a block diagram showing the circuit of the startup control circuit 131 of FIG. 10 in accordance with an embodiment of the present invention. The startup control circuit 131 shown in FIG. 12 can refer to the related description of FIG. The startup control circuit 131 includes an amplification circuit. An input of the amplifying circuit receives a power enable signal PS, and an output of the amplifying circuit is coupled to the intermediate circuit 132 to provide an internal enable signal PS'.
於圖12所示實施例中,啟動控制電路131的所述放大電路包括運算放大器131_1。運算放大器131_1的第一輸入端(例如非反相輸入端)接收電源啟動信號PS。運算放大器131_1的第二輸入端(例如反相輸入端)耦接至運算放大器131_1的輸出端。運算放大器131_1的輸出端耦接至中間電路132,以提供內部啟動信號PS’。詳而言之,啟動控制電路131的所述放大電路包括運算放大器131_1、電阻131_2、二極體131_3、電阻131_4以及電容131_5。電阻131_2的第一端接收電源啟動信號PS。二極體131_3的陰極耦接至電阻131_2的第一端。二極體131_3的陽極耦接至電阻131_2的第二端。電阻131_4的第一端接至電阻131_2的第二端。電阻131_4的第二端耦接至參考電壓(例如接地電壓)。電容131_5的第一端耦接至電阻131_2的第二端。電容131_5的第二端耦接至參考電壓(例如接地電壓)。運算放大器131_1的第一輸入端(例如非反相輸入端)耦接至電阻131_2的第二端。In the embodiment shown in FIG. 12, the amplifying circuit of the start control circuit 131 includes an operational amplifier 131_1. A first input (eg, a non-inverting input) of operational amplifier 131_1 receives a power enable signal PS. A second input terminal (eg, an inverting input terminal) of the operational amplifier 131_1 is coupled to an output terminal of the operational amplifier 131_1. The output of operational amplifier 131_1 is coupled to intermediate circuit 132 to provide an internal enable signal PS'. In detail, the amplifying circuit of the startup control circuit 131 includes an operational amplifier 131_1, a resistor 131_2, a diode 131_3, a resistor 131_4, and a capacitor 131_5. The first end of the resistor 131_2 receives the power start signal PS. The cathode of the diode 131_3 is coupled to the first end of the resistor 131_2. The anode of the diode 131_3 is coupled to the second end of the resistor 131_2. The first end of the resistor 131_4 is connected to the second end of the resistor 131_2. The second end of the resistor 131_4 is coupled to a reference voltage (eg, a ground voltage). The first end of the capacitor 131_5 is coupled to the second end of the resistor 131_2. The second end of the capacitor 131_5 is coupled to a reference voltage (eg, a ground voltage). A first input terminal (eg, a non-inverting input terminal) of the operational amplifier 131_1 is coupled to the second terminal of the resistor 131_2.
圖13是依照本發明的另一實施例說明圖10所示啟動控制電路131的電路方塊示意圖。圖13所示啟動控制電路131包括放大電路,其中所述放大電路包括運算放大器131_1、電阻131_2、二極體131_3、電阻131_4、電容131_5以及非反相放大器131_6。圖13所示運算放大器131_1、電阻131_2、二極體131_3、電阻131_4與電容131_5可以參照圖12的相關說明,故不再贅述。於圖13所示實施例中,運算放大器131_1的輸出端耦接至非反相放大器131_6的輸入端。非反相放大器131_6的輸出端耦接至中間電路132,以提供內部啟動信號PS’。FIG. 13 is a block diagram showing the circuit of the startup control circuit 131 of FIG. 10 in accordance with another embodiment of the present invention. The startup control circuit 131 shown in FIG. 13 includes an amplification circuit including an operational amplifier 131_1, a resistor 131_2, a diode 131_3, a resistor 131_4, a capacitor 131_5, and a non-inverting amplifier 131_6. The operational amplifier 131_1, the resistor 131_2, the diode 131_3, the resistor 131_4, and the capacitor 131_5 shown in FIG. 13 can be referred to the related description of FIG. 12, and therefore will not be described again. In the embodiment shown in FIG. 13, the output of the operational amplifier 131_1 is coupled to the input of the non-inverting amplifier 131_6. The output of the non-inverting amplifier 131_6 is coupled to the intermediate circuit 132 to provide an internal enable signal PS'.
圖14是依照本發明的一實施例說明圖10所示中間電路132的電路方塊示意圖。圖14所示中間電路132可以參照圖10的相關說明。圖14所示中間電路132包括運算放大器132_1、電阻132_2、二極體132_3以及比較電路132_4。運算放大器132_1的第一輸入端(例如非反相輸入端)耦接至輸出電壓比較電路136的輸出端,以接收比較結果Scmp。電阻132_2的第一端耦接至啟動控制電路131的輸出端,以接收內部啟動信號PS’。二極體132_3的陽極耦接至電阻132_2的第二端。二極體的陰極耦接至運算放大器132_1的第一輸入端。FIG. 14 is a block diagram showing the circuit of the intermediate circuit 132 of FIG. 10 in accordance with an embodiment of the present invention. The intermediate circuit 132 shown in FIG. 14 can be referred to the related description of FIG. The intermediate circuit 132 shown in FIG. 14 includes an operational amplifier 132_1, a resistor 132_2, a diode 132_3, and a comparison circuit 132_4. A first input terminal (eg, a non-inverting input terminal) of the operational amplifier 132_1 is coupled to an output of the output voltage comparison circuit 136 to receive the comparison result Scmp. The first end of the resistor 132_2 is coupled to the output of the start control circuit 131 to receive the internal enable signal PS'. The anode of the diode 132_3 is coupled to the second end of the resistor 132_2. The cathode of the diode is coupled to the first input of the operational amplifier 132_1.
