200901607 九、發明說明： 【發明所屬之技術領域】 本發明係提供一種利用電壓控制器多工接腳來偵測輸入電壓 之電源轉換器，尤指一種透過調整耦接於電壓控制器之輸出接腳 的第一電子元件、第二電子元件來偵測輸入電壓之電源轉換器。 【先前技術】 電源轉換器（VoltageRegulator)可略分為切換式轉換器 (SwitchingRegUlator)與線性轉換器（LinerRegulat〇r)兩種。線 性轉換器速度較快，便於使用且價格便宜，但是效率很差，通常 會消耗掉观的神。*切赋賴n的效率軸較雜轉換器 高’但是設計上較複雜，且速度慢，容易衍生電磁干擾的問題。 一般來說，在使用線性電源轉換器時，需要兩組輸入電源， (Control Circuitry) (Control200901607 IX. Description of the Invention: [Technical Field] The present invention provides a power converter that utilizes a voltage controller multiplex pin to detect an input voltage, and more particularly, an output coupled to a voltage controller through adjustment The first electronic component of the foot and the second electronic component detect the input voltage of the power converter. [Prior Art] A voltage converter (Voltage Regulator) can be roughly divided into a switching converter (Switching RegUlator) and a linear converter (LinerRegulat〇r). Linear converters are faster, easier to use, and less expensive, but they are inefficient and often consume the god of view. * The efficiency axis of the cut-and-receive n is higher than that of the hybrid converter, but the design is more complicated and slow, and it is easy to derive electromagnetic interference. In general, when using a linear power converter, two sets of input power are required, (Control Circuitry) (Control
Voltage ’ VCNTL)，*另一組為提供電壓轉換的主要電源 age，ViN)。為了偵測這兩組輸入電源，往往需要使用另一個 接腳連接至主要電源來偵測主要電源的變化，社因兩組電源輸 入順序不同而造成朗上無法正常啟動（st_p)的問題。 4參考第1圖’第1圖為先前技術一電源轉換器1〇之示音圖。 電源轉換器1〇包含-電壓控制器11〇以及一功率輸出級⑵。電 壓控制器H0可分別透過-第一輪入接腳112、一第二輸入接腳 7 200901607 114、一第二輸入接腳ii6及一輸出接腳118，接收一回授訊號FB、 -輸入電麼Vw、-控制賴VCNTL，及輸出—驅動訊號DRV。 其中，輸入電壓VrN係由一電源供應器所產生，用來提供電源轉換 器10電壓轉換的主要電源，而控制電壓VCNTL係用來提供驅動 電壓控制器110的操作電源。電壓控制器則係根據回授訊號FB 產生驅動訊號DRV，其另包含—誤差放大n 13()以及_比較器 140。誤差放大器130可透過一第一輸入端132及一第二輸入端134 接收回授峨FB及-參考電壓Vref，從而根據比較回授訊號FB 與參考電壓Vre!^結果’由—麵端136輸出驅動訊號DRV。比 較器140包含一第一輸入端142、一第二輸入端144及一輸出端 146 ’第一輸入端M2耦接於兩電阻Ru、R22之接點，用來接收經 過兩電阻R„、R12分壓後之—電壓％ ;第二輸人端144用以接收 -第-臨界電壓VTH;輸出端146則用以輸出—比較結果來驅動電 源轉換器10。比較器14〇係用來比較電壓％與第一臨界電壓Vth 之電壓大小，其中，電壓v2可由下列公式得之： 明繼續參考第1圖。功率輸出級12〇包含一開關Q1、一第一 電阻Rl、—第二電阻&、—負載Load、-第-電容Cla及-第 :電合C2。開關Q】包含一控制端122、一第一端以及一第二 端126,控制端122係輕接於電愿控制器11〇之輸出接聊ιΐ8，用 來接收驅動訊號DRV;第—端124係用來接收輸入電壓〜，·第 200901607 =端係用來輪出_輸罐ν〇υτ。第—電阻㈣接於開卿之 第一知126與電壓控制器11〇之第一輸入獅ιΐ2之間， = R2:=聯的方式输於第-電阻Rl與-地端之間。輸出電 ⑽左過弟-電阻^與第二電阻心分壓之後產生回授訊號兕 至·控制器110之第一輸入接腳112。接著，頓控制器_ 據回授織FB產生鷄磁DRV，錢至關φ _其開啟及 關閉。最後’電源轉換器1〇透過功率輸出、級⑽（開關pi之開 啟及酬）將輸人電壓VlN轉換成輸出電壓％。㈣W祕 於開關Q1之第二端126與該地端之間’第一電容Q係输於開 關Q1之第一端m與該地端之間，而第二電容C2係姻於開關 Q1之第二端126與該地端之間。 由於成本的考量以及積體電路封裝接腳數目的限制，通常沒 有多餘的接腳來偵測輸入電壓VlN的電壓大小。請參考第2圖，第 2圖為先前技術一電源轉換器20之示意圖。電源轉換器2〇包含一 電壓控制姦210以及一功率輸出級220。請注意，功率輸出級220 與第1圖中的功率輸出級120中，同名元件係對應相同功能與相 同位置，於此不再重複敘述。電壓控制器21〇可透過一第一輸入 接腳212及一第二輸入接腳216接收回授訊號FB及控制電壓 VCNTL ’以根據回授訊號FB產生驅動訊號DRV，並透過一輸出 接腳218輸出驅動訊號DRV。電壓控制器210與第1圖中之電壓 控制器110類似’不同之處在於電壓控制器210沒有額外使用一 個接腳來偵測輸入電壓Vin的電壓大小。此外，電壓控制器21〇 9 200901607 亦包含-誤差放大器23〇,其功能及轉接方式與第1圖中的誤差放 大器130相同，係根據比較回授訊號FB與參考電壓的結果 來產生驅動訊號DRV。 由於電壓控制器2H)沒有額外使用—個接腳來_輸入電壓 Υγν的電壓大小，職出電壓Vqut的上升斜率不受㈣，無法提 供系統軟啟動（Soft Start)的功能。或者必需在輸入電源順序(〜體 細隱）上有特別要求，才能避免系統產生無法正常啟動的問 題。如此一來’會增加許多應用上的限制。 於上述的例子中，電壓控制器11G使用第二輸人接腳ιΐ4來 接收輸入縣ν^_其賴大小，如此—來，f源轉換器1〇 可提供纽軟啟_魏n频電軸餘_數目與成 本也相對地提高了。基於成本財量，賴控· 2ig捨棄使用 額外的接腳來彳貞測輸人電壓Vin㈣壓大小，但卻在朗上增加了 許多限制。 【發明内容】 因此’本發明之主要目的即在於提供一種利用電壓控制器輸 出接腳來_輸人電壓之電源雜^及其細電子裝置。 本發明揭露一種利用電屢控制器輸出接腳來偵測輸入霞之 電源轉換11。該電源轉換㈣以將―電源供應騎提供之-輸入 200901607 電_換成-輸出電壓，其包含―電壓控㈣…神輸出級以 及:電壓_電路。該電壓控制器包含—輸人接腳用以接收一回 授訊號’以及-多卫接_以輸出—驅動訊號，該電壓控制器係 根據，回授訊號產生該軸峨。該鲜輸出級係触於該電源 供應器與該賴控制器，絲根據該驅動訊號，將該輸入電壓轉 換成該輸出電壓，並產生朗授職電壓控㈣。該電壓偵 測電路係用來細該輸人電壓之賴大小，其包含—第一電子元 件、一第一電子元件以及一比較器。該第一電子元件係耦接於該 電源供應11與該賴控之多卫接腳之間。該第二電子元件係 執接於β亥電壓控制器之輸出接腳與一地端之間。當該電壓偵測電 路動作時’該控儀之多瑞腳不輸出該驅動訊號，並維持 岗阻抗;當該電壓控制器之多工接腳正常輸出該驅動訊號時，該電 壓偵測電路不動作。該比較器包含一第一輸入端耦接於該電壓控 制器之輸出接腳，用來接收與該輸入電壓相關的該輸入相關訊 號，一第二輸入端用來接收一臨界電壓，以及一輸出端用來輸出 一比較結果來驅動該電源轉換器。該比較器係用來比較該輸入相 關訊號與該臨界電壓之電壓大小。其中，該輸入相關訊號與該輸 入電壓之電壓大小可透過調整該第一電子元件、該第二電子元件 而得之。 於本發明之一實施例中，該電壓控制器係為一積體電路，而 該第二電子元件係設置於該積體電路之内部或者該積體電路之外 部。 200901607 於本發明之一實施例中，該第一電子元件係為一電阻。 於本發明之一實施例中，該第二電子元件係為—電阻。 於本發明之一實關巾，鄉二電子元件係為—電流源。 於本發明之-實施例中’該第比較器係為一電壓比較器或者一 電流比較器。 本發明揭露一種利用電壓控制器輸出接腳來偵測電壓之電子 裝置。該電子裝置包含-電壓控制器以及—電壓偵測電路。該電 壓控制器包含一輸入接腳用來接收一回授訊號，以及一多工接腳 用來輸出-驅動訊號。該電壓控制器係根據該回授訊號產生該驅 動訊號。該電㈣魏路係絲侧—電源供應騎提供之一輸 入電壓之賴大小，其包含―第—電子元件、—第二電子元件: 及-比較器。該第-電子元件係雛於該電源供應器與該電壓控 制器之多:L接腳之間。該第二電子元件係雛於該電壓控制器之 多工接腳與地之間。當該電壓偵測電路動作時，該電壓控制器之 多工接腳不輸^娜動訊號’並轉高阻抗;當該電麵制器之多 工接腳正常輸出娜動訊麟，該頓_電料動作。