200826451 ， 九、發明說明： 【發明所屬之技術領域】 本lx月係有關於直流_直流轉換器電路，尤其是有關 於使用單一電感為而提供複數個正電壓及/或負電壓的直 流-直流轉換器電路。 、 【先前技術】 、在膝上型電腦、行動電話、LCD裝置、計算機等電 :驅動型電子裝置中，必須將供給電源至裝置之電池的 迅壓交換成裝置之電路適用的電M。用力電壓變換之直 流-直流轉換器係有各式各樣的種類。 在直流-直流轉換器之中，由於使用電感器之直流一 直流轉換器具有可以在高效率下輸出種種電壓之特性的 、=:，可以廣泛地使用。在使用電感器之直流_直流 、-中Μ往為了得到複數個同極性電壓，所以採用 ::丨地侍到各電壓之方法，如下：”以直流·直流轉換器 :到糸統内之最高電壓後，以LD〇調整 得到所欲之低電壓；或2)設置與系統内所使用之電 壓的個數相同之直流_直流轉換器。 [特許文獻1] 特開2006_254700號公報。 【發明内容】200826451, Nine, invention description: [Technical field of invention] This lx month system has a DC-DC converter circuit, especially for DC-DC which provides a plurality of positive voltages and/or negative voltages by using a single inductor. Converter circuit. [Prior Art] In a laptop computer, a mobile phone, an LCD device, a computer, etc.: In a drive type electronic device, the power supply to the battery of the device must be exchanged for the power M of the circuit of the device. There are a wide variety of DC-DC converters that use force voltage conversion. Among the DC-DC converters, the DC-DC converter using an inductor has a characteristic that it can output various voltages at high efficiency, and can be widely used. In the DC dc and dc of the inductor, in order to obtain a plurality of voltages of the same polarity, the method of: 丨 侍 侍 各 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍 侍After the voltage, the desired low voltage is obtained by LD ; adjustment; or 2) a DC-DC converter having the same number of voltages as used in the system is provided. [Patent Document 1] JP-A-2006-254700. 】
仁疋，在上述1)之方法中，由於在調整哭產生之 力損耗是不可㈣之故，因此導致電力效率低下。另外 0773-A33104TWF;KB06010;forever769 7 200826451 在上述2)之方法中，雖然1)之電力效率之低下的問題減 輕了，但是由於使用複數個電感器之故，所以成本提高。 本發明之目的在於藉由使用單一電感器而提供一種 具有以高效率供給複數個正電壓及/或負電壓之機能的低 成本直流-直流轉換器電路。 [課題解決之手段] 由於本發明之直流-直流轉換器具有以下之構成，因 此可以藉由使用單一轉換器而得到複數個正電壓及/或負 電壓。另外，藉由將本發明之構成之直流-直流轉換器用 於平面顯示器（尤其是，液晶顯示裝置（LCD))，可以謀 求LCD等之低價格化。 (1) 一種直流-直流轉換器電路，包括：至少1個電 感器；至少1個N型MOSFET; η個整流二極體；n-1個 P型MOSFET ; η個紋波除去用電容器；η個控制電路； 以及η個輸出端子；其中，η係顯示2以上之整數；前述 電感器之第1端子係與直流電源端子連接；前述電感器 之第2端子係與Ν型MOSFET之汲極端子連接；前述η 個整流二極體中之第1整流二極體之陰極係與前述紋波 除去用電容器中之第1電容器及前述η個輸出端子中之 第1輸出端子連接；前述NS MOSFET之源極端子係與 接地（GND)端子連接；前述η個整流二極體之陽極端 子之全部係與前述電感器之第2端子連接；前述η個整 流二極體中之第1整流二極體以外之η-1個整流二極體之 陰極端子係分別與各個前述η-1個Ρ型MOSFET之源極 0773-A3 3104TWF;KB06010;forever769 8 200826451 ϋΓ1個p型M0贿之各個沒極端子係 ^ 包合态以外之n-1個紋波除去用電容界及前 =出，子以外之，出端子分別連接二^ 端子電壓為電源之n個中之1個控制電路之浐出 =係與前述N3iM0SFET1極端子連接 述第1輸出踹早夕牡共以則 子連接的吉力古电為电 -1個控制電路之輸出端 端子之轉換器電路中，藉由使前述第1輸出 之-二:父/、它輪出端子電麗高且前述η個輪出端子 迅土凡王相異的方式控制前述11-1個ρ型M〇Sfet 各個閑極端子，而輸出η個相異之直流電屢。 、、（2)如（1)所述之直流-直流轉換器電路，i 波除去用電容器之電力供給係分別以時分割^ 丄）、如（1)或（2)所述之直流-直流轉換器電路， 八中岫述η為2，輸出2個相異之直流電壓。 命路H(υ至（3)中任一所述之直流-直流轉換器 电路’更已括.弟2之ρ型M0SFET，連接於前述直、ά :源端子與前述電感器之第！端子之間；㈤個整流二： 體，m-1個Ν型M0SFET ; m個紋波除去用電容器；… 個控制電路；以及m個輸出端子；其中，m表示2以上 之整數；前述m個二極體之整流二極體中之第】整流一 極體之陽極係與前述m個紋波除去用電容器中之第1㊉ 容器及前述m個輸出端子中之第i輸出端子連接，·前、： m個整流二極體之陰極端子之全部係與前述電感器之= 0773-A33104TWF;KB06010;forever769 200826451 1端子連接；前述m個二極體中之第1二極體以外之m-l 個整流用二極體之陽極端子係分別與其它前述m-1個N 型MOSFET之源極端子連接；前述m-1個N型MOSFET 之各個汲極端子係與前述第1電容器以外之m-1個紋波 除去用電容器及前述第1輸出端子以外之m-1個輸出端 子分別連接；前述m-1個N型MOSFET之各個閘極端子 係與以前述第1輸出端子之電壓為電源之m-1個控制電 路之輸出端子分別連接，並受到控制而使得前述第1輸 出端子之電壓較其它m-1個輸出端子之電壓高且前述m 個輸出端子之電壓完全相異，以進一步輸出m個相異之 負的直流電壓。 (5) —種直流-直流轉換器電路，包括：1個電感器； 至少1個P型MOSFET ; m個整流二極體；m-Ι個N型 MOSFET ; m個紋波除去用電容器；m個控制電路；以及 m個輸出端子；其中，η係表示2以上之整數；前述P 型MOSFET之源極端子係與直流電源端子連接；前述電 感器之第1端子係與前述P型MOSFET之汲極端子連 接；前述電感器之第2端子係與接地（GND)連接；前 述m個整流二極體中之第1整流二極體之陽極係與前述 紋波除去用電容器中之第1電容器及前述m個輸出端子 中之第1輸出端子連接；前述m個整流二極體之陰極端 子之全部係與前述電感器之第1端子連接；前述m個整 流二極體中之第1整流二極體以外之m-Ι個整流二極體 之陽極端子係分別與其它前述m-Ι個N型MOSFET之源 0773-A33104TWF;KB06010;forever769 10 200826451 極端子連接；前述m-l個N型MOSFET之各個a 係與前述第1電 & jSFET之各個没極端子 前述第1輪出端+ Z m- I紋波除去用電容器及 箱子以外之^個輪出端子分別 月=μ電源端子電屡為電源之 之輸出端子係鱼乂、+、Ώ丨 丨口 個控制電路 與以前述第；輸之閘極端子連接;在 之輸出端早’、^子电廢為電源之m-1個控制電路 义 刀另，連接的直流-直流轉換器電路中，_由# 别述第1輪出端子之電壓較其它輸^猎^吏 m個輸㈣h、匕翻&子電⑸且前述 型MOSFET之夂电【凡王相異的方式控制前述1™個N 屋。 