TWM277178U

TWM277178U - Switching controller having output power limitation and brownout protection

Info

Publication number: TWM277178U
Application number: TW94202757U
Authority: TW
Inventors: Ta-Yung Yang; Chien-Yuan Lin; Wei-Hsuan Huang
Original assignee: System General Corp
Priority date: 2005-02-21
Filing date: 2005-02-21
Publication date: 2005-10-01

Description

M277178 九、新型說明：【新型所屬之技術領域】一種具有輸出辨_與低龍保護之切換式控繼置，尤指—種可限制功率輪出與低輸人獅雜保護之切換式控制裝置。【先前技術】在電源供應器中，酬切換技術係為—習知的技術，其係可以用來控制與敎調整輸㈣率。各種倾雜如過龍與觀龍護仙建在電源供應益中，用來保賴電賴應器朗邊魏，以避免造成永久性的傷害。電源供《之輸$神_的雜通f侧_賴短路倾。° 參考第-圖，係為習知的電祕應器電路轉圖。其中切換式控制器仏由功率限制比較器53、缝器56及驅動訊號產生單元54組成，係作為電源供應器5驅動訊號之來源，例如酬控制麵電路_，該_控制積體電路聰在商㈣顧上已經敍地仙錢賴應器的場合。錢源供應器5巾’輸人鶴VlN會透過—啟動電阻^開鱗—維持電容 Cst進行充電，等到維持電容CsT上之電壓Va到達—啟動電壓時，切換式控^ 器Ui開始動作，用來驅動整個電源供應器5。電源供應H 5 »後’切換式控缸作所需要之供應電壓知，係由變壓器1的辅助繞組Να透過-整流g Da對維持電容C4電所提供。此時，-檢知電阻RS Φ聯連接於辨關Q1 ’係檢猶過辨關Q1之變壓器1-次織流Ip ’作為決定賴供應器5的最大輪出辨。實現的方法是將檢知修紅的輕（即-錢制峨&)傳_辨_比較器53 M277178 的負端。假使電流感測訊號M277178 IX. Description of the new type: [Technical field to which the new type belongs] A switchable control relay with output discrimination and low dragon protection, especially a switchable control device that can limit power wheel output and low-lose hybrid protection . [Previous technology] In the power supply, the pay switching technology is a conventional technology, which can be used to control and adjust the input rate. Various miscellaneous items like dragons and dragons guarding the immortal are built in the power supply benefits to protect the electric responder Langbianwei to avoid permanent damage. The power supply is provided by "The Lost $ 神 _ 的杂通 f 侧 _Lai short circuit. ° Refer to Figure-for the conventional circuit diagram of the electric reactor. Among them, the switching controller 仏 is composed of a power-limiting comparator 53, a sewing device 56, and a driving signal generating unit 54 as a source of the driving signal of the power supply 5, such as a control circuit circuit, which controls the integrated circuit. Shang Gu had already described the occasion where the Qian Qian relied on the device. The money source supplier's input crane VlN will be charged through—starting resistor ^ open scale—maintenance capacitor Cst. When the voltage Va on the sustaining capacitor CsT reaches—starting voltage, the switching controller Ui starts to operate. To drive the entire power supply 5. The power supply H 5 »is known as the supply voltage required for the switching control cylinder operation, which is provided by the auxiliary winding Nα of the transformer 1 through the rectification g Da to the maintenance capacitor C4. At this time, the -detection resistor RS Φ is connected to the discrimination gate Q1 ', which is a transformer 1-pass weaving current Ip' which determines that the transformer Q1 is passed as the maximum rotation discrimination of the supplier 5. The method to achieve this is to pass the negative end of the comparator 53 M277178 _ discriminator_ comparator _ discriminator_amp. If the current sensing signal

Vcs大於妓之最大功率限制準位的電壓雜，該驅動喊產生單元54將週期性並且也將限制電源供應器5的最大輸出功率。量ε為：If the voltage Vcs is greater than the maximum power limit level of the prostitute, the drive shout generating unit 54 will periodically and also limit the maximum output power of the power supply 5. The quantity ε is:

Vm，例如IV 地停用驅動訊號VPWM的輸出，儲存於變壓器t電感上的能 1 s = ~xLxl =ΡχΤ • •·*_··####_參參鲁♦鲁鲁鲁參· .....(1) 最大輸出功率ρ可以表示如下：Vm, for example, the output of the drive signal VPWM is disabled at IV ground, and the energy stored in the inductor t of the transformer is 1 s = ~ xLxl = ΡχΤ • • ** ·· #### _ 参参鲁 ♦ 鲁鲁鲁参 ·. .... (1) The maximum output power ρ can be expressed as follows:

I V丨 Ν +I V 丨 Ν +

Ip =-ΧΙΟΝIp = -ΧΙΟΝ

Lp »»····_ •鲁》 ΡLp »» ··· _ • Lu》 Ρ

Lp 2xT x|p2 = W^..............Lp 2xT x | p2 = W ^ ..............

