CN103974505A - LED Lighting Device - Google Patents
LED Lighting Device Download PDFInfo
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- CN103974505A CN103974505A CN201410043771.9A CN201410043771A CN103974505A CN 103974505 A CN103974505 A CN 103974505A CN 201410043771 A CN201410043771 A CN 201410043771A CN 103974505 A CN103974505 A CN 103974505A
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Abstract
The invention discloses an LED lighting device including a first light emitting assembly, a second light emitting assembly, a first current controller and a second current controller. The first current controller is connected to the first light emitting assemhbly in parallel and is used for operating based on a first current setting value, a first starting voltage and a first switching-off voltage. A second current controller is conected to a second light emitting assembly in seeies and is used for operating based on a second current setting value. The first current setting value, the second current setting value, the first starting voltage and a first switching-off voltage can be set through mode selecting pins of the first current controller and the second current controller. Therefore, operable voltage range and luminance of the LED lighting device can be increased and elasticity characteristics can be provided.
Description
Technical field
The present invention relates to a kind of light emitting diode illuminating apparatus, relate in particular to a kind of light emitting diode illuminating apparatus that possesses high power factor and tunable characteristic.
Background technology
Compared to traditional incandescent lamp bulb, light-emitting diode (light emitting diode, LED) have that power consumption is low, assembly life-span is long, volume is little, need not warm up the lamp time and the advantage such as reaction speed is fast, and can fit applications demand and make the assembly of minimum or array type.Except outdoor display, traffic lights, various consumption electronic products, for example, outside the LCD Panel backlight of mobile phone, notebook computer or TV, light-emitting diode is also applied to various indoor and outdoor lighting device widely, to replace fluorescent tube or incandescent lamp bulb etc.
In the illumination application directly driving in AC power, because light-emitting diode is a current drives assembly, its luminosity is directly proportional to the size of drive current, and in order to reach the uniform requirement of high brightness and brightness, often needing provides enough light sources with the light-emitting diode of many serial connections.The quantity of series connection light-emitting diode is more, the required forward bias voltage drop of conducting light-emitting device is higher, if light-emitting diode quantity very little, can make light-emitting diode drive current in the time of rectified AC voltage tool maximum excessive, and then affect the reliability of light-emitting diode.Therefore, need to a kind ofly can increase can operating voltage range and the light emitting diode illuminating apparatus of taking into account reliability.
Summary of the invention
Because the problem of above-mentioned prior art the object of the present invention is to provide a kind of light emitting diode illuminating apparatus that possesses high power factor and tunable characteristic.
For reaching above-mentioned object, the present invention discloses a kind of light emitting diode illuminating apparatus, and it comprises one first luminescence component, one second luminescence component, one first current controller and one second current controller.Described the first luminescence component comprises a first end, is coupled to a rectified AC voltage; And one second end.Described the second luminescence component is series at described the first luminescence component.Described the first current controller is used for operating according to one first current setting value and one first switched voltage, and comprises one first pin, is coupled to the described first end of described the first luminescence component; One second pin, is coupled to described second end of described the first luminescence component; And multiple model selection pins, be used for setting in described the first current setting value and described the first switched voltage at least one of them.Described the second current controller is used for operating according to one second current setting value, and comprises one first pin, is coupled to described the second luminescence component; One second pin, is coupled to described rectified AC voltage; And multiple model selection pins, be used for setting described the second current setting value.