之口個閘極端子，而輸出m個相異之直流電 豆士 （4)或（5)所述之直流-直流轉換器電路， 二時=^?進7去用電容器之負電叙供給係分別 (7) —種平面顯示器，使用如 1)至（6)中任一 所述之直流-直流轉換器電路 [發明之效果j >本發明可以藉由使用單—電感ϋ轉供-種具有以 Γ亩tt給複數個正㈣及/或1㈣之機能的低成本直 奥益電路。另夕卜，藉由將本發明之構成之直流_ 二轉換為用於平面顯示器（尤其是，液晶顯示裝置 ，可以謀求LCD等之低價格化。 為讓本發明之上述和其他目的、特徵、和優點能更 明顯易'll ’下文特舉出較佳實施例，並配合所附圖式， 0773-A33104TWF;KB0601 〇;forever769 11 200826451 作詳細說明如下： 【實施方式】 藉由以下之實施例而詳細說明本發明之直流_直流 轉換态之具體例。本發明係不限定此些實施例。 [實施例1]Ren Yan, in the method of the above 1), the power loss due to the adjustment of the crying force is not (4), resulting in low power efficiency. Further, 0773-A33104TWF; KB06010; forever769 7 200826451 In the method of the above 2), although the problem of low power efficiency of 1) is reduced, since a plurality of inductors are used, the cost is increased. SUMMARY OF THE INVENTION An object of the present invention is to provide a low cost DC-DC converter circuit having a function of supplying a plurality of positive voltages and/or negative voltages with high efficiency by using a single inductor. [Means for Solving the Problem] Since the DC-DC converter of the present invention has the following configuration, a plurality of positive voltages and/or negative voltages can be obtained by using a single converter. Further, by using a DC-DC converter having the configuration of the present invention for a flat panel display (particularly, a liquid crystal display (LCD)), it is possible to reduce the cost of the LCD or the like. (1) A DC-DC converter circuit comprising: at least one inductor; at least one N-type MOSFET; n rectifying diodes; n-1 P-type MOSFETs; η ripple-removing capacitors; And a plurality of output terminals; wherein the η system displays an integer of 2 or more; the first terminal of the inductor is connected to the DC power supply terminal; and the second terminal of the inductor is connected to the 汲 terminal of the MOSFET Connecting; a cathode of the first rectifying diode of the n-rectifying diodes is connected to a first one of the first capacitor and the n-th output terminals of the ripple removing capacitor; and the NS MOSFET The source terminal is connected to the ground (GND) terminal; all of the anode terminals of the n rectifier diodes are connected to the second terminal of the inductor; and the first rectifier diode of the n rectifier diodes The cathode terminals of the other η-1 rectifier diodes are respectively associated with the source of each of the aforementioned η-1 Ρ-type MOSFETs 0773-A3 3104TWF; KB06010; forever769 8 200826451 ϋΓ1 p-type M0 bribes are not extreme sub-systems ^ n-1 ripples except for the inclusion state The output of the control circuit is connected to the terminal of the power supply, and the output terminal is connected to the terminal of the N3iM0SFET1 terminal. The first output is the first output. In the converter circuit of the output terminal of the electric-1 control circuit, the first output of the first output is -2: parent /, and its terminal is electrically high and the aforementioned η The wheel-exit terminals are in a different way to control the above 11-1 p-type M〇Sfet idle terminals, and output n different DC currents. (2) The DC-DC converter circuit according to (1), wherein the power supply system of the i-wave removing capacitor is separately divided by time, and the DC-DC is as described in (1) or (2). The converter circuit, VIII is η is 2, and outputs two different DC voltages. The life-path H (the DC-DC converter circuit of any one of the above (3) is further included. The p-type MOSFET of the second type is connected to the above-mentioned direct and ά: source terminal and the first terminal of the inductor; (5) rectification two: body, m-1 Ν type MOSFET; m ripple