2xLpxT ⑵ ⑶ 其中Ip與Lp分別地表示為變壓器Ti的—次側電流與—摘電感值；^ 係為功率開關㈣通時，驅動訊號Vpm_通時間；τ係為功率開關③之切換週期。由方程式⑶可以發現，輸出功率ρ將隨著輸入電壓I的改變而產生變化。當考慮到安規(safety)時，電源供應器的輸入電源電壓細系由驗到264Vac。在較高的輸入電源電壓(264Vac)時的輸出功率限制通常高於在較低的輸人《電壓⑽趾)時·制，而高健之間錄有數倍的差異。雖然透過電源供應器的回授控制迴路可自動地調整導通時間仏，而使得輸出功率保_定值。也就是說，#電流_職Ves高於最大功率限制準位 V«時，例如VC (IP xRs - 1V)，此時最大導通時間-將受到限制，並達成限制該電源供應器之一次側電流。 6 M277178 再者，最大輸出神也受_動纖產生單元54 _觀遲時間td 所影響。 - 配合第―® ’請參考第二圖’係為傳輸造成高據輸入電源 . 下之輸出功雜鮮位差異示賴。《供應n 5在m定的最大功率限制準位訂，於高壓輸入電源工作時會產生斜率較陡的電流感測訊號^與持續導通時間^較短的鶴職w。再者，於低壓輸人騎二作時會產鲁生斜率較緩的電流感測訊號、與持續導通時間u較長的驅動訊射咖。貫際上’當電流感測訊號Vcs高於最大功率限制準位^的瞬間（$ IV) ’該驅動訊號產生單元54 _動訊號VpM會經過一段傳輸延遲時間知 '後才會截止。在該傳輸延遲時間td之内，功率開關Q!會持續導通，並且繼，續傳遞功率。因此，實際的驅動訊號v刚的導通時間^係等於祕。也就 •是說’當輸入電源電壓較高時，功率開關實際的導通時間隨之增加，因而實際的功率限制準位VM，HV較高，進而導致電源供應器5輸出功率增鲁加甚夕而特別„兒明的是’無論是在較南與較低之輸入電源電壓下，於相同的電源供應器中，其傳輸延遲時間td的大小是相同的。2xLpxT ⑵ ⑶ where Ip and Lp are respectively the secondary current and the inductance of the transformer Ti; ^ is the drive signal Vpm_on time when the power switch is on; τ is the switching period of the power switch ③. It can be found from equation (3) that the output power ρ will change with the change of the input voltage I. When safety is taken into consideration, the input power supply voltage of the power supply is tested to 264Vac. The output power limit at higher input power supply voltage (264Vac) is usually higher than that at lower input voltage “toe”, and there are several times the difference between high-power recording. Although the feedback control loop of the power supply can automatically adjust the on time 仏, so that the output power can be maintained at a fixed value. In other words, when #Current_job Ves is higher than the maximum power limit level V «, such as VC (IP xRs-1V), the maximum on-time will be limited and the primary current of the power supply will be limited. . 6 M277178 Furthermore, the maximum output power is also affected by the _moving fiber generation unit 54 _ observation delay time td. -Coordination with the "-" "Please refer to the second picture" is caused by high power input power for transmission. The difference in output power and noise is shown below. "Supply the maximum power limit of n 5 at m level. When the high-voltage input power supply is working, it will generate a current sensing signal with a steep slope ^ and a continuous on-time ^ shorter crane duty w. In addition, the low-voltage input rider will produce a current sensing signal with a slow slope and a driving signal with a long continuous conduction time u. Generally, the moment when the current sensing signal Vcs is higher than the maximum power limit level ($ IV), the driving signal generating unit 54 _ the motion signal VpM will be cut off after a transmission delay time is known. Within this transmission delay time td, the power switch Q! Will be continuously turned on and continue to deliver power. Therefore, the actual on-time of the driving signal v is equal to the secret time. That is to say, 'When the input power supply voltage is high, the actual on-time of the power switch increases, so the actual power limit level VM, HV is higher, which in turn leads to an increase in the output power of the power supply 5. What is particularly clear is that the transmission delay time td is the same in the same power supply at both the south and lower input power voltages.

當輸入電源電壓較低時，功率開關Q1實際的導通時間“也會隨之增加，實際的功率限制準位VMLV會比輸入電源電壓較高時之功率限制準位U 低。因而導致電源供應器5在很大範圍的輸入電壓下，會產生數倍差異之輸出功率。而實際的輸出功率p如下所示： p 一 V IN X (t〇N -f to)2 2^L^t ·· 1 ♦爆·•裊蟲 M277178 比較上述說明之式子⑶與⑷，由於ic内部的傳輪延遲時間七將會使激磁電流瞻㈣地/咖，，蝴_物會有較大的裤限制準位。軸該傳輪輯_ td很短，通f介於I到細μ 的範圍’續高的的操作頻率下，該傳輸延遲_ td所造成的鱗更形加劇。所以輸入電源賴Vw應適當地麵，使得該輸入電源電㈣坏會影響最大輸出功率。曰【新型内容】When the input power voltage is low, the actual on-time of the power switch Q1 will also increase. The actual power limit level VMLV will be lower than the power limit level U when the input power voltage is high. This results in a power supply. 5 Under a wide range of input voltages, there will be several times the difference in output power. The actual output power p is as follows: p -V IN X (t〇N -f to) 2 2 ^ L ^ t ·· 1 ♦ ·· • 袅虫 M277178 Comparing the above-mentioned formulas ⑶ and ⑷, due to the internal delay time of the wheel 7 in the IC will make the exciting current look at the ground / coffee, and the butterfly will have a larger pants limit. The transmission series _ td is very short, and the frequency f is in the range of I to μ. 'Continuously higher operating frequency, the scale caused by the transmission delay _ td is more intensified. Therefore, the input power depends on Vw. Appropriate ground, so that the input power supply failure will affect the maximum output power. [New content]

