CN103517489B - Driver for lighting device and the lighting device with the driver - Google Patents
Driver for lighting device and the lighting device with the driver Download PDFInfo
- Publication number
- CN103517489B CN103517489B CN201210200466.7A CN201210200466A CN103517489B CN 103517489 B CN103517489 B CN 103517489B CN 201210200466 A CN201210200466 A CN 201210200466A CN 103517489 B CN103517489 B CN 103517489B
- Authority
- CN
- China
- Prior art keywords
- partial pressure
- branch road
- pressure branch
- driver
- output end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Rectifiers (AREA)
Abstract
The present invention relates to a kind of driver for lighting device（100）, including：It is connected to the rectifier bridge of power supply（1）；It is connected to rectifier bridge（1）Output end power factor correction unit（2）；And control unit（3）, control unit（3）Detection comes from rectifier bridge（1）Output end input voltage（Vin）And from power factor correction unit（2）Output end output voltage（Vo）, wherein, driver（100）Also include being connected to rectifier bridge（1）Output end current compensation unit（4）, control unit（3）To input voltage（Vin）And output voltage（Vo）It is compared, works as input voltage（Vin）Less than output voltage（Vo）When, control unit（3）Control electric current compensating unit（4）Compensation electric current is provided（Icom）.A kind of moreover, it relates to driver with the above-mentioned type（100）Lighting device.
Description
Technical field
The present invention relates to a kind of driver for lighting device.Moreover, it relates to a kind of have the above-mentioned type
Driver lighting device.
Background technology
In recent years, LED light device is being promoted rapidly as a kind of energy saving and environment friendly illuminator, is widely used in readding
Read lamp, flashlight, directing light of automobile, baby spot, label, building profile and dome illumination, portable flash lamp, medical treatment photograph
The fields such as bright and decorative illumination lamp.The Switching Power Supply of AC/DC converters in the driver of current LED light device is logical
Over commutation circuit is connected with power network, and its input rectifying wave filter is typically made up of bridge rectifier and filter condenser, and the two is equal
Belong to non-linear element.Due to the presence of Large Copacity filter condenser so that the angle of flow of commutation diode becomes very narrow, only
It could be turned near the peak value of AC-input voltage, cause AC input current to produce serious distortion, be changed into spike.This
Substantial amounts of harmonic distortion is contained in kind current waveform, not only power network is polluted, also results in the wattful power exported after filtering
Rate significantly reduces, and power factor is greatly reduced.Therefore, the power factor of the driver of LED light device how is improved, and is dropped
Low total harmonic distortion turns into an important problem.
It is total humorous in the buck-type power factor correction circuit of driver, or even in active power factor correction circuit
Wave distortion is limited by the relation between input voltage and output voltage.Input voltage is sinusoidal waveform.Its value is from 0 to most
Greatly.When the input voltage is lower than the output voltage, reduction voltage circuit does not work and output current is zero in the period.Fig. 1 shows
Input voltage vin, the graph of a relation that output voltage Vo and input current Iin are changed over time are gone out.It is electric when being inputted in time point t1
When pressure is equal to output voltage, input current zero.Output voltage is higher, and the t1 times are longer and total harmonic distortion is higher.Cause
Cause high THD for longer t1, if some electric currents are added between t0 and t1, then be able to may obtain less
THD。
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of driver for lighting device, the driver has
Relatively low total harmonic distortion and higher power factor.In addition, the invention also provides a kind of driver with the above-mentioned type
Lighting device.
First purpose of the present invention is achieved in by a kind of driver for lighting device, i.e. the driver bag
Include：It is connected to the rectifier bridge of power supply；It is connected to the power factor correction unit of the output end of rectifier bridge；And control unit, should
The input voltage of output end of the control unit detection from rectifier bridge and output end from power factor correction unit it is defeated
Go out voltage, wherein driver also includes the current compensation unit for being connected to the output end of rectifier bridge, and control unit is to input voltage
It is compared with output voltage, when the input voltage is lower than the output voltage, control unit control electric current compensating unit provides compensation
Electric current.It is less than the stage of output voltage in input voltage, compensation electric current can be automatically provided according to the driver of the present invention, so as to
Obtain relatively low total harmonic distortion and higher power factor.
