1330443 98-11-27 九、發明說明： 【發明所屬之技術領域】 可降疋有關於—種電荷幫浦，且特別是有關於-種 【先前技術】⑦何❹電路及其控制電路。 因此t電^置中’往往需要各種不同準位的電源縣， 路以便利用現有的電 分稷不同準位的電源電壓。 壓壓電路時，最直接的方法是使用升 去構成升堡電路(b〇〇st circuit)。如果在驅動電流 路罐浦電 使;，路有較大的漣波轉PP1::尤i 疋在輸入電壓愈接近輸出電壓時。 圖1繪不為習知的電荷幫浦電路。如圖i 器H)0與-電荷幫浦單元1〇1。控制器刚包含一 控制早兀CU10與-比較器OP10。電荷幫浦單元⑻ 一電容器102與多個開關SWu、SW13、SW14、謂5。 圖2繪示為習知圖丨電荷幫浦電路之動 ^ 二參 ΓΙ1^ PSM(Pulse Slap Modulation，脈波省略調變）去栌 。 放，時間。如圖2所示’初始時，輪咖St 的電壓值較小，比較器ΟΡΗ)正輸入端的電壓小於 端的預設電壓Vref’此時内部振盪器會產生一時朊訊^ 控制開關SW11、SW13、SW14、SW15的導通狀態5; ^開 98-11-27 =二wu、削導通時’開關SW13侧不 電f Vm開始對電容器102充電；當開關_、 =L ，開關_、SW15會導通，此時電容器 負載電容⑶放電，輸出電塵V〇Ut為輸入電壓 Vm與電容器1〇2之電壓和。 电至 哭ιοί 所儲存之電荷會隨著時間損耗而使得電容 :個二:降，導致輪咖V_ Τ降。因此重複 〇 〜週期’直到輸出電壓v〇ut的電壓值上升，比較 =10 L端的切諸人端輔_ Vref 騎PSM脈波開始作用，開關swu J-口 : iL輸入端的電壓再度小於負輸入端的預設電壓 re後’ PSM脈波再將開關SWU、SW12、SW13、 哭102 2通狀怨反向’使輸入電壓Vin重新開始對電容 二使輸出電壓Vout#度上升，比較器όριό正 、IH見壓再度大於負輸入端的預設電壓Vref°PS]v^ 波曰重減^作，將輸出電壓Vout維持在-定電壓值。 f 了更突㈣知電荷幫浦電路的缺點，假設輸入電麼 Vln^v’所需輸出電壓V0U^8V，因此目標電容器搬 的3V —開始由内部振4器反覆切換開關SW11、 、_、SW15對電容器1G2充電使電容器102 之電整於3V，也就是使輸出電壓Vout大於8V。 然而驾知電荷幫浦電路在對電容器102充電時，由於 缺乂個控制包路’電容器102會被過度充電至5V，也就 1330443. 98-1T57 是輸入電壓Vin的電麼準位，使得輪出電 頌5導通時為_。待電容ϋ 1〇2的電壓下降至^3、 下，讀脈波控·關SW13、SW15不導通、swu、3^ 導通，輸人^Vm會麵對電㈣m充電 會再度被過度充電至5V，使楫铨+ + w ^ 102 在顺脈波反覆對電容器度為7。因此 訊至少為2V，輸入電屋Vin越輪 建波雜 雜訊越嚴重。vout ’連波 【發明内容】 在I私本考1月的目的就是在提供—種控制電路，1可約 容器的放電時:據的輪出端的電壓值決定電 電路可Li::;::是提供-種電荷幫浦電路，其控制 决定電容之】f大小去控制電荷幫浦— 電屋值決定電㈣根據電荷幫浦單元的輪出端的 穩定度的放電時間，穩定輸出電麼，增加系統 幫浦ΐί 係控制-電荷 一控制輸入端及批70。一電容器。控制電路包括 間，且根據電_= 值決⑼容器的充電時 電時間。 冑瑜早兀的輸出端電屢值決定電容器的放 7 [S] p-30443-11330443 98-11-27 IX. Description of the invention: [Technical field to which the invention pertains] There is a description of the type of charge pump, and particularly related to the [prior art] 7 circuit and its control circuit. Therefore, it is often necessary to use various power supply counties of different levels to utilize the existing power supply voltages of different levels. When pressing a circuit, the most straightforward method is to use a rise to form a b〇〇st circuit. If the drive current is discharged, the circuit has a large chopping turn PP1:: especially when the input voltage is closer to the output voltage. Figure 1 depicts a conventional charge pump circuit. As shown in Figure i, H) 0 and - charge pump unit 1〇1. The controller just contains a control early CU10 and - comparator OP10. The charge pump unit (8) has a capacitor 102 and a plurality of switches SWu, SW13, SW14, and 5. Figure 2 is a diagram showing the movement of a conventional charge pump circuit. The PSM (Pulse Slap Modulation) is removed. Put, time. As shown in Fig. 2, 'initial time, the voltage value of the wheel coffee St is small, the comparator ΟΡΗ) the voltage at the positive input terminal is less than the preset voltage Vref' of the terminal. At this time, the internal oscillator generates a temporary control signal, the control switches SW11, SW13, The conduction state of SW14 and SW15 is 5; ^ 98-11-27 = 2 wu, when the conduction is turned on, the switch SW13 side is not charged f Vm