TWM457824U - Constant-power LED lighting device - Google Patents
Constant-power LED lighting device Download PDFInfo
- Publication number
- TWM457824U TWM457824U TW102203044U TW102203044U TWM457824U TW M457824 U TWM457824 U TW M457824U TW 102203044 U TW102203044 U TW 102203044U TW 102203044 U TW102203044 U TW 102203044U TW M457824 U TWM457824 U TW M457824U
- Authority
- TW
- Taiwan
- Prior art keywords
- voltage
- current
- value
- working
- driving unit
- Prior art date
Links
Landscapes
- Led Devices (AREA)
Description
本創作係與發光二極體驅動有關，更詳而言之是指一種定功率之發光二極體照明裝置。This creation is related to the LED driver, and more specifically refers to a constant-power LED illumination device.
按，發光二極體之照明裝置包含有一發光二極體晶片以及一驅動單元提供該發光二極體晶片所需之電能。目前市面上的發光二極體晶片規格琳瑯滿目，對於具有相同功率的發光二極體晶片而言，其工作電壓與工作電流之組合種類繁多，以28W之發光二極體晶片為例，其工作電壓與工作電流之組合即有80V/350mA、56V/500mA、40V/700mA等組合，因此，為了驅動如此多種規格組合的發光二極體晶片，目前的方式是針對每一種發光二極體晶片開發一種發光二極體晶片驅動單元。然，對於發光二極體之照明裝置製造商而言，每一種功率的發光二極體晶片都需製造數種驅動單元，不但增加驅動單元庫存的壓力，而且無法以量制價，導致製造成本居高不下。若能開發適用於不同工作電壓與工作電流組合的驅動單元，當可降低發光二極體晶片驅動單元庫存的壓力，並且有效降低製造成本。According to the illuminating device, the illuminating device includes a illuminating diode chip and a driving unit for supplying the electric energy required for the illuminating diode chip. At present, the specifications of the LED chips on the market are numerous. For the LEDs with the same power, the combination of the working voltage and the operating current is various. Taking the 28W LED chip as an example, the working voltage is The combination with the operating current is 80V/350mA, 56V/500mA, 40V/700mA, etc. Therefore, in order to drive such a combination of light-emitting diode chips, the current method is to develop a light-emitting diode wafer for each type. Light-emitting diode wafer drive unit. However, for lighting device manufacturers of light-emitting diodes, each type of power LED chip needs to manufacture several kinds of driving units, which not only increases the pressure of the driving unit inventory, but also cannot be priced, resulting in manufacturing cost. Stay high. If a driving unit suitable for a combination of different operating voltages and operating currents can be developed, the pressure on the inventory of the LED driving unit of the light-emitting diode can be reduced, and the manufacturing cost can be effectively reduced.
有鑑於此，本創作之主要目的在於提供一種定功率之發光二極體照明裝置，可適用於同一功率但不同工作電壓與工作電流組合 之發光二極體晶片，並控制供輸至發光二極體晶片的功率維持於一預設功率之範圍。In view of this, the main purpose of this creation is to provide a constant power LED lighting device that can be applied to the same power but different working voltage and working current combination. The LED is printed and the power supplied to the LED chip is maintained within a predetermined power range.