該比較 器包含一第一輪入端耦接於該電壓控制器之多工接腳，用來接收 與該輸入電壓相_該輸入相關訊號，—第二輸人端用來接收一 12 200901607 臨界電壓’以及-輸出端用來輪出一比較結杲來驅動該電子裝 置。该比較器係用來比較該輸入相關訊號與該臨界電壓之電壓大 小:其中’職入相關訊號與該輸入電壓之電壓大小可透過調整 該第一電子元件、該第二電子元件而得之。 ★於本發明之—實施射，該電馳制器係為—積體電路，而 該第二電子元件係設該频電路之_或者該雜電路 部。 於本發明之—實施例中，該第_電子元件係為一電阻。 於本發明之-實施例中，該第二電子元件係為一電阻。 於本發明之-實施财，該第二電子元件係為—電流源。 於本發明之-實施例中，該第比較器係為一電壓比較器或者一 電流比較器。 【實施方式】 ^參考第3圖，第3圖為本發明—第—實施例電源轉換器3〇 之示忍圖。電源轉換器30包含-電壓控制器31〇、一功率輪出級 320以及一電壓_電路380。功率輸出級32〇包含一開關心 -第-電阻R]、一第二電阻r2、_負载L〇ad、一第一電容。以 13 200901607 及-第-電奋c2。扭意’功率輸出級32Q與第丨圖中的功率輸 出級120中’同名树係對應相同功能與相同位置，於此不再重 複敘述。電源轉換器30可透過功率輸出級32〇 (開關切之開啟 及關閉）將輸入電壓V!n轉換成輸出電壓ν〇υτ。 電壓控制器310透過-第一輸入接腳312及一第二輸入接腳 316接收-回授訊號FB1及一控制電壓vcntl，以根據回授訊號 FBI產生-驅動訊號〇謂，並透過一多工接㈣8輸出驅動訊號 DRV1。其中’輸入電壓VlN係由一電源供應器所產生，用來提供 電源轉換器30電壓轉換的主要電源，而控制電壓VCNTL係用來 提供電壓控制1 310的操作電源。此外，電壓控制器31〇另包含 -誤差放大器330，用來根據比較回授訊號側與參考電鮮咖 的結果來產生驅動訊號DRV1。誤差放大器33()包含一第一輸入端 332、一第二輪入端334及一輸出端136，分別用來接收回授訊號 FB1、一參考電壓Vrefi，及輸出驅動訊號DRV卜 睛繼續參考第3圖。電壓偵測電路380包含一第一電子元件 R3、一第二電子元件350以及一比較器340。於本實施例中，第一 電子7G件&係為一電阻，而第二電子元件35〇係為一下拉式電流 源（Pull-low Current Source)，其提供一電流心。第一電子元件尺3 係耦接於s亥電源供應器（用以產生輸入電壓Vin)與電壓控制器 310之多工接腳318之間。第二電子元件35〇係耦接於電壓控制器 310之多工接腳318與一地端之間。比較器34〇用來比較一輸入相 200901607 關sfl號V"3與·- Sa界電愿Vthi之電堡大小’以產生一比較結果，其 包含一第一輸入端342、一第二輸入端344及一輸出端346，·第一 輸入端342耦接於電壓控制器310之多工接腳318，用來接收輸入 相關訊號V。第二輸入端344用來接收臨界電壓Vthi ;輸出端346 則用來輸出比較結果，以來驅動電源轉換器3〇。其中，電壓偵測 電路380係用來偵測輸入電壓VlN之電壓大小，而輸入相關訊號 V3係與輸入電M Vnvj相關，兩者之關係可由下列的公式得之： R3 X 工1。 因此’本發明可藉由調整第一電子元件心的電阻值與電流^ 來伯測輸入電壓之電壓大小，其偵測結果可用於開機重置侧 (P〇Wer-〇n Reset)，電壓控制g 310貝,河根據此侧結果判斷輸入 電壓VW達到臨界點的時間’進而決定開始軟啟動並產生輪出電壓 vOUT。請注意，當電壓债測電路38〇動作時，電壓控制器不 輸出驅動載DRV1，並_冑阻抗（HighImped_)，此時多 工接腳318的賴不受誤差放大器33〇的影響；當電壓控制器⑽ 正常輸出驅動訊號DRV1時，電壓谓測電路380不動作。再請注 思’當電壓制電路38〇動作時，電壓控制器训之多工接腳训 係用來接收輸人相關訊號v3，以偵測輸人電壓4之電壓大小； 而田電壓偵測電路380卜止動作時（此時電壓控制器31Q正 H)之多卫接腳318 _來論_號咖。 =實:例中，電壓控制器31〇之多工接腳318不 驅動訊號體丨至功钱出級32Q，而且可以絲偵測輸入電壓出 200901607Voltage ’ VCNTL), * The other group is the main power source that provides voltage conversion, ViN). In order to detect the two sets of input power, it is often necessary to use another pin to connect to the main power source to detect the change of the main power supply. The problem is that the two groups of power input sequences are different, which may cause the normal start (st_p). 4 Reference Fig. 1 is a diagram showing a prior art power converter 1 。. The power converter 1A includes a voltage controller 11A and a power output stage (2). The voltage controller H0 can receive a feedback signal FB, an input power through the first wheel input pin 112, a second input pin 7 200901607 114, a second input pin ii6 and an output pin 118, respectively. Vw, - control VCNTL, and output - drive signal DRV. The input voltage VrN is generated by a power supply for providing a main power supply for voltage conversion of the power converter 10, and the control voltage VCNTL is for supplying the operating power of the driving voltage controller 110. The voltage controller generates a driving signal DRV according to the feedback signal FB, which further includes an error amplification n 13 () and a comparator 140. The error amplifier 130 can receive the feedback FB and the reference voltage Vref through a first input terminal 132 and a second input terminal 134, so as to be outputted by the surface terminal 136 according to the comparison feedback signal FB and the reference voltage Vre! Drive signal DRV. The comparator 140 includes a first input terminal 142, a second input terminal 144, and an output terminal 146. The first input terminal M2 is coupled to the contacts of the two resistors Ru and R22 for receiving the two resistors R and R12. After the voltage division - voltage %; the second input terminal 144 is used to receive the -th threshold voltage VTH; the output terminal 146 is used to output - the comparison result to drive the power converter 10. The comparator 14 is used to compare the voltage % and the voltage of the first threshold voltage Vth, wherein the voltage v2 can be obtained by the following formula: Ming continued with reference to Figure 1. The power output stage 12A includes a switch Q1, a first resistor R1, a second resistor & - Load Load, - Cap-Cla and - Cap: C2. Switch Q] includes a control terminal 122, a first terminal and a second terminal 126. The control terminal 