1297974 ^f.d〇c/y 九、發明說明 【發明所屬之技術領域】 舻s, t^明是有關於一種脈波寬度調變控制電路，且 =有關於一種由可調振幅及頻率三角波產生 能^ p據目前負載系統之工作狀態，輸出隨工作狀 :::振幅及頻率之三角波，以控制脈波 ： J電:而曰改.變其輸出爾 千 Λ徒幵負載糸統之暫態響應。 【先前技術】 曰一脈波寬度調變（Pulse Width Modulation，簡稱PWM) 傳統且實用的控制方法，其廣泛的被應用在眾 夕八回杈電路的控制系統中，如升壓電路、降壓電 路、推挽式電路、半橋電路以及全橋電路。在這些電 $中，係利用所得到的回授電壓經由誤差放大器 管 (=r0r Amplifie〇處理後，與三角波產生器輸出: 固疋振幅的三角波（Triangle Wave )經由比較器運 後，=出一組隨著誤差變化調變寬度的脈波。 ☆凊參照第5圖，其繪示習知一種負載系統之脈沒 覓又凋交控制電路方塊圖。習知之負載系統50包氺 脈波^變控制（PWM)電路5⑻、切換開關55〇以： 負載^路560。負載系統％之連接關係為切換開系 550包性連接至電壓源、脈波調變控制（pwM)電卑 5〇〇以及接地電位端，負載電路56〇之輸入端562 , 性連接至切換開關55〇，負載電路56〇之輸出端％ Ι297Θ74 wf.doc/y 至接地電位端’脈波調變控制（PWM)電 路500剩接至負载電路56〇之輸出端μ。 在習知之脈波調變控制（PWM)電路5⑻中， 其包，三角波產生器51()、誤差放大器52g、比較器 3:，，路54〇。而誤差放大器52〇之負端電性 ίϋ負載電路560之輸出端564，以接收負載電路 △專來之回授電壓，誤差放大器52〇之正端則接收 二麥考電壓，比較器530之正端電性連接至誤差放大 為520,比較器53〇之負端電性連接至三角波產生器 」〇而比較态530之輸出端則連接至驅動電路“ο。 明合併麥照第5圖與第6目，此第6圖係繪示習知一 ，了角波^生态輸出之三角波、誤差信號與脈波控制 信號之示意圖。習知之脈波調變控制（pwM)電路 500之動作方式為誤差放大器52〇根據所接收到之回 授電，與參考電壓作誤差運算，然後輪出一誤差信號 (如第6圖所繪示之誤差信號波形6〇4)至比較器 5 3 0。而二角波產生器51 〇則在啟動後即輸出固定振 ，之三角波（如第6圖所繪示之三角波602 )至比較 器^30。最後，比較器53〇則以誤差信號（6〇4)與 ，疋振幅之二角波（602 )作比較後輸出驅動信號。 最後，由驅動電路540輸出脈波控制信號（如第^ 6 圖所繪示之脈波控制信號之波形606)。 在習知之負載系統50中，切換開關550接收到 比較裔530傳來之脈波控制信號後，即根據此脈波控 制k號控制電壓源是否供給操作電壓給負載電路 I2979i^4wf.d〇c/y 560 ° 有下所述’習知之脈波寬度調變控制電路具 波控口：度調變控制電路中，由於脈 誤差所調變V此回疋授電=電壓與參考電壓產生之 信號之寬度產生影響。电土、雜5fl會直接對脈波控制 (2)擁有靈敏度高之習知 電路的負载系統會因為 =J，控制 態響應，但卻會造成暫能1吊t的5又疋而有較佳暫 穩定度。 珉9心過夕及大幅降低系統穩態的 ο)擁有靈敏度低之 電路的負载系統會因為時么=度:周變控制 態響應，但系統達到#能；^吊^设定而有較差暫 系統穩態的穩定度。一、守間g因此加長，而增加 【發明内容】 應用其之負载：：目其::::在提供-種控制電路與 角波產生蒸根據回授電壓控二電路中的可調變三 變三角波。文動而改變振幅及頻率大小之可調 本發明的目的再 _ 負载系統，其# #)J 、一種控制電路與應用其之 負恭会把―Γ利用控制電路中之可，趨- & / 負载系統在擁有較佳 了凋茭二角波，使 s應的情況下，也能 8 I2979^4wf.d〇c/y 良的暫態響應。 本發明提出一種控制電路，包含一可 產iL·一誤差信號產生器、一脈波信號產生= 二驅動，路。該可調變三角波產生器根據指示一 琶路狀悲之指示訊號而調整可調變二、 幅及頻率，以輸出一可調變三角波 η:訊號與-參考電㈣誤差運算:用。 該脈波信號產生器電性轉接至該可調 又一角波產生為與該誤差信號產生器，接收並 與：灣三角波作比較，用以輸出-脈空 口 k而忒驅動電路電性耦接至該脈波芦？卢產 器’接收”並轉換該脈波控制信號，用以輸出驅D動;言號生 本發明的較佳實施例所述，上述之可調變°三 以回授電壓與參考電麗之差值決定所 二考波的振幅及頻率大小。當回授電壓 波產生以包 圳*匕枯弟一振幅及第一頻率諮一 壓參考電壓之差值低於暫態判斷電 之第二振pf器輸出包括漸進式增大振幅 三角波。當回低：率之第二頻率之可調變 角波產生哭幹=大於等於參考電壓時’可調變三 三角波。包括第三振幅及第三頻率之可調變 可應ί:較:實施例所述’上述之控制電路 而笔路、馳回電路、升壓電路、降壓電路、 :挽式電路、半橋電路與全橋電路等多種負載系統 來變三角波產生器，因此可根據 變：角輸出適合目前工作狀態之可調 稃H匕、，仔/載糸統能在报快的時間内便達到 Μ ;下文特舉一較佳實施例，並配合所附圖式，作占 【實施方式】 綱、第1圖’其緣示依照本發明—較佳實施例的一1297974 ^fd〇c/y IX. Description of the Invention [Technical Fields of the Invention] 舻s, t^明 is related to a pulse width modulation control circuit, and = related to a triangular wave generated by an adjustable amplitude and frequency ^ p According to the current working state of the load system, the output follows the working frequency::: triangular wave of amplitude and frequency to control the pulse wave: J electricity: and tampering. Change its transient response of the output Λ Λ 幵 幵 load system . [Prior Art] Pulse Width Modulation (PWM) Traditional and practical control method, which is widely used in the control system of the eight-circuit circuit, such as boost circuit, step-down Circuits, push-pull circuits, half-bridge circuits, and full-bridge circuits. In these electricity $, the obtained feedback voltage is processed by the error amplifier tube (=r0r Amplifie〇, and the triangular wave generator output: the triangular wave of the fixed amplitude is transported via the comparator, = one The group adjusts the pulse width of the width as the error changes. ☆ 凊 Referring to Figure 5, it shows a block diagram of a conventional load cell with no pulse and a control circuit. The conventional load system 50 includes a pulse wave. The control (PWM) circuit 5 (8) and the changeover switch 55〇 are: a load circuit 560. The connection relationship of the load system % is a switching open system 550 package connection to a voltage source, a pulse modulation control (pwM) power 卑 5〇〇, and The ground potential terminal, the input terminal 562 of the load circuit 56〇, is connected to the switch 55〇, the output terminal of the load circuit 56〇% Ι297Θ74 wf.doc/y to the ground potential terminal 'pulse modulation control (PWM) circuit 500 It is left to the output terminal μ of the load circuit 56. In the conventional pulse-wave modulation control (PWM) circuit 5 (8), its package, the triangular wave generator 51 (), the error amplifier 52g, the comparator 3:, the path 54〇 And the negative terminal of the error amplifier 52〇 The output terminal 564 of the load circuit 560 receives the feedback voltage exclusively used by the load circuit △, and the positive terminal of the error amplifier 52 接收 receives the second mai test voltage, and the positive terminal of the comparator 530 is electrically connected to the error amplification to 