有鐘於此，本創作具有輸出功率限制與低電塵保護之切換式控制裝置’其主要目的在於當電源供應器之輸人電源電壓變動時，係、可以動態的進订輸出辨之關。再者，若是輸人電源龍過低下，财停止電源供應器之輸出，如此係可達成低輸入電源電壓之保護。 ”本創作使用-磁滞比較電路透過輸入電阻接收等比例之輪入電源電壓，磁滯比較電路㈣低之輸人電源龍與爾臨界賴範進行比較運算，用以輸出-低電壓磁滯訊號，低電壓磁滞訊號控制驅動訊號產生單 Χ/ίτ止驅動訊狀輪丨，作為電驗應器輸人電源籠職之保護。同時’本創作使用-箝制電壓產生單元透過輸入電阻接收等比例之輸入电源電壓’用以輸出—最大功率限制電壓…功率限制比較器接收該最大功率限制電壓與-電流感測訊號，並進行錄運算，心輸出一功率限制δίΐ號’作為電源供應器輸出之功率限制。再者，本創作使用-連接於該功率限制比較器與功率開關之驅動訊號產生單元輪㈣功率限制訊號，係可輪出驅動訊號到功率_。藉此， 8 M277178 當輸入電闕壓變_，該最大神關電齡隨之改變，進而促使該驅動訊號產生單元調整驅動訊號之工作週期，以限制電源供應器之一次側電流，並且達到輸出功率之限制。 • 在輸人電源電壓過低的狀況下，遲滯比較電路會將過低的輪入電源電壓與磁滯臨界電壓範圍值進行比較運算，即產生低電壓遲滞訊號，用以控制驅動减產生單元彳，止轉喊細，作為低輸人獅電壓保護。 _ A 了使貴審查委員能更進一步瞭解本創作特徵及技術内容，請參閱以下有關本創作之詳細說明與附圖，然而所附圖式僅提供參考與說明用，並非用來對本創作加以限制。【實施方式】 : 請參考第三圖，係為糊作雛實施狀魏轉圖，本創作使用於 • 電源供應1^ 6巾，係跟隨—輸人《電壓vIN的變化，進而控制一功率開關α之切換動作，包括有··磁滞比較電路60、箝制電壓產生單元幻、功 •率_比#以63及驅動職產生單元64。獅比Μ路6G透過輸入電阻 &與尺2之分壓以取得等比例的輸人電源電壓&，並將該等比例的輸入電源電塵^與-磁滯臨界賴範圍值（電壓下限臨界值&〜電壓上限臨界值 Vh)進行比較運算。同時，#等比例的輸入電源龍v取低於電壓下限臨界值VL日守，磁滞比較電路60輸出一低準位的低電壓磁滞訊號仍，並在高於電虹限臨界值VH時輸出高準位的低電壓磁滯訊號Ds，以形成訊號磁 π見象上述況明中，该磁滞臨界電壓範圍值係為相對於輸入電源電麼 90Vac的-電壓上限臨界值Vh到相對於輸入電源電麼聊此之一電覆下限 9 M277178 臨界值Vl。復參考第三圖，該箝制電壓 rm心 |生早7062由—加法器620連接—限制電 &源vRm組成，係透過輸入带 I R2取得自輸入電源電壓分壓後、補仏黾壓V〇FFSET ’該補償雷懕v .u ^ 甩i Voffset與该限制電壓源V透過 620進行加法運算後，俜輪 “ r、、i 輪出一取大功率限制電壓V·。由於輸入電源電塗VIN為-變動值，如在高輸入電源電壓職c至低輸入電源電壓驗之間之變化。所以最大轉_健ν·也為可_值。透過該箝制電壓 =單元62的糖_能，在高輸人《籠下和制最大功率限制電壓Vlmt，hv，在低輸入電源電壓下可以得到最大功率限制電壓ν’，其中Vlmt，lv係大於VLMT，HV的電壓準位。該功率限制比較器63連接於該箝制電壓產生單元62，健收變動的該取大功雜制電壓vLMT，並將變動的該最大功雜制電壓Vlmt與一電流感測訊號vcs進行比較運算，用以輸出一變動的功率限制訊號v〇c。復參考第三圖，驅動訊號產生單元64連接於該磁滯比較電路6〇、該功率限制比較器63、該功率開關Q及該電源供應器之回授端，係接收該低電壓磁滯訊號DS與該功率限制訊號Voc，以輸出一驅動訊號該功率開關Q〗。其中驅動訊號產生單元64包括有：一 PWM比較器642、一邏輯電路644、一正反器646及一振盪器648。該PWM比較器642連接到該功率限制比較器63與該電源供應器之回授端，用以接收一電壓回授訊號VFB與該電流感測訊號Vcs，同時比較運算該電壓回授訊號VFB與該電流感測訊號Vcs，用以輸出一調變輸出訊號 M277178 VP0。該調變輸出訊號VP0傳送到連接於功率限制比較器63輪出端之邏輯電路644，該邏輯電路644取得該功率限制訊號v〇c與該調變輪出訊號，並執行及閘(AND)之邏輯運算，以輸出一重置訊號Vrst。该正反益646連接於該磁滯比較電路6〇、該邏輯電路644、該振盪器 648及該功率開關Q，係接收該低電壓磁滞訊號DS、該^置訊號v防τ及一振盡訊號CLK，用以輸出該驅動訊號％·到該功率開關^。。上述說日种，該正反器646 ^D型正反器，其―重置離)連接到該邏輯電路644之輸出端肋接收該重置訊號％，其一時脈端(ck)連接到該振盪器648用以接收該紐訊號咖，其一輸入端(d)連接到磁滞比較電路60的輸出端用以接收該低電壓磁滞訊號ds，其一輸出端⑼連接到該功率開關Q〗之控制端用以輸出該驅動訊號v_。 X X盈« CLK &制D型正反||於輸人端⑼取得該低電壓磁滞訊號 DS、,’並呈現於該輸出端(Q)，同時，該邏輯電路_輸出之重置訊號、器之邏輯運算係可由SR型正反器或傳:到該D型正反器之重置端⑻，可於過功率發生時調整該D型正反器輪出端(Q)之驅動訊號VPWM。該D型正反 JK型正反器替代執行。、取大功率限制籠Vlmt之變動係會影響功率限制比較器纪輪出 =率限制峨v〇c ’細、_輸644、邮⑽脚整驅動訊㈣购軸椒_。財爾麟細 &制正反以46輸出或不輸出驅動訊號配口第二圖，請參考細騎林創作傳輸延遲時間造成高低壓輸入 M277178 電源下之輸出功率限制準位差異示意圖。箝制電壓產生單元以在高輸入電源電壓與低_«壓獨產綠大辨關 I分顺V_v 與VLMT，LV，而檢知電阻Rs取得的電流感_虎vcs則分別為Vcshv與 ^，LV其中電流感測訊號Vcs hv、％會分別透過功率限制比較器63與取大力率限制電壓Vlmthv、Vlmt，lv進行比較運算，而得到導通時間分別為 nn4ue_虎VpwMHv、VpwM，。於上述說明中，若是同時考慮切換式控制器中各元件所產生的延遲，高輸入電源電壓與低輸入電源電壓實際導通時間分別為wtAW+td。由上述可知，透過該箝制電壓產生單元62的電壓箝制功能，讓電源供應^在高魔或低壓輸入電源下動態的改變最大功率限制電壓VLMT，作為電源供應器6輸出功率之補償，其實際的最大功率限制 V贿係為相同，亚可以得到穩定且相同的輸出功率P。士復配合第三圖，請參考第五圖，係為本創作磁滞比較電路波形示意圖。 f 2軌到t3時’輸入電源電料N小於健上限臨界值VH，此時，輸入屯源電壓VIN即透過該磁滞比較電路6〇開始進行磁滞比較運算。於時間^ 時，輸入電源電壓VIN低於爾下限臨界值VL，此時該磁滞比較電路60 /輸出低準位之该低電壓磁滯訊號Ds，用以控制該正反器_停止驅動訊旎VPWM之輸出；另外於時間時，輸入電源龍^高於該電壓上限臨界值vH，此時該磁滯比較電路60即輸出高準位之該低輕磁滞訊細，用以控制該正反器646恢復驅動訊號VP麵之輸出。本創作具刪功率限制與讎保護之切換式控制裝置，在電源供 12 M277178 應器之輸人電源電壓變動時，動態的進行輸出轉之關，若是輸入電源電壓過低下，财停止細趙歎輸出，如祕可達舰輸人電源電壓之保護。惟，以上所述，僅為本創作最佳之—的具體實施例之詳細說明盘圖式，惟本創作讀舰獨限減，麟__摘作，摘狀所有範圍應以下述之帽專利翻為準，凡合於本創作之精似變化之實劇，皆應包含於本_之鱗巾，任何熟辆項技藝者在本創作之領域内，可輕易思及之變化或修飾皆可涵蓋在以下本案之專利範圍。With this in mind, the main purpose of this creation is to switch the control device with output power limitation and low dust protection. Its main purpose is to dynamically and dynamically identify the output when the input voltage of the power supply changes. Furthermore, if the input power is too low, the output of the power supply will be stopped, so that the protection of low input power voltage can be achieved. "This creation uses a -hysteresis comparison circuit to receive an equal proportion of the round-in power supply voltage through the input resistance. The low-voltage hysteresis signal controls the drive signal to generate a single X / ίτ stop drive signal wheel 丨 as a protection for the input of the power supply of the electroscope. At the same time, 'this creative use-clamp the voltage generation unit to receive an equal proportion through the input resistance The input power supply voltage is used to output the maximum power limit voltage ... The power limit comparator receives the maximum power limit voltage and the current sensing signal, and performs a record operation. The power output is a power limit δ ΐ number as the output of the power supply. Power limitation. Furthermore, this creation uses the drive signal generating unit connected to the power limit comparator and the power switch to turn the power limit signal, which can turn the drive signal to power. By this, 8 M277178 is used as the input voltage. Pressure change _, the