122 is lightly connected to the power controller 11. The output of 〇 接 ΐ , , is used to receive the drive signal DRV; the first end is used to receive the input voltage ~, · 200901607 = the end is used to turn out the _ cans ν 〇υ τ. The first knowledge of 126 is between 126 and the voltage controller 11〇, the first input lion ΐ2, = R2:= Between the first-resistor R1 and the ground terminal, the output power (10) is outputted by the left-to-resistance and the second resistor core to generate a feedback signal 兕 to the first input pin 112 of the controller 110. Then, the control is performed. _ According to the feedback weaving FB to generate chicken magnetic DRV, money to close φ _ its on and off. Finally 'power converter 1 〇 through the power output, level (10) (switch pi open and remuneration) will convert the input voltage VlN into Output voltage %. (4) W secret between the second end 126 of the switch Q1 and the ground terminal 'the first capacitor Q is transmitted between the first end m of the switch Q1 and the ground end, and the second capacitor C2 is married to Between the second end 126 of the switch Q1 and the ground end. Due to cost considerations and the limitation of the number of integrated circuit package pins, there is usually no extra pin to detect the voltage of the input voltage VlN. Please refer to FIG. 2 is a schematic diagram of a prior art power converter 20. The power converter 2A includes a voltage control 210 and a power output stage 220. Note that the power output stage 220 and the power output stage 120 of FIG. In the same name, the same name and the same position, no longer The voltage controller 21 receives the feedback signal FB and the control voltage VCNTL ' through a first input pin 212 and a second input pin 216 to generate a driving signal DRV according to the feedback signal FB, and transmits an output signal. The pin 218 outputs a driving signal DRV. The voltage controller 210 is similar to the voltage controller 110 in FIG. 1 'the difference is that the voltage controller 210 does not additionally use a pin to detect the voltage level of the input voltage Vin. The voltage controller 21〇9 200901607 also includes an error amplifier 23〇, which functions and switches in the same manner as the error amplifier 130 in FIG. 1 , and generates a driving signal DRV according to the result of comparing the feedback signal FB with the reference voltage. Since the voltage controller 2H) does not use an additional pin-to-input voltage Υγν voltage, the rising slope of the operating voltage Vqut is not (4), and the function of the system soft start (Soft Start) cannot be provided. Or you must have special requirements on the input power sequence (~ body blank) to avoid problems with the system that cannot start normally. As a result, it will increase many application restrictions. In the above example, the voltage controller 11G uses the second input pin ιΐ4 to receive the input ν^_ 其 size, so that the f source converter 1 〇 can provide the Nylon soft _ Wei n frequency electric axis The number of _ and the cost have also increased relatively. Based on the cost and cost, Lai Control·2ig abandoned the use of additional pins to measure the input voltage Vin (four) pressure, but added a lot of restrictions on the Lang. SUMMARY OF THE INVENTION Therefore, the main object of the present invention is to provide a power supply and its fine electronic device that use a voltage controller to output a pin to input a voltage. The invention discloses a power conversion 11 for detecting input Xia by using an output pin of an electric relay controller. The power conversion (4) is to supply the "power supply rider" - input 200901607 electric_replacement-output voltage, which includes "voltage control (four)... God output stage and: voltage_circuit. The voltage controller includes an input pin for receiving a feedback signal and a multi-guard_output-drive signal, and the voltage controller generates the axis according to the feedback signal. The fresh output stage is in contact with the power supply and the controller, and the wire converts the input voltage into the output voltage according to the driving signal, and generates a voltage control (4). The voltage detection