TW201528871A - Light emitting diode driving apparatus with variable output current and method for the same - Google Patents
Light emitting diode driving apparatus with variable output current and method for the same Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
本發明係有關於一種發光二極體驅動裝置及其輸出電流方法，特別是一種可改變輸出電流之發光二極體驅動裝置及其方法。The invention relates to a light-emitting diode driving device and an output current method thereof, in particular to a light-emitting diode driving device capable of changing an output current and a method thereof.
相較於白熾光來源，發光二極體具有許多的優點，包含了比較低的能源損耗、比較長的壽命、改善的物理耐用性、比較小的尺寸及比較快的切換速度；因此，發光二極體已經被廣泛地運用以取代日光燈管或鎢絲燈。Compared with incandescent light sources, light-emitting diodes have many advantages, including relatively low energy loss, long life, improved physical durability, relatively small size and relatively fast switching speed; therefore, two light-emitting Polar bodies have been widely used to replace fluorescent tubes or tungsten lamps.
發光二極體驅動裝置係用以驅動發光二極體；然而，發光二極體驅動裝置的缺點為不可容易地改變發光二極體驅動裝置的輸出電流；一般來說，發光二極體驅動裝置的硬體需要被改變以改變發光二極體驅動裝置的輸出電流。The LED driving device is used to drive the LED; however, the LED driver has the disadvantage that the output current of the LED driver cannot be easily changed; in general, the LED driver The hardware needs to be changed to change the output current of the LED driver.
為改善上述習知技術之缺點，本發明之目的在於提供一種可改變輸出電流之發光二極體驅動裝置。In order to improve the above disadvantages of the prior art, it is an object of the present invention to provide a light emitting diode driving device capable of changing an output current.
為改善上述習知技術之缺點，本發明之又一目的在於提供一種可改變輸出電流之發光二極體驅動裝置。In order to improve the above disadvantages of the prior art, it is still another object of the present invention to provide a light emitting diode driving device capable of changing an output current.
為改善上述習知技術之缺點，本發明之再一目的在於提供一種改變發光二極體驅動裝置輸出電流之方法。In order to improve the above disadvantages of the prior art, it is still another object of the present invention to provide a method of changing the output current of a light-emitting diode driving device.
為達成本發明之上述目的，本發明之可改變輸出電流之發光二極體驅動裝置係應用於至少一發光二極體及一使用者端設定單元，該可改變輸出電流之發光二極體驅動裝置包含：一發光二極體驅動單元，該發光二極體驅動單元電性連接至該發光二極體；一脈波寬度調變產生控制單元，該脈波寬度調變產生控制單元電性連接至該發光二極體驅動單元及該使用者端設定單元；及一調光單元，該調光單元電性連接至該脈波寬度調變產生控制單元。其中該使用者端設定單元傳送一使用者端設定信號至該脈波寬度調變產生控制單元；該調光單元傳送一調光信號至該脈波寬度調變產生控制單元；該脈波寬度調變產生控制單元將該使用者端設定信號之數值乘上該調光信號之數值，以得到一脈波寬度調變輸出電流控制信號；該脈波寬度調變產生控制單元傳送該脈波寬度調變輸出電流控制信號至該發光二極體驅動單元；該發光二極體驅動單元將該脈波寬度調變輸出電流控制信號之數值乘上該發光二極體驅動單元之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流；該發光二極體驅動單元以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。In order to achieve the above object of the present invention, the light-emitting diode driving device capable of changing the output current of the present invention is applied to at least one light-emitting diode and a user terminal setting unit, and the light-emitting diode driving capable of changing the output current is driven. The device comprises: a light emitting diode driving unit, the light emitting diode driving unit is electrically connected to the light emitting diode; a pulse width modulation generating control unit, the pulse width modulation generating control unit is electrically connected The light emitting diode driving unit and the user terminal setting unit; and a light adjusting unit electrically connected to the pulse width modulation generation control unit. The user terminal setting unit transmits a user terminal setting signal to the pulse width modulation generation control unit; the dimming unit transmits a dimming signal to the pulse width modulation generation control unit; the pulse width modulation The variable generation control unit multiplies the value of the user end setting signal by the value of the dimming signal to obtain a pulse width modulation output current control signal; the pulse width modulation generation control unit transmits the pulse width modulation Changing the output current control signal to the LED driving unit; the LED driving unit multiplies the value of the pulse width modulation output current control signal by the maximum output current of one of the LED driving units And obtaining a light-emitting diode pulse width modulation driving current; the light-emitting diode driving unit drives the light-emitting diode with the light-emitting diode pulse width modulation driving current.
