M349158 八、新型說明： 【新型所屬之技術領域】 =新型係有關—_動電路’尤指—種用於驅動發光二極體且 力=輸入電力的大小控雜人電力驗波寬度以輕其功率 = 極體驅動電路。 t』1九一 【先前技術】 由於此源控制及環保之需求’為避免能源的浪費，提升功率 與總耗電量(I見2力tr備设計時的重要考量，而功率因素指的是有效功率 二值二二垃之間的關係，也就是有效功率與總耗電量(視在功率) 的匕值’有效功率愈接近總耗電量，則功率因素愈高，亦即工作效率愈好羊) 陶峨升、減少梅職之伽，加 普遍使用的m m 電作效率，而隨著發光二極體 «所需面臨的問題/升發光二極體驅動電路的功率因素«為各家 電路60傳輸至—電力轉換單元20以轉換為妗屮雷 r:::光:鋪30發光，且該電路_更包含-脈寬調變單元二，該 I 鮮元9G由嶋轉換單元縣得—回授訊號 時，透過4=1的大小調整輪人電力的脈波寬度，使輪入電力上升 的穩ί = 早::縮減物^ 成本增加的缺失。、，"因权正電路，將造成多一級的功率損失及生產 【新型内容】 本新型的主要目的，在於改善上述缺失 力的脈波寬度維持在功率固素可達到標準值的範圍。時，輸入電 取得提出一種發光二極體驅動電路，該驅動電路係 取传電力·輸入電力以驅動至少—發光二極體，其包括有—功因校正 5 • M349158 電路、-電力轉換單元、-脈寬調變單元及_阻抗調變翠元，其中，該功M349158 VIII, new description: [New technology field] = new type related - _ dynamic circuit 'especially - a kind used to drive the light-emitting diode and the force = input power of the size of the control person's power inspection width to light Power = pole drive circuit. t』1九一[Previous technology] Due to the need of this source control and environmental protection, in order to avoid energy waste, increase power and total power consumption (I see 2 important considerations when designing, and power factor refers to The relationship between the effective power binary value and the second and second garbage, that is, the effective power and the total power consumption (apparent power). The closer the effective power is to the total power consumption, the higher the power factor, that is, the higher the working efficiency. Good sheep) Tao Shusheng, reducing the gamma of the plum, plus the commonly used mm electro-efficiency, and with the problem of the light-emitting diode «receiving the power factor of the LED driver circuit « for each circuit 60 The transmission to the power conversion unit 20 is converted into a 妗屮雷r:::light: pu 30 illumination, and the circuit _ further includes a pulse width modulation unit 2, the I fresh 9G is obtained by the 嶋 conversion unit county When the signal is given, the pulse width of the wheel power is adjusted by the size of 4=1, so that the turn-in power rises steadily = early:: the reduction of the cost reduction. ,, " Because of the positive circuit, it will cause more than one level of power loss and production. [New content] The main purpose of this new type is to improve the pulse width of the above-mentioned missing force to maintain the range of power solids up to the standard value. In the case of input power, a light-emitting diode driving circuit is proposed, which transmits power and input power to drive at least a light-emitting diode, which includes a power factor correction 5, a M349158 circuit, a power conversion unit, - pulse width modulation unit and _ impedance modulation uiyuan, where the work
«力源與-咖單元，哪得該輸人電力並藉該開關單 :::輸入電力流經功因校正電路的時序’而該電力轉換單元經該功因校 正電路取得輸人電力且轉換為-驅動發光二極體的輸出電力並輸出一回授 訊就至雜寬婦單元，而該脈_變單元魅—導聽棚單元的脈波 訊號’並藉該赌訊號蚊麵波峨的麵_，此外，該阻抗調變單 域連接魏力縣該賴單元，且_p單元1設有至少兩相異阻 抗之電力路輕，並自該輸入電力取得—電壓偵測訊號以決定電力路徑的等 ^阻抗值而調整_授職的別、，藉此控繼脈波城的料時距以調 整該輸入電力麟_校正電路傳導至該電力轉鮮元畴序，使輸入電 力上升時’輸人電力的脈波寬度轉在辨时可_鮮值的範圍。 經由以上可知，本新型透電路從兩級整合在—級完成的技術方 f，相較於習知技術達到的有益效果在於可有效減少耗損的電力而提高輸 出效率，並減少組成零件而節省生產成本。 【實施方式】 有關本新型之詳細說明及技術内容，現就配合圖式說明如下： e月參閲『圖2』所示’本新型為一種發光二極體驅動電路，該驅動電路 設置於—電力源1G及至少-發光二極體30之間，其包括有-功因校正電 路邰、-電力轉換單元20、一脈寬調變單元4〇及一阻抗調變單元％，其 中、，該功因校正電路6〇連接該電力源1〇及該電力轉換單元2〇，並將該電 力源10的輸入電力Vin傳輸至該電力轉換單元2〇，且該功因校正電路的 更連接-_單元7〇 ’藉該_單元％的料及與截止決定輸人電力％ 經功因校正電路0G傳輸至該電力轉換單元μ糾序，使魏力轉換單元 2〇轉換该輸入電力Vm為一驅動發光二極體3〇的輸出電力ν⑽丨而該脈寬 调變單元⑽係連接該f力源1()與該_單元π，並產生—導通該開關= 疋7〇的脈波訊號S2，且自通過該電力轉換單元2〇的輸入電力vin中榻取 一回授訊號S1以決定該脈波峨S2的導通時距’此外，雜抗調變單元 50係連接該電力源10與該開關單元7〇，且與該開關單元7〇之間設有至少 6 •M349158 阻抗之電力路I，並由該輸人電力Vin取得—電壓細訊號V1以決 =力T的敎阻抗值而罐回授峨si的大小，藉以碰脈波訊號^ 入雷制輸人電力.