circuit is used to reduce the size of the input voltage, and includes a first electronic component, a first electronic component, and a comparator. The first electronic component is coupled between the power supply 11 and the remote control pin. The second electronic component is connected between the output pin of the β-Hui voltage controller and a ground terminal. When the voltage detecting circuit operates, the controller does not output the driving signal and maintains the impedance; when the multiplexed pin of the voltage controller outputs the driving signal normally, the voltage detecting circuit does not action. The comparator includes a first input coupled to the output pin of the voltage controller for receiving the input related signal associated with the input voltage, a second input for receiving a threshold voltage, and an output The terminal is used to output a comparison result to drive the power converter. The comparator is used to compare the voltage of the input related signal with the threshold voltage. The voltage of the input correlation signal and the input voltage can be obtained by adjusting the first electronic component and the second electronic component. In an embodiment of the invention, the voltage controller is an integrated circuit, and the second electronic component is disposed inside the integrated circuit or outside the integrated circuit. In an embodiment of the invention, the first electronic component is a resistor. In an embodiment of the invention, the second electronic component is a resistor. In one of the inventions, the two electronic components are current sources. In the embodiment of the invention, the comparator is a voltage comparator or a current comparator. The present invention discloses an electronic device that uses a voltage controller output pin to detect a voltage. The electronic device includes a voltage controller and a voltage detection circuit. The voltage controller includes an input pin for receiving a feedback signal and a multiplex pin for outputting a drive signal. The voltage controller generates the driving signal according to the feedback signal. The electric (4) Weilu silk side-power supply ride provides one of the input voltages, which includes a "first" electronic component, a second electronic component: and a comparator. The first electronic component is between the power supply and the voltage controller: between the L pins. The second electronic component is nested between the multiplexed pin of the voltage controller and the ground. When the voltage detecting circuit operates, the multiplexed pin of the voltage controller does not lose the signal and turns to high impedance; when the multiplexed pin of the electric device is normally output, the mobile lining, the ton _Electric material action. The comparator includes a multiplexed pin coupled to the voltage controller at a first wheel end for receiving a signal associated with the input voltage, and the second input terminal is configured to receive a threshold of 12 200901607 The voltage 'and-output is used to rotate a comparison node to drive the electronic device. The comparator is configured to compare the voltage of the input related signal with the threshold voltage: wherein the magnitude of the voltage of the input signal and the input voltage can be obtained by adjusting the first electronic component and the second electronic component. In the present invention, the electric actuator is an integrated circuit, and the second electronic component is provided with the frequency circuit or the hybrid circuit portion. In an embodiment of the invention, the first electronic component is a resistor. In an embodiment of the invention, the second electronic component is a resistor. In the present invention, the second electronic component is a current source. In an embodiment of the invention, the comparator is a voltage comparator or a current comparator. [Embodiment] ^ Referring to Fig. 3, Fig. 3 is a diagram showing the power converter 3' of the present invention - the first embodiment. The power converter 30 includes a voltage controller 31A, a power wheel stage 320, and a voltage_circuit 380. The power output stage 32A includes a switch center - a first resistor R), a second resistor r2, a load L〇ad, and a first capacitor. Take 13 200901607 and - the first - electric fight c2. The twisted 'power output stage 32Q corresponds to the same function and the same position in the power output stage 120 in the power output stage 120 in the figure, and will not be repeated here. The power converter 30 converts the input voltage V!n into an output voltage ν 〇υ τ through the power output stage 32 〇 (switching on and off). The voltage controller 310 receives the feedback signal FB1 and a control voltage vcntl through the first input pin 312 and the second input pin 316 to generate a driving signal according to the feedback signal FBI, and through a multiplex Connect (4) 8 output drive signal DRV1. Wherein 'the input voltage VlN is generated by a power supply for providing the main power supply for the voltage conversion of the power converter 30, and the control voltage VCNTL is for supplying the operational power of the voltage control 1 310. In addition, the voltage controller 31 further includes an error amplifier 330 for generating the driving signal DRV1 based on the result of comparing the feedback signal side with the reference electric coffee. The error amplifier 33() includes a first input terminal 332, a second wheel-in terminal 334 and an output terminal 136 for receiving the feedback signal FB1, a reference voltage Vrefi, and the output driving signal DRV. 3 pictures. The voltage detecting circuit 380 includes a first electronic component R3, a second electronic component 350, and a comparator 340. In the present embodiment, the first electronic 7G device & is a resistor, and the second electronic component 35 is a pull-low current source, which provides a current center. The first electronic component ruler 3 is coupled between the power supply (to generate the input voltage Vin) and the multiplexer pin 318 of the voltage controller 310. The second electronic component 35 is coupled between the multiplex pin 318 of the voltage controller 310 and a ground terminal. The comparator 34〇 is used to compare an input phase 200901607, the sfl number V"3 and the -B Sai electric wish Vthi's electric castle size' to generate a comparison result, which includes a first input end 342 and a second input end. 344 and an output 346, the first input 342 is coupled to the multiplexer pin 318 of the voltage controller 310 for receiving the input related signal V. The second input 344 is used to receive the threshold voltage Vthi; the output 346 is used to output the comparison result, since the power converter 3 is driven. The voltage detecting circuit 380 is used to detect the voltage of the input voltage VlN, and the input related signal V3 is related to the input power M Vnvj . The relationship between the two can be obtained by the following formula: R3 X 1 . Therefore, the present invention can measure the voltage of the input voltage by adjusting the resistance value and current of the first electronic component, and the detection result can be used for the power-on reset side (P〇Wer-〇n Reset), voltage control g 310, the river judges the time when the input voltage VW reaches the critical point based on the result of this side, and then decides to start the soft start and generate the wheel-out voltage vOUT. Please note that when the voltage debt measuring circuit 38 is activated, the voltage controller does not output the driving load DRV1, and the _胄 impedance (HighImped_), at this time, the multiplex pin 318 is not affected by the error amplifier 33〇; When the controller (10) normally outputs the drive signal DRV1, the voltage counter circuit 380 does not operate. Please also note that when the voltage system is 38 〇, the voltage controller training multiplexer training is used to receive the input signal v3 to detect the voltage of the input voltage 4; When the circuit 380 stops operating (at this time, the voltage controller 31Q is H), the Guard pin 318 = Real: In the example, the voltage controller 31's multiplex pin 318 does not drive the signal body to the power level 32Q, and can detect the input voltage out. 200901607