為達成本發明之上述又一目的，本發明之可改變輸出電流之發光二極體驅動裝置係應用於至少一發光二極體，該可改變輸出電流之發光二極體驅動裝置包含：一使用者端設定單元；一發光二極體驅動單元，該發光二極體驅動單元電性連接至該發光二極體；一脈波寬度調變產生控制單元，該脈波寬度調變產生控制單元電性連接至該發光二極體驅動單元及該使用者端設定單元；及一調光單元，該調光單元電性連接至該脈波寬度調變產生控制單元。其中該使用者端設定單元傳送一使用者端設定信號至該脈波寬度調變產生控制單元；該調光單元傳送一調光信號至該脈波寬度調變產生控制單元；該脈波寬度調變產生控制單元將該使用者端設定信號之數值乘上該調光信號之數值，以得到一脈波寬度調變輸出電流控制信號；該脈波寬度調變產生控制單元傳送該脈波寬度調變輸出電流控制信號至該發光二極體驅動單元；該發光二極體驅動單元將該脈波寬度調變輸出電流控制信號之數值乘上該發光二極體驅動單元之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流；該發光二極體驅動單元以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。In order to achieve the above-mentioned other object of the present invention, the light-emitting diode driving device capable of changing the output current of the present invention is applied to at least one light-emitting diode, and the light-emitting diode driving device capable of changing the output current includes: a light-emitting diode driving unit electrically connected to the light-emitting diode; a pulse width modulation generating control unit, the pulse width modulation generating control unit Connected to the LED driving unit and the user terminal setting unit; and a dimming unit electrically connected to the pulse width modulation generation control unit. The user terminal setting unit transmits a user terminal setting signal to the pulse width modulation generation control unit; the dimming unit transmits a dimming signal to the pulse width modulation generation control unit; the pulse width modulation The variable generation control unit multiplies the value of the user end setting signal by the value of the dimming signal to obtain a pulse width modulation output current control signal; the pulse width modulation generation control unit transmits the pulse width modulation Changing the output current control signal to the LED driving unit; the LED driving unit multiplies the value of the pulse width modulation output current control signal by the maximum output current of one of the LED driving units And obtaining a light-emitting diode pulse width modulation driving current; the light-emitting diode driving unit drives the light-emitting diode with the light-emitting diode pulse width modulation driving current.
為達成本發明之上述再一目的，本發明之改變發光二極體驅動裝置輸出電流之方法係應用於一發光二極體驅動裝置及至少一發光二極體，該發光二極體驅動裝置包含一使用者端設定單元、一發光二極體驅動單元、一脈波寬度調變產生控制單元及一調光單元，該改變發光二極體驅動裝置輸出電流之方法包含：該使用者端設定單元傳送一使用者端設定信號至該脈波寬度調變產生控制單元；該調光單元傳送一調光信號至該脈波寬度調變產生控制單元；該脈波寬度調變產生控制單元將該使用者端設定信號之數值乘上該調光信號之數值，以得到一脈波寬度調變輸出電流控制信號；該脈波寬度調變產生控制單元傳送該脈波寬度調變輸出電流控制信號至該發光二極體驅動單元；該發光二極體驅動單元將該脈波寬度調變輸出電流控制信號之數值乘上該發光二極體驅動單元之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流；及該發光二極體驅動單元以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。In order to achieve the above-mentioned other object of the present invention, the method for changing the output current of the LED driving device of the present invention is applied to a light emitting diode driving device and at least one light emitting diode, and the light emitting diode driving device comprises a user terminal setting unit, a light emitting diode driving unit, a pulse width modulation generating control unit and a light adjusting unit, wherein the method for changing the output current of the light emitting diode driving device comprises: the user terminal setting unit Transmitting a user terminal setting signal to the pulse width modulation generation control unit; the dimming unit transmitting a dimming signal to the pulse width modulation generation control unit; the pulse width modulation generation control unit uses the pulse width modulation The value of the terminal setting signal is multiplied by the value of the dimming signal to obtain a pulse width modulation output current control signal; the pulse width modulation generation control unit transmits the pulse width modulation output current control signal to the a light emitting diode driving unit; the light emitting diode driving unit multiplies the value of the pulse width modulation output current control signal by the light emitting diode drive a maximum output current value of the unit to obtain a light-emitting diode pulse width modulation driving current; and the light-emitting diode driving unit drives the light-emitting diode with the light-emitting diode pulse width modulation driving current body.