依照設計需求,中間電路132還可以配置電阻132_5以及電容132_6。電阻132_5的第一端耦接至運算放大器132_1的第一輸入端。電阻132_5的第二端耦接至參考電壓(例如接地電壓)。電容132_6的第一端耦接至運算放大器132_1的第一輸入端。電容132_6的第二端耦接至參考電壓(例如接地電壓)。The intermediate circuit 132 can also configure the resistor 132_5 and the capacitor 132_6 according to design requirements. The first end of the resistor 132_5 is coupled to the first input terminal of the operational amplifier 132_1. The second end of the resistor 132_5 is coupled to a reference voltage (eg, a ground voltage). The first end of the capacitor 132_6 is coupled to the first input of the operational amplifier 132_1. The second end of the capacitor 132_6 is coupled to a reference voltage (eg, a ground voltage).
運算放大器132_1的第二輸入端(例如反相輸入端)耦接至運算放大器132_1的輸出端。運算放大器132_1的輸出端產生內部信號SR’給開關控制電路134。比較電路132_4的輸入端耦接至運算放大器132_1的輸出端,以接收內部信號SR’。比較電路132_4比較內部信號SR’與參考電壓Vref1而獲得比較結果,以及將此比較結果作為內部信號Ssb’與內部信號Sref’。所述參考電壓Vref1的準位可以依照設計需求來定。A second input (eg, an inverting input) of the operational amplifier 132_1 is coupled to an output of the operational amplifier 132_1. The output of operational amplifier 132_1 produces an internal signal SR' to switch control circuit 134. The input of the comparison circuit 132_4 is coupled to the output of the operational amplifier 132_1 to receive the internal signal SR'. The comparison circuit 132_4 compares the internal signal SR' with the reference voltage Vref1 to obtain a comparison result, and uses this comparison result as the internal signal Ssb' and the internal signal Sref'. The level of the reference voltage Vref1 can be determined according to design requirements.
任何比較電路/元件(例如習知比較電路或其他電壓比較器)皆可以用來實施比較電路132_4。於圖14所示實施例中,比較電路132_4包括電阻1401、電容1402、參考電壓源1403與比較器1404。第一電阻1401的第一端耦接至運算放大器132_1的輸出端,以接收內部信號SR’。電容1402的第一端耦接至電阻1401的第二端。電容1402的第二端耦接至參考電壓(例如接地電壓)。參考電壓源1403可以提供參考電壓Vref1給比較器1404。任何參考電壓產生電路/元件(例如習知參考電壓源或其他參考電壓產生器)皆可以用來實施參考電壓源1403。比較器1404的第一輸入端(例如非反相輸入端)耦接至第一電阻1401的第二端。比較器1404的第二輸入端(例如反相輸入端)耦接至參考電壓源1403,以接收參考電壓Vref1。比較器1404的輸出端產生內部信號Ssb’給輔助電源控制電路133,以及產生內部信號Sref’ 給準位調整電路135。Any comparison circuit/component (such as a conventional comparison circuit or other voltage comparator) can be used to implement the comparison circuit 132_4. In the embodiment shown in FIG. 14, the comparison circuit 132_4 includes a resistor 1401, a capacitor 1402, a reference voltage source 1403, and a comparator 1404. The first end of the first resistor 1401 is coupled to the output of the operational amplifier 132_1 to receive the internal signal SR'. The first end of the capacitor 1402 is coupled to the second end of the resistor 1401. The second end of the capacitor 1402 is coupled to a reference voltage (eg, a ground voltage). The reference voltage source 1403 can provide a reference voltage Vref1 to the comparator 1404. Any reference voltage generating circuit/component, such as a conventional reference voltage source or other reference voltage generator, can be used to implement the reference voltage source 1403. A first input (eg, a non-inverting input) of the comparator 1404 is coupled to a second end of the first resistor 1401. The second input terminal (eg, the inverting input terminal) of the comparator 1404 is coupled to the reference voltage source 1403 to receive the reference voltage Vref1. The output of the comparator 1404 generates an internal signal Ssb' to the auxiliary power supply control circuit 133, and generates an internal signal Sref' to the level adjustment circuit 135.
圖15是依照本發明的一實施例說明圖10所示開關控制電路134的電路方塊示意圖。圖15所示開關控制電路134可以參照圖10的相關說明。於圖15所示實施例中,開關控制電路134包括二極體134_1、電阻134_2以及比較電路134_3。二極體134_1的陽極耦接至中間電路132,以接收內部信號SR’。電阻134_2的第一端耦接至二極體134_1的陰極。Figure 15 is a block diagram showing the circuit of the switch control circuit 134 of Figure 10 in accordance with an embodiment of the present invention. The switch control circuit 134 shown in FIG. 15 can refer to the related description of FIG. In the embodiment shown in FIG. 15, the switch control circuit 134 includes a diode 134_1, a resistor 134_2, and a comparison circuit 134_3. The anode of the diode 134_1 is coupled to the intermediate circuit 132 to receive the internal signal SR'. The first end of the resistor 134_2 is coupled to the cathode of the diode 134_1.
依照設計需求,開關控制電路134還可以配置電阻134_4以及電容134_6。電阻134_4的第一端耦接至電阻134_2的第二端。電阻134_4的第二端耦接至參考電壓(例如接地電壓)。電容134_5的第一端耦接至電阻134_2的第二端。電容134_5的第二端耦接至參考電壓(例如接地電壓)。The switch control circuit 134 can also configure the resistor 134_4 and the capacitor 134_6 according to design requirements. The first end of the resistor 134_4 is coupled to the second end of the resistor 134_2. The second end of the resistor 134_4 is coupled to a reference voltage (eg, a ground voltage). The first end of the capacitor 134_5 is coupled to the second end of the resistor 134_2. The second end of the capacitor 134_5 is coupled to a reference voltage (eg, a ground voltage).