Preferably, control unit includes：First control output end, the first control for output control current compensation unit
Signal processed；First detection input, for detecting input voltage；And second detection input, for detecting output voltage.Control
Unit processed can be commercially available with any type of control chip compared with control function.The present invention's
In design, without being the other control unit of increase for control electric current compensating unit, current compensation unit can with power because
Number correction unit is used in conjunction with same control unit, and this largely reduces the manufacture of the driver according to the present invention
Cost.
Itd is proposed according to the preferable design of the present invention, when input voltage is less than output voltage, current compensation
Unit provides the compensation electric current with the waveform consistent with the waveform of input voltage.Such as input voltage is sine wave, therefore mend
It is also sine wave to repay electric current.
Itd is proposed according to another preferable design of the present invention, be less than the stage of threshold voltage, electricity in input voltage
Flow compensating unit and the first compensation electric current with the waveform consistent with the waveform of input voltage is provided, and be higher than in input voltage
Threshold voltage simultaneously provides constant second and compensates electric current less than the stage of output voltage, current compensation unit, wherein, threshold voltage
Less than output voltage.In present design, such as input voltage is sine wave, then is provided just before threshold voltage is reached
The compensation electric current of string waveform, constant compensation electric current is provided after more than threshold voltage.
Preferably, current compensation unit includes：First partial pressure branch road；Second partial pressure branch road；And the first transistor, its
The working electrode of middle the first transistor is connected to the output end of rectifier bridge, the reference electricity of the first transistor by the first partial pressure branch road
Pole is grounded, and the coordination electrode of the first transistor is connected to the first control output end, and one end of the second partial pressure branch road is grounded, separately
One end is connected to the intermediate node between the coordination electrode of the first transistor and the first control output end.In the design side of the present invention
In case, when input voltage is less than output voltage, the first transistor is switched on, so that by current compensation unit in rectifier bridge
Path is formed between output end and ground, due to producing electric current in the path, so as to draw high the output end output in rectifier bridge
Electric current, and then reduce total harmonic distortion.
Advantageously, the first partial pressure branch road includes at least one first resistor, and the second partial pressure branch road includes at least one the
Two resistance.These resistance are divider resistance, and a resistance or multiple resistance can be used in each partial pressure branch road, this
Determined according to the size of the input voltage of driver.
Optionally, current compensation unit includes the first partial pressure branch road；Second partial pressure branch road；3rd partial pressure branch road；First
Transistor；Second transistor；And first diode, wherein, one end of the first partial pressure branch road is connected to the output end of rectifier bridge,
The coordination electrode of second transistor is connected to the middle knot between the other end of the first partial pressure branch road and the negative pole of the first diode
Point, the plus earth of the first diode, the working electrode of second transistor are connected to the output end of rectifier bridge, second transistor
Reference electrode is connected to the working electrode of the first transistor by the 3rd partial pressure branch road, and the coordination electrode of the first transistor is connected to
First control output end, one end ground connection of the second partial pressure branch road, the other end are connected to the coordination electrode and first of the first transistor
Intermediate node between control output end.In present design, the compensation electric current and constant of sine wave is provided by stages
Compensate electric current.
Advantageously, the first partial pressure branch road includes at least one first resistor, and the second partial pressure branch road includes at least one the
Two resistance, the 3rd partial pressure branch road include at least one 3rd resistor.These resistance are divider resistance, and in each partial pressure branch road
In can use a resistance or multiple resistance, this is determined according to the size of the input voltage of driver.
It is further favourable that the first diode is Zener diode, and the Zener voltage of the first diode limits threshold
Threshold voltage.
It is proposed, according to the invention, that driver also includes：4th partial pressure branch road；5th partial pressure branch road；6th partial pressure branch road with
And the 7th partial pressure branch road, wherein the first detection input is connected to the output end of rectifier bridge by the 4th partial pressure branch road, the 5th point
One end of pressure branch road is connected to intermediate node between the first detection input and the 4th partial pressure branch road, the 5th partial pressure branch road it is another
One end is grounded, and the second detection input is connected to the output end of power factor correction unit by the 6th partial pressure branch road, and the
One end of seven partial pressure branch roads is connected to the intermediate node between the second detection input and the 6th partial pressure branch road, the 7th partial pressure branch road
The other end ground connection.Control unit gathers input voltage and output voltage by above-mentioned partial pressure branch road.