本發明之功效在於可容易地改變發光二極體驅動裝置的輸出電流。The effect of the present invention is that the output current of the light-emitting diode driving device can be easily changed.
10‧‧‧可改變輸出電流之發光二極體驅動裝置10‧‧‧Lighting diode driving device capable of changing output current
20‧‧‧發光二極體20‧‧‧Lighting diode
30‧‧‧使用者端設定單元30‧‧‧User terminal setting unit
32‧‧‧使用者端設定信號32‧‧‧User setting signal
102‧‧‧發光二極體驅動單元102‧‧‧Lighting diode drive unit
104‧‧‧脈波寬度調變產生控制單元104‧‧‧ Pulse width modulation generation control unit
106‧‧‧調光單元106‧‧‧ dimming unit
108‧‧‧調光信號108‧‧‧ dimming signal
110‧‧‧脈波寬度調變輸出電流控制信號110‧‧‧ Pulse width modulation output current control signal
112‧‧‧發光二極體脈波寬度調變驅動電流112‧‧‧Lighting diode pulse width modulation drive current
1022‧‧‧脈波寬度調變驅動電路1022‧‧‧ Pulse width modulation drive circuit
S02～12‧‧‧步驟S02～12‧‧‧Steps
第一圖為本發明之可改變輸出電流之發光二極體驅動裝置之第一實施例方塊圖。The first figure is a block diagram of a first embodiment of a light-emitting diode driving device capable of changing an output current according to the present invention.
第二圖為本發明之可改變輸出電流之發光二極體驅動裝置之第二實施例方塊圖。The second figure is a block diagram of a second embodiment of the LED driving device of the present invention which can change the output current.
第三圖為本發明之改變發光二極體驅動裝置輸出電流之方法之流程圖。The third figure is a flow chart of the method for changing the output current of the LED driving device of the present invention.
請參考第一圖，其係為本發明之可改變輸出電流之發光二極體驅動裝置之第一實施例方塊圖。一可改變輸出電流之發光二極體驅動裝置10係應用於至少一發光二極體20及一使用者端設定單元30；該可改變輸出電流之發光二極體驅動裝置10包含一發光二極體驅動單元102、一脈波寬度調變產生控制單元104及一調光單元106。Please refer to the first figure, which is a block diagram of a first embodiment of a light-emitting diode driving device capable of changing an output current according to the present invention. A light-emitting diode driving device 10 capable of changing an output current is applied to at least one light-emitting diode 20 and a user terminal setting unit 30; the light-emitting diode driving device 10 capable of changing the output current includes a light-emitting diode The body drive unit 102, a pulse width modulation generation control unit 104, and a dimming unit 106.
該發光二極體驅動單元102電性連接至該發光二極體20；該脈波寬度調變產生控制單元104電性連接至該發光二極體驅動單元102及該使用者端設定單元30；該調光單元106電性連接至該脈波寬度調變產生控制單元104。The illuminating diode driving unit 102 is electrically connected to the illuminating diode 20; the pulse width modulation generating control unit 104 is electrically connected to the illuminating diode driving unit 102 and the user end setting unit 30; The dimming unit 106 is electrically connected to the pulse width modulation generation control unit 104.
該使用者端設定單元30傳送一使用者端設定信號32至該脈波寬度調變產生控制單元104；該調光單元106傳送一調光信號108至該脈波寬度調變產生控制單元104；該脈波寬度調變產生控制單元104將該使用者端設定信號32之數值乘上該調光信號108之數值，以得到一脈波寬度調變輸出電流控制信號110。The user terminal setting unit 30 transmits a user terminal setting signal 32 to the pulse width modulation generation control unit 104; the dimming unit 106 transmits a dimming signal 108 to the pulse width modulation generation control unit 104; The pulse width modulation generation control unit 104 multiplies the value of the user end setting signal 32 by the value of the dimming signal 108 to obtain a pulse width modulated output current control signal 110.
例如，該使用者端設定信號32之數值為0.9；該調光信號108之數值為0.9；因此，該脈波寬度調變輸出電流控制信號110之數值為0.81。該脈波寬度調變輸出電流控制信號110係以脈波寬度調變形式被產生；例如，導通時間為81%，不導通時間為19%（即，duty cycle為81%）。For example, the value of the user terminal setting signal 32 is 0.9; the value of the dimming signal 108 is 0.9; therefore, the value of the pulse width modulation output current control signal 110 is 0.81. The pulse width modulated output current control signal 110 is generated in a pulse width modulation; for example, the on time is 81% and the non-conduction time is 19% (ie, the duty cycle is 81%).