removal capacitors; ... control circuit; and m output terminals; wherein m represents an integer greater than 2; The anode of the rectifying one of the rectifying diodes of the polar body is connected to the first tenth of the m ripple removing capacitors and the i th output terminal of the m output terminals, before: The cathode terminals of the m rectifier diodes are all connected to the inductor = 0773-A33104TWF; KB06010; forever769 200826451 1 terminal; the first of the m diodes is the first rectifier diode The anode terminal of the polar body is respectively connected to the source terminals of the other m-1 N-type MOSFETs; the m-th ripple of each of the m-1 N-type MOSFETs and the m-1 ripple other than the first capacitor The removal capacitor and the m-1 output terminals other than the first output terminal are respectively connected; Each of the gate terminals of the m-1 N-type MOSFETs is respectively connected to the output terminals of the m-1 control circuits that are powered by the voltage of the first output terminal, and is controlled so that the voltage of the first output terminal is compared The voltages of the other m-1 output terminals are high and the voltages of the m output terminals are completely different to further output m different negative DC voltages. (5) A DC-DC converter circuit, including: 1 Inductors; at least one P-type MOSFET; m rectifying diodes; m-Ι N-type MOSFETs; m ripple removing capacitors; m control circuits; and m output terminals; An integer of 2 or more; a source terminal of the P-type MOSFET is connected to a DC power supply terminal; a first terminal of the inductor is connected to a first terminal of the P-type MOSFET; and a second terminal of the inductor is grounded ( GND) connection; the anode of the first rectifying diode of the m rectifier diodes is connected to the first capacitor of the ripple removing capacitor and the first output terminal of the m output terminals; Cathode terminals of rectifier diodes All of the electrodes are connected to the first terminal of the inductor; and the anode terminals of the m-th rectifier diodes other than the first rectifier diode of the m rectifier diodes are respectively connected to the other m-ΙN Type MOSFET source 0773-A33104TWF; KB06010; forever769 10 200826451 Extreme sub-connection; each of the above-mentioned ml N-type MOSFETs and the aforementioned first electric & jSFET have no terminals, the aforementioned first round end + Z m- I ripple removal capacitors and the other rounds of the terminals except the box respectively = μ power supply terminal is the output terminal of the power supply, the control terminal is the fish, the +, the control circuit and the above; Extreme sub-connection; at the output end of the early ', ^ sub-electric waste for the power supply m-1 control circuit knives, in the connected DC-DC converter circuit, _ by # 述 第 第 第 第 第Compared with other transmissions, the above-mentioned 1TM N houses are controlled in the same way as the other types of MOSFETs. The mouth of the gate, and output m different DC electric bean (4) or (5) the DC-DC converter circuit, the second time = ^? into the 7 to use the negative supply of the capacitor (7) A flat panel display using the DC-DC converter circuit according to any one of 1) to (6) [Effect of the Invention j > The present invention can be provided by using a single-inductive turn-by-turn type A low-cost direct Aoyi circuit with a number of positive (four) and/or one (four) functions. In addition, by converting the DC_2 of the present invention into a flat panel display (in particular, a liquid crystal display device, it is possible to reduce the price of the LCD or the like. To achieve the above and other objects, features, and features of the present invention, And the advantages can be more obvious. The preferred embodiment is exemplified below, and is described in detail with reference to the drawings, 0773-A33104TWF; KB0601 〇; forever769 11 200826451 as follows: [Embodiment] By the following embodiments Specific examples of the DC-DC conversion state of the present invention will be described in detail. The present invention is not limited to such embodiments. [Embodiment 1]