Advantageously, the 4th partial pressure branch road includes at least one 4th resistance, and the 5th partial pressure branch road includes at least one the
Five resistance, the 6th partial pressure branch road include at least one 6th resistance, and the 7th partial pressure branch road includes at least one 7th resistance.These
Resistance is divider resistance, and a resistance or multiple resistance can be used in each partial pressure branch road, and this is according to driver
The size of input voltage determine.
It may further be preferable that control unit also includes the second control output end, for output control PFC
Second control signal of unit.
Advantageously, driver also includes control signal amplifying circuit, control signal amplifying circuit amplification the second control letter
Number and driving power factor correcting unit.
It is further favourable that power factor correction unit is buck-type power factor correction circuit.
Another object of the present invention realized by a kind of lighting device, the lighting device include the above-mentioned type driver and
The luminescence component driven by the driver.Preferably, the luminescence component is LED luminescence components.LED luminescence components have luminous
The advantages that efficiency high, long lifespan and energy-conserving and environment-protective.
If it should be understood that especially indicated without other, the feature of different exemplary embodiment described herein
It can be bonded to each other.
Brief description of the drawings
Accompanying drawing forms the part of this specification, is used to help further understand the present invention.These accompanying drawings illustrate this hair
Bright embodiment, and together with specification be used for illustrate the present invention principle.Identical part identical label in the accompanying drawings
Represent.Shown in figure：
Fig. 1 is the graph of a relation that input voltage, output voltage and input current change over time；
Fig. 2 is the theory diagram according to the driver of the present invention；
Fig. 3 is the circuit diagram according to the first embodiment of the driver of the present invention；
Fig. 4 is the circuit diagram according to the second embodiment of the driver of the present invention；
Fig. 5 is the compensation electric current of sine wave and the graph of a relation changed over time of input voltage；
Fig. 6 is that have sinusoidal waveform portion and the compensation electric current of constant portion and the relation changed over time of input voltage
Figure.
Embodiment
Fig. 2 shows the theory diagram of the driver 100 according to the present invention.It can be seen that driver 100 includes：Even
It is connected to the rectifier bridge 1 of power supply；It is connected to the power factor correction unit 2 of the output end of rectifier bridge 1；And control unit 3, control
Unit 3 detects the input voltage vin of the output end from rectifier bridge 1 and the output end from power factor correction unit 2
Output voltage Vo, wherein, driver 100 also includes the current compensation unit 4 for being connected to the output end of rectifier bridge 1, control unit 3
Input voltage vin and output voltage Vo are compared, when input voltage vin is less than output voltage Vo, control unit 3 controls
Current compensation unit 4 provides compensation electric current Icom.That is, when input voltage vin is less than output voltage Vo, current compensation
Unit 4 makes to form path between the output end of rectifier bridge 1 and ground, and generation compensation electric current Icom, whole so as to improve in the path
The electric current of the output end output of bridge 1 is flowed, to reduce total harmonic distortion.
Because the design of the present invention is to the improvement that existing driver is carried out in the prior art, therefore wherein
Component, such as rectifier bridge 1, power factor correction unit 2, control unit 3 etc. concrete structure no longer this be described, on
Stating component can be readily available on commercial market.In figs. 3 and 4 the concrete structure only to current compensation unit 4 and
The annexation of current compensation unit 4 and other components carries out exemplary description.
Fig. 3 shows the circuit diagram of the first embodiment of the driver 100 according to the present invention.It can be seen that control is single
Member 3 includes：First control output end 31, the first control signal S_1 for output control current compensation unit 4；Second control
Output end 32, the second control signal S_2 for power factor correction unit described in output control 2；First detection input 33,
For detecting input voltage vin；And second detection input 34, for detecting output voltage Vo.