Vin之電壓大小，係為一具有多工功能（MultipleFunction)之接腳。 在本發明中，比較器340為一電壓比較器，但並不侷限於此， 亦可為其他種類之比較器。而開關Q1可為金氧半電晶體 (Metal-Oxide Semiconductor Transistor ’ MOS )、雙接面電晶體 (Bipolar Junction Transistor，BJT)或是其他具相同功能之電子元 件。電壓控制器310係為一積體電路（Integrated Circuit，1C)，而 第一電子元件Rs係設置於電壓控制器310之外部，其電阻值大小 可由使用者自行調整；第二電子元件350係設置於電壓控制器31〇 之内4，其所&供之電流I】係為預先設定之值。因此，驅動訊號 DRV與輸入電壓VlN之電壓大小可透過調整第一電子元件& (調 整阻值）及第二電子耕35〇 (調整電流值）而得之'然而，上述 的實施例僅為絲制本發明之概念，而制本發明之實際應 用方式。此外，第二電子元件35G並不限定為—下拉式電流源， 亦可為電阻或是其他電子元件；且第二電子树35()亦可設置在 該積體電路之外部。 一第二實施例電源轉換器40The voltage of Vin is a pin with multiple functions (MultipleFunction). In the present invention, the comparator 340 is a voltage comparator, but is not limited thereto, and may be other types of comparators. The switch Q1 can be a Metal-Oxide Semiconductor Transistor (MOS), a Bipolar Junction Transistor (BJT) or other electronic components having the same function. The voltage controller 310 is an integrated circuit (1C), and the first electronic component Rs is disposed outside the voltage controller 310, and the resistance value can be adjusted by the user; the second electronic component 350 is set. Within the voltage controller 31, 4, the current I supplied is a preset value. Therefore, the magnitude of the voltage of the driving signal DRV and the input voltage V1N can be obtained by adjusting the first electronic component & (adjusting the resistance value) and the second electronic cultivating value (adjusting the current value). However, the above embodiment is only The concept of the invention is made by wire, and the practical application of the invention is made. In addition, the second electronic component 35G is not limited to a pull-down current source, and may be a resistor or other electronic component; and the second electronic tree 35() may be disposed outside the integrated circuit. A second embodiment power converter 40
述。兩者的不同之處在於電壓 件係為一電阻仏 請參考第4圖，第4圖為本發明一 之不意圖 壓偵測電ί 30類似， 電壓偵測電路480所使用之苐二電子元Said. The difference between the two is that the voltage component is a resistor. Please refer to FIG. 4, which is a schematic diagram of the second embodiment of the present invention, which is similar to the voltage detection circuit 480.
16 200901607 者之關係可由下列的公式得之 請注意，當電壓偵測電路彻 出驅動訊號DRV1，並維持言_丄f 1壓控制益410不輸 、间抗此時多工接腳的電壓不受誤# 放大器的影響；當電壓柃制 不又為差 f厭^ f輪出驅動訊號DRV1時， 電壓偵測電路480不動作。瓦社、士主 .丹明〉主思’當電壓偵測電路480動作 、：壓控制器彻之多工接腳係用_^^^ 偵測輸入電壓VlN之電壓大小；而當電壓制電路·停止動作時 此時電壓控制器410正常動作），電壓控制器·之多工接腳係 用來輸出驅動訊號DRV1。 請參考第5圖，第5圖為本發明一第三實施例電源轉換器％ 之示意圖。電源轉換器5〇之架構與第4圖的電源轉換⑽類似， 不同之處在於電1¾ R4(第二電子元件）係言文置於積體電路之外部， 則輸入電壓ViN與輸入相關訊號乂4之關係可由下列的公式得之： V4= R, + R,16 200901607 The relationship between the two can be obtained by the following formula. Please note that when the voltage detection circuit clears the drive signal DRV1, and maintains the pressure of the _ _f 1 pressure control benefit 410, the voltage of the multiplex pin is not Affected by the influence of the amplifier; when the voltage clamp is not the difference, the voltage detection circuit 480 does not operate when the drive signal DRV1 is turned off. Washe, the lord. Danming> the main thinking 'When the voltage detection circuit 480 action, the pressure controller is used to multiplex the _^^^ to detect the voltage of the input voltage VlN; and when the voltage system The voltage controller 410 is normally operated when the operation is stopped. The multiplexer pin of the voltage controller is used to output the drive signal DRV1. Please refer to FIG. 5, which is a schematic diagram of a power converter % according to a third embodiment of the present invention. The architecture of the power converter 5 is similar to the power conversion (10) of Fig. 4, except that the electrical signal is placed outside the integrated circuit, and the input voltage ViN is related to the input signal. The relationship of 4 can be obtained by the following formula: V4= R, + R,