緣以達成上述目的，本創作所提供之定功率之發光二極體照明裝置，係電性連接一電源，包含有一發光二極體晶片、一驅動單元、一電壓偵測單元與一回授控制單元。其中，該驅動單元電性連接該電源與該發光二極體晶片，用以接收該電源的電能並輸出一工作電壓與一工作電流予該發光二極體晶片；該電壓偵測單元電性連接該驅動單元，用以偵測該工作電壓之電壓值；該回授控制單元電性連接該電壓偵測單元及該驅動單元，該回授控制單元預設有至少三個參考電壓值，相鄰兩參考電壓值之間形成一電壓區段，各該電壓區段對應有一斜率參數，該回授控制單元依據該電壓偵測單元所測得的工作電壓之電壓值及該工作電壓之電壓值所屬之電壓區段的斜率參數，輸出一電流控制訊號至該驅動單元以控制輸出予該發光二極體晶片的工作電流之電流值，其中，該工作電流之電流值與該工作電壓之電壓值的乘積介於一預設功率的範圍內。In order to achieve the above objective, the light-emitting diode lighting device provided by the present invention is electrically connected to a power source, and includes a light-emitting diode chip, a driving unit, a voltage detecting unit and a feedback control. unit. The driving unit is electrically connected to the power source and the LED chip for receiving power of the power source and outputting an operating voltage and an operating current to the LED chip; the voltage detecting unit is electrically connected The driving unit is configured to detect a voltage value of the working voltage; the feedback control unit is electrically connected to the voltage detecting unit and the driving unit, and the feedback control unit is pre-configured with at least three reference voltage values adjacent to each other. Forming a voltage section between the two reference voltage values, each voltage section corresponding to a slope parameter, the feedback control unit according to the voltage value of the working voltage measured by the voltage detecting unit and the voltage value of the working voltage a slope parameter of the voltage section, outputting a current control signal to the driving unit to control a current value of an operating current outputted to the LED chip, wherein a current value of the operating current and a voltage value of the operating voltage The product is within a range of preset power.
藉此，透過該定功率之發光二極體照明裝置，可適用於具有相同功率但不同工作電壓及工作電流之發光二極體晶片，並維持供輸至發光二極體晶片的功率於預設功率之範圍內。有效改善習用的發光二極體之照明裝置只能適用單一工作電壓及工作電流之發光二極體晶片之不便。Therefore, the LED device with the constant power can be applied to the LED chip having the same power but different working voltages and operating currents, and the power supplied to the LED chip is preset. Within the power range. The illumination device for effectively improving the conventional light-emitting diode can only be applied to the inconvenience of the LED of a single working voltage and working current.
10‧‧‧電源10‧‧‧Power supply
20‧‧‧發光二極體晶片20‧‧‧Light Diode Wafer
30‧‧‧驅動單元30‧‧‧Drive unit
40‧‧‧定功率調整模組40‧‧‧Fixed power adjustment module
42‧‧‧電壓偵測單元42‧‧‧Voltage detection unit
44‧‧‧電流偵測單元44‧‧‧current detection unit
46‧‧‧回授控制單元46‧‧‧Return control unit
462‧‧‧比較器462‧‧‧ comparator
464‧‧‧訊號產生器464‧‧‧Signal Generator
V1、V2、V3、V4‧‧‧參考電壓值V1, V2, V3, V4‧‧‧ reference voltage values
Vmax‧‧‧上限電壓值Vmax‧‧‧ upper limit voltage value
Imax‧‧‧上限電流值Imax‧‧‧ upper limit current value
S‧‧‧電壓區段S‧‧‧Voltage section
C‧‧‧曲線C‧‧‧ Curve
圖1為本創作較佳實施例定功率之發光二極體照明裝置方塊圖；圖2為本創作較佳實施例之工作電壓與工作電流關係曲線圖；以及圖3為本創作定功率之發光二極體照明裝置的控制方法流程圖。1 is a block diagram of a light-emitting diode lighting device of a preferred embodiment of the present invention; FIG. 2 is a graph showing a relationship between a working voltage and an operating current according to a preferred embodiment of the present invention; and FIG. Flow chart of control method of diode lighting device.