In addition, current compensation unit 4 includes：First partial pressure branch road 41；Second partial pressure branch road 42；And the first transistor
Q1, wherein the first transistor Q1 working electrode are connected to the output end of rectifier bridge 1, first crystal by the first partial pressure branch road 41
Pipe Q1 reference electrode ground connection, and the first transistor Q1 coordination electrode is connected to the first control output end 31, the second partial pressure
One end ground connection of branch road 42, during the other end is connected between the first transistor Q1 coordination electrode and the first control output end 31
Between node.In the present embodiment, the first partial pressure branch road 41 includes three first resistors R1, R1 ', R1 " being serially connected, the
Two partial pressure branch roads 42 include a second resistance R2.However, the quantity of above-mentioned resistance is not fixed, according to the requirement of design
The resistance of varying number can be provided with, to obtain different impedances.
In addition, driver 100 also includes：4th partial pressure branch road 44；5th partial pressure branch road 45；6th partial pressure branch road 46 and
7th partial pressure branch road 47, wherein the first detection input 33 is connected to the output end of rectifier bridge 1 by the 4th partial pressure branch road 44, the
One end of five partial pressure branch roads 45 is connected to the intermediate node between the first detection input 33 and the 4th partial pressure branch road 44, the 5th point
The other end ground connection of branch road 45 is pressed, the second detection input 34 is connected to power factor correction unit by the 6th partial pressure branch road 46
2 output end, and one end of the 7th partial pressure branch road 47 is connected between the second detection input 34 and the 6th partial pressure branch road 46
Intermediate node, the other end ground connection of the 7th partial pressure branch road 47, wherein the 4th partial pressure branch road 44 includes three the 4th resistance R4,
R4 ', R4 ", the 5th partial pressure branch road 45 include a 5th resistance R5, and the 6th partial pressure branch road 46 includes a 6th resistance R6, the
Seven partial pressure branch roads 47 include a 7th resistance R7.
At this it is emphasized that the quantity of resistance is not fixed in each partial pressure branch road, according to wanting for design
The resistance of varying number can be provided with by asking, to obtain different impedances.
In the first embodiment, control unit 3 is by being connected to the 4th resistance R4, R4 ' of the first detection input 33,
R4 " and the 5th resistance R5 collection input voltage vins, and by being connected to the 6th resistance R6 and the 7th of the second detection input 34
Resistance R7 gathers output voltage Vo, and then input voltage vin and output voltage Vo are compared, and control unit 3 is according to comparing
As a result send the second control signal S_2 control power factor correction unit 2, by output voltage Vo power factor controlling compared with
High desired value.When input voltage vin is less than output voltage Vo, control unit 3 sends the first control signal S_1, with control
The first transistor Q1 is connected, so as to form the path by current compensation unit 4 between the output end and ground of rectifier bridge 1, at this
Compensation electric current Icom is produced in path, and then improves the electric current of the output end output of rectifier bridge 1, and reduces total harmonic distortion.
When the first transistor Q1 is connected, input voltage vin is added on first resistor R1, R1 ', R1 " and the first transistor Q1.At this moment the portion
Parallel circuit is relative to an equivalent resistance Requ.Requ=R1+R1 '+R1 "+Rds (on) Q1, wherein Rds (on) Q1 is first brilliant
Equivalent resistance when body pipe Q1 is turned on.Thus, the compensation electric current of acquisition is：
Figure 5 illustrates caused by the current compensation unit 4 according to the driver 100 of the first embodiment of the present invention just
The compensation electric current Icom of string waveshape and the graph of a relation changed over time of input voltage vin.It can be seen that the compensation electric current
Icom is directly proportional to input voltage vin, and because input voltage vin is sine wave, therefore it is also sine wave to compensate electric current Icom.