Vm 於第4圖與第5圖中，輪入電壓ViN經過電阻反3與仏分壓後， 可得到輸入相關訊號V4。因此，可藉由調整心與心的電阻值來 调整輸入相關訊號V4，進而偵測輸入電壓VlN之電壓大小，其偵 測結果可用於偵測開機重置，而電壓控制器41〇可根據此偵測結 17 200901607 果判斷輸人電壓Vw達到臨界關時間，進而決定開始軟啟動並產 生輸出電壓VQUT。 明參考第6圖，第6圖為本發明一第四實施例電源轉換器6〇 之示意圖包含-電壓控制器⑽、一功率輸出級62〇以及一電 壓侧電路680。第6圖係為第3圖中電源轉換器30之變化實施 例，兩者不同之處在於電壓偵測電路68〇所使用的比較器64〇係 為一電流比較器。比較器640包含一第一輸入端642、一第二輸入 端644、及一輸出端646 ;第一輸入端642耦接於電壓控制器61〇 之多工接腳618，用來接收流入多工接腳618之電流Iseni ;第二 輸入端644絲接收-臨界電流lTm ;輸出端646帛來輸出一比較 結果來驅動f轉脑6Q。峨H _伽來比較電流18腿與臨 界電流ιΤΗ1之電流大小。透過調整電壓控制器61〇之多工接腳618 的輸入相關訊號％，使其接近電壓控制器610内部設定的電壓％ (A可以為ov)’則經由電阻&流入電壓控制器61〇之多工接腳 618的電流iSEN1可由下列的公式得之：Vm In Fig. 4 and Fig. 5, after the wheeling voltage ViN is divided by the resistors 3 and 仏, the input related signal V4 is obtained. Therefore, the input signal V4 can be adjusted by adjusting the resistance value of the heart and the heart, thereby detecting the voltage of the input voltage VlN, and the detection result can be used to detect the power-on reset, and the voltage controller 41 can Detecting junction 17 200901607 If it is determined that the input voltage Vw reaches the critical off time, it is decided to start the soft start and generate the output voltage VQUT. Referring to Fig. 6, a sixth diagram of a power converter 6A according to a fourth embodiment of the present invention includes a voltage controller (10), a power output stage 62A, and a voltage side circuit 680. Fig. 6 is a modified embodiment of the power converter 30 in Fig. 3, except that the comparator 64 used by the voltage detecting circuit 68 is a current comparator. The comparator 640 includes a first input end 642, a second input end 644, and an output end 646. The first input end 642 is coupled to the multiplexer pin 618 of the voltage controller 61 for receiving inflow multiplex The current of the pin 618 is Iseni; the second input 644 receives the -critical current lTm; the output 646 帛 outputs a comparison result to drive the f-brain 6Q.峨H _ gamma compares the current of the current 18 leg and the critical current ιΤΗ1. By adjusting the input related signal % of the multiplexer pin 618 of the voltage controller 61 to be close to the voltage % set in the voltage controller 610 (A can be ov), the voltage controller 61 flows into the voltage controller 61 via the resistor & The current iSEN1 of the multiplex pin 618 can be obtained by the following formula:
IsENl — ^ ~-5~ ° 因此’藉由調整R3的電阻值可得到電流Iseni，並利用上述的 公式來_輸人賴H壓大小，其_結果可驗侧開機 重置’而電壓控制器610可根據此偵測結果判斷輸入電壓Vin達到 臨界點的_，_決定壯倾触產生輸料壓v衝。請注 意，當電壓偵測電路680動作時，電壓控制器61〇不輸出驅動訊 18 200901607 號DRVl ’並維持高阻抗，此時多工接腳618的電壓不受誤差放大 器的影響；當電壓控制器⑽正常輸出驅動訊號DRV1時，電壓 偵測電路680不動作。再請注意，當電壓偵測電路_動作時& 電壓控制器61G之多ji接腳618係絲接收輸人相關訊號％，以 偵測輸入電壓之電壓大小；而當電壓價測電路_停止動作時 (此時電壓控制器⑽正常動作）’電壓控制器_之多工接腳⑽ 係用來輸出驅動訊號DRV1。 以上所述之實施例僅用來說明本發明之精神，並不触本發 明之齡。文中所提到的比較器可以是—電壓比較器或者一紐 比較器，但料侷祕此’亦可為其他_之比較器。開關以 為金氧半電晶體、-雙接面電晶體或其他電子元件。請注奇，第 二電子元件可以為一電阻或一電流源，亦可採用其他的電=元 件。此外’第二電子元件可設置在積體電路之⑽或者積體電路 之外部。文中所提到的電阻Rl、R2、R3、&並不限定於某一固定 數值，可視使用者需求而調整。同樣地，上述參考 合 界電壓vTH1、臨界f流“，並秘定於某1定缝，可視使 用者需求而調整。而上述的輸人相關訊號％、％可經由改變上述 的電阻R3、R4、臨界輕VTm、臨界電流ΙτΗι來調整。然而，上 述的實施例僅制來本發明之齡，而非_本發明^實際 應用方式，且其他顧皆應屬於本發明之涵蓋範圍。Χ …丁、 由上可知，本發明提供-種利用輕控制器多工接腳來偵測 19 200901607 輸入電壓之電源咖及其相關謂置 制器之多卫接腳不僅可用來輪出驅動訊號drvi ==控 而且可以用來偵測與輸入電壓〜相關之輸 ^^ 輸入電壓v…壓大小，係為-具有多工功能之接聊：Π 子元件與第二電子元件_於魏㈣電 R广的電阻值與電流。來偵測出輸入電 大= =結果可_測_置，電壓控制_ _判 Γ本㈣峨朗電源轉換11，賴可提供纽2 =t叫增加_____^的電 低，錄;電路封裝接腳的數目與成本可被降 以上所述僅為本發明之較佳實施例，凡依本發明申請專利範 圍所做之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖為先前技術一電源轉換器之示意圖。 第2圖為先前技術一電源轉換器之示意圖。 第3圖為本發明一第一實施例說明—電源轉換器之示音因。 第4圖為本發明一第二實施例說明—電源轉換器之示立圖。 第5圖為本發明一第三實施例說明—電源轉換 卜 π状意圖。 第6圖為本發明一第四實施例說明一電源轉換器之示立圖 20 200901607 114、216、316、618 116 電壓 輸入相關訊號 ν2Ύ5v3、v4 Vth ' Vthi Vref ' VRHfi Ii、IsENl 112、212、312 臨界電壓 參考電壓 電流 第一輸入接腳 第二輸入接腳 第三輸入接腳 【主要元件符號說明】 10、20、: 30、40、50、60 電源轉換器 110、210 、310、410、610 電壓控制器 120 、 220 、320、420、620 功率輸出級 380、480 電壓偵測電路 Q1 開關 Load 負載 122 控制端 124 第一端 126 第二端 Ri 第一電阻 r2 第二電阻 Ci 第一電容 c2 第二電容 ViN 輸入電壓 V〇UT 輸出電壓 VCNTL 控制電壓 118、218 輸出接腳 21 200901607 318 、 618 多工接腳 DRV、DRV1 驅動訊號 FB、FBI 回授訊號 Rn ' R12 ' R4 電阻 r3 第一電子元件 350 第二電子元件 130、230、330 誤差放大器 140、340、640 比較器 第一輸入端 第-一輸入端 輸出端 132、142、332、342、642 134、144、334、344、644 136、146、336、346、646IsENl — ^ ~-5~ ° Therefore, by adjusting the resistance value of R3, the current Iseni can be obtained, and the above formula is used to calculate the magnitude of the H voltage, and the result can be verified by the power-on reset and the voltage controller According to the detection result, the 610 can determine that the input voltage Vin reaches the critical point _, and _ determines the strong touch to generate the feed pressure v. Please note that when the voltage detecting circuit 680 is activated, the voltage controller 61 does not output the driving signal 18 200901607 DRV1 ' and maintains high impedance, at which time the voltage of the multiplex pin 618 is not