比較電路134_3的輸入端耦接至電阻134_2的第二端。比較電路134_3比較第二內部信號SR’與參考電壓Vref2而獲得比較結果,以及將此比較結果作為控制信號SR傳輸給開關電路140的控制端。所述參考電壓Vref2的準位可以依照設計需求來定。The input end of the comparison circuit 134_3 is coupled to the second end of the resistor 134_2. The comparison circuit 134_3 compares the second internal signal SR' with the reference voltage Vref2 to obtain a comparison result, and transmits the comparison result as a control signal SR to the control terminal of the switching circuit 140. The level of the reference voltage Vref2 can be determined according to design requirements.
任何比較電路/元件(例如習知比較電路或其他電壓比較器)皆可以用來實施比較電路134_3。於圖15所示實施例中,比較電路134_3包括參考電壓源1501、比較器1502、電阻1503、二極體1504以及拉昇電阻1505。參考電壓源1501可以提供參考電壓Vref2給比較器1502。任何參考電壓產生電路/元件(例如習知參考電壓源或其他參考電壓產生器)皆可以用來實施參考電壓源1501。Any comparison circuit/component (such as a conventional comparison circuit or other voltage comparator) can be used to implement the comparison circuit 134_3. In the embodiment shown in FIG. 15, the comparison circuit 134_3 includes a reference voltage source 1501, a comparator 1502, a resistor 1503, a diode 1504, and a pull-up resistor 1505. The reference voltage source 1501 can provide a reference voltage Vref2 to the comparator 1502. Any reference voltage generating circuit/component, such as a conventional reference voltage source or other reference voltage generator, can be used to implement the reference voltage source 1501.
比較器1502的第一輸入端(例如非反相輸入端)耦接至參考電壓源1501,以接收參考電壓Vref2。比較器1502的第二輸入端(例如反相輸入端)耦接至電阻134_2的第二端。電阻1503的第一端耦接至比較器1502的輸出端。電阻1503的第二端耦接至開關電路140的控制端,以提供控制信號SR。二極體1504的陽極耦接至比較器1502的輸出端。二極體1504的陰極耦接至開關電路140的控制端。拉昇電阻1505的第一端耦接至比較器1502的輸出端。拉昇電阻1505的第二端耦接至電壓源12V。A first input (eg, a non-inverting input) of the comparator 1502 is coupled to the reference voltage source 1501 to receive the reference voltage Vref2. A second input (eg, an inverting input) of the comparator 1502 is coupled to the second end of the resistor 134_2. The first end of the resistor 1503 is coupled to the output of the comparator 1502. The second end of the resistor 1503 is coupled to the control terminal of the switch circuit 140 to provide a control signal SR. The anode of the diode 1504 is coupled to the output of the comparator 1502. The cathode of the diode 1504 is coupled to the control terminal of the switching circuit 140. The first end of the pull-up resistor 1505 is coupled to the output of the comparator 1502. The second end of the pull-up resistor 1505 is coupled to the voltage source 12V.
圖16是依照本發明的一實施例說明圖10所示輔助電源控制電路133的電路方塊示意圖。圖16所示輔助電源控制電路133可以參照圖10的相關說明。於圖16所示實施例中,輔助電源控制電路133包括比較電路133_1、電阻133_2、光耦合電晶體133_3、光耦合發光二極體133_4、電阻133_5、光耦合發光二極體133_6、光耦合電晶體133_7以及比較電路133_8。比較電路133_1的輸入端耦接至中間電路132,以接收內部信號Ssb’。比較電路133_1比較內部信號Ssb’與參考電壓Vref3而獲得比較結果。電阻133_2的第一端耦接至比較電路133_1的輸出端,以接收所述比較結果。Figure 16 is a block diagram showing the circuit of the auxiliary power supply control circuit 133 of Figure 10 in accordance with an embodiment of the present invention. The auxiliary power supply control circuit 133 shown in Fig. 16 can refer to the related description of Fig. 10. In the embodiment shown in FIG. 16, the auxiliary power supply control circuit 133 includes a comparison circuit 133_1, a resistor 133_2, a photocoupled transistor 133_3, a light-coupled light-emitting diode 133_4, a resistor 133_5, a light-coupled light-emitting diode 133_6, and an optically coupled power. The crystal 133_7 and the comparison circuit 133_8. The input of the comparison circuit 133_1 is coupled to the intermediate circuit 132 to receive the internal signal Ssb'. The comparison circuit 133_1 compares the internal signal Ssb' with the reference voltage Vref3 to obtain a comparison result. The first end of the resistor 133_2 is coupled to the output of the comparison circuit 133_1 to receive the comparison result.
光耦合電晶體133_3的第一端(例如射極)耦接至電阻133_2的第二端。光耦合發光二極體133_4的陽極耦接至電壓源,例如耦接至輔助電源電路120以接收輔助電壓Vsb。光耦合發光二極體133_4所發出的光線可以被光耦合電晶體133_3的閘極所接收。電阻133_5的第一端耦接至光耦合發光二極體133_4的陰極。電阻133_5的第二端耦接至電源供應裝置100的保護偵測電路150,以接收故障信號FPO。A first end (eg, an emitter) of the optical coupling transistor 133_3 is coupled to a second end of the resistor 133_2. The anode of the light-coupled light-emitting diode 133_4 is coupled to a voltage source, for example, to the auxiliary power circuit 120 to receive the auxiliary voltage Vsb. The light emitted by the light-coupled light-emitting diode 133_4 can be received by the gate of the light-coupled transistor 133_3. The first end of the resistor 133_5 is coupled to the cathode of the light coupling LED 133_4. The second end of the resistor 133_5 is coupled to the protection detecting circuit 150 of the power supply device 100 to receive the fault signal FPO.
