M409670 五、新型說明： 【新型所屬之技術領域】 本創作是有關一種發光二極體之驅動裝置及其燈具，特別是一種 電路簡單且具有較佳功率因數之發光二極體之驅動裝置及其燈具。 【先前技術】M409670 V. New description: [New technical field] The present invention relates to a driving device for a light-emitting diode and a lamp thereof, in particular to a driving device of a light-emitting diode with simple circuit and better power factor and Lighting. [Prior Art]
發光二極體(light-emitting diode，LED)具有體積小、使用壽命長以 及省電等優點，因此發光二極體已廣泛應用於多種照明以及裝飾等用 途。請參照ffi 1，-種習知之以4流電驅動之發光二極體架構是將交流 電源ACU、AC2經過-整流電路n將交流電轉換為直流電後施加於發 光-極體I2。經整流後之直流電壓會隨著時間變化，其波形如圖^所 不。由於電流的大小會隨著電壓的變化而改變，因此，可再設置一定 電流電路13與發光二極體u _接，以限制電流的最大侧而避免發 光二極體12燒毀》 請再參照圖2a，然而，整流電路11之輸出電壓需大於負載之驅動 電壓vd(即發S二極體12之啟動電壓以及定電流電路13之操作電壓之 總合)才能驅動發光二極體12發光。因此，在期間T1時，輸出電壓大 於驅動電壓Vd，發光二_ u發光，而在躺η時，輸出電壓小於 驅動電屢vd，發光二極體12不發光。換言之，發光二極體12所發出 之光源隨著電壓變化而閃爍，因而不適合作為主照明之應用。 為了解決發光二極體12隨著電壓變化而間歇發光的問題，可於整 流電路11之直流側輸出端跨接-穩壓電容C以及-放電電黎 定整流電路11之輸出電壓，其電驗形如圖2b所示，進而解決^ 問題。然而，視穩壓電容C的大小，電流之相位會超前電壓，、成 流以及電壓之間不同程度的相位差’而導致整個發光I⑥之功率因數 3 M409670 S知之主動式或填谷被動式功率因數修正電路(p〇 wer factor c—雖然可修正系統之功率因數，但其體積大、成本高， 甚至必須在高頻下操作，因而限制了應用範圍。此外，發光二極體負 載改變時’亦必彡貞重新設計娜式電社電路設計，_大幅增加發 光二極體燈具之設計時程。 綜上所述，如何以較為簡單的電路即可驅動不同負載之發光二極 體’且整體發光系統具有較佳之功率因數便是目前極需努力的目標。 【新型内容】 本創作提供一種發光二極體之驅動裝置及其燈具，其是在整流電 路之交流側設置-錢，藉以延遲電流之相位，以補償觀電容所造 成電流超前之相位，進而改善整體發光系統之功率因數，且可應用於 不同負載之發光二極體。 本創作一實施例之發光二極體之驅動裝置包含一整流電路、一第 一電谷以及一電感。整流電路包含一交流側輸入端以及一直流側輸出 端，用以提供一直流電壓電源供應一發光二極體負載。第一電容跨接 於整流電路之直流側輸出端，用以穩定整流電路之輸出電壓。電感串 接於整流電路之父流側輸入端其中之一，用以補償第一電容所造成之 電壓以及電流間之相位偏移。 本創作另一實施例之發光二極體燈具包含一驅動裝置以及一發光 二極體負載。驅動裝置包含一整流電路、一第一電容以及一電感。整 流電路包含一交流側輸入端以及一直流側輸出端，用以提供一直流電 壓電源供應一發光二極體負載。第一電容跨接於整流電路之直流側輪 出端，用以穩定整流電路之輸出電壓。電感串接於整流電路之交流側 輪入端其中之一，用以補償第一電容所造成之電壓以及電流間之相位 偏移。發光二極體負載跨接於整流電路之直流側輸出端。 以下藉由具體實施例配合所附的圖式詳加說明，當更容易瞭解本 4 M409670 創作之目的、技抽容、_及其所達紅功效。 【實施方式】 、明參照® 3 ’本創作之-實施例之發光二極體燈具包含—驅動裝置 3以及至少-發光二極體負冑4。驅動裝置3包含一整流電路31、一第 -電容C1以及-電感L。整流電路31包含_交流側輸入端，用以盘 交流電源AC1、AC2電性連接；以及—直流側輸出端，㈣提供一直 流電塵電源供應發光二極體負載4。整流電路31可為—橋式整流電路 或-隔離型整流電路。舉例而言，隔離型整流電路包含—隔離型變壓 器以及多健流二極體。第-電容α跨接於整流電路31之直流側輸 出端，用以穩定紐電路31之輸出電壓^較佳者，可設置—放電電阻 R與第-電容C1並聯。贼L财接於整流電路31之交流側輸入端 其中之一。由於電感L會延遲電流之相位，因此，選擇適當性質之電 感即可補償第-電容C1所造成之電壓以及電流間的相位偏移。 依據上述架構，驅動裝置31可提供電壓以及電流間之相位偏移較 小之直流電壓電源，且其電壓維持大於發光二極體負載之驅動電壓之 狀態，因此，本創作之發光二極體燈具可輸出不閃爍的光線，而可應 用於燈泡或燈管等型式之主要照明。此外，相同規格之驅動裝置31可 應用於多種負載之發光二極體燈具。 於一實施例中，發光二極體負載4可包含一或多個串接或並聯之 發光二極體。請參照圖4a，發光二極體負載4可再包含一與發光二極 體41串接一第一定電流電路42，以避免發光二極體41因電流過大而 燒毀。此外，為了避免第一定電流電路42因整流電路31之輸出電壓 超過其最大耐受電壓(maximum operation voltage)而燒毀，可於第一定電 流電路42之上游側串接一第二定電流電路43。較佳者，設置一齊納二 極體(zener diode)44與第二定電流電路43反向並聯，且其崩潰電壓 (breakdown voltage)小於第二定電流電路43之最大耐受電壓，如此可大 5 M409670 幅提升整個系統之耐壓能力。 舉例而S ’备跨接於節點V1以及V2間之電磨小於齊納二極體糾 之崩潰電餅，電流通過第二定電流電路43，此時第二定電流電路Μ 發揮限流侧，以紐發光二㈣4卜當跨接於節點％以及％間之 電屡大於細二極體44之崩潰電壓時，電流通過齊納二極體44，以避 免第二定電流電路43燒毀。此外，由於齊納二極體44分擔了較大的 跨壓超出的電麼比例才會施加於第一定電流電路a，因此整體電路 的對，壓變化的承受能力可大幅增加，進而提升整體產品的安全性以 及可靠性。於-實施财，發光二極體41串接於第—定電流電路a 以及第二定電流電路43之間亦可獲得_的效果，如圖扑所示。 請參照圖5 ’於-實施例中，第一定電流電路似以及第二定電流 電路43可包含-金氧半場效電晶體(麻1偏e_semi__Light-emitting diodes (LEDs) have the advantages of small size, long service life, and power saving. Therefore, light-emitting diodes have been widely used in various lighting and decoration applications. Please refer to ffi 1, which is known as a four-current-driven LED structure. The AC power supply ACU and AC2 are converted to direct current by a rectifying circuit n and applied to the light-emitting body I2. The rectified DC voltage will change with time, and its waveform is as shown in the figure. Since the magnitude of the current changes with the change of the voltage, the constant current circuit 13 can be further connected to the light-emitting diode u_ to limit the maximum side of the current to avoid the burning of the LED 12". 