該脈波寬度調變產生控制單元104傳送該脈波寬度調變輸出電流控制信號110至該發光二極體驅動單元102；該發光二極體驅動單元102將該脈波寬度調變輸出電流控制信號110之數值乘上該發光二極體驅動單元102之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流112；該發光二極體驅動單元102以該發光二極體脈波寬度調變驅動電流112驅動該發光二極體20。The pulse width modulation generation control unit 104 transmits the pulse width modulation output current control signal 110 to the LED driving unit 102; the LED driving unit 102 controls the pulse width modulation output current The value of the signal 110 is multiplied by the maximum output current of the one of the LED driving units 102 to obtain a light-emitting diode pulse width modulation driving current 112; the LED driving unit 102 uses the LED The polar body pulse width modulation drive current 112 drives the light emitting diode 20.
例如，該脈波寬度調變輸出電流控制信號110之數值為0.81；該發光二極體驅動單元102之該最大輸出電流之數值為2安培；因此，該發光二極體脈波寬度調變驅動電流112為1.62安培。For example, the value of the pulse width modulation output current control signal 110 is 0.81; the maximum output current of the LED driving unit 102 is 2 amps; therefore, the LED width modulation drive of the LED is driven. Current 112 is 1.62 amps.
再者，該發光二極體驅動單元102包含一脈波寬度調變驅動電路1022；該脈波寬度調變驅動電路1022以該發光二極體脈波寬度調變驅動電流112驅動該發光二極體20。該脈波寬度調變產生控制單元104可為例如但不限定為一乘法器或一微處理器。Furthermore, the LED driving unit 102 includes a pulse width modulation driving circuit 1022. The pulse width modulation driving circuit 1022 drives the LED with the LED width modulation driving current 112. Body 20. The pulse width modulation generation control unit 104 can be, for example but not limited to, a multiplier or a microprocessor.
再者，該脈波寬度調變輸出電流控制信號110與該發光二極體脈波寬度調變驅動電流112不相同。該發光二極體脈波寬度調變驅動電流112係用以驅動該發光二極體20，該發光二極體脈波寬度調變驅動電流112的頻率通常在60KHz～70KHz（高頻）。該脈波寬度調變輸出電流控制信號110係用以控制該發光二極體驅動單元102之該最大輸出電流之輸出百分比，該脈波寬度調變輸出電流控制信號110的頻率通常在100Hz～10KHz。Moreover, the pulse width modulation output current control signal 110 is different from the light emitting diode pulse width modulation drive current 112. The light-emitting diode pulse width modulation drive current 112 is used to drive the light-emitting diode 20, and the frequency of the light-emitting diode pulse width modulation drive current 112 is usually 60 kHz to 70 kHz (high frequency). The pulse width modulation output current control signal 110 is used to control the output percentage of the maximum output current of the LED driving unit 102. The frequency of the pulse width modulation output current control signal 110 is usually between 100 Hz and 10 KHz. .
請參考第二圖，其係為本發明之可改變輸出電流之發光二極體驅動裝置之第二實施例方塊圖。一可改變輸出電流之發光二極體驅動裝置10係應用於至少一發光二極體20；該可改變輸出電流之發光二極體驅動裝置10包含一使用者端設定單元30、一發光二極體驅動單元102、一脈波寬度調變產生控制單元104及一調光單元106。Please refer to the second figure, which is a block diagram of a second embodiment of the LED driving device capable of changing the output current of the present invention. The LED device 10 for changing the output current is applied to at least one of the LEDs 20; the LED device 10 for changing the output current includes a user terminal setting unit 30 and a light emitting diode The body drive unit 102, a pulse width modulation generation control unit 104, and a dimming unit 106.
該發光二極體驅動單元102電性連接至該發光二極體20；該脈波寬度調變產生控制單元104電性連接至該發光二極體驅動單元102及該使用者端設定單元30；該調光單元106電性連接至該脈波寬度調變產生控制單元104。The illuminating diode driving unit 102 is electrically connected to the illuminating diode 20; the pulse width modulation generating control unit 104 is electrically connected to the illuminating diode driving unit 102 and the user end setting unit 30; The dimming unit 106 is electrically connected to the pulse width modulation generation control unit 104.