圖1係繪示本發明之實施例1之直流_直流轉換器的 電路圖。如圖1所示，實施例丨之直流-直流轉換器係由 與直流電源11連接之電感器12、開關MOSFET 31、32、 整流用蕭特基阻障二極體（Schottky barder di〇de) 4丨、4 2、輸出電壓波紋減低用電容器6卜62、用於控制前述開 關MOSFET之控制電路5卜52、輸出電壓誤差放大器（圖 未顯示）、及輸出端子21、22所構成。 _根據上述電路構成的話，可以使用單—電感器而由 單一直流電源得到複數個正電壓。 此直流-直流轉換器電路係從直流電源' u以時分判 的方式將電力供給交互地輸出之輸出端子21、22，此時， 目標值而言為電壓不足的情況下，來 二=2 1，信號(圖未顯示)傳達至前述控制電 之h τ 電力。另外，在輪出電壓超過目標值 之It况下，猎由來自誤差放大器之杵 MOSFET之驅動停止。 工制心號而開關 針對各另卜由於上述電壓控制操作係 僅:之故，一 、輸出電反之本電路的控制要求 0773-A33104TWF;KB06010；f〇rever769 12 200826451 係假下列4種狀態：υ向輸出端 僅向輸出端子21供给電力、岔 供給電力、2) 力、力供給停: )僅向輪出端子22供給電 在此，】）在向輸出端子21、2 首先，在控制電路52之輸出成力之情況下’ MOSFET32關閉之狀能為呵」位準且P型 _閉之狀恶，控制電路51 位準且N型M0SFET 31開啟，而，出成為/」 之兩端。電感器12之電流士 ^口於電感盎12 , 糸隧日才間而成比例增加，之後， 閉:==51輸出「低」位準而ΜΜ_τ3ΐ ，閉之故’因此電感器12之電流停止增加。Fig. 1 is a circuit diagram showing a DC-DC converter of Embodiment 1 of the present invention. As shown in FIG. 1, the DC-DC converter of the embodiment is composed of an inductor 12 connected to a DC power source 11, a switching MOSFET 31, 32, and a Schottky barrier diode for rectification (Schottky barder di〇de). 4丨, 4 2. The output voltage ripple reduction capacitor 6 62, the control circuit 5 for controlling the switching MOSFET, the output voltage error amplifier (not shown), and the output terminals 21 and 22. _According to the above circuit configuration, a single positive voltage can be obtained from a single DC power supply using a single inductor. The DC-DC converter circuit supplies power to the output terminals 21 and 22 that are alternately outputted from the DC power source in a time-division manner. In this case, if the target value is insufficient voltage, the second=2 1. The signal (not shown) is communicated to the aforementioned control power h τ power. In addition, in the case of the Iterated voltage exceeding the target value, the hunting is stopped by the driving of the MOSFET from the error amplifier. Due to the above-mentioned voltage control operation system only, the output voltage is reversed to the control requirement of the circuit 0773-A33104TWF; KB06010; f〇rever769 12 200826451 is the following four states: Only the electric power is supplied to the output terminal 21, the electric power is supplied to the output terminal, 2) the force and the power supply are stopped:) the electric power is supplied only to the wheel-out terminal 22, and the current is supplied to the output terminals 21 and 2, first in the control circuit 52. In the case of the output force, the MOSFET 32 can be turned off and the P-type is closed. The control circuit 51 is level and the N-type MOSFET 31 is turned on, and the output becomes /". The current of the inductor 12 is proportional to the inductance of the inductor 12, and then increases proportionally. After that, the closed: == 51 outputs the "low" level and ΜΜ _τ3 ΐ, which is closed, so the current of the inductor 12 stops. increase.