affected by the error amplifier; when the voltage is controlled When the device (10) normally outputs the driving signal DRV1, the voltage detecting circuit 680 does not operate. Please note that when the voltage detection circuit _ action & voltage controller 61G ji pin 618 wire receives the input signal related % to detect the voltage of the input voltage; and when the voltage price measurement circuit _ stop During operation (when the voltage controller (10) is operating normally), the multiplexer pin (10) of the voltage controller is used to output the drive signal DRV1. The embodiments described above are only intended to illustrate the spirit of the invention and not to the extent of the invention. The comparator mentioned in the text can be a voltage comparator or a comparator, but it can be a comparator of other _. The switch is a gold oxide semi-transistor, a double junction transistor or other electronic component. Please note that the second electronic component can be a resistor or a current source, or other electrical components can be used. Further, the 'second electronic component' may be disposed outside the integrated circuit (10) or the integrated circuit. The resistors R1, R2, R3, & mentioned in the text are not limited to a fixed value and can be adjusted according to user requirements. Similarly, the above reference junction voltage vTH1, critical f stream ", and secretly determined in a certain slit, can be adjusted according to user needs. The above-mentioned input related signals %, % can be changed by changing the above resistors R3, R4 The critical light VTm and the critical current ΙτΗι are adjusted. However, the above embodiments are only for the age of the present invention, and not the actual application mode of the present invention, and other considerations are within the scope of the present invention. As can be seen from the above, the present invention provides a multi-processor pin that utilizes a light controller multiplex pin to detect 19 200901607 input voltage and its associated pre-processor can be used not only to rotate the drive signal drvi == Control and can be used to detect the input voltage v...voltage related to the input voltage~, is the multiplexed function: Π sub-element and second electronic component _ Yu Wei (four) electric R wide Resistance value and current. To detect the input power == result can be _ test _ set, voltage control _ _ Γ Γ (4) 峨 电源 power conversion 11, Lai can provide New 2 = t call increase _____ ^ low Record; the number and cost of circuit package pins can be reduced The present invention is intended to be a preferred embodiment of the present invention, and all changes and modifications made to the scope of the present invention should be covered by the present invention. [FIG. 1] FIG. 2 is a schematic diagram of a power converter of the prior art. FIG. 3 is a diagram showing a sound source of a power converter according to a first embodiment of the present invention. FIG. 4 is a second embodiment of the present invention. - Figure 5 is a diagram of a power converter. Figure 5 is a third embodiment of the present invention - power conversion π-like intention. Figure 6 is a fourth embodiment of the present invention to illustrate a power converter diagram 20 200901607 114,216,316,618 116 Voltage input related signals ν2Ύ5v3, v4 Vth ' Vthi Vref ' VRHfi Ii, IsENl 112, 212, 312 threshold voltage reference voltage current first input pin second input pin third input pin [Main component symbol description] 10, 20,: 30, 40, 50, 60 power converter 110, 210, 310, 410, 610 voltage controller 120, 220, 320, 420, 620 power output stage 380, 480 Detection circuit Q1 Switch Load 122 Control terminal 124 First terminal 126 Second terminal Ri First resistor r2 Second resistor Ci First capacitor c2 Second capacitor ViN Input voltage V〇UT Output voltage VCNTL Control voltage 118, 218 Output Foot 21 200901607 318, 618 multiplexed pin DRV, DRV1 drive signal FB, FBI feedback signal Rn ' R12 ' R4 resistor r3 first electronic component 350 second electronic component 130, 230, 330 error amplifier 140, 340, 640 comparison First input end of the first input end 132, 142, 332, 342, 642 134, 144, 334, 344, 644 136, 146, 336, 346, 646