The present invention also discloses a kind of light emitting diode illuminating apparatus, and it comprises the first luminescence component, one second luminescence component, one the 3rd luminescence component, one the 4th luminescence component, one first current controller, one second current controller, one the 3rd current controller and one the 4th current controller.Described the first luminescence component comprises a first end, is coupled to a rectified AC voltage; And one second end.Described the second luminescence component comprises a first end, is coupled to described second end of described the first luminescence component; And one second end.Described the 3rd luminescence component comprises a first end, is coupled to described second end of described the second luminescence component; And one second end.Described the 4th luminescence component comprises a first end, is coupled to described second end of described the 3rd luminescence component; And one second end.Described the first current controller is used for conducting and is not more than one first electric current of one first current setting value, cuts out voltage be and cut out within a rising cycle of described rectified AC voltage according to one first, and is unlatching according to one first cut-in voltage within a decline cycle of described rectified AC voltage.Described the first current controller comprises one first pin, is coupled to the described first end of described the first luminescence component; One second pin, is coupled to described second end of described the first luminescence component; And first mode base pin selection and an one second model selection pin, be used for setting described the first current setting value, described first and close in voltage and described the first cut-in voltage at least one of them.Described the second current controller, was used for conducting and is not more than one second electric current of one second current setting value, cuts out voltage be and cut out within the described rising cycle according to one second, and be unlatching according to one second cut-in voltage within described decline cycle.Described the second current controller comprises one first pin, is coupled to the described first end of described the second luminescence component; One second pin, is coupled to described second end of described the second luminescence component; And first mode base pin selection and an one second model selection pin, be used for setting described the second current setting value, described second and close in voltage and described the second cut-in voltage at least one of them.Described the 3rd current controller, was used for conducting and is not more than one the 3rd electric current of one the 3rd current setting value, cuts out voltage be and cut out within the described rising cycle according to one the 3rd, and be unlatching according to one the 3rd cut-in voltage within described decline cycle.Described the 3rd current controller comprises one first pin, is coupled to the described first end of described the 3rd luminescence component; One second pin, is coupled to described second end of described the 3rd luminescence component; And first mode base pin selection and an one second model selection pin, be used for setting described the 3rd current setting value, the described the 3rd and close in voltage and described the 3rd cut-in voltage at least one of them.Described the 4th current controller is used for conducting and is not more than one the 4th electric current of one the 4th current setting value, and comprises one first pin, is coupled to described second end of described the 4th luminescence component; One second pin, is coupled to described rectified AC voltage; And first mode base pin selection and an one second model selection pin, be used for setting described the 4th current setting value.
Brief description of the drawings
Fig. 1 is the schematic diagram of light emitting diode illuminating apparatus in the embodiment of the present invention.
Fig. 2 to Fig. 6 is schematic diagram when light emitting diode illuminating apparatus operates in the embodiment of the present invention.
Fig. 7 is the schematic diagram of current controller in the embodiment of the present invention.
Fig. 8 is the schematic diagram of adjustable reference voltage generator in the embodiment of the present invention.
Wherein, description of reference numerals is as follows:
30 voltage detection circuits
50 control circuits
32 logical circuits
34 voltage edge circuit for detecting
60 current-sensing circuits
70 adjustable reference voltage generators
72 bleeder circuits
100 light emitting diode illuminating apparatus
110 power supply circuits
112 bridge rectifiers
QN switch
R1 resistance
CP0 comparator
CP1, CP2 hysteresis comparator
CC
1～CC
4current controller
LED
1～LED
4light-emitting device
MUX1～MUX3 selected cell
Embodiment
Fig. 1 is the schematic diagram of a light emitting diode illuminating apparatus 100 in the embodiment of the present invention.Light emitting diode illuminating apparatus 100 comprises a power supply circuit 110, (N+1) individual current controller CC
1～CC
n+1(N+1) individual light-emitting device LED
1～LED
n+1, wherein N is positive integer.Power supply circuit 110 can receive the alternating voltage VS of the positive negative cycle of a tool, and utilizes a bridge rectifier 112 to change the output voltage of alternating voltage VS in negative cycle, and therefore a rectified AC voltage V can be provided
aCto drive light-emitting device LED
1～LED
n+1, wherein rectified AC voltage V
aCvalue have cyclic variation along with the time.In other embodiments, power supply circuit 110 can receive any alternating voltage VS, utilizes an AC-AC transducer to carry out voltage transitions, and utilizes bridge rectifier 112 to carry out rectification to the alternating voltage VS after changing, and therefore rectified AC voltage V can be provided
aCto drive light-emitting device LED
1～LED
n+1, wherein rectified AC voltage V
aCvalue have cyclic variation along with the time.Structure that it should be noted that power supply circuit 110 not delimit the scope of the invention.
Each light-emitting device LED
1～LED
n+1can comprise a light-emitting diode or multiple serial connection or light-emitting diode in parallel.Fig. 1 has shown the framework that adopts multiple serial connection light-emitting diodes, but does not limit scope of the present invention.