Fig. 4 shows the circuit diagram of the second embodiment of the driver 100 according to the present invention.Driving in second embodiment
Device 100 and the difference in the structure for differing only in current compensation unit 4 of the driver 100 in first embodiment.From figure
In it is visible, current compensation unit 4 includes the first partial pressure branch road 41；Second partial pressure branch road 42；3rd partial pressure branch road 43；First crystal
Pipe Q1；Second transistor Q2；And the first diode D1, wherein, one end of the first partial pressure branch road 41 is connected to the defeated of rectifier bridge 1
Go out end, second transistor Q2 coordination electrode be connected to the first partial pressure branch road 41 the other end and the first diode D1 negative pole it
Between intermediate node, the first diode D1 plus earth, second transistor Q2 working electrode is connected to the output of rectifier bridge 1
End, second transistor Q2 reference electrode are connected to the first transistor Q1 working electrode by the 3rd partial pressure branch road 43, and first
Transistor Q1 coordination electrode is connected to the first control output end 31, one end ground connection of the second partial pressure branch road 42, other end connection
Intermediate node to the first transistor Q1 coordination electrode and the first control output end 31, wherein, the first partial pressure branch road 41
Including three first resistors being serially connected R1, R1 ', R1 ", the second partial pressure branch road 42 includes a second resistance R2, the
Three partial pressure branch roads 43 include a 3rd resistor R3.Equally, the quantity of the resistance in each partial pressure branch road is not fixed, root
The resistance of varying number can be provided with according to the requirement of design, to obtain different impedances.In addition, the first diode D1 is Zener
Diode.
In the second embodiment shown in Fig. 4, control unit 3 is by being connected to the 4th resistance of the first detection input 33
R4, R4 ', R4 " and the 5th resistance R5 collection input voltage vins, and by being connected to the 6th resistance of the second detection input 34
R6 and the 7th resistance R7 collection output voltage Vo, are then compared, control unit 3 to input voltage vin and output voltage Vo
Second control signal S_2 control power factor correction units 2 are sent according to comparative result, by power factor controlling higher
Desired value.
Shown in reference picture 6 have sinusoidal waveform portion and constant portion compensation electric current Icom and input voltage vin with
The graph of a relation of time change is visible, and when input voltage vin is less than output voltage Vo, control unit 3 sends the first control signal
S_1, to control the first transistor Q1 to connect, so as to be formed between the output end and ground of rectifier bridge 1 by current compensation unit 4
Path.However, in input voltage vin less than the threshold voltage Vz limited by the first diode D1 Zener voltage and less than second
Transistor Q2 grid source threshold voltage Vgs stage, second transistor Q2 shut-offs, and then flow through 3rd resistor R3 electric current
IQ1 very littles, it is assumed that second transistor Q2 base current is Ig, then be in the compensation electric current Icom in this stage：Icom=
IQ1-Ig, because base current Ig is much smaller than the electric current IQ1 for flowing through 3rd resistor R3, so the compensation electric current Icom in the stage is about
Due to IQ1.In grid source threshold voltage Vgs of the input voltage vin less than threshold voltage Vz and more than second transistor Q2 rank
Section, second transistor Q2 are connected, and now second transistor Q2 grid voltage Vg is equal to input voltage vin, therefore flows through the 3rd
Resistance R3 electric current IQ1 is：In this stage, grid voltage Vg changes with input voltage vin, therefore electricity
Flow IQ1 with input voltage to change and change, so as to obtain the first of sinusoidal waveform the compensation electric current Icom1.In input voltage vin height
In threshold voltage Vz and stage less than output voltage Vo, second transistor Q2 grid voltage by clamped in threshold voltage Vz,
Thus the electric current IQ1 for flowing through 3rd resistor R3 is：Because threshold voltage Vz is fixed
, therefore electric current IQ1 is also constant, so as to obtain the second constant compensation electric current Icom2.
In addition, in two embodiments shown in figs. 3 and 4 respectively, driver 100 also includes control signal amplification electricity
Road 5, the control signal amplifying circuit 5 amplify the second control signal S_2 and driving power factor correcting unit 2, and power because
Number correction unit 2 is buck-type power factor correction circuit.
According to the design of the present invention, control unit 3 it is not absolutely required to enter input voltage vin and output voltage Vo
Row compares, can also be by input voltage vin and compared with the value of input voltage Vo relatively.In addition, first is brilliant
Body pipe Q1 and second transistor Q2 can be selected from one kind in metal-oxide-semiconductor, IGCT, relay and triode.