maximum age of the electric power of the gate changes accordingly, thereby prompting the driving signal generating unit to adjust the duty cycle of the driving signal, Limit the primary current of the power supply and reach the output power limit. • When the input power voltage is too low, the hysteresis comparison circuit will compare the too low wheel-in power supply voltage with the hysteresis threshold voltage range value. That is, a low-voltage hysteresis signal is generated, which is used to control the drive-reduction generating unit 彳, stop turning shouting, as a low-loss lion voltage protection. _ A To enable your review committee to further understand the creative characteristics and technical content, please Please refer to the following detailed description and drawings about this creation, but the drawings are provided for reference and explanation only, and are not intended to limit this creation. [Embodiment]: Please refer to the third figure, which is a preliminary implementation. Wei Zhuantu, this creation is used for • Power supply 1 ^ 6 towels, follow-input “change in voltage vIN, and then control the switching action of a power switch α, including the hysteresis comparison circuit 60, clamping voltage generation Unit magic, power • rate_ ratio # 63 and driver generation unit 64. Lion 6M Road 6G through the input resistance & and the divider 2 to obtain an equal proportion of the input power voltage & a mp ;, and compare the ratio of the input power supply dust ^ and-the hysteresis critical range value (lower voltage threshold critical value & ~ upper voltage threshold critical value Vh). At the same time, # equal proportion of the input power source v When the voltage is lower than the lower limit of the voltage VL, the hysteresis comparison circuit 60 outputs a low-level low-voltage hysteresis signal and outputs a high-level low-voltage hysteresis signal when it is higher than the threshold value VH. Ds, to form a signal magnetic π See the above description, the hysteresis threshold voltage range value is 90Vac relative to the input power supply-the upper voltage threshold Vh to the input power supply. M277178 critical value Vl. Referring again to the third figure, the clamping voltage rm core | born early 7062 is composed of-adder 620 connected-limited power & source vRm, obtained through the input band I R2 divided by the input power voltage, Compensating voltage V〇FFSET 'The compensation thunder v.u ^ Shaft i Voffset and the limiting voltage source V are added through 620, and then the wheels "r,, i will output a high-power limiting voltage V ·. Since the input power supply voltage VIN is a -variable value, such as the change between the high input power supply voltage C and the low input power supply voltage. Therefore, the maximum turn _ Jian ν is also a possible value. Through this clamping voltage = sugar_energy of unit 62, the maximum power limit voltage Vlmt, hv can be obtained under low input power supply voltage at high input voltages, where Vlmt, lv is greater than VLMT, HV voltage level. The power limit comparator 63 is connected to the clamping voltage generating unit 62, and receives the changed large power miscellaneous voltage vLMT, and compares the changed maximum power mixed voltage Vlmt with a current sensing signal vcs. To output a varying power limit signal voc. Referring again to the third figure, the driving signal generating unit 64 is connected to the hysteresis comparison circuit 60, the power limit comparator 63, the power switch Q, and the feedback terminal of the power supply to receive the low voltage hysteresis signal. DS and the power limit signal Voc to output a drive signal to the power switch Q. The driving signal generating unit 64 includes a PWM comparator 642, a logic circuit 644, a flip-flop 646, and an oscillator 648. The PWM comparator 642 is connected to the feedback terminal of the power limit comparator 63 and the power supply, and is used to receive a voltage feedback signal VFB and the current sensing signal Vcs, and compare and calculate the voltage feedback signal VFB and The current sensing signal Vcs is used to output a modulation output signal M277178 VP0. The modulation output signal VP0 is transmitted to a logic circuit 644 connected to the output end of the power limit comparator 63. The logic circuit 644 obtains the power limit signal voc and the output signal of the modulation wheel, and performs an AND operation. Logic operation to output a reset signal Vrst. The positive and negative benefits 646 are connected to the hysteresis comparison circuit 60, the logic circuit 644, the