為能更清楚地說明本創作，茲舉下列實施例並配合圖示詳細說明如后。圖1所示者為本創作一較佳實施例之定功率之發光二極體照明裝置，係電性連接一電源10，包含有一發光二極體晶片20、一驅動單元30與一定功率調整模組40。其中：該驅動單元30係電性連接該電源10與該發光二極體晶片20，用以接收該電源10的電能並輸出一工作電壓與一工作電流予該發光二極體晶片20；該驅動單元30係可受控制地改變該工作電壓之電壓值與該工作電流之電流值。在實務上，該驅動單元30可為採用PWM、半橋式、Buck、Boost等型式的電路為基礎進行設計。In order to explain the present invention more clearly, the following embodiments are described in detail with reference to the drawings. 1 is a light-emitting diode lighting device of a preferred embodiment of the present invention, electrically connected to a power source 10, including a light-emitting diode chip 20, a driving unit 30 and a certain power adjustment mode. Group 40. The driving unit 30 is electrically connected to the power source 10 and the LED chip 20 for receiving the power of the power source 10 and outputting an operating voltage and an operating current to the LED chip 20; Unit 30 is controllably varying the voltage value of the operating voltage and the current value of the operating current. In practice, the drive unit 30 can be designed based on circuits of the PWM, half bridge, Buck, Boost, and the like.
該定功率調整模組40包括有一電壓偵測單元42、一電流偵測單元44與一回授控制單元46。其中：該電壓偵測單元42電性連接該驅動單元30，用以偵測該驅動單元30供輸予該發光二極體晶片20的工作電壓之電壓值。該電流偵測單元44電性連接該驅動單元30，用以偵測該驅動單元30供輸予該發光二極體晶片20的工作電流之電流值。The constant power adjustment module 40 includes a voltage detecting unit 42 , a current detecting unit 44 and a feedback control unit 46 . The voltage detecting unit 42 is electrically connected to the driving unit 30 for detecting the voltage value of the driving voltage of the driving unit 30 for the operating voltage of the LED chip 20. The current detecting unit 44 is electrically connected to the driving unit 30 for detecting the current value of the operating current supplied by the driving unit 30 to the LED chip 20 .
該回授控制單元46包含有相電性連接的一比較器462與一訊號產生器464，該比較器462電性連接該電壓偵測單元42，該訊號產生器464電性連接該驅動單元30。請配合圖2所示，在本實施例中，該比較器462預設有四個不同的參考電壓值V1、V2、V3、V4，各該參考電壓值皆對應有一工作電流之電流值。在相鄰兩參考電壓值之間形成一電壓區段S，而該三個電壓區段S所連接形成的三條直線係接近理想的工作電壓-工作電流之關係曲線C，前述之理想的工作電壓-工作電流之乘積即為一預設功率。茲定義該參考電壓值V1(參考電壓值中之最大者)即為一上限電壓值Vmax；而該參考電壓值V4(參考電壓值中之最小者)所對應的工作電流之電流值為一上限電流值Imax。各該電壓區段S的直線具有一斜率，該些電壓區段S的斜率之絕對值係依該些參考電壓值V1、V2、V3、V4由大到小之順序依序減小，亦即參考電壓值V1-參考電壓值V2之電壓區段S的斜率之絕對值為最大，而 參考電壓值V3-參考電壓值V4之電壓區段S的斜率之絕對值為最小。各該斜率則對應有一斜率參數，該些斜率參數係預設於該比較器462中；而該比較器462係可對應各該斜率參數輸出一相對應的斜率訊號。The feedback control unit 46 includes a comparator 462 and a signal generator 464 that are electrically connected to each other. The comparator 462 is electrically connected to the voltage detecting unit 42. The signal generator 464 is electrically connected to the driving unit 30. . As shown in FIG. 2, in the embodiment, the comparator 462 is pre-configured with four different reference voltage values V1, V2, V3, and V4, and each of the reference voltage values corresponds to a current value of an operating current. A voltage section S is formed between adjacent two reference voltage values, and the three straight lines formed by the three voltage sections S are close to an ideal working voltage-operating current relationship C, the ideal working voltage - The product of the operating current is a preset power. The reference voltage value V1 (the largest of the reference voltage values) is defined as an upper limit voltage value Vmax; and the current value of the operating current corresponding to the reference voltage value V4 (the smallest of the reference voltage values) is an upper limit. Current value Imax. The straight line of each of the voltage segments S has a slope, and the absolute values of the slopes of the voltage segments S are sequentially decreased according to the order of the reference voltage values V1, V2, V3, and V4, that is, The absolute value of the slope of the voltage section S of the reference voltage value V1 - the reference voltage value V2 is the largest, and The absolute value of the slope of the voltage section S of the reference voltage value V3 - the reference voltage value V4 is the smallest. Each of the slopes has a slope parameter, and the slope parameters are preset in the comparator 462. The comparator 462 can output a corresponding slope signal corresponding to each of the slope parameters.