520. The negative terminal of the comparator 53 is electrically connected to the triangular wave generator", and the output of the comparison state 530 is connected to the driving circuit "o. The fifth and sixth objects of the merged photo, the sixth figure shows The first one is a schematic diagram of the triangular wave, the error signal and the pulse wave control signal of the angular wave ^ ecological output. The conventional pulse wave modulation control (pwM) circuit 500 operates in the manner of the error amplifier 52 〇 according to the received feedback Electric, with the reference voltage for error calculation, and then rotate an error signal (such as the error signal waveform 6〇4 shown in Figure 6) to the comparator 530. The octave generator 51 〇 is activated That is, a fixed vibration, a triangular wave (such as the triangular wave 602 shown in Fig. 6) is outputted to the comparator ^30. Finally, the comparator 53A is an error signal (6〇4) and a two-dimensional wave of the amplitude (602). The output drive signal is compared after comparison. Finally, the drive circuit 540 The pulse wave control signal (such as the waveform 606 of the pulse wave control signal shown in Fig. 6) is output. In the conventional load system 50, after the switch 550 receives the pulse wave control signal from the comparator 530, According to the pulse wave control, the control voltage source of k is supplied with the operating voltage to the load circuit I2979i^4wf.d〇c/y 560 °. The conventional pulse wave width modulation control circuit has a wave control port: degree modulation In the control circuit, due to the pulse error modulation V, the feedback power supply voltage has a influence on the width of the signal generated by the reference voltage. Electric soil, miscellaneous 5fl will directly control the pulse wave. (2) The load system of the conventional circuit with high sensitivity will respond to the control state due to =J, but it will cause the temporary energy 1 to be 5 and better. Temporary stability.珉9 heart and night and greatly reduce the system steady state ο) The load system of the circuit with low sensitivity will be because of the degree = degree: the control state response of the cycle, but the system reaches #能; ^ hang ^ set and there is a poor The stability of the system steady state. First, the custodian g is therefore lengthened, and increased [invention content] The load applied to it:: the purpose of the :::: in the provision of a kind of control circuit and the generation of steam in the corner wave according to the adjustable voltage control circuit 2 Change the triangle wave. The purpose of the invention is to change the amplitude and frequency of the invention. The load system, the ##)J, a control circuit and the application of the same will be used in the control circuit. / The load system can also have a good transient response of 8 I2979^4wf.d〇c/y if it has better declining two-angle waves and makes s should. The invention provides a control circuit comprising an iL· an error signal generator, a pulse signal generation = two drive, and a path. The adjustable triangular wave generator adjusts the adjustable second, amplitude and frequency according to the indication signal indicating a sinuous sorrow to output a tunable triangular wave η: signal and - reference electric (four) error operation: used. The pulse wave signal generator is electrically switched to the adjustable further angle wave generated and the error signal generator is received and compared with: a bay triangle wave for outputting a pulse air port k and the driving circuit is electrically coupled To the pulse wave? The luminaire "receives" and converts the pulse wave control signal for outputting the drive D; the horn is produced according to the preferred embodiment of the present invention, and the above-mentioned adjustable change is three to feedback the voltage and the reference The difference determines the amplitude and frequency of the second test wave. When the feedback voltage wave is generated, the difference between the amplitude of the test and the first frequency and the reference voltage of the first frequency is lower than the second vibration of the transient judgment. The output of the pf device includes a progressively increasing amplitude triangular wave. When the low frequency: the second variable frequency of the variable angular wave produces a crying dryness = greater than or equal to the reference voltage, the variable three triangular wave is included. The third amplitude and the third frequency are included. The adjustable variable can be compared with the following: the above-mentioned control circuit and the stroke, the circuit, the boost circuit, the step-down circuit, the pull circuit, the half bridge circuit and the full bridge circuit The system is to change the triangle wave generator, so it can be adjusted according to the change: the angle output is suitable for the current working state, and the battery can reach the time in the fast time; the following is a preferred embodiment. And with the drawing, as an example, FIG 1 'in accordance with the present invention illustrating its edge - of a preferred embodiment