oscillator 648, and the power switch Q, and receive the low-voltage hysteresis signal DS, the anti-set signal v anti-τ and a vibration. The full signal CLK is used to output the driving signal% · to the power switch ^. . As mentioned above, the flip-flop 646 ^ D flip-flop is connected to the output terminal rib of the logic circuit 644 to receive the reset signal%, and a clock terminal (ck) is connected to the The oscillator 648 is used to receive the New Signal signal, and an input terminal (d) thereof is connected to the output terminal of the hysteresis comparison circuit 60 to receive the low voltage hysteresis signal ds, and an output terminal thereof is connected to the power switch Q The control terminal is used to output the driving signal v_. XX surplus «CLK & D type positive and negative || Obtain the low voltage hysteresis signal DS ,, 'at the input terminal and present it at the output terminal (Q). At the same time, the logic circuit_output reset signal The logic operation of the device can be passed from the SR type flip-flop or to the reset terminal of the D-type flip-flop, which can adjust the driving signal of the D-type flip-flop output (Q) when overpower occurs. VPWM. The D-type forward and reverse JK type inverter is implemented instead. 2. The change in the high-power limit cage Vlmt will affect the power limit comparator. The rate limit is equal to the rate limit E VO C ′ fine, _ lose 644, and the entire drive news. Caierlin fine & positive and negative with 46 output or no output drive signal. The second picture of the port, please refer to the schematic diagram of the difference in the output power limit level of the high and low voltage input caused by the transmission delay time of Cichilin. The voltage generating unit is clamped in order to divide the high-input power voltage and low _ «to produce the unique green big discriminator I points V_v and VLMT, LV, and the current sense obtained by detecting the resistance Rs _ tiger vcs are Vcshv and ^, LV, respectively Among them, the current sensing signals Vcs hv and% will be compared with the power limit comparators Vlmthv, Vlmt, lv through the power limit comparator 63, and the on-times will be nn4ue_Tiger VpwMHv, VpwM, respectively. In the above description, if the delays caused by the components in the switching controller are considered at the same time, the actual on-times of the high input power voltage and the low input power voltage are wtAW + td, respectively. From the above, it can be known that the voltage clamping function of the clamping voltage generating unit 62 allows the power supply to dynamically change the maximum power limit voltage VLMT under high magic or low voltage input power as a compensation for the output power of the power supply 6. The maximum power limit V is the same, and Ya can get stable and the same output power P. Shifu cooperated with the third picture, please refer to the fifth picture, which is the waveform diagram of the hysteresis comparison circuit for this creation. From f2 to t3, the input power source N is smaller than the upper limit threshold VH. At this time, the input source voltage VIN starts to perform the hysteresis comparison operation through the hysteresis comparison circuit 60. At time ^, the input power voltage VIN is lower than the lower threshold VL. At this time, the hysteresis comparison circuit 60 / outputs the low-voltage hysteresis signal Ds at a low level to control the flip-flop_stop drive signal PWMVPWM output; In addition, at time, the input power source is higher than the voltage upper threshold vH. At this time, the hysteresis comparison circuit 60 outputs the high-level low-light hysteresis signal to control the positive The inverter 646 restores the output of the driving signal VP plane. This creation has a switching control device that removes the power limit and protection. When the power supply voltage of the 12 M277178 reactor is changed, the output is dynamically turned off. If the input power voltage is too low, it will stop. The output can be protected by the power supply voltage of the ship. However, the above description is only a detailed description of the specific embodiment of the best-discussed disk drawing. However, the reading of this creation is limited only. Lin__ Excerpt, all the excerpts should be covered by the following cap patents. The actual changes that are in line with this creation should be included in the scale of this book. Any familiar artist can easily think about the changes or modifications in the field of this creation. Covered in the patent scope of this case below.