光耦合發光二極體133_6的陰極耦接至光耦合電晶體133_3的第二端(例如集極)。光耦合發光二極體133_6的陽極耦接至電壓源5V。光耦合電晶體133_7的閘極接收光耦合發光二極體133_6所發出的光線。光耦合電晶體133_7的第一端(例如集極)耦接至電壓源5V。比較電路133_8的第一輸入端耦接至光耦合電晶體133_7的第二端(例如射極)。比較電路133_8的第二輸入端耦接至電壓源Vref4。所電壓源Vref4的電壓準位可以依照設計需求來定。比較電路133_8的輸出端產生控制信號Ssb給輔助電源電路120。任何電壓比較電路/元件(例如習知電壓比較器或其他電壓比較器)皆可以用來實施比較電路133_8。The cathode of the light-coupled light-emitting diode 133_6 is coupled to the second end (eg, the collector) of the light-coupled transistor 133_3. The anode of the light-coupled light-emitting diode 133_6 is coupled to a voltage source 5V. The gate of the optical coupling transistor 133_7 receives the light emitted by the light-coupled light-emitting diode 133_6. The first end (eg, the collector) of the optical coupling transistor 133_7 is coupled to the voltage source 5V. The first input of the comparison circuit 133_8 is coupled to the second end (eg, the emitter) of the optical coupling transistor 133_7. The second input of the comparison circuit 133_8 is coupled to the voltage source Vref4. The voltage level of the voltage source Vref4 can be determined according to design requirements. The output of the comparison circuit 133_8 generates a control signal Ssb to the auxiliary power supply circuit 120. Any voltage comparison circuit/component (such as a conventional voltage comparator or other voltage comparator) can be used to implement the comparison circuit 133_8.
任何電壓比較電路/元件(例如習知電壓比較器或其他電壓比較器)皆可以用來實施比較電路133_1。舉例來說,在圖16所示實施例中,比較電路133_1包括參考電壓源1601、電阻1602、二極體1603以及比較器1604。參考電壓源1601可以提供參考電壓Vref3給比較器1604。任何參考電壓產生電路/元件(例如習知參考電壓源或其他參考電壓產生器)皆可以用來實施參考電壓源1601。電阻1602的第一端耦接至中間電路132,以接收內部信號Ssb’。二極體1603的陽極耦接至電阻1602的第一端。二極體的陰極耦接至電阻1602的第二端。比較器1604的第一輸入端(例如非反相輸入端)耦接至電阻1602的第二端。比較器1604的第二輸入端(例如反相輸入端)耦接至參考電壓源1601,以接收參考電壓Vref3。比較器1604的輸出端耦接至電阻133_2的第一端。Any voltage comparison circuit/component, such as a conventional voltage comparator or other voltage comparator, can be used to implement comparison circuit 133_1. For example, in the embodiment shown in FIG. 16, the comparison circuit 133_1 includes a reference voltage source 1601, a resistor 1602, a diode 1603, and a comparator 1604. The reference voltage source 1601 can provide a reference voltage Vref3 to the comparator 1604. Any reference voltage generating circuit/component, such as a conventional reference voltage source or other reference voltage generator, can be used to implement the reference voltage source 1601. The first end of the resistor 1602 is coupled to the intermediate circuit 132 to receive the internal signal Ssb'. The anode of the diode 1603 is coupled to the first end of the resistor 1602. The cathode of the diode is coupled to the second end of the resistor 1602. A first input (eg, a non-inverting input) of comparator 1604 is coupled to a second end of resistor 1602. A second input (eg, an inverting input) of the comparator 1604 is coupled to the reference voltage source 1601 to receive the reference voltage Vref3. The output of the comparator 1604 is coupled to the first end of the resistor 133_2.
依照設計需求,在圖16所示實施例中,輔助電源控制電路133還可以配置二極體133_9以及電阻133_10。二極體133_9的陽極耦接至啟動控制電路131的輸出端,以接收內部啟動信號PS’。電阻133_10的第一端耦接至二極體133_9的陰極。電阻133_10的第二端耦接至比較電路133_1的輸入端。在圖16所示實施例中,電阻133_10的第二端可以耦接至比較器1604的第一輸入端。According to the design requirements, in the embodiment shown in FIG. 16, the auxiliary power control circuit 133 can also configure the diode 133_9 and the resistor 133_10. The anode of the diode 133_9 is coupled to the output of the start control circuit 131 to receive the internal enable signal PS'. The first end of the resistor 133_10 is coupled to the cathode of the diode 133_9. The second end of the resistor 133_10 is coupled to the input end of the comparison circuit 133_1. In the embodiment shown in FIG. 16, the second end of the resistor 133_10 can be coupled to the first input of the comparator 1604.