脈波寬度調變控制電路100包括可調變三角、H 】及|__生電路’該驅動訊號赵電路包‘ ^虎產生⑤120、脈波錢產生器13()與驅 备周變三f波產生器11 〇接收參考電壓2與指 不負載電路狀態之回授電壓作運算以決定輸 ff的頻率及振幅，誤差信號產生器120對參考電[ ^與回授㈣作運算而輸出誤差信號。 心 生器，她接至可調變三角波產生器 產生器U0’以比較誤差信號與可調變三角波' 後輸出脈波控制信號，最後驅動電路14〇耦接脈=仿 唬產生器130,根據脈波控制信號產生至少一驅= 號，以控制負载系統之切換開關之導通與關閉' σ 其中參考電壓1與參考電壓2可以是相同或不同 10 1297974 w f · d 〇 c/y 之參考電壓’即該可調變三角波產生哭 可接收相同之參考電壓i回授“ Ϊ，二授電壓來調整三角波的振幅及頻 ί二ϊΐ善負載系統的暫態響應、減少負載 糸、、先達到穩恶的響應時間。再者，可可大 'The pulse width modulation control circuit 100 includes an adjustable variable triangle, H 】 and |__ raw circuit 'the driving signal Zhao circuit package' ^ tiger generation 5120, pulse wave generator 13 () and the drive change three f The wave generator 11 〇 receives the reference voltage 2 and the feedback voltage of the state of the unloaded circuit to calculate the frequency and amplitude of the MV, and the error signal generator 120 operates the reference voltage [^ and the feedback (4) to output the error signal. . The heart device, she is connected to the adjustable triangular wave generator generator U0' to compare the error signal with the adjustable triangular wave' after outputting the pulse wave control signal, and finally the driving circuit 14 is coupled to the pulse = imitation generator 130, according to The pulse wave control signal generates at least one drive = sign to control the turn-on and turn-off of the switching system of the load system 'σ where the reference voltage 1 and the reference voltage 2 may be the same or different 10 1297974 wf · d 〇 c / y reference voltage ' That is, the adjustable triangular wave generates crying and can receive the same reference voltage i feedback "Hey, two voltages are used to adjust the amplitude and frequency of the triangular wave, and the transient response of the load system is reduced, the load is reduced, and the first is achieved. Response time. Again, cocoa big '
:的響應超過目標值及增加負载系統在穩態的J 々—請合併第1圖、第Μ圖與第迚圖，第^ 义一角波產生益輸出之分段的可調變二 連續的可調變三角波示意圖。 角波不思圖，與 法。^本兄，之分段的可調變三角波之實施方 可碉鐵-m波寬度調變控制電路1 〇 〇於當 產生$110判斷得知回授電墨與參考 設之暫態判斷電麼時（例如：於啟 動或觸舍過程），可調變三角波產生器u 較小、頻率較高之三角波（如第2A”u ，或2〇4)，使系統可以快速地將輪出調；往： 使負載快速達到臨界啟動值。因此，本發明 好的暫態響應’並減少負載系統達到穩態的響 當可調變三角波產生器11G判斷得带 與參考電壓之差值低於預設之暫態判斷電壓(亦= 產值由大漸漸變小時，即負載已達到臨界啟動值而進 角波產生™出振 〜自ϊ / 之三角波（如第2A圖所 =得知回授電屡大於等於參考 忑5生益no則輸出振幅最大、頻率最低之三角 ί日i t f2 A圖所緣之三角波2 0 6或2 0 8 )。因此，本 ，月，制負載系統的輸出超過預定值之幅度及增 加負载系統在穩態的穩定度。 ^弟2B圖之連續的可調變三角波之實施方法，宜 康回授電塵與參考電壓之差值來連續調整三角 ^ :辰幅及頻率，當差值較大時，其振幅較小、頻率 季父南丄而差值較小時’其振幅較大、頻率較低。 汉田'名，本發明之二角波之振幅、頻率之調整在實 ^士自不以上述實施例為限。例如對於負載電路為在 ^過程需要較低（或特定範圍）的振幅或/及頻率， 田根據回杈電壓與參考電壓之差值判斷其處於觸發 過私％，提供该適合之振幅及頻率，而在暫態時，才 以較低之振幅及較高之頻率而使暫態時間有效缩 短。因此，本發明可設定不同判斷條件，以依據該判 Μ"條件提供最佳頻率、振幅之三角波。 接著請參照第3圖，其繪示依照本發明一較佳實施 例的一種可調變三角波產生器之電路圖。在本實施例 中，僅解說一種可調變三角波產生器11〇之電路，而 在設計人員設計可調變三角波產生器11〇時自當不 以此為限。此可調變三角波產生器11〇包括第一比較 12 I297974twfci〇c/y 器3〇ί/第二比較器304、反及閘（NAND) 30ό與 308、第三比較器31〇、開關312與314、充電電流源 316、放電電流源318與電容32〇。 在本實施例中，第一比較電壓及第二比較電壓係 根據回授電壓與參考電壓而產生，用以決定三角波之 振幅。當可調變三角波產生器Π0之電容32〇處於充 =的狀恶時，開關312將被第三比較器31〇關閉，使 =充電電流源3 16能將電流充至電容32〇。此時，可 凋變二角波產生器110所輸出之三角波波值（電容 320之電壓）將逐漸上昇。當三角波波值上昇高於 :比較電壓（VH)時，第一比較器3〇2輸出之電壓 二Ζί至邏輯0所代表之電位。此時，反及閘306 的輸出電屡會改變而上昇至邏輯j代表之電位。而由 2電的過程中三角波代表之電位會高於第二比較 维I，^) ’所以第二比較器3〇4輸出之電壓會持續 ί : Λ 表之電位。此時，反及閘3 〇 8的二端 :邏輯二第二&較器3〇4的輸出均 壓合下降至ίΐ ，反及間308輸出之電 土曰下~至邏輯〇代表之電位。因此， 310的正端輸入之邏輯〗代表之 乂^ 邏輯〇代表之電位的位準高。第三比=32 電塵則會上昇至_ !代表之、Ί1:輸出之 312 iTP. 代衣之电位，而重新將開關 7開（turn 〇ff)，並中斷充電電流源+ ^ 320=電，而完成充電的過程級源316對电各 田第—比較為310輸出之電壓為邏輯丨代表之電 13 I297974twf.doc/y 二開關314會導通（turn 〇ff)而使電容32〇處 2放藏的狀態，放電電流源318將電流由 0 Π因此，三角波所代表之電位（波值）將逐漸下 :二：角？代表之電位下降低於第二比較電壓 ΓΛΓ二二比較器304輸出之電壓會下降至邏 ΐ D 此時’反及閘3 0 8的輸出電壓會改 1上昇至邏輯1代表之電位。由於放電的過程中， 三角波代表之電位將低於第一比較電壓（VH)， 比較器302的輸出電壓會持續維持在邏輯1代表之* :二時1及閘3 〇 6的二端輸入、反及閘3 : ^弟-比較器302的輸出均為邏⑴代表之電位的 十月况下，反及閘306的輸出電壓會下降至邏輯〇 2位。因此，第三比較器31〇的正端輸入 〇 3 ·比負端輸入之邏輯1代表之電位的位 準低’弟三比較器310的輸出會下降至邏輯〇代表之 =’亚重新將開_ 314打開Upej〇 電流對電容32〇的放電，以完成放電的^程: 才弟比車乂益302的第一比較電壓VH合 組比較低的，使第-比較電壓γΗ θ 壓VL間的電麼差會相對較小，且充電電 如乂^ 放電電流源318為定電流源。此時，可織二、 生器110會產生一組振幅較小且頻率高'1^^读。 在本實施例中，當回授電壓與參考7 ^ ° 漸接近時’第-比較器-的第-比 14 1297974^.