Current controller CC
1～CC
n+1be parallel to respectively corresponding light-emitting device LED
1～LED
n, and current controller CC
n+1be series at light-emitting device LED
n+1.Each current controller CC
1～CC
n+1can be made into the chip that comprises one first pin A, one second pin K and n model selection pin MS1～MSn, wherein n is for meeting 2
n≤ positive integer (N+1).At each current controller CC
1～CC
nin, pin A and pin K are coupled to the two ends of corresponding light-emitting device, and model selection pin MS1～MSn is coupled to its pin A, pin K or suspension joint.At current controller CC
n+1in, pin A is coupled to light-emitting device LED
n+1, pin K is coupled to power supply circuit 110, and model selection pin MS1～MSn is coupled to its pin A, pin K or suspension joint.
For convenience of description, embodiment when Fig. 1 has shown N=3 and n=2.V
aK1～V
aK4represent respectively current controller CC
1～CC
4cross-pressure.I
aK1～I
aK4represent respectively the current controller CC that flows through
1～CC
4electric current.I
lED1～I
lED4represent respectively the light-emitting device LED that flows through
1～LED
4electric current.I
lEDrepresent the overall current of light emitting diode illuminating apparatus 100.
Fig. 2 to Fig. 6 has illustrated the running of light emitting diode illuminating apparatus 100 in the embodiment of the present invention, and wherein Fig. 2 to Fig. 5 has shown current controller CC
1～CC
4i-E characteristic figure when running, and Fig. 6 has shown the variation of correlated current and voltage when light emitting diode illuminating apparatus 100 operates.V
c1～V
c4represent respectively current controller CC
1～CC
4cut-ff voltage (cut-in voltage) while starting conducting.V
dROP1～V
dROP4represent respectively the current controller CC that flows through
1～CC
4electric current I
aK1～I
aK4reach respectively its corresponding current limit value I
mAX1～I
mAX4time output difference voltage (drop-out voltage).V
oN1～V
oN3represent respectively current controller CC
1～CC
3cut-in voltage.V
oFF1～V
oFF3represent respectively current controller CC
1～CC
3close voltage.In embodiments of the present invention, current controller CC
1～CC
4cut-ff voltage V
c1～V
c4be less than corresponding light-emitting device LED
1～LED
4cut-ff voltage.
In Fig. 2 to Fig. 5, at rectified AC voltage V
aCthe rising cycle and decline cycle in work as 0<V
aK1<V
dROP1, 0<V
aK2<V
dROP2, 0<V
aK3<V
dROP3or 0<V
aK4<V
dROP4time, each current controller CC
1～CC
4all not conducting completely can operate now electric current I as voltage-controlled assembly under linear model
aK1～I
aK4can be along with its cross-pressure V
aK1～V
aK4be specific change.For instance, if current controller CC
1make electric current I with metal-oxide-semiconductor (MOS) (metal-oxide-semiconductor, MOS) transistor
aK1with voltage V
aK1electric current--the voltage characteristic of relation can operate in linear zone corresponding to MOS transistor time.
In Fig. 2 to Fig. 5, at rectified AC voltage V
aCthe rising cycle in work as V
dROP1<V
aK1<V
oFF1, V
dROP2<V
aK2<V
oFF2, V
dROP3<V
aK3<V
oFF3or V
dROP4<V
aK4time, and at rectified AC voltage V
aCdecline cycle in work as V
dROP1<V
aK1<V
oN1, V
dROP2<V
aK2<V
oN2, V
dROP3<V
aK3<V
oN3or V
dROP4<V
aK4time, each current controller CC
1～CC
4can as flow restricter, under constant current mode, operate.Therefore, the current controller CC that flows through
1～CC
4electric current can be clamped at respectively fixed value I
mAX1～I
mAX4, and can be along with voltage V
aK1～V
aK4and change.
In Fig. 2 to Fig. 4, at rectified AC voltage V
aCthe rising cycle in as voltage V
aK1～V
aK3rise to respectively higher than the corresponding voltage V that closes
oFF1～V
oFF3time, electric current I
aK1～I
aK4can be down to 0, and current controller CC
1～CC
3can switch to a cut-off mode.Change current controller CC
1～CC
3similarly be open circuit assembly, can allow electric current I
lED1～I
lED3along with rectified AC voltage V
aCand changing, or the adjacent current controller institute strangulation being operated under constant current mode.At rectified AC voltage V
aCdecline cycle in as voltage V
aK1～V
aK3drop to respectively lower than corresponding cut-in voltage V
oN1～V
oN3time, current controller CC
1～CC
3can as flow restricter, under constant current mode, operate.
