M399573 I，n技生—輸人電麼；及(2)—功率轉換器，根據 "认電壓’產生-直流輸出電壓與—輸出電流；以及至少 一個直流魏元件㈣’包括至少—地流發光元件電路， ^驗輪出電流而發光’其中該功率模組與該直流發光元件 ’反體藉由線路連接而構成一直流迴路。M399573 I, n technology - input power; and (2) - power converter, according to "recognition voltage' generation - DC output voltage and - output current; and at least one DC Wei component (four) 'including at least - ground current The light-emitting element circuit emits a current and emits light. The power module and the DC light-emitting element are connected to each other by a line to form a DC circuit.
.上述直流發光元件控制電路中，所述之功轉換器重包 括·-功率級，其包括至少—個功率關；—反饋電路，偵 測前述輸出電流，並產生第—反饋峨；—關調光電路， 接收該第-反饋喊，域生第二反饋喊，其巾該比例調. 光電路可X控而調整第二反馈訊號相對於第___反饋訊號之比 例；以及-控織路，雌該第二反饋喊，控制該功率級 中功率開關之操作。其巾n反饋峨可具有連續或不 連續的位階。 功率模組中可更包含：開關或滤波器；遽波器可為低通 濾波器、帶通濾波器、或功因校正電路。In the above DC light-emitting element control circuit, the power converter includes a power stage, which includes at least one power-off; a feedback circuit that detects the output current and generates a first feedback 峨; The circuit receives the first-feedback shouting, and the second feedback of the domain is shouted, and the ratio of the second feedback is adjusted. The optical circuit can adjust the ratio of the second feedback signal to the ___feedback signal by X control; and - control the weaving road, The second feedback of the female is to control the operation of the power switch in the power stage. Its towel n feedback 峨 can have continuous or discontinuous steps. The power module may further include: a switch or a filter; the chopper may be a low pass filter, a band pass filter, or a power factor correction circuit.
上述直流發光元件控制電路t，更宜包含一保護電路， 耦接在該至少一個直流發光元件電路與該功率轉換器之間， 以保護該直流發光元件電路所接收的電壓或電流在一個預 設的範圍内。此保護電路可與直流發光元件電路整合在直流 發光元件燈體之内。 上述直流發光元件控制電路中可包括多個並聯的直流 發光元件燈體。上述直流發光元件燈體中可包括多個並聯的 直流發光元件電路。 底下藉由對具體實施例詳加說明，當更容易瞭解本創作 之目的、技術内容、特點及其所達成之功效。 5 M399573 【實施方式】 本創作適用於任何直流控制之發光元件而不限於為 LED，但因LED為目前最常見之發光元件，故以下以led 為例來加以說明。 請參考第4圖，本創作巧妙利用地線的特性，自功率模 組100經線路1(H、LED燈體200、地線、線路1〇2構成迴 路，且此迴路為直流迴路，因此LED燈體200中：%;兩暴满 50, J77ED« 200的製作成本。$ 了安全起見，可將地線與其他電路或線 路斷開，如圖中X所示。 第5圖示出本創作的其中一個實施例，本實例中功率模 組1〇〇包含整流器20和功率轉換器40。整流器20接收交流 電壓Vac，整流後產生輸入電壓vin ;接著，功率轉換器4〇 接收該輸入電壓Vin，並轉換為直流輸出電壓v〇ut (與輸出 電流lout)供應給LED燈體200。 上述實施例中，能夠調整輸出電壓Vout之直流值，卻並 未使用TRIAC，因此有較佳的功率因素。請參見第6圖，功 率轉換器40中，控制電路43控制功率級41(其中例如但不 限於包括變壓益411和功率開關412)之操作，使功率級41 將來自整流器20之輸入電壓Vin轉換為輸出電壓v〇m。反 饋電路42制輸出電流lGut，並將侧的結果反饋給控制 電路43以維持系統之穩定，其中若功率級41兩端之地電位 不相等，則反饋電路42例如可為光耦合電路；若功率級41 兩端可為相等之地電位，則反饋電路42可為較簡單的電 路。根據本創作之較佳實施例，可在反饋電路42與控制電 路43的路徑上，提供一個比例調光電路44，其接收反饋電 6 路42的輪ii{訊號FB1 ’將其調整為訊號FB2輸人控制電路 4 3其中比例詞光電路4 4可受控將訊號F B 2調整為訊號F B1 的丨值（刀數或倍數），其調整方式可為連續調整（訊號 FB1具有連續的位階）或階段調整（訊號fb2具有不連續的 位=)。藉由調整反饋訊號的值，自然調整了輸出電流， 使得使用者可利用該比例調光電路44調整之亮度。 -中比例調光電路44可為任何可調整輸人與輸出訊號間 比例的數位細比電路，例如但不限於可為可變電阻器。 由於整是安排在反饋路徑上.，而不在輸入電壓 Vm的路彳1上’因此減於先前技術，本創作的方法更能更 增加系統的穩定性。此外，由於亮度的調整不需使用 TRIAC ’使得交流電壓Vae的導通肢仰此被破壞。此種方 法，更此夠提升電子產品之功率因素，減少耗能，並符合較高 標準之功率因素需求。 請參考第7圖。在本創作的其中一個實施例中，可在 力率模組1G0内提供-個開_ U，例如設置在整流器Μ前， 讓使用者可以選擇性地㈣LED開啟或剩。或者，根據 本創作之另-個實施例，可在功率轉換器⑼與錢器2〇之 間提供-健波ϋ 30,其中魏波㈣接收來自整流器2〇 的輸入電壓Vm ’並產生—濾波電壓糧輸人功率轉換器 40。較佳地，該濾波器30例如可為低職波器(1〇w_passfito， LPF)，(band-pass filter,BPF)^iL^afei(power factor correlati〇n，PFC)電路。或者，依據本創作之再一實施 例，可在LED電路5〇接收該輸出電壓v〇ut前，提供一個 保護電路6G，確_ LED電路50所接㈣電壓或電流在 一個預設的範圍内。較佳地，該保護電路6G例如可為過電 M399573 壓保護電路、或過電流保護電路。保護電路60可與LED電 路50整合在LED燈體200内，亦可分開設置。以上各種 安排可以單獨使用或並用。 請參見第8圖，LED燈體200内可包含兩個以上並聯 之LED電路50，而保護電路60可與該多個並聯之led電 路50耦接。再請參見第9圖’可將多個Lm3燈體200並 聯，接收同一輸出電壓Vout。 以上已針對較佳實施例來說明本創作，唯以上所述者， 僅係為使熟悉本技術者易於了解本創作的内容而已，並非用 來限定本創作之權利範圍。在本創作之相同精神下，熟悉本 技術者可以思及各種等效變化。例如，本創作之功率級Μ並 不限於包括變壓器411，也可為同步或非同步降壓電路、升壓 電路、升降壓電路、反壓電路等，舉例而言可如第1〇a_1〇f 圖所不。故在本創作之相同精神下的各種等效變化，均應包 含在本創作的範圍之内。 【圖式簡單說明】 第1A圖為傳統燈體3〇〇接收交流電壓源發亮的示意電路圖。 第1B圖顯示以LED燈體120取代傳統燈體300。 第ic圖顯示為達成第1B圖之結構，LED燈體12〇内部必須 安排複雜的電路。 第圖顯示傳統燈體300之開關或調光控制。 