流經功因校正電路6G的時序，藉此將該輪 , m之脈波寬度蝴在神因輯到標雜的細，如是構成本新 型的主要架構，使本麵可根據該電力源ω輸人電力v 率因素，進而符合市場所需。 “功 另明參閱『圖3』所示’係為本新型的電路架構示意圖，在本圖的實施 例中’該阻抗調變單元5〇係包含_連接該電力源1()的第—開關Μ以及一«Power source and - coffee unit, where should the input power and borrow the switch list::: input power flows through the timing of the power factor correction circuit' and the power conversion unit obtains the input power through the power factor correction circuit and converts For driving the output power of the light-emitting diode and outputting a feedback to the heterosexual unit, and the pulse-signal of the singular-sense unit is borrowed from the mosquito wave In addition, the impedance modulation single domain is connected to the Wei Li County unit, and the _p unit 1 is provided with at least two different impedance power paths, and the voltage detection signal is obtained from the input power to determine the power. Adjusting the impedance value of the path, etc., and adjusting the time interval of the pulse wave city to adjust the input power to the phase circuit of the power conversion circuit to increase the input power. 'The pulse width of the input power can be changed to the range of the fresh value. It can be seen from the above that the novel transmissive circuit is integrated from the two-stage technology-level implementation, and the beneficial effects achieved by the prior art are that the power consumption can be effectively reduced, the output efficiency is improved, and the components are reduced to save production. cost. [Embodiment] The detailed description and technical contents of the present invention are described below with reference to the following figures: e month, see "Figure 2", the present invention is a light-emitting diode driving circuit, and the driving circuit is disposed at - Between the power source 1G and at least the light emitting diode 30, the power factor correction circuit 邰, the power conversion unit 20, the pulse width modulation unit 4〇, and an impedance modulation unit % are included. The power factor correction circuit 6 is connected to the power source 1 and the power conversion unit 2, and transmits the input power Vin of the power source 10 to the power conversion unit 2, and the connection of the power factor correction circuit is -_ The unit 7 〇 'by the _ unit % of the material and the cutoff decision input power % is transmitted to the power conversion unit μ by the power factor correction circuit 0G, so that the Weili conversion unit 2 〇 converts the input power Vm into a driving illuminating The output power of the diode 3〇 is ν(10)丨, and the pulse width modulation unit (10) is connected to the f-force source 1() and the _ unit π, and generates a pulse signal S2 that turns on the switch=疋7〇, and From the input power vin of the power conversion unit 2〇 A feedback signal S1 is used to determine the conduction time interval of the pulse wave S2. Further, the hybrid anti-modulation unit 50 is connected to the power source 10 and the switch unit 7A, and at least between the switch unit 7〇 and the switch unit 7〇. 6 • M349158 Impedance power path I, and is obtained by the input power Vin—the voltage fine signal V1 is determined by the 敎 resistance value of the force T and the tank is returned to the size of the 峨si, so as to touch the pulse signal ^ into the lightning system The electric power flows through the timing of