該訊號產生器464用以接收該斜率訊號，並將該斜率訊號與該工作電壓之電壓值經運算後輸出一電流控制訊號至該驅動單元30，該驅動單元30接收該電流控制訊號後，依據該電流控制訊號相應地改變輸出予該發光二極體晶片20的工作電流之電流值。The signal generator 464 is configured to receive the slope signal, and calculate the voltage value of the slope signal and the operating voltage to output a current control signal to the driving unit 30. After receiving the current control signal, the driving unit 30 is configured according to the The current control signal correspondingly changes the current value of the operating current output to the LED chip 20.
此外，該比較器462更可輸出一電壓限制訊號及一電流限制訊號至該訊號產生器464，該訊號產生器464接收該電流限制訊後則控制該驅動單元30以限制該工作電壓之電壓值或該工作電流之電流值，避免輸出之工作電壓或工作電流異常，而造成發光二極體晶片20損壞。In addition, the comparator 462 can further output a voltage limiting signal and a current limiting signal to the signal generator 464. After receiving the current limiting signal, the signal generator 464 controls the driving unit 30 to limit the voltage value of the working voltage. Or the current value of the working current, to avoid abnormality of the output working voltage or working current, and cause damage of the LED chip 20.
藉此，前述定功率之發光二極體照明裝置即可以圖3所示下列步驟進行控制：Thereby, the above-mentioned constant-power LED illuminating device can be controlled by the following steps as shown in FIG. 3:
A.連接具有相同於該預設功率之發光二極體晶片20至該驅動單元30。A. Connect the light emitting diode chip 20 having the same power as the preset power to the driving unit 30.
B.透過該電壓偵測單元42偵測該工作電壓之電壓值，以及透過該電流偵測單元44偵測該工作電流之電流值。B. The voltage detecting unit 42 detects the voltage value of the working voltage, and detects the current value of the working current through the current detecting unit 44.
C.該比較器462判斷該工作電壓之電壓值是否高於該上限電壓值Vmax： 若是，則代表該工作電壓異常，此時該比較器462發送該電壓限制訊號至該訊號產生器464，該訊號產生器464收到該電壓限制訊號後輸出一最高電壓控制訊號至該驅動單元30以限制輸出至該發光二極體晶片20的工作電壓之電壓值等於該參考電壓值V1，並回到步驟B。C. The comparator 462 determines whether the voltage value of the operating voltage is higher than the upper limit voltage value Vmax: If yes, the operating voltage is abnormal. At this time, the comparator 462 sends the voltage limiting signal to the signal generator 464. The signal generator 464 receives the voltage limiting signal and outputs a highest voltage control signal to the driving unit 30. The voltage value of the operating voltage output to the LED chip 20 is limited to be equal to the reference voltage value V1, and returns to step B.
若否，則進行步驟D。If no, proceed to step D.