^10(^ it:、可凋變二角波產生器110可因此產生-組振 巾田k漸增加且頻率逐漸降低之三角波。 1本實施例中，當回授電壓與參考電壓的差距很 接近％，弟比較器302的第一比較電壓VH會上昇 ，（至最大值。此時，可調變三角波產生器U 〇可 此產生組隶大振幅且頻率最低之三角波。 請接著參考第4A圖，其繪示依照本發明一較佳 施例的一種應用可調變三角波產生器之升Μ電路之電 圖。在本實施射，負㈣統4G係、電性減 电壓源，且包括脈波寬度調變控制電路400、切換 開關450與升壓電路460。 、 在本實施例中，升壓電路460具有輸入端462、 別出鈿464及一受控端466。此升壓電路46〇之輪入 端462係電性耦接至電壓源’受控端466並根據該切 ，，關450之控制選擇性地接收電壓源供給之操作 电壓。其次，脈波寬度調變控制電路400係電性耦接 至升C电路460之輸出端464，而脈波寬度調變控制 電，4 0 〇包括可調變三角波產生器410、誤差信號產 生器420、脈波信號產生器430與驅動電路44〇。而 切換開關450則具有第一端452、第二端454盘第三 = 456,此切換開關45〇之第一端452電性耦接至驅 山电路440 ’第二端454電性耦接至受控端466，第三 :“56電性耦接至接地端，且切換開關州係根據驅 動電路440之驅動信號使升壓電路46〇轉換該電壓源之 作電壓。 μ 在本貫施例中，可調變三角波產生器41〇係接 :壓電路460之輸出端_傳來之回授電壓，並以預 e又之参考電壓與回授電壓作調幅及頻率運 出 隨回授電壓之變動而改變振幅、頻率大小之可調= 角次，誤差信號產生器420係根據回授電塵* 誤是運算’以輸出誤差信號。接著，脈波 化唬產生益430為電性耦接至可調變三角波產生器 :二1;=號^产器42〇，接收並對誤差信號與可 I二—角波作比較，以輸出脈波控制信號。最後，驅 «I!；40 430， 玉虎以輸出驅動k號至切換開關45〇。 /1在本貝施例中，負載系統40之運作為當切換開 時，電壓源供給升壓電路⑽動作所需 j作 反之’當切換開關450被導通時，電壓 源停止供給操作電壓仏斗厭 波產&抑41Λ日了甩土、、、口升壓電路460。而可調變三角 ΐίί斋410則以升屢電路460之輸出端464傳來之 口技屯壓與預設之參考電壓作調幅運算。 判辦電㈣參考電壓之差值超過預設之暫態 r;f時，可判斷得知升愿電路460工作在啟始狀 ;:幅ΓΠ二變三角波產生器410係輪出包括第-裉T田及弟一頻率之可調變三角波。 犀日士當二授4電壓與參考電壓之差值低於暫態判斷電 日^，、可升壓電路460工作在暫態狀態。此 振受二4產生器41 〇係輸出包括漸進式增大 又田弟一振幅及漸進式降低頻率之第二頻率的可 16 Ι297^74^ί.ά〇〇/γ 調變三角波。 當回授電壓大於等於參考電壓時（或回授電题盥 參考電壓之差值低於穩態判斷電壓），可判斷得二^ 壓電路460工作在穩定狀態（或進入穩定狀能）。 可調變三角波產生器41〇係輸出包括第三^ 弟二頻率之可調變三角波。 及 ，如之前所述，可調變三角波產生器410輸出 率及振幅可根據負載電路之實際操作所需調整， 電電流源316及放電電流源318不限於定電流源、， =於如上述啟始狀態為最高頻率、最小振幅，斬能 ，恶為次高頻率、次小振幅’穩定狀態為最低頻公二 取^振幅。因此，第一比較電壓及第二比較電壓、 電電流源及放電電流源可依預設之判斷條件^ 疋比較電壓及電流，而達到提供最佳振幅、頻之二、 角波。 -- 口月接著麥考第4Β圖，其繪示依照本發明一較每 =-種應用可調變三角波產生器之降壓電路之？ 中之井^其與第4Α圖不同之處僅在於將第4Α圖 ΗΙ1 4^】路460更改為降壓電路470以及將該切換 幵’關〇電性耦接於該電壓源及降壓電路470外，1 運作方式則為與第4Α圖相近。 /、 清接著參考第4C圖，其繪示依照本發明一較 τ調變三角波產生器之推挽式電路“ 沒有耦：：弟4 A圖不同之處在於推挽式電路4 7 2 义、 鬼壓源，此推挽式電路4 72係於切換開關 17 I2979^74twf d 〇c/y :產$生感應電流。而在脈波寬度調變控制 :中，；作方式則與第4A圖為相同。 本發日與第4f圖，其分別繪示依照 、種應用可调變三角波產生器之 二塊:塊與圖種應用可調變三他 第4C在:之電=;:圖&不同之處僅在於將 其動作^則均l=c47圖2 =為全橋電路以’而 第t ’其與第4C目不同之處僅在於將 豆動作H式電路472更換為半橋電路476，而 其動作方式則均與第4C圖相同。 後之較2施例中’各種負載電路被啟動 態後，才能達至ίί定J需太要f歷啟始狀態、暫態狀 能之狀態列舉，；=:;= 發明只是將負載電路可 千但目不以此為限。 在本發明之較伟會絲/丨士 12〇、420可以是^\/%例中，誤差信號產生器 在本發明之^^旦不以此為限。 13〇、430可以是貝^例中，脈波信號產生器 ^ b車乂态，但不以此為限。 載電路之二之㈡，中’暫態判斷電壓可視負 .,2 '由5又§十人貝視需求預設。 考電壓產气!實f例中，參考電壓可以是由參 —角波產生器之參考電壓之值可由 18 I297974twf.d〇c/y 包路5又5十人員根據實際需要來設定。 在本發明之較佳實施例中，負載系統40可以是 應用可調變三角波產生器之前端電路或驰回 yba\k )電路，但均不以此為限。 綜合以上所述，本發明之脈波寬度調變控制電路 人怎用其之負載系統具有下列優點： (1)本發明之脈波寬度調變控制電路盎廡用其 ί ί ΐ! f ’其可利用誤差積分器代替誤差放；器广’ 名又传更好·佳的抗雜訊能力。 之备本發明之脈波寬度調變控制電路與應用其 ϋ載糸統的可調變三角波產生器，可有效 載系統的暫態響應。 其 (μ本發明之脈波寬度調變控制電路與應用其 時門ί ί統’可㈣較佳暫態響應的條件m統的 、吊，使負載系統在穩態的穩定度提高。 之自it)本發明之脈波寬度調變控制電路與應用其 值。、糸、、、克可大巾田預防負载系統的響應超過目標 之倉本毛明之脈波寬度調變控制電路與應用其 員載糸統，可減少負载系統達到穩態的響應時間。 之貧^明^脈波寬度調變控制電路與應用其: The response exceeds the target value and increases the J 々 of the load system in the steady state—please combine the first graph, the second graph and the second graph, and the first corner wave produces the segment of the benefit output. Modulated triangular wave diagram. The angle wave does not reflect, and the law. ^本兄, the implementation of the tunable triangular wave of the segment can be 碉 iron-m wave width modulation control circuit 1 当 when generating $110 to determine the feedback state of the feedback ink and the reference setting (for example, during the start-up or touch-off process), the triangular wave generator u with a smaller, higher frequency triangle (such as 2A"u or 2〇4) allows the system to quickly adjust the wheel; : The load is quickly reached to the critical starting value. Therefore, the good transient response of the present invention reduces the load system to reach a steady state. When the adjustable triangular wave generator 11G determines that the difference between the band and the reference voltage is lower than the preset value Transient judgment voltage (also = output value from large gradual hour, that is, the load has reached the critical start value and the angle wave generates TM oscillation ~ self ϊ / triangle wave (as in Figure 2A = know that the feedback power is greater than or equal to Reference 忑5 生益 no, the output amplitude is the largest, the lowest frequency triangle ί日it f2 A map of the triangle wave 2 0 6 or 2 0 8 ). Therefore, the output of this, month, system load system exceeds the predetermined value And increase the stability of the load system in the steady state. ^ Brother 2B map The continuous implementation of the adjustable triangular wave, Yikang feedback the difference between the electric dust and the reference voltage to continuously adjust the triangle ^: the amplitude and frequency, when the difference is large, the amplitude is small, the frequency is the