2a, however, the output voltage of the rectifier circuit 11 needs to be larger than the driving voltage vd of the load (i.e., the sum of the startup voltage of the S diode 12 and the operating voltage of the constant current circuit 13) to drive the LED 12 to emit light. Therefore, in the period T1, the output voltage is greater than the driving voltage Vd, and the light emitting light illuminates, while in the case of lying η, the output voltage is smaller than the driving power frequency vd, and the light emitting diode 12 does not emit light. In other words, the light source emitted by the light-emitting diode 12 flickers as the voltage changes, and thus is unsuitable for the application of the main illumination. In order to solve the problem that the light-emitting diode 12 intermittently emits light with the voltage change, the output voltage of the voltage-stabilizing capacitor C and the discharge-discharge rectifier circuit 11 can be bridged at the DC-side output end of the rectifier circuit 11 The shape is shown in Figure 2b, which solves the problem. However, depending on the size of the regulator capacitor C, the phase of the current will lead the voltage, the phase difference between the current and the voltage, and the power factor of the entire illumination I6 is 3 M409670 S. Active or valley-filled passive power factor Correction circuit (p〇wer factor c—Although the power factor of the system can be corrected, it is bulky, costly, and even has to be operated at high frequencies, thus limiting the application range. In addition, when the load of the LED is changed, It is necessary to redesign the circuit design of Na-type Denshi, _ greatly increase the design time of the LEDs. In summary, how to drive the LEDs of different loads with a simpler circuit and the overall illumination The system has a better power factor, which is currently the goal of hard work. [New content] The present invention provides a driving device for a light-emitting diode and a lamp thereof, which are arranged on the alternating current side of the rectifier circuit, thereby delaying the current. Phase, to compensate for the phase of the current caused by the capacitance, thereby improving the power factor of the overall illumination system, and can be applied to different negative The driving device of the light emitting diode of the present embodiment comprises a rectifying circuit, a first electric valley and an inductor. The rectifying circuit comprises an AC side input end and a DC side output end for Providing a direct current voltage power supply to provide a light emitting diode load. The first capacitor is connected to the DC side output end of the rectifier circuit for stabilizing the output voltage of the rectifier circuit. The inductor is serially connected to the parent side input end of the rectifier circuit. First, to compensate for the voltage caused by the first capacitor and the phase shift between the currents. The LED lamp of another embodiment of the present invention comprises a driving device and a light-emitting diode load. The driving device comprises a rectifier circuit a first capacitor and an inductor. The rectifier circuit includes an AC side input end and a DC side output end for providing a DC voltage supply to the LED load. The first capacitor is connected across the DC side of the rectifier circuit. The wheel end is used to stabilize the output voltage of the rectifier circuit. The inductor is serially connected to one of the AC side wheel terminals of the rectifier circuit for compensation The voltage caused by a capacitor and the phase shift between the currents. The LED load is connected across the DC side output of the rectifier circuit. The following is a more detailed description of the specific embodiment with the accompanying