D.該比較器462判斷該工作電流之電流值是否高於該上限電流值Imax：若是，則代表工作電流異常，此時該比較器462發送該電流限制訊號至該訊號產生器464，該訊號產生器464收到該電流限制訊號後輸出一最高電流控制訊號至該驅動單元30以限制輸出至該發光二極體晶片20的工作電流之電壓流等於該上限電流值Imax，並回到步驟B。D. The comparator 462 determines whether the current value of the operating current is higher than the upper limit current value Imax: if yes, the operating current is abnormal, and the comparator 462 sends the current limiting signal to the signal generator 464, the signal The generator 464 receives the current limiting signal and outputs a highest current control signal to the driving unit 30 to limit the voltage flow of the operating current output to the LED chip 20 to be equal to the upper limit current value Imax, and returns to step B. .
若否，則進行步驟E。If no, proceed to step E.
E.該比較器462依據該電壓偵測單元42所測得的工作電壓之電壓值判斷該工作電壓之電壓值所屬之電壓區段S，並取得對應該工作電壓之電壓值所屬之電壓區段S之斜率參數，據以輸出相對應的斜率訊號。該訊號產生器464依據該工作電壓之電壓值以及所接收的該斜率訊號，輸出相應的該電流控制訊號至該驅動單元30，使該驅動單元30輸出至該發光二極體晶片20的工作電流之電流值與該工作電壓之電壓值的乘積介於該預設功率的範圍內。亦即，利用該工作電 壓之電壓值及所屬電壓區段S之直線的斜率運算得到該預設功率所需的工作電流之電流值。較佳地，該預設功率之範圍為該預設功率的90%至110%(即該預設功率±10%之間)，舉例而言，該預設功率為28W，則該工作電流之電流值與該工作電壓之電壓值的乘積為介於25.2W至30.8W之間。E. The comparator 462 determines the voltage segment S to which the voltage value of the working voltage belongs according to the voltage value of the operating voltage measured by the voltage detecting unit 42, and obtains the voltage segment to which the voltage value corresponding to the operating voltage belongs. The slope parameter of S is used to output the corresponding slope signal. The signal generator 464 outputs a corresponding current control signal to the driving unit 30 according to the voltage value of the working voltage and the received slope signal, so that the driving unit 30 outputs the operating current to the LED chip 20 . The product of the current value and the voltage value of the operating voltage is within the range of the preset power. That is, using the working electricity The slope of the voltage value and the slope of the line of the associated voltage section S calculates the current value of the operating current required for the preset power. Preferably, the preset power ranges from 90% to 110% of the preset power (ie, between the preset powers and ±10%). For example, the preset power is 28W, and the working current is The product of the current value and the voltage value of the operating voltage is between 25.2W and 30.8W.
F、重覆步驟B至步驟E，即可持續維持供輸至該發光二極體晶片20的功率於該預設功率之範圍。F. Repeat step B to step E to continuously maintain the power supplied to the LED chip 20 within the range of the preset power.
在上述中，係利用複數個電壓區段S與工作電流之關係構成接近理想的工作電壓-工作電流曲線C，即使更換不同工作電壓的發光二極體晶片20，該定功率之發光二極體照明裝置即可相應地改變供輸至發光二極體晶片20的工作電流，使供輸至發光二極體晶片20的功率維持在預設功率的範圍內。而當預設的電壓區段S越多，所輸出的該預設功率的範圍則越接近理想值。In the above, the relationship between the plurality of voltage segments S and the operating current is used to form an ideal working voltage-operating current curve C. Even if the LEDs 20 of different operating voltages are replaced, the constant-emitting LEDs are used. The illuminating device can change the operating current supplied to the illuminating diode chip 20 accordingly, so that the power supplied to the illuminating diode chip 20 is maintained within a preset power range. When the preset voltage segment S is more, the range of the preset power output is closer to the ideal value.