starts to charge the capacitor 102; when the switch _, =L, the switch _, SW15 will be turned on, At this time, the capacitor load capacitance (3) is discharged, and the output electric dust V〇Ut is the voltage sum of the input voltage Vm and the capacitor 1〇2. Electric to cry ιοί The stored charge will cause capacitance with time loss: two: down, causing the wheel coffee V_ Τ drop. Therefore repeat 〇 ~ cycle ' until the voltage value of the output voltage v 〇ut rises, compare = 10 L end of the cutting edge _ Vref riding PSM pulse starts to act, switch swu J- port: iL input voltage is again less than the negative input After the preset voltage re of the end, the PSM pulse wave reverses the switches SWU, SW12, SW13, and the crying 102 2 to reverse the input voltage Vin to restart the capacitor 2 to increase the output voltage Vout#, and the comparator όριό正, The IH pressure is again greater than the preset voltage of the negative input terminal. Vref°PS]v^ The ripple voltage is reduced and the output voltage Vout is maintained at a constant voltage value. f has a more prominent (four) known charge pump circuit shortcomings, assuming the input voltage Vln ^ v 'required output voltage V0U ^ 8V, so the target capacitor moved 3V - start by the internal vibrator 4 switch switch SW11, _, The SW 15 charges the capacitor 1G2 to make the capacitor 102 electrically equal to 3V, that is, to make the output voltage Vout greater than 8V. However, when the charge pump circuit is charging the capacitor 102, the capacitor 102 will be overcharged to 5V due to the lack of a control package, and 1330443. 98-1T57 is the power level of the input voltage Vin, so that the wheel When the power output 颂5 is turned on, it is _. The voltage of the capacitor ϋ1〇2 drops to ^3, down, the read pulse control, the SW13, SW15 are not conducting, swu, 3^ conduction, the input ^Vm will face the electricity (four) m charging will be overcharged to 5V again , so that 楫铨 + + w ^ 102 in the forward pulse wave to the capacitor degree is 7. Therefore, the signal is at least 2V, and the input to the electric house Vin is more serious. Vout '连波[The content of the invention] The purpose of the private test in January is to provide a kind of control circuit, 1 can discharge about the container: the voltage value of the wheel-out terminal determines the electrical circuit can be Li::;:: Is to provide a kind of charge pump circuit, its control determines the capacitance of the f size to control the charge pump - the electric value determines the electricity (four) according to the discharge time of the charge of the charge pump unit of the stability of the discharge time, stabilize the output power, increase The system is controlled by a charge-control input and a batch 70. A capacitor. The control circuit includes an interval, and (9) the charging time of the container according to the electric_= value. The output value of the output of Yu Yu early is determined by the capacitor. 7 [S] p-30443-1