the power factor correction circuit 6G, thereby pulsing the pulse width of the wheel, m, to the fineness of the standard, and thus constitutes the main structure of the novel, so that the surface can be based on the power The source ω inputs the power v rate factor, which in turn meets the market demand. "See also "Figure 3" for a new schematic diagram of the circuit architecture. In the embodiment of the figure, the impedance modulation unit 5 includes the first switch that connects the power source 1 (). Μ and one
連接該第-開_、該關單元7〇韻脈_變單元⑽㈣二開關52， 該開關單元70、該第-_ 51與該第二_ 52係為金氧半場效電晶體 (MOSFET) ’該第二開關52與該開關單元7〇之間設有一第一電阻幻及 =與該第-電阻R卜該第二關52並聯的第二電阻Μ，義脈寬調變單 元40係為一功率因素校正Ic。 而本新型的電路運作方式如下所述，起初，該輸入電力Vin於第—電 位（如110V)時’該輸入電力Vin經由一分壓電路8〇分壓產生電壓偵測訊 號VI至該第一開關51，此時，該第一開關51尚未導通並輸出一高準位的 觸發訊號V3至該第二開關52使該第二開關52呈導通狀態，且該第一電阻 R1與該第二電阻R2呈相互並聯構成較小的等效阻抗值，使該電力轉換單 元20產生較大的回授訊號S1 (即流經該開關單元7〇的電流），令該第二開 關52於該第一電阻R1與該第二電阻们並聯的節點上產生一相對低準位的 控制訊號V2且傳輸至該脈寬調變單元40 ’該脈寬調變單元40則根據該控 制訊號V2的準位而輸出脈波訊號S2至該開關單元70，使該驅動電路的功 率因素達到預設值（如0.9)。 當該輸入電力Vin提升至第二電位（如180V或超過180V)時，該輪 入電力Vin的脈波寬度則隨輸入電力Vin的電位上升而產生縮減，導致功率 因素產生下降的趨勢，此時，該輸入電力Vin經該分壓電路80產生之電壓 偵測訊號VI亦隨之上升而導通該第一開關51，且該第一開關51輸出低準 位的觸發訊號V3至該第二開關52，使該第二開關52呈關閉狀態，如此， 7 • M349158 該電力轉解元2〇的喊城S1僅通·k修把（具雜 阻抗值）’並提供該脈寬調變單元40-相對高準位的控制訊㈣，而= 寬調變單元⑼雕據該浦婦u V2婦贿遠訊號s2轉稱距^蔣 此脈波職幻傳輸至該開關單元70，藉以控制該輸入電力.傳輪至= 力轉換單το 20的時序，而將功率因素提升至預設值。 人Connecting the first open_, the off unit 7 〇 _ _ unit (10) (four) two switches 52, the switch unit 70, the first - 51 and the second _ 52 is a metal oxide half field effect transistor (MOSFET) ' A second resistor = is disposed between the second switch 52 and the switch unit 7〇, and a second resistor = is connected in parallel with the second resistor 52. The sense pulse width modulation unit 40 is a Power factor correction Ic. The circuit operation mode of the present invention is as follows: initially, when the input power Vin is at the first potential (such as 110V), the input power Vin is divided by a voltage dividing circuit 8 to generate a voltage detecting signal VI to the first a switch 51, at this time, the first switch 51 has not been turned on and outputs a high level trigger signal V3 to the second switch 52 to turn the second switch 52 into a conducting state, and the first resistor R1 and the second The resistor R2 is connected in parallel with each other to form a smaller equivalent impedance value, so that the power conversion unit 20 generates a larger feedback signal S1 (ie, a current flowing through the switching unit 7〇), so that the second switch 52 is in the first A control signal V2 of a relatively low level is generated on a node of the resistor R1 and the second resistor, and is transmitted to the pulse width modulation unit 40. The pulse width modulation unit 40 is based on the level of the control signal V2. And outputting the pulse signal S2 to the switching unit 70, so that the power factor of the driving circuit reaches a preset value (such as 0.9). When the input power Vin is raised to the second potential (eg, 180V or more than 180V), the pulse width of the wheeled power Vin decreases as the potential of the input power Vin rises, resulting in a tendency for the power factor to decrease. The voltage detection signal VI generated by the input voltage Vin via the voltage dividing circuit 80 also rises to turn on the first switch 51, and the first switch 51 outputs the low level trigger signal V3 to the second switch. 