第1E圖顯示裝設LED燈體120之建物内部結構。 第2圖為先前技術中，將交流電壓轉換為直流電壓供應給LED 燈體的示意電路圖。 第3圖為先前技術中，以TRIAC調整LED燈體亮度的示意電 8The DC light-emitting element control circuit t preferably includes a protection circuit coupled between the at least one DC light-emitting element circuit and the power converter to protect the voltage or current received by the DC light-emitting element circuit in a preset In the range. The protection circuit can be integrated with the DC light-emitting element circuit within the body of the DC light-emitting element. The DC light-emitting element control circuit may include a plurality of parallel DC light-emitting element lamps. The above-mentioned DC light-emitting element lamp body may include a plurality of parallel DC light-emitting element circuits. By the detailed description of the specific embodiments, it is easier to understand the purpose, technical content, characteristics and effects of the creation. 5 M399573 [Embodiment] This creation is applicable to any DC-controlled light-emitting component and is not limited to LED. However, since LED is the most common light-emitting component at present, the following is an example of LED. Please refer to FIG. 4, the design cleverly utilizes the characteristics of the ground line, and the self-power module 100 forms a loop through the line 1 (H, the LED lamp body 200, the ground line, and the line 1〇2, and the loop is a DC loop, so the LED In the lamp body 200: %; two full 50, J77ED « 200 production cost. $ For safety reasons, the ground wire can be disconnected from other circuits or lines, as shown by X in the figure. In one embodiment of the creation, the power module 1A in the present example includes a rectifier 20 and a power converter 40. The rectifier 20 receives the AC voltage Vac and rectifies to generate an input voltage vin; then, the power converter 4 receives the input voltage Vin, and converted to a DC output voltage v〇ut (and output current lout) is supplied to the LED lamp body 200. In the above embodiment, the DC value of the output voltage Vout can be adjusted without using the TRIAC, so that there is better power. Referring to Figure 6, in power converter 40, control circuit 43 controls the operation of power stage 41 (such as, but not limited to, including transformer 411 and power switch 412) such that power stage 41 will input from rectifier 20. Voltage Vin is converted to output power The feedback circuit 42 produces an output current lGut and feeds the result of the side to the control circuit 43 to maintain the stability of the system. If the ground potentials across the power stage 41 are not equal, the feedback circuit 42 can be, for example, optically coupled. Circuitry; feedback circuit 42 can be a relatively simple circuit if both ends of power stage 41 can be equal ground potential. According to a preferred embodiment of the present invention, a path can be provided on the path of feedback circuit 42 and control circuit 43. The proportional dimming circuit 44 receives the wheel ii{signal FB1' of the feedback circuit 6 and adjusts it to the signal FB2. The input control circuit 43 can control the signal FB 2 to be adjusted to the signal F. The 丨 value (number of knives or multiples) of B1 can be adjusted continuously (signal FB1 has continuous steps) or phase adjustment (signal fb2 has discontinuous bits =). Naturally adjusted by adjusting the value of feedback signal The output current is such that the user can use the proportional dimming circuit 44 to adjust the brightness. The medium proportional dimming circuit 44 can be any digital fine ratio circuit that can adjust the ratio between the input and output signals, such as but not limited to It is a variable resistor. Since the whole is