4Vf今獅I 98-11-27 依照本發明的較佳實施例所述之控制電路，上述電荷 幫浦單元包括-第-開關，且控制器包括—第—比較器及 :控制單it。第-開關祕於電容器與—輪人電壓之間。 第-比較雜控制輸人端的頓與—第—預設電壓作比較 輪出-第-㈣信號。㈣單元根據第—控織號決定第 —開關的導通狀態。 依照本發明的較佳實施例所述之 比較器以及一控制單元。第二比二 的Γ端電壓與一第二預議比較之後輸出 的:;=域。控制單元根據第二控制信號決定電容器 令㈣域出-種電前浦電路，此電荷幫 2二輪人端、—輪出端及—電荷幫浦單元。輸入端 輸入電壓。輸出端耦接至—輸㈣壓，穩 塗大於輸人電壓。電荷幫浦單元_輸:=1 間’此電荷幫浦單元包括至少—電=輸μ與輸出端; ，單元與輸出端之間，此控制電路 ^以及一控制器。控制势嫂.淫 ^工制輸; 根據控制輸入端之“”二，耦接電容器。控制! 。刊八躺疋；壓值決定電容器 1出端之電壓值決定電容H的放電時間。η ’亚根去 本發明所提出的電荷幫浦電 •根據㈣輸人端之電壓值控制電荷 定電容器的充電時間，且根據電荷幫浦 ’進^ 南早兀的輪出端的^ 4乜日f爭替換1 98-11-27 ^值蚊電容器的放電時間，因此達到減少漣波雜訊的目 易懂為之上述和其他目的、特徵和優點能更明顯 日^下特舉較佳實施例，魏合所_式，作詳細說 【實施方式】 鳴的術的魏架構僅_ —個比㈣，將輸出 與參輸比較，輪出-控制信號至-控制單 電，產“ 的充放電時間’會造成電容器的過度充 電路及丨+ '㈣況。因此本發明提出—種電荷幫浦 Z及其㈣電路，肋獲得較 控制，減少漣波雜訊，使電糾hU放電日守間 現。以下便以實施例來說明本=電路有較好輸出電壓表 如圖㈣騎發明實施例之電㈣浦電_電路圖。 ，所不，電荷幫浦電路包括電荷幫浦304Vf lion I 98-11-27 In accordance with a control circuit in accordance with a preferred embodiment of the present invention, the charge pump unit includes a -th switch, and the controller includes a - comparator and a control unit it. The first switch is secret between the capacitor and the wheel voltage. The first-comparison control input terminal compares with the -first-preset voltage. The round-of-fourth (fourth) signal. (4) The unit determines the conduction state of the first switch according to the first control number. A comparator and a control unit in accordance with a preferred embodiment of the present invention. The second-to-two terminal voltage is compared with a second prediction: the == field. The control unit determines, according to the second control signal, a capacitor (4) field-type electric pre-push circuit, the electric charge 2 and 2 rounds of the human end, the wheel end and the charge pump unit. Input input voltage. The output end is coupled to the - (four) voltage, and the steady coating is greater than the input voltage. The charge pump unit _transmission: = 1 'this charge pump unit includes at least - electric = input μ and output;; between the unit and the output, the control circuit ^ and a controller. Control the potential 淫. 淫 ^工制输; According to the control input "" two, coupled to the capacitor. Control! The eight values are lying down; the voltage value determines the discharge voltage of the capacitor 1 and the discharge time of the capacitor H is determined. η 'Agen goes to the charge pump of the invention. According to the voltage value of the input terminal, the charge time of the charge capacitor is controlled, and according to the charge pump, the turn-out end of the south f is to replace the discharge time of the 1 98-11-27 ^ value mosquito capacitor, so it is easy to understand the above and other objects, features and advantages of reducing the noise of the chopper. , Wei He's _ type, for the detailed description [embodiment] Wei's Wei architecture only _ - a ratio (four), the output is compared with the input, the wheel-control signal to - control single electricity, the production of "charge and