In addition, it needs to be emphasized that, two embodiments described above are only schematical, for illustrating herein
The design principle of the present invention, it should not produce limitation to the design principle of the present invention.According to the design of the present invention, electric current is mended
The compensation electric current of sinusoidal waveform can not only be produced by repaying unit 4, constant compensation electric current, can also produce the compensation of other waveforms
Electric current, or the combination of the compensation electric current of different wave and constant compensation electric current.
Although being shown in which and describing specific embodiment, it will be appreciated by one skilled in the art that
On the premise of without departing substantially from the scope of the present invention, various optional and/or equivalent embodiment can replace described and illustrated
Specific embodiment.The application is intended to cover any modification or deformation of specific embodiment discussed herein.
Reference number
1 rectifier bridge
2 power factor correction units
3 control units
31 first control output ends
32 second control output ends
33 first detection inputs
34 second detection inputs
4 current compensation units
41 first partial pressure branch roads
42 second partial pressure branch roads
43 the 3rd partial pressure branch roads
44 the 4th partial pressure branch roads
45 the 5th partial pressure branch roads
46 the 6th partial pressure branch roads
47 the 7th partial pressure branch roads
5 control signal amplifying circuits
R1, R1 ', R1 " first resistors
R2 second resistances
R3 3rd resistors
The resistance of R4, R4 ', R4 " the 4th
The resistance of R5 the 5th
The resistance of R6 the 6th
The resistance of R7 the 7th
Equivalent resistance when Rds (on) Q1 Q1 are turned on
Requ equivalent resistances
The diodes of D1 first
Q1 the first transistors
Q2 second transistors
Vin input voltages
Vo output voltages
Vz threshold voltages
Icom compensates electric current
Icom1 first compensates electric current
Icom2 second compensates electric current
Ig Q2 base current
IQ1 flows through R3 electric current
Vgs Q2 grid source threshold voltage
Vg Q2 grid voltage
Vz threshold voltages
The control signals of S_1 first
The control signals of S_2 second
100 drivers
Claims (17)
1. a kind of driver (100) for lighting device, including：It is connected to the rectifier bridge (1) of power supply；It is connected to the rectification
The power factor correction unit (2) of the output end of bridge (1)；And control unit (3), described control unit (3) detection come from institute
State the defeated of the input voltage (Vin) of the output end of rectifier bridge (1) and the output end from the power factor correction unit (2)
Go out voltage (Vo), it is characterised in that the driver (100) also includes the electric current for being connected to the output end of the rectifier bridge (1)
Compensating unit (4), described control unit (3) are compared to the input voltage (Vin) and the output voltage (Vo), work as institute
When stating input voltage (Vin) and being less than the output voltage (Vo), described control unit (3) controls the current compensation unit (4)
Compensation electric current (Icom) is provided, wherein, the current compensation unit makes to be formed between the output end of the rectifier bridge and ground
Path, the compensation electric current is produced in the path.
2. driver (100) according to claim 1, it is characterised in that described control unit (3) includes：First control
Output end (31), the first control signal (S_1) for current compensation unit (4) described in output control；First detection input
(33), for detecting the input voltage (Vin)；And second detection input (34), for detecting the output voltage
(Vo)。
3. driver (100) according to claim 2, it is characterised in that in the input voltage (Vin) less than described defeated
When going out voltage (Vo), the current compensation unit (4) is provided with the waveform consistent with the waveform of the input voltage (Vin)
The compensation electric current (Icom).
4. driver (100) according to claim 2, it is characterised in that in the input voltage (Vin) less than threshold value electricity
Press the stage of (Vz), the current compensation unit (4) is provided with the waveform consistent with the waveform of the input voltage (Vin)
First compensation electric current (Icom1)；And higher than the threshold voltage (Vz) and it is less than the output in the input voltage (Vin)
The stage of voltage (Vo), the current compensation unit (4) provide the second constant compensation electric current (Icom2), wherein, the threshold value
Voltage (Vz) is less than the output voltage (Vo).