father of the south When the difference is small, 'the amplitude is larger and the frequency is lower. Hantian' name, the amplitude and frequency adjustment of the two-angle wave of the present invention are limited to the above embodiments. For example, for the load circuit In order to require a lower (or specific range) amplitude or/and frequency in the process, the field judges that it is in the triggering over % according to the difference between the return voltage and the reference voltage, providing the appropriate amplitude and frequency, while in the transient state In this case, the transient time is effectively shortened with a lower amplitude and a higher frequency. Therefore, the present invention can set different judgment conditions to provide a triangular wave of the best frequency and amplitude according to the condition of the judgment. 3 is a circuit diagram of a tunable triangular wave generator according to a preferred embodiment of the present invention. In this embodiment, only a circuit of the tunable triangular wave generator 11 , is illustrated, and the designer Design can The modulated triangular wave generator 11〇 is not limited thereto. The adjustable triangular wave generator 11〇 includes a first comparison 12 I297974twfci〇c/y device 3〇ί/second comparator 304, an inverse gate ( NAND) 30ό and 308, third comparator 31〇, switches 312 and 314, charging current source 316, discharging current source 318 and capacitor 32〇. In this embodiment, the first comparison voltage and the second comparison voltage are based on The voltage is applied to the reference voltage to determine the amplitude of the triangular wave. When the capacitance 32 of the adjustable triangular wave generator Π0 is in the charge state, the switch 312 will be turned off by the third comparator 31, so that = charging The current source 3 16 can charge the current to the capacitor 32. At this time, the triangular wave value (the voltage of the capacitor 320) outputted by the binary wave generator 110 can be gradually increased. When the triangular wave value rises above: the comparison voltage (VH), the voltage output from the first comparator 3〇2 is equal to the potential represented by the logic 0. At this time, the output power of the anti-gate 306 is changed repeatedly to rise to the potential represented by the logic j. In the process of 2 electric power, the potential represented by the triangular wave will be higher than the second comparative dimension I, ^) ', so the voltage of the output of the second comparator 3〇4 will continue to ί : 电位 the potential of the table. At this time, the output of the opposite end of the gate 3 〇8: the second output of the logic 2 second & the comparator 3〇4 is reduced to ΐ, and the potential of the 308 output is lower than the potential represented by the logical 〇 . Therefore, the logic 〖 of the positive input of 310 represents the level of the potential represented by 〇^ 〇. The third ratio = 32 electric dust will rise to _ ! representative, Ί 1: output 312 iTP. Replace the potential of the clothing, and re-open the switch 7 (turn 〇 ff), and interrupt the charging current source + ^ 320 = electricity And the process level source 316 that completes the charging is the same as the electric field. The voltage of the output of the 310 is the logic 丨 represents the electricity 13 I297974twf.doc / y The second switch 314 will be turned on (turn 〇 ff) and the capacitor 32 〇 2 In the state of being stored, the discharge current source 318 will pass the current from 0 Π. Therefore, the potential (wave value) represented by the triangular wave will gradually decrease: two: angle? The representative potential drops below the second comparison voltage. The voltage output from the comparator 22 drops to logic D. At this time, the output voltage of the reverse gate 3 0 is changed to 1 to the potential represented by logic 1. During the discharge process, the potential represented by the triangular wave will be lower than the first comparison voltage (VH), and the output voltage of the comparator 302 will continue to be maintained at the logic 1 representative of *: 2:1 and the 2nd input of the gate 3 〇6, In contrast to the gate 3: ^ The output of the comparator 302 is the logic of the potential represented by the logic (1), and the output voltage of the gate 306 is lowered to the logic 〇 2 bit. Therefore, the positive terminal input 〇3 of the third comparator 31〇 is lower than the level of the potential represented by the logic 1 of the negative terminal