Fig. 6 has shown embodiment of the present invention light emitting diode illuminating apparatus 100 voltage V in the time of running
aCand electric current I
lEDwaveform.As previously mentioned, due to rectified AC voltage V
aCvalue have cyclic variation along with the time, therefore to comprise time point t
0～t
10one-period explain, wherein time point t
0～t
5between be rectified AC voltage V
aCthe rising cycle, and time point t
5～t
10between be rectified AC voltage V
aCdecline cycle.
First the running of light emitting diode illuminating apparatus 100 within the rising cycle be described.At time point t
0and t
1between, as voltage V
aK1～V
aK4along with rectified AC voltage V
aCand rise time, the current controller CC that cut-ff voltage is less
1～CC
4first be switched on, now electric current I
lEDcurrent controller CC can sequentially flow through
1～CC
3, light-emitting device LED
4with current controller CC
4.At time point t
1and t
2between, as voltage V
aK1value be greater than and close voltage V
oFF1time, current controller CC
1first be closed, now electric current I
lEDlight-emitting device LED can sequentially flow through
1, current controller CC
2～CC
3, light-emitting device LED
4with current controller CC
4.At time point t
2and t
3between, as voltage V
aK2value be greater than and close voltage V
oFF2time, current controller CC
2then be closed, now electric current I
lEDlight-emitting device LED can sequentially flow through
1～LED
2, current controller CC
3, light-emitting device LED
4with current controller CC
4.At time point t
3and t
4between, as voltage V
aK3value be greater than and close voltage V
oFF3time, current controller CC
3then be closed, now electric current I
lEDlight-emitting device LED can sequentially flow through
1～LED
4with current controller CC
4.At time point t
4and t
5between, electric current I
lEDcan be by current controller CC
4strangulation is at fixed value I
mAX4.
At t decline cycle
5and t
10between, as voltage V
aK3, V
aK2and V
aK1be brought down below respectively in order cut-in voltage V
oN3, V
oN2and V
oN1time, current controller CC
3～CC
1can be in order respectively at time point t
5～t
10be unlocked.Interval t within the rising cycle
0～t
1, t
1～t
2, t
2～t
3, t
3～t
4and t
4～t
5correspond to respectively the interval t within decline cycle
9～t
10, t
8～t
9, t
7～t
8, t
6～t
7and t
5～t
6.Therefore, the running of light emitting diode illuminating apparatus 100 within decline cycle and the running within the rising cycle are similar, separately do not add and repeat at this.
In many application, light-emitting device LED
1～LED
4may need to provide different brightness or start luminous in different time points.In the present invention, by set model base pin selection MS1～MS2, current controller CC
1～CC
4different current setting values and conducting/close magnitude of voltage can be flexibly provided.Therefore, according to different application, the conducting/closing sequence of each light-emitting device, conducting/close the cycle and brightness can be adjusted easily.In the embodiment shown in Fig. 2 to Fig. 6, current controller CC
1～CC
4can set for and make I
mAX1<I
mAX2<I
mAX3<I
mAX4, V
oN1<V
oN2<V
oN3, and V
oFF1<V
oFF2<V
oFF3.Change, in same period, current controller CC
4oN time the longest, and current controller CC
1oN time the shortest.
Fig. 7 is current controller CC in the embodiment of the present invention
1～CC
n+1schematic diagram.Fig. 7 has shown current controller CC
1to explain, it comprises a switch QN, a voltage detection circuit 30, and a control circuit 50.
Switch QN can be a field-effect transistor (Field Effect Transistor, FET), a two-carrier junction transistor (Bipolar Junction Transistor, BJT), or the assembly of other tool similar functions, the embodiment of Fig. 7 explains with N-type metal-oxide semiconductor (MOS) (N-TypeMetal-Oxide-Semiconductor) field-effect transistor, but does not limit scope of the present invention.The grid of switch QN is coupled to control circuit 50 with reception control signal S1, and its drain electrode-source voltage, grid-source voltage and critical voltage are respectively by V
dS, V
gSand V
tHrepresent.In the time that switch QN operates in linear zone, its drain current is mainly by drain electrode-source voltage V
dSdecide; In the time that switch QN operates in saturation region, its drain current is only relevant to grid-source voltage V
gS.