5. driver (100) according to claim 3, it is characterised in that the current compensation unit (4) includes：First point
Press branch road (41)；Second partial pressure branch road (42)；And the first transistor (Q1), wherein the work electricity of the first transistor (Q1)
Pole is connected to the output end of the rectifier bridge (1), the ginseng of the first transistor (Q1) by the first partial pressure branch road (41)
Electrode ground connection is examined, and the coordination electrode of the first transistor (Q1) is connected to first control output end (31), it is described
One end ground connection of second partial pressure branch road (42), the other end are connected to the coordination electrode and described first of the first transistor (Q1)
Intermediate node between control output end (31).
6. driver (100) according to claim 5, it is characterised in that the first partial pressure branch road (41) is included at least
One first resistor (R1, R1 ', R1 "), the second partial pressure branch road (42) include at least one second resistance (R2).
7. driver (100) according to claim 4, it is characterised in that the current compensation unit (4) includes first point
Press branch road (41)；Second partial pressure branch road (42)；3rd partial pressure branch road (43)；The first transistor (Q1)；Second transistor (Q2)；With
And first diode (D1), wherein, one end of the first partial pressure branch road (41) is connected to the output end of the rectifier bridge (1),
The coordination electrode of the second transistor (Q2) is connected to the other end of the first partial pressure branch road (41) and the one or two pole
Intermediate node between the negative pole of pipe (D1), the plus earth of first diode (D1), the second transistor (Q2)
Working electrode is connected to the output end of the rectifier bridge (1), and the reference electrode of the second transistor (Q2) passes through the described 3rd
Partial pressure branch road (43) is connected to the first transistor (Q1) working electrode, and the coordination electrode of the first transistor (Q1) connects
It is connected to first control output end (31), one end ground connection of the second partial pressure branch road (42), the other end is connected to described the
Intermediate node between the coordination electrode of one transistor (Q1) and first control output end (31).
8. driver (100) according to claim 7, it is characterised in that the first partial pressure branch road (41) is included at least
One first resistor (R1, R1 ', R1 "), the second partial pressure branch road (42) include at least one second resistance (R2), and described
Three partial pressure branch roads (43) include at least one 3rd resistor (R3).
9. driver (100) according to claim 7, it is characterised in that first diode (D1) is the pole of Zener two
Pipe.
10. driver (100) according to claim 9, it is characterised in that the Zener voltage of first diode (D1)
Limit the threshold voltage (Vz).
11. the driver (100) according to any one of claim 2 to 10, it is characterised in that the driver (100)
Also include：4th partial pressure branch road (44)；5th partial pressure branch road (45)；6th partial pressure branch road (46) and the 7th partial pressure branch road
(47), wherein first detection input (33) is connected to the rectifier bridge (1) by the 4th partial pressure branch road (44)
Output end, one end of the 5th partial pressure branch road (45) are connected to first detection input (33) and the 4th partial pressure branch
Intermediate node between road (44), the other end ground connection of the 5th partial pressure branch road (45), second detection input (34)
The output end of the power factor correction unit (2), and described 7th point are connected to by the 6th partial pressure branch road (46)
One end of pressure branch road (47) is connected to the centre between second detection input (34) and the 6th partial pressure branch road (46)
Node, the other end ground connection of the 7th partial pressure branch road (47).
12. driver (100) according to claim 11, it is characterised in that the 4th partial pressure branch road (44) is included extremely
Few 4th resistance (R4, R4 ', R4 "), the 5th partial pressure branch road (45) includes at least one 5th resistance (R5), described
6th partial pressure branch road (46) includes at least one 6th resistance (R6), and the 7th partial pressure branch road (47) includes at least one 7th
Resistance (R7).
13. the driver (100) according to any one of claim 2 to 10, it is characterised in that described control unit (3)
Also include the second control output end (32), the second control signal (S_ for power factor correction unit described in output control (2)
2)。
14. driver (100) according to claim 13, it is characterised in that the driver (100) also includes control letter
Number amplifying circuit (5), the control signal amplifying circuit (5) amplify second control signal (S_2) and drive the power
Factor correcting unit (2).
15. driver (100) according to any one of claim 1 to 10, it is characterised in that the PFC
Unit (2) is buck-type power factor correction circuit.