drawings. The purpose of this 4 M409670 creation, the technical capacity, _ and its red effect. [Embodiment], Ming reference ® 3 'The present invention - the embodiment of the LED luminaire includes - drive device 3 and at least - illuminate The driving device 3 includes a rectifying circuit 31, a first capacitor C1 and an inductor L. The rectifying circuit 31 includes an _AC side input terminal for electrically connecting the AC power sources AC1 and AC2; The DC side output terminal, (4) provides a DC current power supply for the LED load 4. The rectifier circuit 31 can be a bridge rectifier circuit or an isolated rectifier circuit. For example, the isolated rectifier circuit includes an isolated transformer and Multiple health diodes. The first capacitor α is connected to the DC side output of the rectifier circuit 31 for stabilizing the output voltage of the circuit 31. Preferably, the discharge resistor R is connected in parallel with the first capacitor C1. The thief L is connected to one of the AC side input terminals of the rectifier circuit 31. Since the inductance L delays the phase of the current, it is possible to compensate for the voltage caused by the first capacitor C1 and the phase shift between the currents by selecting an appropriate inductance. According to the above structure, the driving device 31 can provide a DC voltage power source with a small phase shift between voltage and current, and the voltage thereof is maintained at a state greater than the driving voltage of the LED load. Therefore, the LED lamp of the present invention is created. It can output light that does not flicker, but can be applied to the main illumination of the type such as bulb or tube. In addition, the drive unit 31 of the same specification can be applied to a variety of loaded light-emitting diode lamps. In one embodiment, the LED load 4 can include one or more LEDs connected in series or in parallel. Referring to FIG. 4a, the LED load 4 may further include a first constant current circuit 42 connected in series with the LED diode 41 to prevent the LED diode 41 from being burnt due to excessive current. In addition, in order to prevent the first constant current circuit 42 from being burnt due to the output voltage of the rectifier circuit 31 exceeding its maximum operating voltage, a second constant current circuit may be connected in series on the upstream side of the first constant current circuit 42. 43. Preferably, a Zener diode 44 is disposed in anti-parallel with the second constant current circuit 43 and its breakdown voltage is less than the maximum withstand voltage of the second constant current circuit 43. 5 M409670 increases the pressure resistance of the entire system. For example, the electric grinder between the nodes V1 and V2 is smaller than the eraser electric cake of the Zener diode, and the current passes through the second constant current circuit 43. At this time, the second constant current circuit Μ functions as the current limiting side. When the voltage between the nodes % and % is more than the breakdown voltage of the fine diode 44, the current passes through the Zener diode 44 to prevent the second constant current circuit 43 from being burnt. In addition, since the ratio of the larger voltage across the Zener diode 44 is applied to the first constant current circuit a, the resistance of the integral circuit can be greatly increased, thereby improving the overall Product safety and reliability. In the implementation, the light-emitting diode 41 is connected in series between the first constant current circuit a and the second constant current circuit 43 to obtain an effect of _, as shown in the figure. Referring to FIG. 5', in the embodiment, the first constant current circuit and the second constant current circuit 43 may include a gold-oxygen half field effect transistor (Ma 1 partial e_semi__)