At rectified AC voltage V
aCthe rising cycle, drain electrode-source voltage V of switch QN
dScan be along with voltage V
aK1and increase: as voltage V
aK1value be not more than V
dROP1time, drain electrode-source voltage V
dSbe less than grid-source voltage V
gSwith critical voltage V
tHdifference (that is V
dS<V
gS-V
tH), and the control signal S1 that control circuit 50 provides can allow V
gS>V
tH, therefore switch QN can operate in linear zone, and now its drain current depends primarily on drain electrode-source voltage V
dS, that is current controller CC
1can allow electric current I
aK1with voltage V
aK1between relation present the linear zone characteristic as switch QN.
At rectified AC voltage V
aCthe rising cycle, as voltage V
aK1value between V
dROP1with voltage V
oFF1between time, drain electrode-source voltage V
dSbe greater than grid-source voltage V
gSwith critical voltage V
tHdifference (V
dS>V
gS-V
tH), and the control signal S1 that control circuit 50 provides can allow V
gS>V
tH, therefore switch QN can operate in saturation region, and now its drain current is only relevant to grid-source voltage V
gS, that is electric current I
aK1value can be along with voltage V
aK1change.
Voltage detection circuit 30 comprises a logical circuit 32, a voltage edge circuit for detecting 34, and two magnetic hysteresis (h
ysteresis) comparator C P1 and CP2.Hysteresis comparator CP1 is used for judging voltage V
aK1with voltage V
oN1between magnitude relationship, and hysteresis comparator CP2 is used for judging voltage V
aK1with voltage V
oFF1between magnitude relationship.Meanwhile, as voltage V
aK1value between V
oFF1and V
oN1between time, voltage edge circuit for detecting 34 can judge it is now rectified AC voltage V
aCrising cycle or decline cycle.According to the judged result of voltage edge circuit for detecting 34 and hysteresis comparator CP1, CP2, logical circuit 32 is exported a corresponding control signal S2 more according to this to control circuit 50.
Control circuit 50 comprises a comparator C P0, a current-sensing circuit 60, and an adjustable reference voltage generator 70.Current-sensing circuit 60 is used for detecting the electric current I of the switch QN that flows through
aK1, and then judge corresponding voltage V
aK1whether exceed V
dROP1.In the embodiment shown in fig. 7, current-sensing circuit 60 comprises a resistance R 1 and is relevant to electric current I to provide
aK1feedback voltage V
fB1, but the structure of current-sensing circuit 60 not delimit the scope of the invention.
Adjustable reference voltage generator 70 is used to provide and is relevant to respectively voltage V
aK1～V
aK4multiple reference voltage V
rEF1～V
rEF4, and carry out output reference voltage V according to the logic current potential of model selection pin MS1～MS2
rEF1～V
rEF4one of them.In the embodiment shown in fig. 7, current controller CC
1adjustable reference voltage generator 70 output reference voltage V
rEF1to comparator C P0.In like manner, current controller CC
2～CC
4adjustable reference voltage generator 70 can distinguish output reference voltage V
rEF2～V
rEF4to corresponding comparator C P0.
According to control signal S2, feedback voltage V
fB1with reference voltage V
rEF1, the exportable control signal S1 of comparator C P0 is with console switch QN.Work as feedback voltage V
fB1be less than reference voltage V
rEF1time, comparator C P0 can increase control signal S1 to increase the electric current of the switch QN that flows through, until feedback voltage V
fB1reach reference voltage V
rEF1till.Work as feedback voltage V
fB1be greater than reference voltage V
rEF1time, comparator C P0 can downgrade control signal S1 to reduce the electric current of the switch QN that flows through, until feedback voltage V
fB1reach reference voltage V
rEF1till.
Current controller CC
1maximum limit flow valuve I
mAX1can be by (V
rEF1/ R1) decide current controller CC
2maximum limit flow valuve I
mAX2can be by (V
rEF2/ R2) decide current controller CC
3maximum limit flow valuve I
mAX3can be by (V
rEF3/ R3) decide, and current controller CC
4maximum limit flow valuve I
mAX4can be by (V
rEF4/ R4) decide.By setting the model selection pin MS1～MS2 of each current controller, current controller CC
1～CC
4different current setting values and conducting/close magnitude of voltage, as shown in Figures 2 to 5 can be flexibly provided.
In an embodiment of the present invention, light emitting diode illuminating apparatus 100 also can provide overvoltage protection.More clearly, as current controller CC
4pin A and pin K on cross-pressure while exceeding a predetermined value, current controller CC
4close to avoid super-high-current damage light-emitting device LED
1～LED
n+1.