discharge" The time 'will cause the capacitor to overcharge the circuit and 丨 + '(4). Therefore, the present invention proposes a charge pump Z and its (four) circuit, the rib is controlled, reducing the chopping noise, so that the electric correction hU discharge day guard Now, the following is an example to illustrate that the circuit has a better output voltage meter as shown in the figure (4). The electric (four) power-on circuit diagram of the invention embodiment. No, the charge pump circuit includes the charge pump 30.
明實施例的控制電路。電朽幫_ _ 本I 电峪電何4浦早兀301包括至少—電容 ^〇2與數個咖_卜撕2、挪3、 的㈣電路包括一控制輪-^ π & 較哭OP31二ϋ〇0包括—第—比較器0P30、一第二比 平乂〇〇 〇P31以及—控制單元CU3〇 〇 第-比較器OP30將控制輪入端 預設電壓VI作比鲂，铨屮错^ 巧禮興弟一 ，、哭㈣1 弟—控制信號㈣。第二比 Γ預^壓=電荷幫浦單元301的輪出電壓^與一 tuV2比較之後輸出_第二控制信號ct3i。控 m〇443- A \ιψΊ-^ 98-11-27 制單7L CU30根據第一控制信號CT3〇與第二控制作號 CT31 決定開關 SWM、SW32、SW33、SW34、s&5 ^ 導° 通狀態。換句話說，控制單元CU3〇根據第一控制信號ct3〇 與第二控制信號CT31控制電容器3〇2之充放電時間。 圖4繪示為圖3實施例之動作波形圖。請同時參考圖 3與圖4，初始時，輸出電壓v〇ut的電壓值較小，第二比 車父态0P31正輸入端的電壓小於負輸入端的第二預設電壓 V2 ’内料盈器會產生一時脈訊號去十刀換電路開關 SW3卜 SW32、SW33、SW34 與 SW35，反覆對電容器 3〇2 充電，重複數個週期直到輸出電壓v〇ut上升，第二比較器 0P31正輸入端的電壓大於負輸入端的第二預設電壓。 同時因為電容器302的電壓值上升，第一比較器〇p3〇正 輸入端的電壓已經大於負輸入端的第一預設電壓V1，使得 控制單元CU30根據第一控制信號CT3〇，使開關SWM、 SW32、SW34不導通’保持電容器3〇2之電壓不變。當控 制單兀CU30使開關SW3卜SW32與SW34保持不導通， 並使開關SW33、SW35導通，此時輸出電壓v〇ut的電壓 值在所需電壓值之上，第二比較器〇p31正輸入端的電壓 大於負輸入端的第二預設電壓V2。 當電容器302所儲存之電荷隨著時間的損耗而減少， 輸出電壓Vout的電壓值也將隨時間下降。當第二比較器 0P31正輸入端的電壓再度小於負輸入端的第二預設電壓 V2時，控制單元CU3〇根據控制信號CT3丨使開關SW3丄、 SW32與SW34導通，並使開關SW33、SW35開路，電容 ϋ 302開始充電，直到第一比較器〇p3〇正輸人端的電壓 大於負輸入端的第-預設電MV1。此時控制單元⑶ 開關SW3卜S霞與SW34保_路，並使開關咖3、 SW35導通，輸出糕上升，第二比較器〇ρ3ι正輸 入端的電壓大於負輸入端的第二預設電壓V2。重複此動 作，可使輸出電壓Vout穩定在所需電壓之上。 欠 比較圖3與圖1，可知由於本發明新加入了第—比較 益OP30可將控制輸入端303的電壓與第一預設電壓νι 作比較，來偵測電容器302的電壓位準與充電狀態， 第-控制信號CT3G來控制電容器地的充放電時間, 制單元CU30根據第-控制錢CT3〇決定開_ 二 SW32與SW34的導通狀態，使得電容器搬不會過度充 電，可以有效的減少輸出電壓v〇ut的漣波雜訊。 為了更突顯本實施例的優點所在，假設輸入電壓I 為W，所需輸出電壓V〇ut為8V，因此目標電容器搬 的電屢為3V。-開始由内部振|器反覆切換開關SW31、 =32、SW33、SW34、SW35對電容器3〇2充電，使電容 器302之電壓大於3V，也就是使輸出電壓v〇ut大於:w。 此實施例在對電容器302充電時，由於控制器3〇〇新 加入-個比較器OP30’電容器搬不會被過度充電至 控制益3〇0將根據控制輪入端3〇3㈣壓值，也就是電容 器3〇23的電壓值，決定電容器302的充電時間。 假设第一預設電壓為3.5*R31/(R3〇+R31)v,當電容器 3〇2充電至大於3.5V時’控制單元使開關8額、、 98-11-27 n 輸賴停讀電容器搬充電，使㈣ 出電壓在開關SW33、SW3導 电使付輪 容哭302的雷厭丁政通的同時僅為8.5V。待電 SW33、SW35 ^ S降至外以下，^脈波控制開關 tTv：^ 充電至3.5V 容器302會再度被 波反覆對電容Λ 為v。因此在psm脈 〇.5V，較習知的1幫:= 過程中’產生漣波雜訊僅為 平又為知的私何幫浦電路的漣波雜訊為低。 μ 提岐，顧上述實關中已輯電荷幫浦電 =;;τ描綠出了一些可能的型態，但在本領域】 -各廠商對於控制電路的設計方式都不 〜g此本u U t不_於此種可能The control circuit of the embodiment. Electric 帮 _ _ This I 峪 峪 何 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Ϋ〇0 includes - the first comparator 0P30, a second ratio 乂〇〇〇 P31 and - the control unit CU3 〇〇 the first comparator OP30 will control the wheel preset voltage VI as a comparison, erroneous ^ Qiao Li Xingdi one, crying (four) 1 brother - control signal (four). The second ratio Γ pre-press = the output voltage of the charge pump unit 301 is compared with a tuV2 and then outputs a second control signal ct3i. Control m〇443- A \ιψΊ-^ 98-11-27 System 7L CU30 determines the switches SWM, SW32, SW33, SW34, s&5^ according to the first control signal CT3〇 and the second control number CT31 status. In other words, the control unit CU3 controls the charge and discharge time of the capacitor 3〇2 based on the first control signal ct3 〇 and the second control signal CT31. 