圖17是依照本發明的一實施例說明圖1所示輔助電源電路120與圖10所示準位調整電路135的電路方塊示意圖。於圖17所示實施例中,輔助電源電路120包括電力轉換器121、電阻122以及電阻123。電力轉換器121可以進行電力轉換,以產生輔助電壓Vsb。依照設計需求,電力轉換器121可以是順向式電力轉換電路、反馳式電力轉換電路、主動箝位半橋式電力轉換電路、主動箝位全橋式電力轉換電路、推挽式電力轉換電路或是其他電力轉換電路。依照控制信號Ssb的控制,電力轉換器121可以決定是否停止驅動在電力轉換器121內部的功率電晶體,進而決定是否停止輸出輔助電壓Vsb。輔助電源電路120的回授電路包括電阻122以及電阻123。電阻122的第一端耦接至電力轉換器121的輸出端,以接收輔助電壓Vsb。電阻122的第二端耦接至回授分壓節點124。電阻123的第一端耦接至回授分壓節點124。電阻123的第二端耦接至參考電壓(例如接地電壓)。回授分壓節點124的電壓被回授至電力轉換器121。FIG. 17 is a block diagram showing the circuit of the auxiliary power supply circuit 120 of FIG. 1 and the level adjustment circuit 135 of FIG. 10 according to an embodiment of the invention. In the embodiment shown in FIG. 17, the auxiliary power supply circuit 120 includes a power converter 121, a resistor 122, and a resistor 123. The power converter 121 can perform power conversion to generate the auxiliary voltage Vsb. According to design requirements, the power converter 121 can be a forward power conversion circuit, a reverse power conversion circuit, an active clamp half bridge power conversion circuit, an active clamp full bridge power conversion circuit, and a push-pull power conversion circuit. Or other power conversion circuits. In accordance with the control of the control signal Ssb, the power converter 121 can determine whether to stop driving the power transistor inside the power converter 121, thereby determining whether to stop outputting the auxiliary voltage Vsb. The feedback circuit of the auxiliary power supply circuit 120 includes a resistor 122 and a resistor 123. The first end of the resistor 122 is coupled to the output of the power converter 121 to receive the auxiliary voltage Vsb. The second end of the resistor 122 is coupled to the feedback voltage dividing node 124. The first end of the resistor 123 is coupled to the feedback voltage dividing node 124. The second end of the resistor 123 is coupled to a reference voltage (eg, a ground voltage). The voltage of the feedback voltage dividing node 124 is fed back to the power converter 121.
圖17所示準位調整電路135可以參照圖10的相關說明。於圖17所示實施例中,準位調整電路135包括開關135_1以及電阻135_2。開關135_1的第一端(例如電晶體的源極或射極)耦接至參考電壓(例如接地電壓)。開關135_1的控制端(例如電晶體的閘極或基極)耦接至中間電路132,以接收內部信號Sref’。電阻135_2的第一端耦接至開關135_1的第二端(例如電晶體的汲極或集極)。電阻135_2的第二端耦接至輔助電源電路120內部的回授分壓節點124,以提供控制指令Sref。當開關135_1導通時,回授分壓節點124的電壓會被拉低,致使輔助電壓Vsb的準位會被抬升,例如從額定電壓Vsb_low拉升至額定電壓Vsb_high。當開關135_1截止時,回授分壓節點124的電壓會被拉高,致使輔助電壓Vsb的準位會被降低,例如從額定電壓Vsb_high拉降至額定電壓Vsb_low。電阻135_2、電阻122以及電阻123的阻值可以依照設計需求來決定。The level adjustment circuit 135 shown in FIG. 17 can refer to the related description of FIG. In the embodiment shown in FIG. 17, the level adjustment circuit 135 includes a switch 135_1 and a resistor 135_2. The first end of the switch 135_1 (eg, the source or emitter of the transistor) is coupled to a reference voltage (eg, a ground voltage). The control terminal of switch 135_1 (e.g., the gate or base of the transistor) is coupled to intermediate circuit 132 to receive internal signal Sref'. The first end of the resistor 135_2 is coupled to the second end of the switch 135_1 (eg, the drain or collector of the transistor). The second end of the resistor 135_2 is coupled to the feedback voltage dividing node 124 inside the auxiliary power circuit 120 to provide a control command Sref. When the switch 135_1 is turned on, the voltage of the feedback voltage dividing node 124 is pulled down, so that the level of the auxiliary voltage Vsb is raised, for example, from the rated voltage Vsb_low to the rated voltage Vsb_high. When the switch 135_1 is turned off, the voltage of the feedback voltage dividing node 124 is pulled high, so that the level of the auxiliary voltage Vsb is lowered, for example, from the rated voltage Vsb_high to the rated voltage Vsb_low. The resistance of the resistor 135_2, the resistor 122, and the resistor 123 can be determined according to design requirements.
圖18是依照本發明的另一實施例說明圖1所示輔助電源電路120與圖10所示準位調整電路135的電路方塊示意圖。圖18所示輔助電源電路120可以參照圖17的相關說明,故不再贅述。於圖18所示實施例中,準位調整電路135包括開關135_1、電阻135_2、二極體135_3、電阻135_4、電阻135_5、電阻135_6、二極體135_7以及二極體135_8。圖18所示開關135_1、電阻135_2可以參照圖17的相關說明,故不再贅述。FIG. 18 is a block diagram showing the circuit of the auxiliary power supply circuit 120 of FIG. 1 and the level adjustment circuit 135 of FIG. 10 according to another embodiment of the present invention. The auxiliary power supply circuit 120 shown in FIG. 18 can refer to the related description of FIG. 17, and therefore will not be described again. In the embodiment shown in FIG. 18, the level adjusting circuit 135 includes a switch 135_1, a resistor 135_2, a diode 135_3, a resistor 135_4, a resistor 135_5, a resistor 135_6, a diode 135_7, and a diode 135_8. The switch 135_1 and the resistor 135_2 shown in FIG. 18 can be referred to the related description of FIG. 17, and therefore will not be described again.
二極體135_3的陽極耦接至輔助電源電路120的輸出端,以接收輔助電壓Vsb。電阻135_4的第一端耦接至二極體135_3的陰極。電阻135_4的第二端耦接至中間電路132,以接收內部信號Sref’。電阻135_5的第一端耦接至中間電路132,以接收內部信號Sref’。電阻135_5的第二端耦接至開關135_1的控制端。電阻135_6的第一端耦接至電阻135_5的第二端。電阻135_6的第二端耦接至參考電壓(例如接地電壓)。The anode of the diode 135_3 is coupled to the output of the auxiliary power supply circuit 120 to receive the auxiliary voltage Vsb. The first end of the resistor 135_4 is coupled to the cathode of the diode 135_3. The second end of the resistor 135_4 is coupled to the intermediate circuit 132 to receive the internal signal Sref'. The first end of the resistor 135_5 is coupled to the intermediate circuit 132 to receive the internal signal Sref'. The second end of the resistor 135_5 is coupled to the control end of the switch 135_1. The first end of the resistor 135_6 is coupled to the second end of the resistor 135_5. The second end of the resistor 135_6 is coupled to a reference voltage (eg, a ground voltage).