13 M277178 【圖式簡單說明】第一圖為習知的電源供應器電路示意圖；第二圖為傳輸延遲時間造成高低壓輸入電源示意圖；之輪出功率限制準位差異第二圖為本創作較佳實施例之電路示意圖；源下之輸出功率限制準 54驅動訊號產生單元 60磁滞比較電路 63功率限制比較器 644邏輯電路 Cst維持電容乃變壓器 VLMT最大功率限制電壓 Vp〇調變輸出訊號 VpwM驅動訊號第四圖為本創作傳輸延遲時間造成高低壓輸入電位差異示意圖；及第五圖為本創作磁滯比較電路波形示意圖。【主要元件符號說明】 5電源供應器 56振盪器 62箝制電壓產生單元 64驅動訊號產生單元 646正反器 Q切換式控制器 Qi功率開關 V〇ffset補償電壓 Voc功率限制訊號 Vcs電流感測訊號 CLK振盈訊號 53功率限制比較器 6電源供應器 620加法器 642PWM比較器 648振1器 Rst啟動電阻 Da整流器 Vr限制電壓源 Vrst重置訊號 DS低電壓磁滯訊號 1413 M277178 [Schematic explanation] The first picture is a schematic diagram of a conventional power supply circuit; the second picture is a schematic diagram of the high and low voltage input power caused by the transmission delay time; Schematic circuit diagram of the preferred embodiment; output power limit under source 54 driving signal generation unit 60 hysteresis comparison circuit 63 power limit comparator 644 logic circuit Cst maintaining capacitor is the transformer VLMT maximum power limit voltage Vp0 modulate output signal VpwM drive The fourth figure of the signal is the schematic diagram of the difference in input potential caused by the transmission delay time of the creative; and the fifth figure is the waveform of the hysteresis comparison circuit of the creative. [Description of symbols of main components] 5 power supply 56 oscillator 62 clamping voltage generating unit 64 driving signal generating unit 646 flip-flop Q switching controller Qi power switch V 0ffset compensation voltage Voc power limit signal Vcs current sensing signal CLK Zhenying signal 53 power limit comparator 6 power supply 620 adder 642 PWM comparator 648 oscillator 1 Rst start resistor Da rectifier Vr limit voltage source Vrst reset signal DS low voltage hysteresis signal 14