input. The output of the third comparator 310 is lowered to the logical 〇 representative = 'Asia re-opens _ 314 turns on the discharge of Upej 〇 current to the capacitor 32 , to complete the discharge process: The younger brother is lower than the first comparison voltage VH of Che Yiyi 302, so that the first comparison voltage γ Η θ is between VL The electrical difference will be relatively small, and the charging current such as the discharge current source 318 is a constant current source. At this time, the woven second generator 110 generates a set of amplitudes with a small amplitude and a high frequency of '1^^ reading. In the present embodiment, when the feedback voltage is gradually closer to the reference 7 ^ °, the first-to-comparator of the first-comparator- 14 is 1297974^.10 (^ it: the fadeable dipole generator 110 can be A triangular wave in which the group vibrating field k is gradually increased and the frequency is gradually decreased. In this embodiment, when the difference between the feedback voltage and the reference voltage is very close to %, the first comparison voltage VH of the comparator 302 rises (to The maximum value. At this time, the adjustable triangular wave generator U 〇 can generate a triangular wave with a large amplitude and a lowest frequency. Referring next to FIG. 4A, an application adjustable according to a preferred embodiment of the present invention is illustrated. An electric diagram of a rising circuit of a triangular wave generator. In this embodiment, a negative (four) system 4G system, an electrical voltage reducing source, and includes a pulse width modulation control circuit 400, a switch 450 and a boost circuit 460. In the present embodiment, the boosting circuit 460 has an input terminal 462, an output port 464, and a controlled terminal 466. The wheel-in terminal 462 of the boosting circuit 46 is electrically coupled to the voltage source 'controlled terminal 466. And according to the cutting, the control of the off 450 selectively receives the operating voltage of the voltage source supply Next, the pulse width modulation control circuit 400 is electrically coupled to the output 464 of the rising C circuit 460, and the pulse width modulation control power, the 40 〇 includes the adjustable triangular wave generator 410, and the error signal generator. 420, the pulse wave signal generator 430 and the driving circuit 44. The switching switch 450 has a first end 452, the second end 454 disk third = 456, the first end 452 of the switching switch 45 is electrically coupled to The second end 454 of the drive circuit 440' is electrically coupled to the controlled end 466, and the third: "56 is electrically coupled to the ground, and the switch state makes the boost circuit 46 according to the drive signal of the drive circuit 440. Converting the voltage of the voltage source. μ In the present embodiment, the adjustable triangular wave generator 41 is connected: the output voltage of the output of the voltage circuit 460 is transmitted, and the reference voltage is pre-e The amplitude and frequency are adjusted with the feedback voltage for amplitude modulation and frequency transmission, and the amplitude and frequency are adjustable. The error signal generator 420 is operated according to the feedback electric dust* error to output an error signal. Then, the pulse wave 唬 yield 430 is electrically coupled to the adjustable triangular wave The generator: two 1; = number ^ generator 42 〇, receiving and comparing the error signal with the I-two-angular wave to output the pulse wave control signal. Finally, drive «I!; 40 430, Yuhu to output Drive k to switch 45. /1 In the present embodiment, the operation of load system 40 is such that when the switch is turned on, the voltage source is supplied to the booster circuit (10) to operate in the opposite direction. When the switch 450 is turned on. The voltage source stops supplying the operating voltage, the turbulent wave is produced, and the boring earth, the port boost circuit 460 is turned off, and the adjustable triangle ΐ ίί斋 410 is transmitted from the output 464 of the circuit 460. The mouth pressure is controlled by the reference voltage of the preset voltage. The difference between the reference voltage and the reference voltage exceeds the preset transient r; f, it can be determined that the ascending circuit 460 is in the initial state; the amplitude and the second triangular wave generator 410 are rotated to include the first The T-field and the younger one can adjust the