二極體135_7的陽極耦接至啟動控制電路131的輸出端,以接收內部啟動信號PS’。二極體135_7的陰極耦接至開關135_1的控制端。因此當內部啟動信號PS’從低邏輯準位轉態為高邏輯準位時(表示電源供應裝置100的操作期間從正常供電期間切換至待機期間),內部啟動信號PS’可以即時地導通開關135_1,以便將輔助電壓Vsb的準位從額定電壓Vsb_low快速拉升至額定電壓Vsb_high。The anode of the diode 135_7 is coupled to the output of the start control circuit 131 to receive the internal enable signal PS'. The cathode of the diode 135_7 is coupled to the control terminal of the switch 135_1. Therefore, when the internal enable signal PS' transitions from the low logic level to the high logic level (indicating the period from the normal power supply period to the standby period during the operation of the power supply device 100), the internal enable signal PS' can turn on the switch 135_1 instantaneously. In order to quickly raise the level of the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high.
二極體135_8的陽極耦接至保護偵測電路150,以接收故障信號FPO。二極體135_8的陰極耦接至開關135_1的控制端。因此當主電源電路110發生故障事件時,故障信號FPO可以即時地導通開關135_1,以便將輔助電壓Vsb的準位從額定電壓Vsb_low快速拉升至額定電壓Vsb_high。The anode of the diode 135_8 is coupled to the protection detecting circuit 150 to receive the fault signal FPO. The cathode of the diode 135_8 is coupled to the control terminal of the switch 135_1. Therefore, when the main power circuit 110 has a fault event, the fault signal FPO can immediately turn on the switch 135_1 to quickly pull the level of the auxiliary voltage Vsb from the rated voltage Vsb_low to the rated voltage Vsb_high.
值得注意的是,在不同的應用情境中,控制電路130、啟動控制電路131、中間電路132、輔助電源控制電路133以及/或是開關控制電路134的相關功能可以利用一般的編程語言(programming languages,例如C或C++)、硬體描述語言(hardware description languages,例如Verilog HDL或VHDL)或其他合適的編程語言來實現為軟體、韌體或硬體。可執行所述相關功能的編程語言可以被佈置為任何已知的計算機可存取媒體(computer-accessible medias),例如磁帶(magnetic tapes)、半導體(semiconductors)記憶體、磁盤(magnetic disks)或光盤(compact disks,例如CD-ROM或DVD-ROM),或者可通過互聯網(Internet)、有線通信(wired communication)、無線通信(wireless communication)或其它通信介質傳送所述編程語言。所述編程語言可以被存放在計算機的可存取媒體中,以便於由計算機的處理器來存取/執行所述編程語言的編程碼(programming codes)。另外,本發明的裝置和方法可以通過硬體和軟體的組合來實現。It should be noted that in different application scenarios, the related functions of the control circuit 130, the startup control circuit 131, the intermediate circuit 132, the auxiliary power control circuit 133, and/or the switch control circuit 134 can utilize a general programming language (programming languages) , such as C or C++), hardware description languages (such as Verilog HDL or VHDL) or other suitable programming language to implement as software, firmware or hardware. The programming language that can perform the related functions can be arranged as any known computer-accessible media, such as magnetic tapes, semiconductors, magnetic disks, or optical disks. (compact disks, such as CD-ROM or DVD-ROM), or the programming language can be transmitted over the Internet, wired communication, wireless communication, or other communication medium. The programming language can be stored in an accessible medium of the computer such that the programming code of the programming language is accessed/executed by a processor of the computer. Additionally, the apparatus and method of the present invention can be implemented by a combination of hardware and software.
綜上所述,本發明諸實施例本發明的諸實施例所述電源供應裝置100與電源供應方法可以動態控制輔助電源電路120,以決定輔助電源電路120是否輸出輔助電壓。在正常供電期間(例如在ACPI標準的S0狀態),主電源電路110供應主電壓Vmain給第一路徑Pth1,主電源電路110經由開關電路140供應主電壓Vmain給第二路徑Pth2,以及輔助電源電路120停止輸出輔助電壓Vsb給第二路徑Pth2。因此在正常供電期間中,藉由停止輸出輔助電壓Vsb可以節省輔助電源電路120的功耗。在待機期間,輔助電源電路120恢復輸出輔助電壓Vsb給第二路徑Pth2,開關電路140被截止,以及主電源電路110停止供應主電壓Vmain。因此,不論是在待機期間或是在正常供電期間,電源供應裝置100都可以持續供電給第二負載LD2,以便讓第二負載LD2維持正常功能。In summary, the power supply device 100 and the power supply method of the embodiments of the present invention can dynamically control the auxiliary power supply circuit 120 to determine whether the auxiliary power supply circuit 120 outputs an auxiliary voltage. During normal power supply (eg, in the S0 state of the ACPI standard), the main power supply circuit 110 supplies the main voltage Vmain to the first path Pth1, the main power supply circuit 110 supplies the main voltage Vmain to the second path Pth2 via the switch circuit 140, and the auxiliary power supply circuit. 120 stops outputting the auxiliary voltage Vsb to the second path Pth2. Therefore, during the normal power supply period, the power consumption of the auxiliary power supply circuit 120 can be saved by stopping the output of the auxiliary voltage Vsb. During standby, the auxiliary power supply circuit 120 resumes outputting the auxiliary voltage Vsb to the second path Pth2, the switching circuit 140 is turned off, and the main power supply circuit 110 stops supplying the main voltage Vmain. Therefore, the power supply device 100 can continuously supply power to the second load LD2 during standby or during normal power supply to maintain the second load LD2 in a normal function.