52, the second switch 52 is in a closed state, so that: 7 M349158 the power transfer unit 2 〇 shouting city S1 only pass · k repair (with impurity impedance value) ' and provide the pulse width modulation unit 40 - a relatively high level of control information (4), and = wide adjustment unit (9) according to the Pu woman u V2 woman bribe remote signal number s2 transfer distance ^ Jiang this pulse wave job transfer to the switch unit 70, thereby controlling the input Power. Transfer to = the timing of the force conversion single το 20, and raise the power factor to the preset value. people
綜上所述，本新型主要係透過該阻抗調變單元5〇根據輸人電力V 大小來調整阻抗麵單元5G與·單元7Q之_阻抗，藉讀制該 機早U㈣授信韻大小，使該脈寬調、鮮元W依雜咖#號^控 制該腺波訊號S2的導通時距，進而控制該輸入電力νώ經功因校正電路^ _至該電力轉換單元20的時距，藉以控制輸入電力他的脈波寬度維持 在功率因素可達到標準值的範圍。 經由以上可知，本新型透過將電路從兩級整合在—級完成的技術方 案’相較於習知技術_的有益效果在於可极減少賴㈣力而提高輸 出效率，並減少組成零件而節省生產成本。 上述僅為本新型的較佳實施例而已，並非用來限定本新型之實施範 圍即凡依本型申睛專利範圍之内容所為的等效變化與修飾，皆應為本 新型之技術範疇。 M349158 【圖式簡單說明】 圖1，係為傳統發光二極體驅動電路示意圖。 圖2，係為本新型的方塊示意圖。 圖3，係為本新型的電路架構示意圖。 【主要元件符號說明】 10..............電力源 20..............電力轉換單元 30..............發光二極體 40..............脈寬調變單元 50 ..............阻抗調變單元 51 ..............第一開關 52 ..............第二開關 60..............功因校正電路 70..............開關單元 80..............分壓電路 90..............回授控制單元In summary, the present invention mainly adjusts the impedance of the impedance surface unit 5G and the unit 7Q according to the magnitude of the input power V through the impedance modulation unit 5, and reads the U (four) credit quality of the machine to make the Pulse width adjustment, fresh element W 依 咖## control the conduction time of the gland wave signal S2, and then control the input power ν ώ power factor correction circuit ^ _ to the power conversion unit 20 time interval, thereby controlling the input The width of his pulse is maintained in a range where the power factor can reach the standard value. It can be seen from the above that the novel technical solution of integrating the circuit from two stages in the level-by comparison with the prior art has the beneficial effect of reducing the (four) force and improving the output efficiency, and reducing the component parts to save production. cost. The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention, that is, the equivalent variations and modifications of the scope of the present invention are intended to be within the scope of the present invention. M349158 [Simple description of the diagram] Figure 1 is a schematic diagram of a conventional LED driving circuit. Figure 2 is a block diagram of the present invention. Figure 3 is a schematic diagram of the circuit architecture of the present invention. [Description of main component symbols] 10..............Power source 20..................Power conversion unit 30........ ......Light-emitting diode 40.............. Pulse width modulation unit 50..............-impedance modulation unit 51 ..............First switch 52..............Second switch 60............. Power factor correction circuit 70..............Switch unit 80.............. Voltage divider circuit 90... ..... feedback control unit
Vin.............輸入電力Vin.............Input power
Vout.............輸出電力 VI..............電壓偵測訊號 V2..............控制訊號 V3..............觸發訊號 51 ..............回授訊號 52 ..............脈波訊號 R1..............第一電阻 R2 第二電阻 9Vout.............Output power VI..............Voltage detection signal V2.............. Control signal V3..............trigger signal 51 ..............return signal 52 ............ .. pulse signal R1..............first resistor R2 second resistor 9