Md-Effect Transistor ’ MOSFET)M以及一控制電路cl，其中控制電 路⑶控制金氧半場效電晶體M導通或斷開。依據此結構，當節點 之電壓大於節點VB之時，控制電路CL控制錢半場效電晶體Μ 導通’電流經由金氧半場效電晶體Μ流向節點Μ。由於金氧半場效 電晶體Μ之元件特性，通過電流之最大值可受到限制。 需注意者’發光二極體41可為單一封裝體再進行串接，亦可利用 黃光微影製轉多個發光二極體.41串接於單―晶片再進行封裝。此 外Κ電流電路42、第二定電流電路43以及齊納二極體44亦可 與發光二極體41整合於單一封裝财。於一實施例中，第一定電流電 路42、第二定電流電路43以及齊納二極體44亦可選擇性地整合^驅 動裝置3a、3b令，如圖6以及圖7所示。 〇、 需注意者’軸將定電流電路整合於驅麟置巾可舰制了驅動 裝置應用於不同負載範圍之發光二極體。然而’針對不同負载之發光 二極體’電路設計人貝僅需挑選適當之定電流電卿可完成發光二極 體燈具之設計。相較於重新設計切換式電源之電路設計，採用本發明 之驅動裝置仍可大幅縮短發光二極體燈具之設計時程。 6 M409670 請繼續參照圖6，於一實施例中，驅動裝置3a可包含一第二電容 C2，其跨接於整流電路31之交流側輸入端以及電感l之下游側，以與 電感L形成一 LC型濾波器，藉以濾除高頻雜訊。請參照圖7，驅動裝 置3b可更包含一第三電容C3，其跨接於整流電路之交流側輸入端31 以及電感L之上游側，以與電感L以及第二電容器C2形成一冗形濾波 器，藉以濾除高頻雜訊。 請參照圖8，於一實施例中，驅動裝置3c可包含一突波吸收器5， 其跨接於整流電路31之交流側輸入端以及電感L之上游側。突波吸收 器5可在交流電源產生突波或靜電放電發生時箝制交流電之節點aci 以及AC2間之電壓陡升。此外，驅動裝置艾亦可包含—保險絲f，其 串接於電感F之上游側。保險絲F可在電流過大時熔斷，以保護產品 並提升產品的安全性。 綜合上述，本創作之發光二極體之驅動裝置及其燈具僅在整流電 ，之交流側設置-f感，即可補償顏電容所造成電流超前之相位， 藉以改善整體發光系統之功率因數。此外，高輕以及低電流亦可使 發光二極體產生相同瓦數之功耗’故本創作之駆動裝置所包含之電感 之體積相對較小’而可應用於較小之發光二極體燈具。相較於習知之 主動式或料被賦功糊歸正電路，本靖之發光二輔之驅動 裝置不僅具㈣路鮮、成本低、體制、等優點，魏合定電流電路 即能夠以相同規格之驅動裝置應用於不同負载之發光二極體燈具，因 此可大幅縮短電路設計的時程。 以 以上所述之實施例僅是為說明本創作之技術思想及特點，其目 在使熟習此項技藝之人士能夠瞭解本創作之内容並據以實施，奋 以之限定本創作之專利範圍，即大凡依本創作所揭示之精神所;= 等變化或修飾，仍應涵蓋在本創作之專利範園内。 二 7 M409670 【圖式簡單說明】 圖1為一示意圖，顯示習知以直流電驅動發光二極體之架構。 圖2a以及2b為一示意圖，顯示包含以及未包含穩壓電容之直流電 壓之波形。 圖3為一示意圖，顯示本創作一實施例之發光二極體燈具。 圖4a以及4b為一示意圖，顯示本創作一實施例之發光二極體負載。 圖5為一示意圖，顯示本創作一實施例之定電流電路。 圖6至圖8為一示意圖，顯示本創作之多個實施例之發光二極體 燈具。 【主要元件符號說明】The Md-Effect Transistor 'MOSFET' and a control circuit cl, wherein the control circuit (3) controls the metal oxide half field effect transistor M to be turned on or off. According to this configuration, when the voltage of the node is greater than the node VB, the control circuit CL controls the flow of the half-field effect transistor Μ conduction current to the node 经由 via the MOSFET. Due to the component characteristics of the gold-oxygen half-field transistor, the maximum value of the passing current can be limited. It should be noted that the light-emitting diode 41 can be serially connected to a single package, or can be turned into a plurality of light-emitting diodes by using a yellow light micro-shadow. The external current circuit 42, the second constant current circuit 43, and the Zener diode 44 may be integrated with the light-emitting diode 41 in a single package. In one embodiment, the first constant current circuit 42, the second constant current circuit 43, and the Zener diode 44 are also selectively integrated with the driving devices 3a, 3b, as shown in FIGS. 6 and 7. 〇, need to pay attention to the 'axis of the constant current circuit integrated in the drive Lin towel can be used to drive the device for different load range of the LED. However, the design of the LEDs for different loads can only be done by selecting the appropriate constant current. Compared with the circuit design for redesigning the switching power supply, the driving device of the present invention can still greatly shorten the design time course of the light-emitting diode lamp. 6 M409670 Please continue to refer to FIG. 6. In an embodiment, the driving device 3a may include a second capacitor C2 connected to the AC side input end of the rectifier circuit 31 and the downstream side of the inductor l to form a contact with the inductor L. LC type filter to filter out high frequency noise. Referring to FIG. 7, the driving device 3b further includes a third capacitor C3 connected across the AC side input end 31 of the rectifier circuit and the upstream side of the inductor