雖然本發明已以實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明的精神和範圍內,當可作些許的更動與潤飾,故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
10‧‧‧電子裝置
100‧‧‧電源供應裝置
110‧‧‧主電源電路
120‧‧‧輔助電源電路
121‧‧‧電力轉換器
122‧‧‧電阻
123‧‧‧電阻
124‧‧‧回授分壓節點
130‧‧‧控制電路
131‧‧‧啟動控制電路
131_1‧‧‧運算放大器
131_2、131_4‧‧‧電阻
131_3‧‧‧二極體
131_5‧‧‧電容
131_6‧‧‧非反相放大器
132‧‧‧中間電路
132_1‧‧‧運算放大器
132_2‧‧‧電阻
132_3‧‧‧二極體
132_4‧‧‧比較電路
132_5‧‧‧電阻
132_6‧‧‧電容
133‧‧‧輔助電源控制電路
133_1‧‧‧比較電路
133_2‧‧‧電阻
133_3‧‧‧光耦合電晶體
133_4‧‧‧光耦合發光二極體
133_5‧‧‧電阻
133_6‧‧‧光耦合發光二極體
133_7‧‧‧光耦合電晶體
133_8‧‧‧比較電路
133_9‧‧‧二極體
133_10‧‧‧電阻
134‧‧‧開關控制電路
134_1‧‧‧二極體
134_2‧‧‧電阻
134_3‧‧‧比較電路
134_4‧‧‧電阻
134_6‧‧‧電容
135‧‧‧準位調整電路
135_1‧‧‧開關
135_2‧‧‧電阻
135_3‧‧‧二極體
135_4、135_5、135_6‧‧‧電阻
135_7、135_8‧‧‧二極體
136‧‧‧輸出電壓比較電路
136_1、136_2‧‧‧分壓電路
136_3‧‧‧比較器
136_4‧‧‧拉昇電阻
140‧‧‧開關電路
141、143‧‧‧電阻
142‧‧‧開關
150‧‧‧保護偵測電路
1401‧‧‧電阻
1402‧‧‧電容
1403‧‧‧參考電壓源
1404‧‧‧比較器
1501‧‧‧參考電壓源
1502‧‧‧比較器
1503‧‧‧電阻
1504‧‧‧二極體
1505‧‧‧拉昇電阻
1601‧‧‧參考電壓源
1602‧‧‧電阻
1603‧‧‧二極體
1604‧‧‧比較器
5V、12V‧‧‧電壓源
FPO‧‧‧故障信號
LD1‧‧‧第一負載
LD2‧‧‧第二負載
Pth1‧‧‧第一路徑
Pth2‧‧‧第二路徑
PS‧‧‧電源啟動信號
PS’‧‧‧內部啟動信號
R1、R2、R3、R4‧‧‧電阻
S210、S220、S310~S350、S410~S450、S610~S650‧‧‧步驟
Scmp‧‧‧比較結果
SR‧‧‧控制信號
SR’‧‧‧內部信號
Sref‧‧‧控制指令
Sref’‧‧‧內部信號
Ssb‧‧‧控制信號
Ssb’‧‧‧內部信號
Vmain‧‧‧主電壓
Vref1、Vref2、Vref3‧‧‧參考電壓
Vref4‧‧‧電壓源
Vsb‧‧‧輔助電壓10‧‧‧Electronic devices
100‧‧‧Power supply unit
110‧‧‧Main power circuit
120‧‧‧Auxiliary power circuit
121‧‧‧Power Converter
122‧‧‧resistance
123‧‧‧resistance
124‧‧‧Review of the pressure divider node
130‧‧‧Control circuit
131‧‧‧Start control circuit
131_1‧‧‧Operational Amplifier
131_2, 131_4‧‧‧ resistance
131_3‧‧‧ diode
131_5‧‧‧ capacitor
131_6‧‧‧Non-inverting amplifier
132‧‧‧Intermediate circuit
132_1‧‧‧Operational Amplifier
132_2‧‧‧resistance
132_3‧‧‧ diode
132_4‧‧‧Comparative circuit
132_5‧‧‧resistance
132_6‧‧‧ Capacitance
133‧‧‧Auxiliary power control circuit
133_1‧‧‧Comparative circuit
133_2‧‧‧resistance
133_3‧‧‧Optical coupling transistor
133_4‧‧‧Light-coupled light-emitting diode
133_5‧‧‧resistance
133_6‧‧‧Photocoupled Light Emitting Diodes
133_7‧‧‧Optical coupling transistor
133_8‧‧‧Comparative circuit
133_9‧‧ ‧ diode
133_10‧‧‧resistance
134‧‧‧Switch control circuit
134_1‧‧‧dipole
134_2‧‧‧resistance
134_3‧‧‧Comparative circuit
134_4‧‧‧resistance
134_6‧‧‧ capacitor
135‧‧ ‧ level adjustment circuit
135_1‧‧‧ switch
135_2‧‧‧resistance
135_3‧‧‧ diode
135_4, 135_5, 135_6‧‧‧ resistance
135_7, 135_8‧‧‧ diode
136‧‧‧Output voltage comparison circuit
136_1, 136_2‧‧‧ voltage divider circuit
136_3‧‧‧ comparator
136_4‧‧‧ Pull-up resistor
140‧‧‧Switch circuit
141, 143‧‧‧ resistance
142‧‧‧ switch
150‧‧‧Protection detection circuit
1401‧‧‧resistance
1402‧‧‧ Capacitance
1403‧‧‧reference voltage source
1404‧‧‧ comparator
1501‧‧‧reference voltage source
1502‧‧‧ comparator
1503‧‧‧resistance
1504‧‧ ‧ diode
1505‧‧‧ Pull-up resistor
1601‧‧‧reference voltage source
1602‧‧‧resistance
1603‧‧‧dipole
1604‧‧‧ Comparator
5V, 12V‧‧‧ voltage source
FPO‧‧‧ fault signal
LD1‧‧‧first load
LD2‧‧‧second load
Pth1‧‧‧ first path
Pth2‧‧‧Second path
PS‧‧‧Power start signal
PS'‧‧‧ internal start signal
R1, R2, R3, R4‧‧‧ resistance
S210, S220, S310~S350, S410~S450, S610~S650‧‧‧ steps
Scmp‧‧‧ comparison results
SR‧‧‧ control signal
SR'‧‧‧ internal signal
Sref‧‧‧ control instructions
Sref'‧‧‧ internal signal
Ssb‧‧‧ control signal
Ssb'‧‧‧ internal signal
Vmain‧‧‧main voltage
Vref1, Vref2, Vref3‧‧‧ reference voltage
Vref4‧‧‧ voltage source
Vsb‧‧‧Auxiliary voltage