4 is a waveform diagram showing the operation of the embodiment of FIG. 3. Please refer to FIG. 3 and FIG. 4 at the same time. Initially, the voltage value of the output voltage v〇ut is small, and the voltage of the second input ratio of the positive input terminal of the vehicle parent state 0P31 is smaller than the second preset voltage of the negative input terminal V2. A clock signal is generated to switch the circuit switch SW3, SW32, SW33, SW34 and SW35, and the capacitor 3〇2 is repeatedly charged, repeating for several cycles until the output voltage v〇ut rises, and the voltage of the positive input terminal of the second comparator 0P31 is greater than The second preset voltage of the negative input terminal. At the same time, because the voltage value of the capacitor 302 rises, the voltage of the positive input terminal of the first comparator 〇p3〇 is already greater than the first preset voltage V1 of the negative input terminal, so that the control unit CU30 makes the switches SWM, SW32, according to the first control signal CT3〇, SW34 does not conduct 'keeping the voltage of capacitor 3〇2 unchanged. When the control unit CU30 keeps the switch SW3 SW32 and SW34 non-conducting, and turns on the switches SW33 and SW35, the voltage value of the output voltage v〇ut is above the required voltage value, and the second comparator 〇p31 is input. The voltage at the terminal is greater than the second predetermined voltage V2 at the negative input. When the charge stored by capacitor 302 decreases over time, the voltage value of output voltage Vout will also decrease over time. When the voltage of the positive input terminal of the second comparator OP31 is less than the second preset voltage V2 of the negative input terminal, the control unit CU3 turns on the switches SW3 丄, SW32 and SW34 according to the control signal CT3 ,, and opens the switches SW33 and SW35. Capacitor ϋ 302 begins to charge until the voltage of the first comparator 〇p3 〇 positive input terminal is greater than the first predetermined power MV1 of the negative input terminal. At this time, the control unit (3) switch SW3, S Xi and SW34, keeps the switch 3, SW35 turned on, and the output cake rises. The voltage of the positive input of the second comparator 〇ρ3ι is greater than the second preset voltage V2 of the negative input terminal. This action is repeated to stabilize the output voltage Vout above the desired voltage. Comparing FIG. 3 with FIG. 1, it can be seen that since the present invention newly adds the first comparative OP30, the voltage of the control input terminal 303 can be compared with the first preset voltage νι to detect the voltage level and the