arranged on the feedback path, and not on the path 1 of the input voltage Vm, thus the prior art is reduced, the method of the present invention can further increase the stability of the system. In addition, due to the brightness The adjustment does not require the use of TRIAC' to make the conduction voltage of the AC voltage Vae fall. This method is more powerful to increase the power factor of the electronic product, reduce energy consumption, and meet the high standard power factor requirements. In one of the embodiments of the present invention, an ON_U may be provided in the force rate module 1G0, for example, in front of the rectifier, so that the user can selectively (4) turn the LED on or off. Alternatively, according to another embodiment of the present invention, a health wave ϋ 30 may be provided between the power converter (9) and the money device 2, wherein the Weibo (4) receives the input voltage Vm' from the rectifier 2〇 and generates a filter The voltage grain input power converter 40. Preferably, the filter 30 can be, for example, a low-frequency filter (BPF), a band-pass filter (BPF), or a power factor correlative (PFC) circuit. Alternatively, according to still another embodiment of the present invention, a protection circuit 6G may be provided before the LED circuit 5 receives the output voltage v〇ut, and the voltage or current connected to the (4) LED circuit 50 is within a preset range. . Preferably, the protection circuit 6G can be, for example, an overvoltage M399573 voltage protection circuit or an overcurrent protection circuit. The protection circuit 60 can be integrated into the LED lamp body 200 with the LED circuit 50, or can be separately provided. The above various arrangements can be used alone or in combination. Referring to Figure 8, the LED lamp body 200 can include more than two LED circuits 50 connected in parallel, and the protection circuit 60 can be coupled to the plurality of parallel LED circuits 50. Referring again to Fig. 9, a plurality of Lm3 lamp bodies 200 can be connected in parallel to receive the same output voltage Vout. The present invention has been described above with reference to the preferred embodiments, and the above description is only for the purpose of making the present invention easy to understand the content of the present invention, and is not intended to limit the scope of the present invention. In the same spirit of the creation, those skilled in the art can think of various equivalent changes. For example, the power stage of the present invention is not limited to including the transformer 411, and may be a synchronous or non-synchronous step-down circuit, a boosting circuit, a buck-boost circuit, a back-pressure circuit, etc., for example, as in the first 〇a_1 〇f Figure does not. Therefore, all equivalent changes in the same spirit of this creation should be included in the scope of this creation. [Simple description of the diagram] Figure 1A is a schematic circuit diagram of the conventional lamp body 3〇〇 receiving AC voltage source. FIG. 1B shows the replacement of the conventional lamp body 300 with the LED lamp body 120. The ic diagram shows that in order to achieve the structure of Fig. 1B, a complicated circuit must be arranged inside the LED lamp body 12A. The figure shows the switching or dimming control of a conventional lamp body 300. Fig. 1E shows the internal structure of the building in which the LED lamp body 120 is mounted. Fig. 2 is a schematic circuit diagram of the prior art for converting an alternating current voltage into a direct current voltage to an LED lamp body. Figure 3 is a schematic diagram of adjusting the brightness of the LED lamp body with TRIAC in the prior art.