圖1是依照本發明的一實施例的一種電源供應裝置的電路方塊(circuit block)示意圖。 圖2是依照本發明的一實施例的一種電源供應方法的流程示意圖。 圖3是依照本發明的一實施例說明圖1所示電源供應裝置在從待機期間切換至正常供電期間的流程示意圖。 圖4是依照本發明的一實施例說明當在正常供電期間中發生故障事件時,圖1所示電源供應裝置的流程示意圖。 圖5是依照本發明的另一實施例說明當在正常供電期間中發生故障事件時,圖1所示電源供應裝置的流程示意圖。 圖6是依照本發明的一實施例說明圖1所示電源供應裝置在從正常供電期間切換至待機期間的流程示意圖。 圖7是依照本發明的一實施例說明圖1所示開關電路的電路方塊示意圖。 圖8是依照本發明的另一實施例說明圖1所示開關電路的電路方塊示意圖。 圖9是依照本發明的又一實施例說明圖1所示開關電路的電路方塊示意圖。 圖10是依照本發明的一實施例說明圖1所示控制電路的電路方塊示意圖。 圖11是依照本發明的一實施例說明圖10所示輸出電壓比較電路的電路方塊示意圖。 圖12是依照本發明的一實施例說明圖10所示啟動控制電路的電路方塊示意圖。 圖13是依照本發明的另一實施例說明圖10所示啟動控制電路的電路方塊示意圖。 圖14是依照本發明的一實施例說明圖10所示中間電路的電路方塊示意圖。 圖15是依照本發明的一實施例說明圖10所示開關控制電路的電路方塊示意圖。 圖16是依照本發明的一實施例說明圖10所示輔助電源控制電路的電路方塊示意圖。 圖17是依照本發明的一實施例說明圖1所示輔助電源電路與圖10所示準位調整電路的電路方塊示意圖。 圖18是依照本發明的另一實施例說明圖1所示輔助電源電路與圖10所示準位調整電路的電路方塊示意圖。1 is a schematic diagram of a circuit block of a power supply device in accordance with an embodiment of the present invention. 2 is a flow chart showing a power supply method according to an embodiment of the invention. 3 is a flow chart showing the power supply device of FIG. 1 during a period of switching from standby to normal power supply, in accordance with an embodiment of the present invention. 4 is a flow chart showing the power supply device of FIG. 1 when a failure event occurs during a normal power supply period, in accordance with an embodiment of the present invention. FIG. 5 is a flow chart showing the power supply device of FIG. 1 when a failure event occurs during a normal power supply period in accordance with another embodiment of the present invention. FIG. 6 is a flow chart showing the power supply device of FIG. 1 during a period of switching from a normal power supply to a standby period according to an embodiment of the present invention. FIG. 7 is a block diagram showing the circuit of the switch circuit of FIG. 1 according to an embodiment of the invention. FIG. 8 is a block diagram showing the circuit of the switch circuit of FIG. 1 according to another embodiment of the present invention. FIG. 9 is a block diagram showing the circuit of the switch circuit of FIG. 1 according to still another embodiment of the present invention. FIG. 10 is a block diagram showing the circuit of the control circuit of FIG. 1 according to an embodiment of the invention. FIG. 11 is a block diagram showing the circuit of the output voltage comparison circuit shown in FIG. 10 according to an embodiment of the invention. FIG. 12 is a block diagram showing the circuit of the startup control circuit shown in FIG. 10 according to an embodiment of the invention. FIG. 13 is a block diagram showing the circuit of the startup control circuit shown in FIG. 10 according to another embodiment of the present invention. FIG. 14 is a block diagram showing the circuit of the intermediate circuit shown in FIG. 10 according to an embodiment of the invention. Figure 15 is a block diagram showing the circuit of the switch control circuit of Figure 10 in accordance with an embodiment of the present invention. FIG. 16 is a block diagram showing the circuit of the auxiliary power supply control circuit shown in FIG. 10 according to an embodiment of the invention. FIG. 17 is a block diagram showing the circuit of the auxiliary power supply circuit of FIG. 1 and the level adjustment circuit shown in FIG. 10 according to an embodiment of the invention. FIG. 18 is a block diagram showing the circuit of the auxiliary power supply circuit of FIG. 1 and the level adjusting circuit of FIG. 10 according to another embodiment of the present invention.
Claims (36)
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TW106114005A TWI619011B (en) | 2017-04-26 | 2017-04-26 | Power supply apparatus and power supply method |
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TW200737460A (en) * | 2006-03-30 | 2007-10-01 | Himax Tech Ltd | Power supply circuit applied in reduce swing differential signal receiver |
TWI337442B (en) * | 2006-03-31 | 2011-02-11 | Intel Corp | Apparatus, system and method for power management and machine-readable storage medium containing instructions |
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