該使用者端設定單元30傳送一使用者端設定信號32至該脈波寬度調變產生控制單元104；該調光單元106傳送一調光信號108至該脈波寬度調變產生控制單元104；該脈波寬度調變產生控制單元104將該使用者端設定信號32之數值乘上該調光信號108之數值，以得到一脈波寬度調變輸出電流控制信號110。The user terminal setting unit 30 transmits a user terminal setting signal 32 to the pulse width modulation generation control unit 104; the dimming unit 106 transmits a dimming signal 108 to the pulse width modulation generation control unit 104; The pulse width modulation generation control unit 104 multiplies the value of the user end setting signal 32 by the value of the dimming signal 108 to obtain a pulse width modulated output current control signal 110.
例如，該使用者端設定信號32之數值為0.9；該調光信號108之數值為0.9；因此，該脈波寬度調變輸出電流控制信號110之數值為0.81。該脈波寬度調變輸出電流控制信號110係以脈波寬度調變形式被產生；例如，導通時間為81%，不導通時間為19%（即，duty cycle為81%）。For example, the value of the user terminal setting signal 32 is 0.9; the value of the dimming signal 108 is 0.9; therefore, the value of the pulse width modulation output current control signal 110 is 0.81. The pulse width modulated output current control signal 110 is generated in a pulse width modulation; for example, the on time is 81% and the non-conduction time is 19% (ie, the duty cycle is 81%).
該脈波寬度調變產生控制單元104傳送該脈波寬度調變輸出電流控制信號110至該發光二極體驅動單元102；該發光二極體驅動單元102將該脈波寬度調變輸出電流控制信號110之數值乘上該發光二極體驅動單元102之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流112；該發光二極體驅動單元102以該發光二極體脈波寬度調變驅動電流112驅動該發光二極體20。The pulse width modulation generation control unit 104 transmits the pulse width modulation output current control signal 110 to the LED driving unit 102; the LED driving unit 102 controls the pulse width modulation output current The value of the signal 110 is multiplied by the maximum output current of the one of the LED driving units 102 to obtain a light-emitting diode pulse width modulation driving current 112; the LED driving unit 102 uses the LED The polar body pulse width modulation drive current 112 drives the light emitting diode 20.
例如，該脈波寬度調變輸出電流控制信號110之數值為0.81；該發光二極體驅動單元102之該最大輸出電流之數值為2安培；因此，該發光二極體脈波寬度調變驅動電流112為1.62安培。For example, the value of the pulse width modulation output current control signal 110 is 0.81; the maximum output current of the LED driving unit 102 is 2 amps; therefore, the LED width modulation drive of the LED is driven. Current 112 is 1.62 amps.
再者，該發光二極體驅動單元102包含一脈波寬度調變驅動電路1022；該脈波寬度調變驅動電路1022以該發光二極體脈波寬度調變驅動電流112驅動該發光二極體20。該脈波寬度調變產生控制單元104可為例如但不限定為一乘法器或一微處理器。Furthermore, the LED driving unit 102 includes a pulse width modulation driving circuit 1022. The pulse width modulation driving circuit 1022 drives the LED with the LED width modulation driving current 112. Body 20. The pulse width modulation generation control unit 104 can be, for example but not limited to, a multiplier or a microprocessor.
再者，該脈波寬度調變輸出電流控制信號110與該發光二極體脈波寬度調變驅動電流112不相同。該發光二極體脈波寬度調變驅動電流112係用以驅動該發光二極體20，該發光二極體脈波寬度調變驅動電流112的頻率通常在60KHz～70KHz（高頻）。該脈波寬度調變輸出電流控制信號110係用以控制該發光二極體驅動單元102之該最大輸出電流之輸出百分比，該脈波寬度調變輸出電流控制信號110的頻率通常在100Hz～10KHz。Moreover, the pulse width modulation output current control signal 110 is different from the light emitting diode pulse width modulation drive current 112. The light-emitting diode pulse width modulation drive current 112 is used to drive the light-emitting diode 20, and the frequency of the light-emitting diode pulse width modulation drive current 112 is usually 60 kHz to 70 kHz (high frequency). The pulse width modulation output current control signal 110 is used to control the output percentage of the maximum output current of the LED driving unit 102. The frequency of the pulse width modulation output current control signal 110 is usually between 100 Hz and 10 KHz. .