為兩端電壓係整流二極體 包S 壓。此時，Ρ型M〇SFET32之門^；：上汁至開啟之電 21之m曰m 之間極電壓係成為輸出端子 21之电壓，且相較於對輪出端子21供仏帝 剛而言，對輸出端 ：：力戶“之“ 係僅P型猶…二：：力：需之電感器電壓 能下，帝;=5哭+山+ 邛刀、交同。也就是說’在此狀 心下电感為兩端電壓係整流二極體41先開 感器而供給電力至輸出心”〜&開啟並猎由电 未達到開啟之電壓且^子^因此^型肋随32 ^感為電流-邊對輸出端子21供給電力， 地下降而回到0。 、、、速 ㈣I妾者’轉換向輸出端子22之電力供給動作。首先’ 52^^由「高」變化至「低」’且p型M〇SFET =處於開啟狀態’控制電路51之輸出成為 __31開啟，而於電感 0773-A33104TWF；KB06010；f〇rever769 13 200826451 此電感器12之電流係隨祌p目 ci r ^寸間而成比例增加，之後，由於 / 私、 剧 低」而Ν型MOSFET 3 1關閉之故， ::;感器12之電流停止增力…，電感！ U兩端 Π壓係上昇至整流二極體…2之任-開啟的電壓 :、Ρ型MOSFET 32之閘極係成為接地（GND)電壓， ^為Vth以上之電壓施加於源極之開啟狀態。輸出端 1、’電壓若設定成較輸出端子22之電壓低的話，由 ;“L:極體42先啟動之故，因此整流二極體42因開 啟之迅壓而產生紋破，電感器12之電壓係藉由 =給電力至輸出端子22。也就是說，在此種狀態下， 正机一極體42先開啟，藉由電感器12而向輸出端子22 i、％力因此，整流二極體41未達到開啟之電壓，且 未供給電力至輸出端子2卜之後，電感器12之電流 對輸出^子22供給電力’―邊持續快速地下降而回到〇。 藉由重複以上之動作，可以利用時分割方式對輸出 端子21及22進行電力供給。 接著，2)在僅向輸出端子21進行電力供給之情況 下，跳過上述1)之後半的動作。另外，3)在僅向輸出端 子22進行電力供給之情況下，跳過上述之後半的動 阼。4)在電力供給停止之情況下，跳過上述1)之全部動 作。也就是說，控制電路51輸出「低」，且使N型m〇SFe丁 31關閉。 [實施例2] 圖2係繪示本發明之實施例2之直流_直流轉換器的 0773-A33104TWF;KB06010；f〇rever769 14 200826451 出3個、貝糸表示在實施例1之電路十進一步輸 Μ上電壓之情況的例子。如圖2所示，在 例中’輸出端子之電壓從高侧依21、22、23 貝 設定。例如，在對輪出端子23進行電 =序 將該控制電路53之輪出端子設定為「低」位；=ρ =〇:ΕΤ33’之後將控制電路51之輸出設定為「高」 啟動Ν型Μ⑽ΕΤ3卜之後，電感器12之電流 广間而成比例增加’且由於控制電路51輸出 準而Ν型]VTOSFET 3 1關pq々私 -」 / 關閉之故，因此電感器12之電流 曰σ τ 。之後，電感器12兩端之電壓係上昇至整流二 極體41〜44之任-啟動的電壓。在此，由於ρ型“τFor the voltage system at both ends, the rectified diode package S pressure. At this time, the gate of the Ρ-type M 〇 SFET 32 is connected to the voltage of the output terminal 21 between the m 曰 m and the turn-on terminal 21, and is compared with the supply terminal 21 for the wheel terminal 21 Words, on the output:: Powerhouse "" is only P-type... II:: Force: the inductor voltage required, the emperor; = 5 cry + mountain + sickle, the same. That is to say, 'in this case, the inductor is the voltage at both ends, and the rectifying diode 41 first opens the sensor and supplies power to the output core." & Open and hunt the voltage that has not been turned on by the power and ^^^^ The rib is supplied with electric current to the output terminal 21 with a sense of current, and is grounded and returned to 0. The speed of the electric power supply to the output terminal 22 is switched to the output terminal 22. First, '52^^ is high Change to "low" and p-type M〇SFET = in the on state 'The output of control circuit 51 becomes __31 on, and in inductor 0773-A33104TWF; KB06010; f〇rever769 13 200826451 The current of this inductor 12 is祌p目ci r ^ inch ratio increases, afterwards, due to / private, low drama" and the MOSFET 3 1 is turned off, ::; the current of the sensor 12 stops increasing force..., inductance! The voltage at both ends of the U rises to the rectifying diode... 2 is the voltage of the turn-on: the gate of the MOSFET MOSFET 32 becomes the ground (GND) voltage, and the voltage above Vth is applied to the open state of the source. . When the output terminal 1, 'voltage is set to be lower than the voltage of the output terminal 22, "L: the polar body 42 is activated first, so the rectifying diode 42 is broken due to the rapid opening of the opening, and the inductor 12 is broken. The voltage is supplied to the output terminal 22 by =. That is to say, in this state, the positive electrode 42 is first turned on, and the inductor 12 is turned to the output terminal 22, the % force is therefore rectified. After the pole body 41 has not reached the voltage of the opening, and the power is not supplied to the output terminal 2, the current of the inductor 12 supplies the power to the output unit 22, and continues to fall rapidly and returns to 〇. By repeating the above actions The power supply to the output terminals 21 and 22 can be performed by the time division method. Next, when the power supply is performed only to the output terminal 21, the operation of the second half of the above 1) is skipped. When the output terminal 22 supplies power, the power of the second half is skipped. 