triangular wave. When the difference between the voltage of 4 and the reference voltage is lower than the transient judgment power day, the booster circuit 460 operates in a transient state. The oscillating output of the 4 产生 γ γ γ 包括 包括 包括 包括 包括 包括 包括 包括 γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ γ When the feedback voltage is greater than or equal to the reference voltage (or the difference between the reference voltage and the reference voltage is lower than the steady state determination voltage), it can be determined that the voltage circuit 460 is in a stable state (or enters a stable state). The adjustable triangular wave generator 41 outputs an adjustable triangular wave including a third frequency. And, as described above, the output rate and amplitude of the adjustable triangular wave generator 410 can be adjusted according to the actual operation of the load circuit, and the electric current source 316 and the discharge current source 318 are not limited to the constant current source, and The initial state is the highest frequency, the minimum amplitude, the energy, the evil is the second highest frequency, and the second small amplitude 'the steady state is the lowest frequency and the second amplitude. Therefore, the first comparison voltage and the second comparison voltage, the electric current source, and the discharge current source can compare the voltage and the current according to a predetermined judgment condition to achieve an optimum amplitude, a frequency, and an angular wave. -- The mouth of the month followed by the McCaw 4th diagram, which shows a step-down circuit of a variable-triangular wave generator that is used in every application according to the present invention. The difference between the second well and the fourth is only to change the fourth circuit 460 to the buck circuit 470 and to electrically couple the switch to the voltage source and the buck circuit. Outside of 470, the mode of operation is similar to that of Figure 4. /, and then with reference to FIG. 4C, which shows a push-pull circuit of a more τ-modulated triangular wave generator according to the present invention. "There is no coupling: the difference between the four diagrams is that the push-pull circuit is in the sense of Ghost source, the push-pull circuit 4 72 is connected to the switch 17 I2979^74twf d 〇c/y: producing a raw induction current. In the pulse width modulation control: in the middle; The same as the present day and the 4th figure, which respectively show two blocks of the adjustable triangular wave generator according to the application: the block and the image application can be adjusted to change the third 4C in: electric =;: figure & The only difference is that the action ^ is l=c47 Figure 2 = is the full bridge circuit with 'and t' which differs from the 4th C only in that the bean action H-type circuit 472 is replaced with a half-bridge circuit 476, and its action mode is the same as that of Figure 4C. In the second example, after the various load circuits are activated, they can reach the ί ί 需 需 J needs too much f start state, transient state State enumeration,;=:;= The invention only limits the load circuit to the limit. In the present invention, the Weiwei Wire/Gentleman 12, 420 can be ^\/% The error signal generator is not limited to the invention in the present invention. 13〇, 430 may be in the case of a pulse signal generator, but not limited thereto. In the second (2), the 'transient judgment voltage can be negative. 2' is preset by 5 and § 10 people. The test voltage is produced. In the real f example, the reference voltage can be determined by the reference-angle generator. The value of the reference voltage can be set by the 18 I297974 twf.d〇c/y package 5 and 50 personnel according to actual needs. In a preferred embodiment of the invention, the load system 40 can be the front end of the application variable-triangular triangular wave generator. The circuit or the yba\k circuit is retracted, but not limited thereto. In summary, the load width modulation control circuit of the present invention has the following advantages: (1) The present invention The pulse width modulation control circuit uses its ίίΐ! f 'which can use the error integrator instead of the error amplifier; the device has a better and better anti-noise capability. Width modulation control circuit and adjustable variable triangle wave generator using the same, can effectively load the system Transient response. (The pulse width modulation control circuit of the present invention and the application of the time gate ί 统 可 can (4) the condition of the better transient response, the suspension, the stability of the load system in the steady state The self-it) pulse wave width modulation control circuit of the present invention and the application of the value thereof, the 糸, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The application of its system can reduce the response time of the load system to reach the steady state. The poor and good pulse width modulation control circuit and its application