Fig. 8 is the schematic diagram of adjustable reference voltage generator 70 in the embodiment of the present invention.Adjustable voltage generator 70 comprises a bleeder circuit 72 and selected cell MUX1～MUX3.Bleeder circuit 72 can comprise a resistance string, is used for according to an inner supply voltage V
rEGmultiple voltage V are provided
rEF1～V
rEF4, V
oN1～V
oN3and V
oFF1～V
oFF3.Inner supply voltage V
rEGcan be provided by the internal source voltage in chip, for example, be provided by low pressure drop (lowdropout, a LDO) pressurizer.According to the logic current potential of model selection pin MS1～MS2, the exportable voltage V of selected cell MUX1
rEF1～V
rEF4one of them is with as reference voltage, the exportable voltage V of selected cell MUX2
oN1～V
oN3one of them is with as cut-in voltage, and the exportable voltage V of selected cell MUX3
oFF1～V
oFF3one of them is with as closing voltage.For the embodiment shown in Fig. 1, current controller CC
1～CC
4the current setting value providing and conducting/closing magnitude of voltage can be as shown in the table, but not delimit the scope of the invention.
In the above-described embodiments, current controller CC
4can set for maximum current set point I is provided
mAX4, and current controller CC
1can set for minimum current set point I is provided
mAX1(I
mAX1=0.33*I
mAX4).Current controller CC
3can set for maximum conducting/close magnitude of voltage I is provided
oN3/ I
oFF3, and current controller CC
1can set for minimum conducting/close magnitude of voltage I is provided
oN1/ I
oFF1(V
oN1=0.89*V
oN3and V
oFF1=0.89*V
oFF3).
In the present invention, a pair of corresponding current controller and light-emitting device can be produced on same integrated chip.For instance, integrated chip U1 comprises current controller CC
1with light-emitting device LED
1, integrated chip U2 comprises current controller CC
2with light-emitting device LED
2..., and integrated chip UN comprises current controller CC
nwith light-emitting device LED
n.Integrated chip U1～UN can be the stand-alone assembly of making in same processing procedure.In different application, integrated chip U1～UN that different light emitting diode illuminating apparatus comprise can adopt different printing circuit board (PCB) layout, to set the logic current potential of current controller internal schema base pin selection.Therefore, light emitting diode illuminating apparatus of the present invention can provide elastic characteristic, but can not increase processing procedure difficulty.
Light emitting diode illuminating apparatus of the present invention utilizes current controller to control to flow through size of current and the conducting number of serial connection light-emitting diode, can turning part light-emitting diode before rectified AC voltage not yet reaches the overall isolation voltage of all light-emitting diodes, therefore can increase the power factor (PF) of light emitting diode illuminating apparatus.By set model base pin selection MS1～MS2, current controller of the present invention can flexibly provide different current setting values and conducting/cut out magnitude of voltage, makes the conducting/closing sequence, conducting of each light-emitting device/close the cycle and brightness can be adjusted easily according to different application.Therefore, can provide can operating voltage range broadness, high brightness and possess the light emitting diode illuminating apparatus of elastic characteristic in the present invention.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a light emitting diode illuminating apparatus, is characterized in that:
One first luminescence component, it comprises:
One first end, is coupled to a rectified AC voltage; And
One second end;
One second luminescence component, is series at described the first luminescence component;
One first current controller, is used for operating according to one first current setting value and one first switched voltage, and comprises:
One first pin, is coupled to the described first end of described the first luminescence component;
One second pin, is coupled to described second end of described the first luminescence component; And
Multiple model selection pins, are used for setting in described the first current setting value and described the first switched voltage at least one of them; And
One second current controller, is used for operating according to one second current setting value, and comprises:
One first pin, is coupled to described the second luminescence component;
One second pin, is coupled to described rectified AC voltage; And
Multiple model selection pins, are used for setting described the second current setting value.
2. light emitting diode illuminating apparatus as claimed in claim 1, is characterized in that:
Within rising cycle of described rectified AC voltage or a decline cycle in the time that the cross-pressure of described the first current controller is not more than first voltage, described the first luminescence component is closes, and described the first current controller is used for one first electric current that conducting changes along with described rectified AC voltage;
In the described rising cycle when the cross-pressure of described the first current controller is greater than described the first voltage but while being not more than described the first switched voltage, described the first luminescence component is closes, and described the first current controller is used for described the first electric current to maintain described the first current setting value; And
In the described rising cycle, in the time that the cross-pressure of described the first current controller is greater than described the first switched voltage, described the first current controller is closes, and described the first luminescence component is unlatching with the first electric current described in conducting.