L to form a redundant filter with the inductor L and the second capacitor C2. In order to filter out high frequency noise. Referring to FIG. 8, in an embodiment, the driving device 3c may include a surge absorber 5 connected across the AC side input end of the rectifier circuit 31 and the upstream side of the inductor L. The surge absorber 5 clamps the voltage between the node aci of the alternating current and AC2 when the AC power source generates a surge or electrostatic discharge. In addition, the drive unit may also include a fuse f connected in series to the upstream side of the inductor F. Fuse F can be blown when the current is too high to protect the product and improve product safety. In summary, the driving device of the luminous diode of the present invention and the lamp thereof are only arranged on the alternating current side of the rectifying electric power, and the phase of the current caused by the color capacitance can be compensated for, thereby improving the power factor of the overall lighting system. In addition, the high lightness and low current can also cause the LED to generate the same wattage power consumption. Therefore, the size of the inductor included in the oscillating device of the present invention is relatively small, and can be applied to a smaller illuminating diode lamp. . Compared with the conventional active or material-adjusted circuit, the driving device of the Yasushi Illumination Second Auxiliary has not only (4) fresh road, low cost, system, etc., Wei Heding current circuit can drive with the same specifications. It is applied to LEDs with different loads, which can greatly shorten the time course of circuit design. The embodiments described above are only for explaining the technical idea and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the creation and implement it according to the purpose, and to limit the scope of the patent of the creation. That is to say, according to the spirit revealed by this creation; = such changes or modifications, should still be covered in the patent garden of this creation. 2 7 M409670 [Simple Description of the Drawings] Fig. 1 is a schematic view showing the structure of a conventional LED driving a light-emitting diode. Figures 2a and 2b are schematic views showing the waveforms of the DC voltages including and without the stabilizing capacitors. FIG. 3 is a schematic view showing a light-emitting diode lamp according to an embodiment of the present invention. 4a and 4b are schematic views showing the light-emitting diode load of an embodiment of the present invention. Fig. 5 is a schematic view showing a constant current circuit of an embodiment of the present invention. 6 through 8 are schematic views showing a light-emitting diode lamp of various embodiments of the present invention. [Main component symbol description]
11 整流電路 12 發光二極體 13 定電流電路 3 驅動裝置 3a ' 3b、3c 驅動裝置 31 整流電路 4 發光二極體負載 41 發光二極體 42 第一定電流電路 43 第二定電流電路 44 齊納二極體 5 突波吸收器 AC1、AC2 交流電節點 C 穩壓電容 Cl 第一電容 C2 第二電容 C3 第三電容 8 M409670 CL 控制電路 F 保險絲 L 電感 M 金氧半場效電晶體 R 放電電阻 T1 發光期間 T2 不發光期間 VI、V2 節點 VA ' VB 節點 Vd 驅動電壓11 rectifier circuit 12 light-emitting diode 13 constant current circuit 3 drive device 3a ' 3b, 3c drive device 31 rectifier circuit 4 light-emitting diode load 41 light-emitting diode 42 first constant current circuit 43 second constant current circuit 44 Nanodiode 5 Suppressor AC1, AC2 AC node C Regulator capacitor Cl First capacitor C2 Second capacitor C3 Third capacitor 8 M409670 CL Control circuit F Fuse L Inductor M Gold oxygen half field effect transistor R Discharge resistor T1 During the illuminating period T2 does not emit light VI, V2 node VA ' VB node Vd driving voltage