state of charge of the capacitor 302. The first control signal CT3G controls the charge and discharge time of the capacitor ground, and the unit CU30 determines the on state of the open SW32 and the SW34 according to the first control money CT3, so that the capacitor is not overcharged, and the output voltage can be effectively reduced. V〇ut's chopping noise. In order to further highlight the advantages of this embodiment, it is assumed that the input voltage I is W, and the required output voltage V〇ut is 8V, so the target capacitor is repeatedly charged at 3V. - Start charging the capacitor 3〇2 by the internal oscillator switch switches SW31, =32, SW33, SW34, SW35 such that the voltage of the capacitor 302 is greater than 3V, that is, the output voltage v〇ut is greater than: w. In this embodiment, when the capacitor 302 is charged, since the controller 3 is newly added to the comparator OP30', the capacitor transfer will not be overcharged to the control benefit 3〇0 according to the control wheel input terminal 3〇3 (four) pressure value, That is, the voltage value of the capacitor 3〇23 determines the charging time of the capacitor 302. Assume that the first preset voltage is 3.5*R31/(R3〇+R31)v. When the capacitor 3〇2 is charged to more than 3.5V, the control unit makes the switch 8 and 98-11-27 n to the stop capacitor. The charging is carried out so that (4) the output voltage is only 8.5V at the same time that the switches SW33 and SW3 are electrically conductive so that the wheel is crying 302. Wait for the power SW33, SW35 ^ S to fall outside, ^ pulse control switch tTv: ^ charge to 3.5V container 302 will be again repeated by the wave to the capacitor Λ is v. Therefore, in the psm pulse 〇.5V, in the process of the conventional gang:= process, the chopping noise is only flat and the chirp noise of the private circuit is low. μ 岐 岐 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , t not _ this possibility
二洲空制電路之控制輸入端3〇3選擇性耗接於J 根據控制輸入端303之電墨值 於屮=；： 電時間，且根據電荷幫浦單元3 01的 ===容器302的放電時間’就已經是符合 者能種實施例以便本領域具有通常知識 圖。2緣不為本發明另一實施例之電荷幫浦電路的電路 i太路。上所不’電何幫浦電路包括—電荷幫浦單元501 明：施例的控制電路。圖5與圖3不同之處在於圖 關sT 元5G1，其包括電容器502與撕，以及開 關 sw51、SW52、SW53、SW54、sw55、sw56、sw^ 12 Ι33Ό443. 9m正替換贾1 98-11-27 與SW58，其耦接關係如圖5。 本發明實施例的控制電路包括一控制輸入端5〇3以及 控制益500。控制益500包括一第一比較器〇P5〇、一第二 比較窃OP51以及一控制單元CU50。第一比較器〇P5〇將 控制輸入端5〇3的電壓與一第一預設電壓V1作比較，輸 ' 出一第一控制信號CT5〇。第二比較器OP51將電荷幫浦單 元501的輸出電壓Vout與一第二預設電壓V2比較之後輸 出一第二控制信號CT51。控制單元CU5 〇根據第一控制信 號CT50與第二控信號CT51決定開關SW51、SW52、 SW53、SW54、SW55、SW56、SW57、SW58 的導通狀態。 換句話說，控制單元CU50根據第一控制信號CT5()與第 二控制信號CT51控制電容器502與504之充放電時間。 圖5的電路與圖3的不同之處在於圖5的電荷幫浦單 元501是採用了 3倍壓電路架構的實施例，在本領域具有 通常知識者應當知道，其操作細節如同圖3實施例中的2 倍壓電路架構所述，故在此不予贅述。另外，本發明之應 • 用不應只偈限於2倍壓、3倍壓電荷幫浦電路結構二倍壓二 5倍壓乃錄意倍壓冑可應財發日狀其衍生之各種實施 例去降低漣波雜訊。 圖6繪示為圖3實施例之控制單元。控制單元CU3〇 至少包括—内部驗ϋ 〇sc、—多工n MUX6〇、一邏輯 加法器 AND60、數個反向器 INV60、lNV61、INV62、INV63 與數個正反器FF61、FF62。