透過本創作定功率之發光二極體照明裝置，可適用於具有相同功率但不同工作電壓及工作電流之發光二極體晶片，不限於單一工作電壓及工作電流之發光二極體晶片。有效改善習用的發光二極體之照明裝置只能適用單一工作電壓及工作電流之發光二極體晶片之不便。以上所述僅為本創作較佳可行之實施例而已，並非本創作之所有可實施態樣。舉凡應用本創作說明書及申請專利範圍所為之等效結構之變化，理應包含在本創作之專利範圍內。The light-emitting diode lighting device with the power of the present invention can be applied to a light-emitting diode chip having the same power but different working voltages and working currents, and is not limited to a single-working light source and a working current light-emitting diode chip. The illumination device for effectively improving the conventional light-emitting diode can only be applied to the inconvenience of the LED of a single working voltage and working current. The above description is only for the preferred embodiment of the present invention, and is not all embodiments of the present invention. Changes in the equivalent structure of the application specification and the scope of the patent application are intended to be included in the scope of the patent.
10‧‧‧電源10‧‧‧Power supply
20‧‧‧發光二極體晶片20‧‧‧Light Diode Wafer
30‧‧‧驅動單元30‧‧‧Drive unit
40‧‧‧定功率調整模組40‧‧‧Fixed power adjustment module
42‧‧‧電壓偵測單元42‧‧‧Voltage detection unit
44‧‧‧電流偵測單元44‧‧‧current detection unit
46‧‧‧回授控制單元46‧‧‧Return control unit
462‧‧‧比較器462‧‧‧ comparator
464‧‧‧訊號產生器464‧‧‧Signal Generator
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102203044U TWM457824U (en) | 2013-02-08 | 2013-02-08 | Constant-power LED lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102203044U TWM457824U (en) | 2013-02-08 | 2013-02-08 | Constant-power LED lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM457824U true TWM457824U (en) | 2013-07-21 |
Family
ID=49228328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102203044U TWM457824U (en) | 2013-02-08 | 2013-02-08 | Constant-power LED lighting device |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWM457824U (en) |
-
2013
- 2013-02-08 TW TW102203044U patent/TWM457824U/en not_active IP Right Cessation
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6198733B2 (en) | System and method for performing dimming based on main power signal of solid state lighting module | |
| JP5537286B2 (en) | LED lighting device | |
| EP2630843B1 (en) | Led circuit arrangement | |
| US9807831B2 (en) | Self-adjusting lighting driver for driving lighting sources and lighting unit including self-adjusting lighting driver | |
| US9131579B2 (en) | Driving apparatus for LED chips of different specifications | |
| TWI581660B (en) | Light-emitting diode device | |
| CN107787606B (en) | LED lighting device | |
| CN103987147B (en) | Determine the light emitting diode illuminating apparatus of power and determine the control method of power output | |
| US20140225525A1 (en) | Constant-power power supply apparatus and method of supplying constant-power power | |
| US20140070713A1 (en) | Led lighting device | |
| US9107254B2 (en) | Method and apparatus for LED lighting | |
| CN203206526U (en) | Light-emitting diode (LED) lighting device with certain power | |
| KR101753193B1 (en) | Current control method for LED lighting fixtures through PWM control of LED modules connected in parallel | |
| JP2011151504A (en) | Load drive controller | |
| TWI538556B (en) | Application of the same power different voltage and current specifications of the light-emitting diode chip drive method | |
| TWM458051U (en) | Constant power supply device | |
| JP6489347B2 (en) | Light emitting element lighting device, light emitting module, and lighting device | |
| TWI522004B (en) | Variable power of the light-emitting diode lighting device and set the power output control method | |
| TWM457824U (en) | Constant-power LED lighting device | |
| TWI523570B (en) | Multi - specification hybrid light - emitting diode driver method | |
| TWI547200B (en) | The driving method of light emitting diode wafers | |
| JP6106900B2 (en) | Constant power factor power supply and control method of constant power factor output | |
| TWI400004B (en) | Method and device for driving light source | |
| JP2011076556A (en) | Load drive control method | |
| KR20090068045A (en) | Led driving apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4K | Annulment or lapse of a utility model due to non-payment of fees |