Claims

M277178 十、申請專利範圍： L -種具有輸出功率限制與低電壓保護之切換式控姆置，㈣於一電源供應器中，係賴-輪人電源電壓的變化，進而控制與調整—功率開關之一驅動訊號，包括有·· 一磁滞比較電路，係接收等比例之該輪人電源電壓與-磁滯臨界電雜圍值，經比較運算後，係輸出一低«磁滞訊號； -箝制籠產生單元，係使用一限制電壓源與該變化的輸入電源電壓進行運异’用以輸出一最大功率限制電麗；一功率限概較H，連接⑽箝制龍產生單元與該電源供應器之 -感測端，係接收該最大功率限制電顯一電流感測訊號，並將該最大功率限制電壓與該電流感測訊號進行比較運算，用以輸出一功率限制訊號；及M277178 10. Scope of patent application: L-a switching control device with output power limitation and low voltage protection, which is integrated in a power supply, which depends on the change of the power supply voltage of the driver, and then controls and adjusts the power switch. One of the driving signals includes a hysteresis comparison circuit, which receives an equal proportion of the power supply voltage of the person and the critical hysteresis value of the hysteresis. After a comparison operation, a low «hysteresis signal is output;- The clamping cage generating unit uses a limited voltage source and the changed input power voltage to perform a different operation to output a maximum power limiting power. A power limit is approximately H, which connects the clamping dragon generating unit and the power supply. The -sensing terminal receives the current sensing signal of the maximum power limit electric display, and compares the maximum power limit voltage with the current sensing signal to output a power limit signal; and

一驅動訊财生單元，連接_解限概較器、麵滯比較電路、該電源供應器之一回授端、該電源供應器之該感測端及該功率開關，係接收該辨_職、該鱗壓娜棘、—電壓_域及該電流感測訊號，用以輸出該驅動訊號到該功率開關。如申請翻_第i撕狀具有細辨_與低健保護之切換式控制裝置，射糊冑組㈣—卿伽晴壓源所組成°亥加法益將變動的該輸入電源電壓與該限制電麼源進行加法運算後’係輸出該最大功率限制電壓。 3.如申請專概Μ丨賴述之具錢㈣報顯低龍倾之切換式 15 M277178 控制裝置，其中該驅動訊號產生單元係包括有： - p侧比較器，連接到該電源供應器之該回授端與該感测端，係接收該電壓回授訊號與該電流感測訊號，根據比較運算該電壓回授訊號與該電流感測訊號，用以輸出—調變輸出訊號；邏輯電路，連接於該功率限制比較器與該pwM比較器，係接收該功率限制訊號與該調變輸出訊號用以輸出一重置訊號；及正反為’其-輸入端連接於該磁滯比較電路、一重置端連接於該邏輯電路、-時脈端連接於_振盤器及—輸出端連接於該功率開關，係接收該低龍爾1«、嶋峨域，㈣咖動訊號到該功率開關。 4. 如申請專利範圍第3項所述之具有輸出功率限制與低電壓保護之切換式控繼置，其中該正反器可選自於D型正反器、SR型正反器或jk型正反器之群組組合之一。 5. —種具有輸出功率限制之切換式控制裝置，使用於一電源供應器中，係跟隨-輸入電源電壓的變化，進而控制與調整一功率開關之—驅動包括有： -柑制電壓產生單元，係伽—_電壓源與該變壓進行運算，用以輸出-最大功率限制籠； $原電功率限制比較器，連接於該箝細產生單元與該電源供應器之 :測端，係接崎大辨嶋顯—電_訊號，並將該最大功率限制電顯該電流感測訊號進行比較運算，用以輪出—功率限制訊 16 M277178A driving wealth-generating unit, which is connected to a de-limiting comparator, a surface lag comparison circuit, a feedback terminal of the power supply, the sensing terminal of the power supply, and the power switch. The scale voltage Nathorn, the -voltage_domain and the current sensing signal are used to output the driving signal to the power switch. For example, if you apply for a switching control device with fine discrimination and low health protection, the input power supply voltage and the limit power that are composed of the injection source group and the Qing Jiaqing voltage source will change. After the source is added, the maximum power limit voltage is output. 3. If you are applying for a special M 丨 reported 15 M277178 control device with a low price and a low dragon tilt, the drive signal generation unit includes:-a p-side comparator connected to the power supply The feedback terminal and the sensing terminal receive the voltage feedback signal and the current sensing signal, and calculate and compare the voltage feedback signal and the current sensing signal according to a comparison operation to output-modulate the output signal; a logic circuit , Connected to the power-limiting comparator and the pwM comparator, receiving the power-limiting signal and the modulation output signal for outputting a reset signal; and the positive and negative signals thereof are connected to the hysteresis comparison circuit A reset terminal is connected to the logic circuit, a clock terminal is connected to the _ vibrator and an output terminal is connected to the power switch, which receives the low dragon 1 «, Saga domain, and the ㈣Ca motion signal to the Power switch. 4. The switching control relay with output power limitation and low voltage protection as described in item 3 of the scope of patent application, wherein the flip-flop can be selected from D-type flip-flop, SR-type flip-flop or jk-type One of the group combinations of flip-flops. 5. — A switching control device with output power limit, used in a power supply, follows-changes in the input power voltage, and then controls and adjusts a power switch-the drive includes:-Orange voltage generating unit ， It is a voltage source that performs calculations with the transformer to output the maximum power limit cage. $ The original electric power limit comparator is connected to the clamp generator unit and the power supply: the test terminal, which is connected to the Distinguish the display-electricity_signal, and compare the current sensing signal of the maximum power-limiting electrical display with the comparison operation for the round-out-power-limiting signal 16 M277178