請參考第三圖，其係為本發明之改變發光二極體驅動裝置輸出電流之方法之流程圖。本發明之改變發光二極體驅動裝置輸出電流之方法係應用於一發光二極體驅動裝置及至少一發光二極體；該發光二極體驅動裝置包含一使用者端設定單元、一發光二極體驅動單元、一脈波寬度調變產生控制單元及一調光單元。該改變發光二極體驅動裝置輸出電流之方法包含下列步驟：Please refer to the third figure, which is a flow chart of the method for changing the output current of the LED driving device of the present invention. The method for changing the output current of the LED driving device is applied to a light emitting diode driving device and at least one light emitting diode; the LED driving device comprises a user end setting unit and a light emitting diode The polar body driving unit, a pulse width modulation generating control unit and a dimming unit. The method for changing the output current of the LED driver comprises the following steps:
S02：該使用者端設定單元傳送一使用者端設定信號至該脈波寬度調變產生控制單元。S02: The user terminal setting unit transmits a user terminal setting signal to the pulse width modulation generation control unit.
S04：該調光單元傳送一調光信號至該脈波寬度調變產生控制單元。S04: The dimming unit transmits a dimming signal to the pulse width modulation generation control unit.
S06：該脈波寬度調變產生控制單元將該使用者端設定信號之數值乘上該調光信號之數值，以得到一脈波寬度調變輸出電流控制信號。S06: The pulse width modulation generation control unit multiplies the value of the user end setting signal by the value of the dimming signal to obtain a pulse width modulation output current control signal.
例如，該使用者端設定信號之數值為0.9；該調光信號之數值為0.9；因此，該脈波寬度調變輸出電流控制信號之數值為0.81。該脈波寬度調變輸出電流控制信號係以脈波寬度調變形式被產生；例如，導通時間為81%，不導通時間為19%（即，duty cycle為81%）。For example, the value of the user terminal setting signal is 0.9; the value of the dimming signal is 0.9; therefore, the value of the pulse width modulation output current control signal is 0.81. The pulse width modulated output current control signal is generated in a pulse width modulation; for example, an on time of 81% and a non-conduction time of 19% (ie, a duty cycle of 81%).
S08：該脈波寬度調變產生控制單元傳送該脈波寬度調變輸出電流控制信號至該發光二極體驅動單元。S08: The pulse width modulation generation control unit transmits the pulse width modulation output current control signal to the LED driving unit.
S10：該發光二極體驅動單元將該脈波寬度調變輸出電流控制信號之數值乘上該發光二極體驅動單元之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流。S10: the LED driving unit multiplies the value of the pulse width modulation output current control signal by the maximum output current of one of the LED driving units to obtain a light-emitting diode pulse width modulation. Variable drive current.
S12：該發光二極體驅動單元以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。S12: The LED driving unit drives the LED by the pulse width modulation driving current of the LED.
例如，該脈波寬度調變輸出電流控制信號之數值為0.81；該發光二極體驅動單元之該最大輸出電流之數值為2安培；因此，該發光二極體脈波寬度調變驅動電流為1.62安培。For example, the value of the pulse width modulation output current control signal is 0.81; the maximum output current of the LED driving unit is 2 amps; therefore, the illuminating pulse width modulation driving current is 1.62 amps.
再者，該發光二極體驅動單元包含一脈波寬度調變驅動電路；該脈波寬度調變驅動電路以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。該脈波寬度調變產生控制單元可為例如但不限定為一乘法器或一微處理器。Furthermore, the LED driving unit includes a pulse width modulation driving circuit; and the pulse width modulation driving circuit drives the LED by the LED width modulation driving current. The pulse width modulation generation control unit may be, for example but not limited to, a multiplier or a microprocessor.
再者，該脈波寬度調變輸出電流控制信號與該發光二極體脈波寬度調變驅動電流不相同。該發光二極體脈波寬度調變驅動電流係用以驅動該發光二極體，該發光二極體脈波寬度調變驅動電流的頻率通常在60KHz～70KHz（高頻）。該脈波寬度調變輸出電流控制信號係用以控制該發光二極體驅動單元之該最大輸出電流之輸出百分比，該脈波寬度調變輸出電流控制信號的頻率通常在100Hz～10KHz。Furthermore, the pulse width modulation output current control signal is different from the LED width modulation drive current of the LED. The LED pulse width modulation driving current is used to drive the LED, and the frequency of the LED width modulation driving current is usually 60 KHz to 70 KHz (high frequency). The pulse width modulation output current control signal is used to control the output percentage of the maximum output current of the LED driving unit, and the frequency of the pulse width modulation output current control signal is usually between 100 Hz and 10 KHz.