3. light emitting diode illuminating apparatus as claimed in claim 2, is characterized in that:
In described decline cycle when the cross-pressure of described the first current controller is greater than described the first voltage but while being not more than second switched voltage, described the first current controller is separately used for described in conducting the first electric current described the first electric current is maintained to described the first current setting value; And
Described the second switched voltage is more than or equal to described the first switched voltage.
4. light emitting diode illuminating apparatus as claimed in claim 2, is characterized in that, described the first switched voltage and described the second switched voltage are decided by the logic current potential of described multiple model selection pins of described the first current controller.
5. light emitting diode illuminating apparatus as claimed in claim 3, is characterized in that, described the first current controller comprises:
One switch, is used for operating according to one first control signal;
One voltage detection circuit, is used for monitoring the cross-pressure of described the first current controller, and exports one second corresponding control signal; And
One control circuit, is used for providing described the first control signal according to the logic current potential of described multiple model selection pins of the electric current of described the second control signal, the described switch of flowing through and described the first current controller.
6. light emitting diode illuminating apparatus as claimed in claim 5, is characterized in that, described voltage detection circuit comprises:
One voltage edge circuit for detecting, is used for judging that described rectified AC voltage is in described rising cycle or described decline cycle;
One first hysteresis comparator, is used for judging the magnitude relationship between described the first switched voltage and the cross-pressure of described the first current controller;
One second hysteresis comparator, is used for judging the magnitude relationship between described the second switched voltage and the cross-pressure of described the first current controller; And
One logical circuit, is used for providing described the second control signal according to the judged result of described voltage edge circuit for detecting, described the first hysteresis comparator and described the second hysteresis comparator.
7. light emitting diode illuminating apparatus as claimed in claim 5, is characterized in that, described control circuit comprises:
One adjustable reference voltage generator, is used to provide multiple reference voltages, and according to the logic current potential of described multiple model selection pins of described the first current controller export described multiple reference voltage one of them;
One current-sensing circuit, is serially connected with described switch, is used for detecting the electric current of the described switch of flowing through and a corresponding feedback voltage being provided; And
One comparator, the magnitude relationship between the reference voltage that is used for exporting according to described feedback voltage and described adjustable reference voltage generator provides described the first control signal.
8. light emitting diode illuminating apparatus as claimed in claim 1, is characterized in that,
Within rising cycle of described rectified AC voltage or a decline cycle, in the time that the cross-pressure of described the second current controller is not more than a second voltage, described the second current controller is used for one the 3rd electric current that conducting changes along with described rectified AC voltage;
In described rising cycle or described decline cycle, in the time that the cross-pressure of described the second current controller is greater than described second voltage, described the second current controller is used for described the 3rd electric current to maintain described the second current setting value.
9. light emitting diode illuminating apparatus as claimed in claim 1, it is characterized in that, described the first current controller and described the first luminescence component are produced in one first integrated chip, and described the second current controller and described the second luminescence component are produced in one second integrated chip.
10. a light emitting diode illuminating apparatus, is characterized in that, comprises:
One first luminescence component, it comprises:
One first end, is coupled to a rectified AC voltage; And
One second end;
One second luminescence component, it comprises:
One first end, is coupled to described second end of described the first luminescence component; And
One second end;
One the 3rd luminescence component, it comprises:
One first end, is coupled to described second end of described the second luminescence component; And
One second end;
One the 4th luminescence component, it comprises:
One first end, is coupled to described second end of described the 3rd luminescence component; And
One second end;
One first current controller, being used for conducting is not more than one first electric current of one first current setting value, closes voltage be and close within a rising cycle of described rectified AC voltage according to one first, and be unlatching according to one first cut-in voltage within a decline cycle of described rectified AC voltage, described the first current controller comprises:
One first pin, is coupled to the described first end of described the first luminescence component;
One second pin, is coupled to described second end of described the first luminescence component; And
One first mode base pin selection and one second model selection pin, be used for setting described the first current setting value, described first and close in voltage and described the first cut-in voltage at least one of them;
One second current controller, being used for conducting is not more than one second electric current of one second current setting value, closes voltage be and close within the described rising cycle according to one second, and be unlatching according to one second cut-in voltage within described decline cycle, described the second current controller comprises:
One first pin, is coupled to the described first end of described the second luminescence component;
One second pin, is coupled to described second end of described the second luminescence component; And
One first mode base pin selection and one second model selection pin, be used for setting described the second current setting value, described second and close in voltage and described the second cut-in voltage at least one of them;
One the 3rd current controller, being used for conducting is not more than one the 3rd electric current of one the 3rd current setting value, closes voltage be and close within the described rising cycle according to one the 3rd, and be unlatching according to one the 3rd cut-in voltage within described decline cycle, described the 3rd current controller comprises:
One first pin, is coupled to the described first end of described the 3rd luminescence component;
One second pin, is coupled to described second end of described the 3rd luminescence component; And
One first mode base pin selection and one second model selection pin, be used for setting described the 3rd current setting value, the described the 3rd and close in voltage and described the 3rd cut-in voltage at least one of them; And
One the 4th current controller, is used for conducting and is not more than one the 4th electric current of one the 4th current setting value, and comprise:
One first pin, is coupled to described second end of described the 4th luminescence component;
One second pin, is coupled to described rectified AC voltage; And
One first mode base pin selection and one second model selection pin, be used for setting described the 4th current setting value.