-驅動訊號產生單元，連接於該辨限概較^、該賴供應器之一回授端、該電源供應器之該感測端及該功率開關，係接收該功率限制訊號、-電壓回授訊號及該電流_訊號，㈣輸出該轉訊號到該功率開關；藉此，當該輸入電源電壓變動時，該最大功率限制電壓會隨之改變，進而調整㈣雜概娜細職功率_峨，健嫩調整該驅動訊號產生單元輸tn之該，轉喊的工作職，贿舰繼電源供應器之一次側電流。 6·如申請專利細第5項所述之具有輸出辨限制之切換式控制裝置，更包括有-磁雜較電路，係接收等關之該輪人電源霞與—顯臨界電壓範圍值，經比較運算後，係輸出或截止一低電壓麟訊號。 7.如申請專魏，項所述之具有輸出功率關之娜式控難置，其中-The driving signal generating unit is connected to the identification limit ^, a feedback terminal of the power supplier, the sensing terminal of the power supply and the power switch, which receive the power limit signal,-voltage feedback The signal and the current _ signal, output the transfer signal to the power switch; by this, when the input power supply voltage changes, the maximum power limit voltage will be changed accordingly, so as to adjust the hybrid power Jiannen adjusted the driving signal generation unit to lose tn, and switched to the job, bribe the ship to follow the primary current of the power supply. 6. The switchable control device with output discrimination limit as described in item 5 of the patent application, including-magnetic miscellaneous comparison circuit, which is the receiver's power supply and the value of the critical voltage range. After the comparison operation, a low-voltage Lin signal is output or turned off. 7. According to the application for Wei, the Na-type control with output power is difficult to set up, where

該箝制電壓產生單元由-加法嶋一限制電壓源所組成，該加法器將變動的該輸入電源電壓與該限制電壓源進行加法運算後，係輸出該最大功率限制電壓。 Μ 之切換式控制裝置，其中 8·如申請專纖圍第5項所述之具有輸出功率限制該驅動訊號產生單元係包括有·· - PWM比較器，連接到該電源供應器之回授端與感測端，係接收該電壓回授訊號與該電减測訊號，根觀較運算該電壓賴訊號與該電流感測訊號，用以輸出一調變輸出訊號； 17 M277178 一邏輯電路’連接於該辨關比較II與該PWM味il，係接收該功率限制❿虎與该調變輸出訊號用以輸出一重置訊號；及爲虎’用以細該驅動訊正反為，其一輸入端連接於該磁滯比較電路、一重置端連接於該邏輯電路、-·财胁_咖及,侧細辨開㈣接收該低電壓磁滞訊號、該重置訊號及一振盈1 號到該功率開關。 9.如申請專利範圍第8項所述之具有輸出功率限制之該正反器可選自於D型正反器、SR型正反、▲制衣置，其中之一反型正反器之群組組合The clamping voltage generating unit is composed of an addition-limiting voltage source, and the adder adds the variable input power voltage to the limiting voltage source and then outputs the maximum power limiting voltage. Switching control device of Μ, which has the output power limitation as described in Item 5 of the application. The drive signal generating unit includes a PWM comparator connected to the feedback terminal of the power supply. And the sensing end, the voltage feedback signal and the electric subtraction measurement signal are received, and the voltage Lai signal and the current sensing signal are calculated based on the comparison to output a modulation output signal; 17 M277178 a logic circuit 'connection In the identification comparison II and the PWM taste, it is to receive the power limit signal and the modulation output signal for outputting a reset signal; and for the tiger 'to fine-tune the driving signal, the input is an input The terminal is connected to the hysteresis comparison circuit, a reset terminal is connected to the logic circuit, and the financial threat is cautious, and the side is discerned to receive the low-voltage hysteresis signal, the reset signal, and a Zhenying No. 1. To the power switch. 9. The forward and reverse device with output power limitation as described in item 8 of the scope of the patent application may be selected from the group consisting of D-type forward and reverse devices, SR-type forward and reverse, and ▲ clothes-making equipment. Group combination

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