然以上所述者，僅為本發明之較佳實施例，當不能限定本發明實施之範圍，即凡依本發明申請專利範圍所作之均等變化與修飾等，皆應仍屬本發明之專利涵蓋範圍意圖保護之範疇。綜上所述，當知本發明已具有產業利用性、新穎性與進步性，又本發明之構造亦未曾見於同類產品及公開使用，完全符合發明專利申請要件，爰依專利法提出申請。However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still be covered by the patent of the present invention. The scope of the scope is intended to protect. In summary, it is known that the present invention has industrial applicability, novelty and advancement, and the structure of the present invention has not been seen in similar products and public use, and fully complies with the requirements of the invention patent application, and is filed according to the patent law.
10‧‧‧可改變輸出電流之發光二極體驅動裝置 10‧‧‧Lighting diode driving device capable of changing output current
20‧‧‧發光二極體 20‧‧‧Lighting diode
30‧‧‧使用者端設定單元 30‧‧‧User terminal setting unit
32‧‧‧使用者端設定信號 32‧‧‧User setting signal
102‧‧‧發光二極體驅動單元 102‧‧‧Lighting diode drive unit
104‧‧‧脈波寬度調變產生控制單元 104‧‧‧ Pulse width modulation generation control unit
106‧‧‧調光單元 106‧‧‧ dimming unit
108‧‧‧調光信號 108‧‧‧ dimming signal
110‧‧‧脈波寬度調變輸出電流控制信號 110‧‧‧ Pulse width modulation output current control signal
112‧‧‧發光二極體脈波寬度調變驅動電流 112‧‧‧Lighting diode pulse width modulation drive current
1022‧‧‧脈波寬度調變驅動電路 1022‧‧‧ Pulse width modulation drive circuit
Claims (9)
一發光二極體驅動單元，該發光二極體驅動單元電性連接至該發光二極體；
一脈波寬度調變產生控制單元，該脈波寬度調變產生控制單元電性連接至該發光二極體驅動單元及該使用者端設定單元；及
一調光單元，該調光單元電性連接至該脈波寬度調變產生控制單元，
其中該使用者端設定單元傳送一使用者端設定信號至該脈波寬度調變產生控制單元；該調光單元傳送一調光信號至該脈波寬度調變產生控制單元；該脈波寬度調變產生控制單元將該使用者端設定信號之數值乘上該調光信號之數值，以得到一脈波寬度調變輸出電流控制信號；該脈波寬度調變產生控制單元傳送該脈波寬度調變輸出電流控制信號至該發光二極體驅動單元；該發光二極體驅動單元將該脈波寬度調變輸出電流控制信號之數值乘上該發光二極體驅動單元之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流；該發光二極體驅動單元以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。The invention relates to a light-emitting diode driving device capable of changing an output current, which is applied to at least one light-emitting diode and a user terminal setting unit, and the light-emitting diode driving device capable of changing the output current comprises:
a light emitting diode driving unit, the light emitting diode driving unit is electrically connected to the light emitting diode;
a pulse width modulation generating control unit, the pulse width modulation generating control unit is electrically connected to the LED driving unit and the user end setting unit; and a dimming unit, the dimming unit is electrically Connected to the pulse width modulation generation control unit,
The user terminal setting unit transmits a user terminal setting signal to the pulse width modulation generation control unit; the dimming unit transmits a dimming signal to the pulse width modulation generation control unit; the pulse width modulation The variable generation control unit multiplies the value of the user end setting signal by the value of the dimming signal to obtain a pulse width modulation output current control signal; the pulse width modulation generation control unit transmits the pulse width modulation Changing the output current control signal to the LED driving unit; the LED driving unit multiplies the value of the pulse width modulation output current control signal by the maximum output current of one of the LED driving units And obtaining a light-emitting diode pulse width modulation driving current; the light-emitting diode driving unit drives the light-emitting diode with the light-emitting diode pulse width modulation driving current.