請同時參考圖3、圖4、圖6， 如前述之實施方式所描述，初始時，輸出電壓v〇ut較小， 13 ] m〇443- 曰修正-冷 98-11-27 内部摄蘆器〇SC合甚4 + 3〇1中的電路門關、，脈訊號去切換電荷幫浦單元 期吉㈣路開闕’反设對電容器302充電，重複數個访 期直到輸出電壓vout到 里賴個週 MUX60切換輸出伸為笾 而电此時多工器 寶浦單元^的電信號CT3J，其控制電荷 第—控制仲CT3G， SW32與SW34 ’且與 門_1 起控制電荷幫浦單元3〇 1巾的電路 開闕SW3J、SW32、SW33、期4虚 Μ電路 電容器302充電時間。 /、 以用來控制 综上所述，本發明在控制電路因採用 、工制輸入端303之電壓值控制電荷幫浦單° κ 决定電容哭309 〇1’進而 減少缝波雜訊，並且增加電路的間，因此可達到 ，然本發明已經以較佳實施例揭露如上，然 限疋本發明’任何所屬技術領域具有通常 離本發明之精神和範圍内，當可作些許二’不 ::本發明之保護範圍當視後附之申請專利範=者 【圖式簡單說明】 圖1綠示為習知的電荷幫浦電路。 圖2繪示為圖1之動作波形圖。 ==發明實施例之電荷幫浦電路的電路圖。 固4、、·日不為圖3實施例之動作波形圖。 圖5繪示為本發明另一實施例之電荷幫浦電路的電路圖。 1330443. -* - β · , 99. 99-2-26 圖6繪示為圖3實施例之控制單元。 【主要元件符號說明】 100、 300、500 :控制器 101、 3(Π、501 :電荷幫浦單元 102、 302、502、504 :電容器 303、503 :控制輸入端The control input terminal 3〇3 of the two-vacancy circuit is selectively consuming J according to the electric ink value of the control input terminal 303 at 屮=;: electrical time, and according to the charge pump unit 301 === container 302 The discharge time 'is already an embodiment of the conformity so that the field has a general knowledge map. 2 is not the circuit of the charge pump circuit of another embodiment of the present invention. The power circuit does not include the electric charge pump unit 501: the control circuit of the embodiment. Figure 5 differs from Figure 3 in that Figure sT element 5G1, which includes capacitor 502 and tear, and switches sw51, SW52, SW53, SW54, sw55, sw56, sw^ 12 Ι33Ό443. 9m is replacing Jia 1 98-11- 27 and SW58, the coupling relationship is shown in Figure 5. The control circuit of the embodiment of the invention comprises a control input terminal 5〇3 and a control benefit 500. The control benefit 500 includes a first comparator 〇P5〇, a second comparison OP51, and a control unit CU50. The first comparator 〇P5〇 compares the voltage of the control input terminal 5〇3 with a first preset voltage V1, and outputs a first control signal CT5〇. The second comparator OP51 compares the output voltage Vout of the charge pump unit 501 with a second predetermined voltage V2 and outputs a second control signal CT51. The control unit CU5 determines the conduction states of the switches SW51, SW52, SW53, SW54, SW55, SW56, SW57, SW58 based on the first control signal CT50 and the second control signal CT51. In other words, the control unit CU50 controls the charge and discharge times of the capacitors 502 and 504 in accordance with the first control signal CT5() and the second control signal CT51. The circuit of Figure 5 differs from that of Figure 3 in that the charge pump unit 501 of Figure 5 is an embodiment employing a 3x voltage circuit architecture, as will be appreciated by those of ordinary skill in the art, the operational details of which are implemented as in Figure 3. The 2 times voltage circuit architecture in the example is described, so it will not be described here. In addition, the application of the present invention should not be limited to 2 times the voltage, 3 times the voltage charge, the circuit structure, the double voltage, the second and the 5 times the pressure, the recording pressure, the various pressures, and the various