4) When the power supply is stopped, all the operations of the above 1) are skipped. That is, the control circuit 51 outputs "low". And the N-type m〇SFe Ding 31 is turned off. [Embodiment 2] Fig. 2 is a diagram showing a 0-103-340F of a DC-DC converter according to Embodiment 2 of the present invention; KB06010; f〇rever769 14 200826451, and 3, which indicates that the circuit of Embodiment 1 is further lost. An example of a situation where voltage is applied to the voltage. As shown in Fig. 2, in the example, the voltage of the output terminal is set from 21 to 22, 23 in the high side. For example, the wheel terminal of the control circuit 53 is set to the "low" position by the electric terminal of the wheel terminal 23; the output of the control circuit 51 is set to "high" after the = ρ = 〇: ΕΤ 33'. After Μ(10)ΕΤ3, the current of the inductor 12 is proportionally increased, and since the output of the control circuit 51 is accurate, the VTOSFET 3 1 is turned off, and the current of the inductor 12 is 曰σ τ. . Thereafter, the voltage across the inductor 12 rises to the voltage at which the rectifying diodes 41 to 44 are activated. Here, due to the p-type "τ
33啟動之故，可以藉由整流二極體43而僅對輸出端子 23供給電力。在此，由於二極體41及42係輸出端子21 及22之電壓較電感器之第2端子71高的緣故，且由於 整流二極體41變成逆偏壓電位之故，因此關閉且未受到 電力供給。另外’雖然輸出端子24之電壓變得比輸出端 子23之電壓低，但是由於ρ型MOSFET 34關閉之故， 因此亦未對輸出端子24供給電力。以下，對輸出端子22 及24之供給也藉由與上述一樣之順序進行。 [實施例3] 圖3係繪示本發明之實施例3之直流_直流轉換器的 電路圖。實施例3係表示在實施例2之電路中進一步輸 出3個以上之負電壓之情況的例子。與實施例2相異之 處係··為了輸出複數個負電壓而在輸入側追加ρ型 0773-Α33104TWF;KB06010;forever769 15 200826451 " MOSFET 35與控制電路55，並在輸出侧追力口整流用二極 體ΗΠ、102、103、104、紋波除去用電容器64、63、62、 61、輸出端子 121、122、123、124、控制電路 112、113、 114 及 P 型 MOSFET 92、93、94。輸出端子 121、122、 123、124之電力供給的動作係與實施例1相同。 首先，為了對輸出端子121供給負電壓，將控制電 路55之輸出控制為「低」位準，使P型MOSFET 35開 啟。之後，將控制電路51之輸出控制為「高」位準，使 ， N型MOSFET 3 1開啟。藉此，電感器之電流隨時間而成 比例增加。接著，一旦從控制電路55輸出「高」位準的 話，則P型MOSFET 35關閉，而電感器電流之增加停止。 在此，由於N型MOSFET 31就此開啟之故，因此電感器 第2端子71係固定於接地（GND)。因此，電感器第一電 壓係整流用二極體之任一持續降低至啟動之電壓。此 時，N型MOSFET 92、93、94之閘極電壓係成為輸出端 子121之電壓，且相較於對輸出端子122、123、124供 I 給電力所需之電壓而言，變得僅低了 N型MOSTFET之 Vth的量。也就是說，在此狀態下，電感器兩端電壓係整 流二極體101先啟動而整流用二極體101成為順方向偏 壓並降低至啟動之電壓。電流藉由N型MOSFET而從輸 出端子121而流至整流二極體101、電感器12，而於輸 出端子121供給負電壓。之後，電感器電流持續迅速下 降而回到0。在一連串之動作中，由於整流二極體41、 42、43、44變成逆偏壓之故，因此不會產生來自輸出端 0773-A33104TWF;KB06010;forever769 16 200826451 子2 1、22、23、24之電流的逆流。 接著，轉換向輸出端子122之負電塵供給動作。首 先，將控制電路55之輸出控制為「低」位準’且啟動p 型MOSFET 35。之後，將控制電路51之輸出控制為「高」 位準，且啟動N型MOSFET 31。藉此，電感器電流隨時 間而成比例增加。接著，一旦從控制電路55輪出「高」 位準的話，則P型MOSFET 35關閉，而電感器電流之增 加停止。在此，由於N型MOSFET 3 1就此開啟之故，因 此電感器第2端子71係固定於接地（GND)。因此，電感 器第一電壓係整流用二極體之任一持續降低至啟動之電 壓。此時，P型MOSFET 92之閘極電壓變成接地（GNd) 電壓，而N型MOSFET 93、94之閘極電壓變成輪出端子 121之電壓，且相較於對輸出端子123、124供給電力所 需之電壓而言，變得僅低了 N型MOSTFET之Vth的量。 也就是說，在此狀態下，電感器兩端電壓係整流二極體 102先啟動而整流用二極體1〇2成為順方向偏壓並降低至 啟動之電壓。電流藉由N型MOSFET而從輸出端子122 而流至整流二極體102、電感器12，而於輸出端子121 供給負電壓。之後，電感器電流持續迅速下降而回到〇。 在一連串之動作中，由於整流二極體1〇1、103、1〇4變 成逆偏壓之故，因此不會產生來自輸出端子12 1、123、 124之電流的逆流。以下，對輸出端子22及24之供給也 藉由與上述一樣之順序進行。以下，對輸出端子丨及 124之供給也藉由與上述一樣之順序進行。如以上所述， 0773-A33104TWF;BCB06010；f〇rever769 17 200826451 • 可以對輸出端子121、122、123、124依序供給負電壓。 [實施例4] 圖4係繪示本發明之實施例4之直流-直流轉換器的 電路圖。實施例4係未輸出正電壓僅而輸出複數個負電 壓之情況的例子。如圖4所示，在輸入侧設置P型 MOSFET Μ與控制電路％，而在輸出侧設置複數個整流 用二極體101、10 2、103、104、複數個紋波除去用電容 器64、63、62、61及複數個輸出端子121、122、123、 ( 124、控制電路 112、113、114 及 Ρ 型 MOSFET 92、93、 气.' 94。用於向輸出端子121、122、123、12 4供給負電壓之 動作也與實施例3相同。 【圖式簡單說明】 第1圖係繪示本發明之實施例1之直流-直流轉換器 的電路圖。 第2圖係繪示本發明之實施例2之直流-直流轉換器 (的電路圖。 第3圖係繪示本發明之實施例3之直流-直流轉換器 的電路圖。 第4圖係繪示本發明之實施例4之直流-直流轉換器 的電路圖。 【主要元件符號說明】 11〜直流電源， 12〜電感， 21〜輸出端子； 22〜輸出端子； 0773-Α3 3104TWF;KB06010;forever769 18 200826451When the start-up 33 is started, only the output terminal 23 can be supplied with electric power by the rectifying diode 43. Here, since the voltages of the output terminals 21 and 22 of the diodes 41 and 42 are higher than the second terminal 71 of the inductor, and since the rectifying diode 41 becomes a reverse bias potential, it is turned off and not Received electricity supply. Further, although the voltage of the output terminal 24 is lower than the voltage of the output terminal 23, the