11. light emitting diode illuminating apparatus as claimed in claim 10, it is characterized in that, described the first current controller and described the first luminescence component are produced in one first integrated chip, described the second current controller and described the second luminescence component are produced in one second integrated chip, described the 3rd current controller and described the 3rd luminescence component are produced in one the 3rd integrated chip, and described the 4th current controller and described the 4th luminescence component are produced in one the 4th integrated chip.
12. light emitting diode illuminating apparatus as claimed in claim 11, is characterized in that, described the first integrated chip is arranged to one first configuration, one second configuration, one the 3rd configuration or one the 4th configuration, and:
Under described the first configuration, the described first mode base pin selection of described the first current controller is suspension joint or described the first pin that is coupled to described the first current controller, and the described second model selection pin of described the first current controller is coupled to described second pin of described the first current controller;
Under described the second configuration, the described first mode base pin selection of described the first current controller is coupled to described second pin of described the first current controller, and the described second model selection pin of described the first current controller is suspension joint or described the first pin that is coupled to described the first current controller;
Under described the 3rd configuration, the described first mode base pin selection of described the first current controller and described the second model selection pin are suspension joint or described the first pin that is coupled to described the first current controller; And
Under described the 4th configuration, the described first mode base pin selection of described the first current controller and described the second model selection pin are coupled to described second pin of described the first current controller.
13. light emitting diode illuminating apparatus as claimed in claim 11, is characterized in that:
Described the first integrated chip is arranged to one first configuration, the described first mode base pin selection that makes described the first current controller is suspension joint or described the first pin that is coupled to described the first current controller, and the described second model selection pin of described the first current controller is coupled to described second pin of described the first current controller;
Described the second integrated chip is arranged to one second configuration, make the described first mode base pin selection of described the second current controller be coupled to described second pin of described the second current controller, and the described second model selection pin of described the second current controller is suspension joint or described the first pin that is coupled to described the second current controller;
Described the 3rd integrated chip is arranged to one the 3rd configuration, and making the described first mode base pin selection of described the 3rd current controller and described the second model selection pin is suspension joint or described the first pin that is coupled to described the 3rd current controller; And
Described the 4th integrated chip is arranged to one the 4th configuration, makes the described first mode base pin selection of described the 4th current controller and described the second model selection pin be coupled to described second pin of described the 4th current controller.
14. light emitting diode illuminating apparatus as claimed in claim 10, is characterized in that, described the 4th current setting value is greater than described the first current setting value, described the second current setting value and described the 3rd current setting value.
15. light emitting diode illuminating apparatus as claimed in claim 10, is characterized in that,
When cross-pressure on described the first pin and described second pin of described the 4th current controller is greater than a predetermined value, described the 4th current controller is closes.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
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| US201361761666P | 2013-02-06 | 2013-02-06 | |
| US61/761,666 | 2013-02-06 | ||
| US14/149,838 | 2014-01-08 | ||
| US14/149,838 US9013109B2 (en) | 2013-02-06 | 2014-01-08 | Light-emitting diode lighting device with adjustable current settings and switch voltages |
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| CN103974505A true CN103974505A (en) | 2014-08-06 |
| CN103974505B CN103974505B (en) | 2016-05-04 |
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