Circuit，演稱IC)上。们知月且电路（Integrated 雖然本發明已以—較佳實施例 非用以限定本發明，任何熟習此技藝者，在不脫離^ 19 I29797^twf.d〇c,y 發明之精神和範圍内，當可作些許之更動與潤飾，因 - 此本發明之保護範圍當視後附之申請專利範圍所界 定者為準。 【圖式簡単說明】 第1圖是繪示依照本發明一較佳實施例的一種脈波寬 度調變控制電路的電路方塊圖。 第2A圖是繪示依照本發明一較佳實施例的一種可調 • 變三角波產生器輸出之分段的可調變三角波示意圖。 第2B圖是繪示依照本發明一較佳實施例的一種可調 變三角波產生器輸出之連續的可調變三角波示意圖。 第3圖是繪示依照本發明一較佳實施例的一種可調變 三角波產生器之電路圖。 第4A圖是繪示依照本發明一較佳實施例的一種應用 可調變三角波產生器之升壓電路之電路方塊圖。 第4B圖是繪示依照本發明一較佳實施例的一種應用 可調變三角波產生器之降壓電路之電路方塊圖。 • 第4C圖是繪示依照本發明一較佳實施例的一種應用 可調變三角波產生器之推挽式電路之電路方塊圖。 第4D圖是繪示依照本發明一較佳實施例的一種應用 可調變三角波產生器之全橋電路之電路方塊圖。 第4E圖是繪示依照本發明一較佳實施例的一種應用 可調變三角波產生器之半橋電路之電路方塊圖。 第5圖係習知一種負載系統之脈波寬度調變控制電 路的電路方塊圖。 20 I2979744twf.d〇c,y • 第6圖係習知一種三角波產生器輸出之三角波、誤 - 差信號與脈波控制信號之示意圖。 【主要元件符號說明】 40，50 :負載系統 100，400 :脈波寬度調變控制電路 110，410 :可調變三角波產生器 120，420 :誤差信號產生器 φ 130，430 :脈波信號產生器 140，440，540 :驅動電路 202，204，206，208，210 :可調變三角波 302 :第一比較器 304 :第二比較器 306，308 ··反閘 310 ··第三比較器 312，314 :開關 316 :充電電流源 318 :放電電流源 320 :電容 450，550 :切換開關 452 ··第一端 454 :第二端 4 5 6 ··第三端 460 :升壓電路 462，562 :輸入端 21 1297997和 f.doc/yCircuit, called IC). </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The scope of protection of the present invention is defined by the scope of the appended claims. [FIG. 1] FIG. 1 is a preferred embodiment of the present invention. A circuit block diagram of a pulse width modulation control circuit of an embodiment. Fig. 2A is a schematic diagram of a variable-change triangular wave of a segment of an output of an adjustable-triangular wave generator according to a preferred embodiment of the present invention. FIG. 2B is a schematic diagram showing a continuous adjustable triangular wave of the output of the adjustable triangular wave generator according to a preferred embodiment of the present invention. FIG. 3 is a view showing an adjustable according to a preferred embodiment of the present invention. 4A is a circuit block diagram of a booster circuit using a variable-triangular triangular wave generator according to a preferred embodiment of the present invention. FIG. 4B is a block diagram showing a booster circuit using an adjustable triangular wave generator. A circuit block diagram of a step-down circuit using an adjustable triangular wave generator of an embodiment. FIG. 4C is a diagram showing a push-pull circuit using an adjustable triangular wave generator according to a preferred embodiment of the present invention. 4D is a block diagram of a full bridge circuit using an adjustable triangular wave generator in accordance with a preferred embodiment of the present invention. FIG. 4E is a block diagram showing a preferred embodiment of the present invention. A circuit block diagram of a half bridge circuit using an adjustable triangular wave generator. Fig. 5 is a circuit block diagram of a pulse width modulation control circuit of a load system. 20 I2979744twf.d〇c,y • 6 is a schematic diagram of a triangular wave, error-difference signal and pulse wave control signal outputted by a triangular wave generator. [Main component symbol description] 40, 50: load system 100, 400: pulse width modulation control circuit 110, 410: Adjustable triangular wave generator 120, 420: error signal generator φ 130, 430: pulse signal generator 140, 440, 540: drive circuit 202, 204, 206, 208, 210: adjustable triangular wave 3 02: first comparator 304: second comparator 306, 308 · reverse gate 310 · third comparator 312, 314: switch 316: charging current source 318: discharge current source 320: capacitor 450, 550: switch 452 ··first end 454: second end 4 5 6 ··third end 460: boost circuit 462, 562: input 21 1297997 and f.doc/y
464， > 564 :輸出端 466 受控端 470 降壓電路 472 推挽式電路 474 全橋電路 476 半橋電路 500 脈波產生電路 510 三角波產生器 520 誤差放大器 530 比較器 560 負載電路 602 三角波 604 誤差信號 606 脈波控制信號464, > 564: output 466 controlled terminal 470 buck circuit 472 push-pull circuit 474 full bridge circuit 476 half bridge circuit 500 pulse wave generating circuit 510 triangular wave generator 520 error amplifier 530 comparator 560 load circuit 602 triangular wave 604 Error signal 606 pulse wave control signal
22twenty two