p-type MOSFET 34 is turned off, so that the output terminal 24 is not supplied with electric power. Hereinafter, the supply of the output terminals 22 and 24 is also performed in the same order as described above. [Embodiment 3] Fig. 3 is a circuit diagram showing a DC-DC converter of Embodiment 3 of the present invention. The third embodiment shows an example in which three or more negative voltages are further outputted in the circuit of the second embodiment. Different from the second embodiment, in order to output a plurality of negative voltages, a p-type 0773-Α33104TWF is added to the input side; KB06010; forever769 15 200826451 " MOSFET 35 and control circuit 55, and rectified at the output side. Diode ΗΠ, 102, 103, 104, ripple removing capacitors 64, 63, 62, 61, output terminals 121, 122, 123, 124, control circuits 112, 113, 114 and P-type MOSFETs 92, 93, 94. The operation of supplying power to the output terminals 121, 122, 123, and 124 is the same as that of the first embodiment. First, in order to supply a negative voltage to the output terminal 121, the output of the control circuit 55 is controlled to a "low" level to turn on the P-type MOSFET 35. Thereafter, the output of the control circuit 51 is controlled to the "high" level so that the N-type MOSFET 3 1 is turned on. Thereby, the current of the inductor increases proportionally with time. Next, once the "high" level is output from the control circuit 55, the P-type MOSFET 35 is turned off, and the increase in the inductor current is stopped. Here, since the N-type MOSFET 31 is turned on, the second terminal 71 of the inductor is fixed to the ground (GND). Therefore, either of the inductor first voltage-voltage rectifying diodes is continuously lowered to the starting voltage. At this time, the gate voltages of the N-type MOSFETs 92, 93, and 94 become the voltage of the output terminal 121, and become lower than the voltage required to supply power to the output terminals 122, 123, and 124. The amount of Vth of the N-type MOSTFET. That is, in this state, the voltage across the inductor is the rectifier diode 101 being activated first, and the rectifier diode 101 is biased in the forward direction and lowered to the startup voltage. The current flows from the output terminal 121 to the rectifying diode 101 and the inductor 12 via the N-type MOSFET, and a negative voltage is supplied to the output terminal 121. After that, the inductor current continues to drop rapidly and returns to zero. In a series of actions, since the rectifying diodes 41, 42, 43, 44 become reverse biased, they do not generate output from the output 0773-A33104TWF; KB06010; forever769 16 200826451 sub 2 1 , 22 , 23 , 24 The current flow is reversed. Next, the negative electric dust supply operation to the output terminal 122 is switched. First, the output of the control circuit 55 is controlled to the "low" level and the p-type MOSFET 35 is activated. Thereafter, the output of the control circuit 51 is controlled to the "high" level, and the N-type MOSFET 31 is activated. Thereby, the inductor current is proportionally increased over time. Next, once the "high" level is turned from the control circuit 55, the P-type MOSFET 35 is turned off, and the increase in the inductor current is stopped. Here, since the N-type MOSFET 3 1 is turned on, the second terminal 71 of the inductor is fixed to the ground (GND). Therefore, either of the first voltage-rectifying diodes of the inductor is continuously lowered to the starting voltage. At this time, the gate voltage of the P-type MOSFET 92 becomes the ground (GNd) voltage, and the gate voltage of the N-type MOSFETs 93, 94 becomes the voltage of the turn-out terminal 121, and is compared with the