embodiments. To reduce chop noise. Figure 6 is a diagram showing the control unit of the embodiment of Figure 3. The control unit CU3〇 includes at least an internal test 〇sc, a multiplex n MUX6〇, a logical adder AND60, a plurality of inverters INV60, 1NV61, INV62, INV63 and a plurality of flip-flops FF61, FF62. Please refer to FIG. 3, FIG. 4 and FIG. 6 at the same time. As described in the foregoing embodiments, the initial output voltage v〇ut is small, 13] m〇443- 曰 corrected-cold 98-11-27 internal reed device 〇SC is even 4 + 3〇1 in the circuit gate, the pulse signal to switch the charge pump unit period (four) road opening 反 'reset the capacitor 302 to charge, repeat several visits until the output voltage vout to Li Lai The weekly MUX60 switching output is extended to the electric signal CT3J of the multiplexer Baopu unit ^, which controls the charge first - control the secondary CT3G, SW32 and SW34 'and the gate 1 controls the charge pump unit 3〇 The circuit of one towel is open for charging time of SW3J, SW32, SW33, and period 4 imaginary circuit capacitor 302. In order to control the above, the control circuit in the control circuit uses the voltage value of the input terminal 303 to control the charge pump, and the voltage is reduced by 309 〇 1', thereby reducing the stitch wave noise, and increasing </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The scope of protection of the present invention is set forth in the appended claims. [FIG. 1 Green is a conventional charge pump circuit. FIG. 2 is a waveform diagram of the operation of FIG. 1. == Circuit diagram of the charge pump circuit of the inventive embodiment. The solid 4, the day is not the action waveform diagram of the embodiment of Fig. 3. FIG. 5 is a circuit diagram of a charge pump circuit according to another embodiment of the present invention. 1330443. -* - β · , 99. 99-2-26 FIG. 6 is a diagram showing the control unit of the embodiment of FIG. 3. [Main component symbol description] 100, 300, 500: controller 101, 3 (Π, 501: charge pump unit 102, 302, 502, 504: capacitor 303, 503: control input
Vin :輸入電壓 SW11、SW13、SW14、SW15、SW31、SW32、SW33、 SW34、SW35、SW51、SW52、SW53、SW54、SW55、 SW56、SW57、SW58 :開關 CU10、CU30、CU50 :控制單元 ΟΡΙΟ、OP30、OP31、OP50、OP51 :比較器 R10、Rll、R30 ' R31、R32、R33、R50、R51、R52、 R53 :電阻 CU、C3卜C51 :電容Vin : Input voltage SW11, SW13, SW14, SW15, SW31, SW32, SW33, SW34, SW35, SW51, SW52, SW53, SW54, SW55, SW56, SW57, SW58: Switch CU10, CU30, CU50: Control unit ΟΡΙΟ, OP30 , OP31, OP50, OP51: Comparator R10, R11, R30 ' R31, R32, R33, R50, R51, R52, R53: Resistor CU, C3 Bu C51: Capacitor
Vout :輸出電壓Vout: output voltage
Vref、V卜V2 :預設電壓 CT10、CT30、CT3卜 CT50、CT51 :控制信號 OSC :内部振盪器 INV60、INV61、INV62、INV63 :反向器 MUX60 :多 ji 器 AND60 :邏輯加法器 FF61、FF62 :正反器 15Vref, V Bu V2: Preset voltage CT10, CT30, CT3 Bu CT50, CT51: Control signal OSC: Internal oscillator INV60, INV61, INV62, INV63: Inverter MUX60: Multi-ji AND60: Logic adders FF61, FF62 :Flip-flops 15