一使用者端設定單元；
一發光二極體驅動單元，該發光二極體驅動單元電性連接至該發光二極體；
一脈波寬度調變產生控制單元，該脈波寬度調變產生控制單元電性連接至該發光二極體驅動單元及該使用者端設定單元；及
一調光單元，該調光單元電性連接至該脈波寬度調變產生控制單元，
其中該使用者端設定單元傳送一使用者端設定信號至該脈波寬度調變產生控制單元；該調光單元傳送一調光信號至該脈波寬度調變產生控制單元；該脈波寬度調變產生控制單元將該使用者端設定信號之數值乘上該調光信號之數值，以得到一脈波寬度調變輸出電流控制信號；該脈波寬度調變產生控制單元傳送該脈波寬度調變輸出電流控制信號至該發光二極體驅動單元；該發光二極體驅動單元將該脈波寬度調變輸出電流控制信號之數值乘上該發光二極體驅動單元之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流；該發光二極體驅動單元以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。A light-emitting diode driving device capable of changing an output current is applied to at least one light-emitting diode, and the light-emitting diode driving device capable of changing an output current comprises:
a user terminal setting unit;
a light emitting diode driving unit, the light emitting diode driving unit is electrically connected to the light emitting diode;
a pulse width modulation generating control unit, the pulse width modulation generating control unit is electrically connected to the LED driving unit and the user end setting unit; and a dimming unit, the dimming unit is electrically Connected to the pulse width modulation generation control unit,
The user terminal setting unit transmits a user terminal setting signal to the pulse width modulation generation control unit; the dimming unit transmits a dimming signal to the pulse width modulation generation control unit; the pulse width modulation The variable generation control unit multiplies the value of the user end setting signal by the value of the dimming signal to obtain a pulse width modulation output current control signal; the pulse width modulation generation control unit transmits the pulse width modulation Changing the output current control signal to the LED driving unit; the LED driving unit multiplies the value of the pulse width modulation output current control signal by the maximum output current of one of the LED driving units And obtaining a light-emitting diode pulse width modulation driving current; the light-emitting diode driving unit drives the light-emitting diode with the light-emitting diode pulse width modulation driving current.
該使用者端設定單元傳送一使用者端設定信號至該脈波寬度調變產生控制單元；
該調光單元傳送一調光信號至該脈波寬度調變產生控制單元；
該脈波寬度調變產生控制單元將該使用者端設定信號之數值乘上該調光信號之數值，以得到一脈波寬度調變輸出電流控制信號；
該脈波寬度調變產生控制單元傳送該脈波寬度調變輸出電流控制信號至該發光二極體驅動單元；
該發光二極體驅動單元將該脈波寬度調變輸出電流控制信號之數值乘上該發光二極體驅動單元之一最大輸出電流之數值，以得到一發光二極體脈波寬度調變驅動電流；及
該發光二極體驅動單元以該發光二極體脈波寬度調變驅動電流驅動該發光二極體。A method for changing an output current of a light-emitting diode driving device is applied to a light-emitting diode driving device and at least one light-emitting diode, wherein the light-emitting diode driving device comprises a user terminal setting unit and a light-emitting diode The body driving unit, a pulse width modulation generating control unit and a dimming unit, the method for changing the output current of the LED driving device comprises:
The user terminal setting unit transmits a user terminal setting signal to the pulse width modulation generation control unit;
The dimming unit transmits a dimming signal to the pulse width modulation generation control unit;
The pulse width modulation generation control unit multiplies the value of the user end setting signal by the value of the dimming signal to obtain a pulse width modulation output current control signal;
The pulse width modulation generation control unit transmits the pulse width modulation output current control signal to the LED driving unit;
The LED driving unit multiplies the value of the pulse width modulation output current control signal by the maximum output current of one of the LED driving units to obtain a light-emitting diode pulse width modulation driving And the LED driving unit drives the LED by the pulse width modulation driving current of the LED.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592705A (en) * | 2017-09-30 | 2018-01-16 | 矽力杰半导体技术(杭州)有限公司 | The LED drive circuit and light-dimming method of tunable optical |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107592705A (en) * | 2017-09-30 | 2018-01-16 | 矽力杰半导体技术(杭州)有限公司 | The LED drive circuit and light-dimming method of tunable optical |
| CN107592705B (en) * | 2017-09-30 | 2019-08-27 | 矽力杰半导体技术(杭州)有限公司 | The LED drive circuit and light-dimming method of tunable optical |
| US10492259B2 (en) | 2017-09-30 | 2019-11-26 | Silergy Semiconductor Technology (Hangzhou) Ltd | Dimmable LED driver and dimming method |
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| Publication number | Publication date |
|---|---|
| TWI503047B (en) | 2015-10-01 |
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