supply of power to the output terminals 123, 124. In terms of the required voltage, it becomes only the amount of Vth of the N-type MOSTFET. That is, in this state, the voltage across the inductor is the rectifying diode 102 first activated and the rectifying diode 1 〇2 is biased in the forward direction and lowered to the starting voltage. The current flows from the output terminal 122 to the rectifying diode 102 and the inductor 12 via the N-type MOSFET, and a negative voltage is supplied to the output terminal 121. After that, the inductor current continues to drop rapidly and returns to 〇. In a series of operations, since the rectifying diodes 1?1, 103, and 1?4 are reverse biased, no backflow of current from the output terminals 12, 123, and 124 occurs. Hereinafter, the supply of the output terminals 22 and 24 is also performed in the same order as described above. Hereinafter, the supply of the output terminals 丨 and 124 is also performed in the same order as described above. As described above, 0773-A33104TWF; BCB06010; f〇rever769 17 200826451 • Negative voltages can be sequentially supplied to the output terminals 121, 122, 123, and 124. [Embodiment 4] Fig. 4 is a circuit diagram showing a DC-DC converter of Embodiment 4 of the present invention. The fourth embodiment is an example in which a positive voltage is not output and only a plurality of negative voltages are output. As shown in FIG. 4, a P-type MOSFET Μ and a control circuit % are provided on the input side, and a plurality of rectifying diodes 101, 10 2, 103, and 104 and a plurality of ripple removing capacitors 64 and 63 are provided on the output side. 62, 61 and a plurality of output terminals 121, 122, 123, (124, control circuits 112, 113, 114 and Ρ-type MOSFETs 92, 93, gas. '94. For output terminals 121, 122, 123, 12 The operation of supplying the negative voltage is the same as that of the third embodiment. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a circuit diagram showing a DC-DC converter according to Embodiment 1 of the present invention. Fig. 2 is a view showing the implementation of the present invention. A circuit diagram of a DC-DC converter of Example 2. Figure 3 is a circuit diagram of a DC-DC converter of Embodiment 3 of the present invention. Figure 4 is a diagram showing DC-DC conversion of Embodiment 4 of the present invention. Circuit diagram of the main device [Description of main components] 11~DC power supply, 12~inductor, 21~output terminal; 22~output terminal; 0773-Α3 3104TWF; KB06010;forever769 18 200826451
23〜輸出端子； 25〜輸出端子； 32〜P 型 MOSFET ; 34〜P 型 MOSFET ; 41〜整流二極體； 4 3〜整流二極體； 45〜整流二極體； 52〜控制電路； 54〜控制電路； 62〜紋波除去用電容器 63〜紋波除去用電容器 64〜紋波除去用電容器 71〜電感器第2端子； 92〜P 型 MOSFET ; 94〜P 型 MOSFET ; 102〜整流二極體； 104〜整流二極體； 113〜控制電路； 24〜輸出端子； 31 〜N 型 MOSFET ; 33〜P 型 MOSFET ; 35〜P 型 MOSFET ; 42〜整流二極體； 44〜整流二極體； 51〜控制電路； 53〜控制電路； 61〜紋波除去用電容器 72〜電感器第1端子； 93〜P 型 MOSFET ; 101〜整流二極體； 103〜整流二極體； 112〜控制電路； 114〜控制電路。 0773-A33104TWF;KB06010;forever769 1923~output terminal; 25~output terminal; 32~P type MOSFET; 34~P type MOSFET; 41~rectifying diode; 4 3~rectifying diode; 45~rectifying diode; 52~control circuit; ~Control circuit; 62~ Ripple removing capacitor 63~ Ripple removing capacitor 64~ Ripple removing capacitor 71~Inductor second terminal; 92~P type MOSFET; 94~P type MOSFET; 102~Rectifying diode 104; rectifying diode; 113~ control circuit; 24~ output terminal; 31~N type MOSFET; 33~P type MOSFET; 35~P type MOSFET; 42~rectifying diode; 44~rectifying diode 51~ control circuit; 53~ control circuit; 61~ ripple removing capacitor 72~ inductor first terminal; 93~P type MOSFET; 101~rectifying diode; 103~rectifying diode; 112~control circuit ; 114 ~ control circuit. 0773-A33104TWF; KB06010; forever769 19