16. a kind of lighting device, it is characterised in that the lighting device is included according to any one of claim 1 to 15
Driver (100) and by the driver (100) drive luminescence component.
17. lighting device according to claim 16, it is characterised in that the luminescence component is LED luminescence components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210200466.7A CN103517489B (en) | 2012-06-14 | 2012-06-14 | Driver for lighting device and the lighting device with the driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210200466.7A CN103517489B (en) | 2012-06-14 | 2012-06-14 | Driver for lighting device and the lighting device with the driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103517489A CN103517489A (en) | 2014-01-15 |
| CN103517489B true CN103517489B (en) | 2017-12-26 |
Family
ID=49899267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210200466.7A Expired - Fee Related CN103517489B (en) | 2012-06-14 | 2012-06-14 | Driver for lighting device and the lighting device with the driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103517489B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337485B (en) * | 2014-06-03 | 2019-11-26 | 朗德万斯公司 | Circuit of power factor correction, LED driving circuit and lighting apparatus |
| CN105282900B (en) * | 2014-06-19 | 2017-11-17 | 立锜科技股份有限公司 | The driving method of light emitting element driving circuit and light-emitting element circuit |
| TWI537924B (en) * | 2014-09-01 | 2016-06-11 | 友達光電股份有限公司 | Driving method of light emitting diode |
| CN105353659B (en) * | 2015-11-27 | 2018-05-08 | 宁波福尔达智能科技有限公司 | Roof lamp module heavy load control circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014920A (en) * | 2004-06-28 | 2007-08-08 | 国际整流器公司 | High frequency partial boost power factor correction control circuit and method |
| CN100593275C (en) * | 2006-09-12 | 2010-03-03 | 深圳Tcl新技术有限公司 | Power factor correction circuit |
| KR101029822B1 (en) * | 2009-09-16 | 2011-04-15 | 김대섭 | Power Supply Apparatus For Light-Emitting Diode |
-
2012
- 2012-06-14 CN CN201210200466.7A patent/CN103517489B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103517489A (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103858521B (en) | LED illumination device | |
| JP5629191B2 (en) | Power supply | |
| CN101636021B (en) | LED constant current driving circuit | |
| CN104578799B (en) | Switching power supply system and control circuit and control method thereof | |
| CN107529242B (en) | A kind of LED drive circuit and method of equalization efficiency and power factor | |
| CN103503563A (en) | Dimmable LED driver and method for controlling same | |
| CN103428969A (en) | Linear constant current light-emitting diode (LED) driving circuit and LED lamp | |
| CN103648202A (en) | Active power factor correction control circuit, chip and LED (Light Emitting Diode) drive circuit | |
| CN201813599U (en) | LED (Light-Emitting Diode) dimmer power | |
| CN104904314B (en) | Reduce the LED driver circuit of Observable optical flicker using flyback converter by reducing rectification AC power network ripple | |
| CN102014557A (en) | LED dimming power supply | |
| CN103517489B (en) | Driver for lighting device and the lighting device with the driver | |
| CN106961768B (en) | A kind of LED linear constant-current drive circuit of active valley-fill circuit mode | |
| CN205793482U (en) | A kind of zero-frequency dodges light modulation filament circuit for lamp | |
| TW201410066A (en) | DC dimming LED driving circuit | |
| CN104780694B (en) | A kind of LED touch dimmers constant-current driving power supply | |
| CN106358342A (en) | Dimming driving circuit | |
| CN106163037A (en) | LED driving circuit and light emitting diode lighting equipment | |
| WO2018090478A1 (en) | Linear constant-current led drive circuit for eliminating current ripple, and led light-emitting device | |
| CN104703346A (en) | LED driver | |
| CN104363679A (en) | Dynamic voltage control-based single-stage PFC (power factor correction) flyback LED driving source | |
| CN206164934U (en) | Linear constant -current drive circuit of LED and LED lighting device | |
| CN205726555U (en) | The light-source system that LED load light source identifies automatically | |
| CN204598401U (en) | A kind of LED touch dimmer power supply | |
| CN104302060B (en) | A kind of LED drive power control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20190614 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |