CN206042434U - Lighting drive circuit and lighting system - Google Patents
Lighting drive circuit and lighting system Download PDFInfo
- Publication number
- CN206042434U CN206042434U CN201620900719.5U CN201620900719U CN206042434U CN 206042434 U CN206042434 U CN 206042434U CN 201620900719 U CN201620900719 U CN 201620900719U CN 206042434 U CN206042434 U CN 206042434U
- Authority
- CN
- China
- Prior art keywords
- current
- circuit
- amplifier
- value
- output
- 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.)
- Withdrawn - After Issue
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/31—Phase-control circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/357—Driver circuits specially adapted for retrofit LED light sources
- H05B45/3574—Emulating the electrical or functional characteristics of incandescent lamps
- H05B45/3577—Emulating the dimming characteristics, brightness or colour temperature of incandescent lamps
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a lighting drive circuit and lighting system, the utility model discloses an angle of flow detection circuitry can obtain the angle of flow of input and can judge whether insert triac dimmer, not only can not have under triac dimmer's the condition, and output current reaches the effect of constant current under different input voltage, having under triac dimmer's the condition, adjusting average output electric current reference value, make it change along with the change of the angle of flow, perhaps, under the condition that keeps switching on, output current's instantaneous value is invariable to under the different angles of flow, its average output electric current certainly will change, in order to realize silicon controlled rectifier. Consequently, this scheme can compatiblely have or not two kinds of condition of triac dimmer, and is compatible high, through adding the bleeder circuit, prevent that the silicon controlled rectifier from turn -offing because of output off current LOW takes place the mistake in the maintenance current to the output current of assurance system is stable, prevents the scintillation.
Description
Technical field
The utility model is related to electric and electronic technical field, and in particular to a kind of illumination driving circuit and illuminator.
Background technology
In illumination driving circuit, LED is conventional lighting source, by taking LED drive circuit as an example, prior art it is linear
LED drive circuit is simple due to circuit, and low cost is widely used in LED drive circuit.But LED is replacing conventional incandescent
When, not only need compatible silicon controlled light modulator, and its line regulation (i.e. LED current is with the rate of change of input voltage)
There are certain requirements.
As shown in figure 1, be the linear LED drive circuit schematic diagram of prior art, sampling resistor R00 sampling flow through LED current,
Current sampling data and internal reference voltage VREF0 on amplifier U00 comparison resistance R00, is made by controlling the grid of adjustment pipe M00
The current sampling data for obtaining LED is equal to VREF0, i.e., so that LED current is equal to VREF0/R00.
There is following technical problem in the linear LED drive circuit of above prior art：When input voltage changes, output electricity
Stream can also change, i.e., its line regulation is poor.And access controllable silicon dimmer in the case of, when LED current instantaneous value it is little
When silicon controlled maintains electric current, controllable silicon dimmer can occur shut-off by mistake, cause LED that flicker occurs.Therefore, prior art
The requirement of higher line regulation is unable to reach, and is difficult to compatible different types of controllable silicon dimmer.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of raising line regulation and can prevent because of load electricity
Stream causes the illumination driving circuit and illuminator of shut-off by mistake less than the maintaining electric current of light modulator, deposits to solve prior art
The requirement for being unable to reach higher line regulation, and be difficult to the technology of compatible different types of controllable silicon dimmer and ask
Topic.
Technical solution of the present utility model is to provide a kind of illumination driving circuit of following structure, AC power Jing
Rectifier bridge obtains input voltage to load supplying, and the drive circuit includes constant-current control circuit, described constant-current control circuit
The electric current of load is flowed through by sampling, obtains characterizing the output current sampled value of output current instantaneous value, and according to the output
The reference value of current sampling data and average output current, in the case where the reference value of the average output current keeps constant,
Regulation flows through the electric current of load, realizes output constant current；
In the case of without controllable silicon dimmer, maximum conduction angle is in, the reference value of average output current keeps permanent
It is fixed；In the case that between AC power and rectifier bridge, controllable silicon dimmer is set, the reference value of described average output current
Change with the angle of flow change of drive circuit, to realize light modulation.
Preferably, described constant-current control circuit includes turning on angle detection circuit, described conducting angle detection circuit according to
The size of the size and/or output current sampled value of the input voltage, obtains the angle of flow of the input of drive circuit, output with
The reference value of the corresponding average output current of the angle of flow, the reference value and the angle of flow of described average output current
Variation tendency is identical.
Preferably, the drive circuit also includes leadage circuit, and described leadage circuit is sampled the defeated of the drive circuit
Enter electric current, obtain characterizing the input current sampled value of input current instantaneous value, by the input current sampled value and sign target
The bus current reference value of input current is made comparisons calculation process, so that electric current is equal to the target input current, it is negative flowing through
When the electric current of load is more than the target input current, the leakage current for controlling the leadage circuit is null value.
Preferably, described constant-current control circuit also includes the first amplifier, the second amplifier and the first electric current adjustment pipe, described
The first end of the first amplifier receive described output current sampled value, its second end receives the reference value of average output current,
The output end of the first amplifier is connected to the second end of the second amplifier, while the output end of the first amplifier is connected with the first filtered electrical
Hold；The first end of second amplifier receives described output current sampled value, and the output end of the second amplifier is adjusted with the first electric current
The control end connection of homogeneous tube.
Preferably, described leadage circuit includes that the adjustment of the second electric current is managed and the 3rd amplifier, the first of the 3rd amplifier
End receives the input current sampled value for characterizing input current instantaneous value, and its second end receives the mother for characterizing target input current
Line current reference value, the control end that its output end adjusts pipe with the second electric current are connected, and second electric current adjusts the first end of pipe
The high cold end of input voltage is connected to the second end.
Preferably, the drive circuit also includes that ripple eliminates circuit, and described ripple eliminates circuit and load in series, leads to
Cross the ripple elimination circuit and adjust its constant pressure with the common port of load, so that load two ends constant pressure, eliminates circuit by ripple
Voltage ripple in carry load.
Preferably, described ripple eliminates circuit to be included the first adjustment pipe and its adjusts pipe control circuit, described first
Adjustment pipe and load in series, the adjustment pipe control circuit is according to the first adjustment pipe and the public terminal voltage and the common port of load
The reference value of voltage, adjusts the control end of the first adjustment pipe so that the public terminal voltage is equal to the public terminal voltage
Reference value.
Preferably, described adjustment pipe control circuit also includes four high guaily unit and the 5th amplifier, described four high guaily unit
First end receives the reference value of the public terminal voltage, and its second end receives described public terminal voltage, its output end and the 5th
The second end connection of amplifier, while the output end of four high guaily unit is connected with the second filter capacitor；The first end of the 5th amplifier
Reception flows through the current sampling data of the electric current of the first adjustment pipe, the output end of the second amplifier and the first control end for adjusting pipe
Connection.
Another technical solution of the present utility model is to provide a kind of illumination driving circuit, and AC power is rectified
Bridge obtains input voltage to load supplying, and the drive circuit includes constant-current control circuit, and described constant-current control circuit passes through
Sampling flows through the electric current of load, obtains characterizing the output current sampled value of output current instantaneous value,
In the case where detecting without controllable silicon dimmer, according to the output current sampled value and average output current
Reference value, regulation flow through the electric current of load, realize output constant current；Detect and controllable silicon is set between AC power and rectifier bridge
In the case of light modulator, according to the output current sampled value and instantaneous output current reference value, regulation flows through the electric current of load,
When controllable silicon dimmer is turned on, the output current instantaneous value for flowing through load is constant, then average output current is with the angle of flow
Change and change, to realize light modulation.
Preferably, described constant-current control circuit includes turning on angle detection circuit, described conducting angle detection circuit according to
The size of the size and/or output current sampled value of the input voltage, obtains the angle of flow of the input of drive circuit, to sentence
Disconnected whether to access controllable silicon dimmer, in the case where controllable silicon dimmer is accessed, described average output current is led with described
The variation tendency of current flow angle is identical.
Preferably, described constant-current control circuit also includes the first amplifier, the second amplifier and the first electric current adjustment pipe, described
The first end of the first amplifier receive described output current sampled value, its second end receives the reference value of average output current,
The output end of the first amplifier is connected with the first filter capacitor；The first end of second amplifier receives described output current sampling
Value, the control end that the output end of the second amplifier adjusts pipe with the first electric current are connected, and the second end of the second amplifier arranges selecting switch,
In the case where detecting without controllable silicon dimmer, the chosen switch in the second end and the output end of the first amplifier of the second amplifier connect
Connect, in the case where controllable silicon dimmer has been detected, the second end of the second amplifier disconnects the company with the output end of the first amplifier
Connect, now the second end of the second amplifier receives the reference value or other reference voltages of the average output current, in the situation
Reference value of the reference value or described other reference voltages of lower described average output current as instantaneous output current.
Preferably, the drive circuit also includes leadage circuit, and described leadage circuit is sampled the defeated of the drive circuit
Enter electric current, obtain characterizing the input current sampled value of input current instantaneous value, by the input current sampled value and sign target
The bus current reference value of input current is made comparisons calculation process, so that input current is equal to the target input current, in stream
When the electric current of Jing loads is more than the target input current, the leakage current for controlling the leadage circuit is null value.
Using circuit structure of the present utility model, compared with prior art, with advantages below：The utility model is by leading
Logical angle detection circuit can obtain the angle of flow being input into and can judge whether to access controllable silicon dimmer, not only can be do not have can
In the case of control silicon light modulator, under different input voltages, output current all reaches the effect of constant current；There is controllable silicon dimmer
In the case of, adjust described average output current reference value so as to change with the change of the angle of flow, or, keep leading
In the case of logical, the instantaneous value of output current is constant, and under the different angles of flow, its average output current certainly will occur to become
Change, to realize controllable silicon light modulation.Therefore the program compatible can whether there is two kinds of situations of controllable silicon dimmer, and compatibility is high；It is logical
Addition leadage circuit is crossed, prevents controllable silicon from shut-off by mistake occurring less than maintenance electric current because of output current, so as to ensure the defeated of system
Go out current stabilization, prevent flicker.
Description of the drawings
LED drive circuit schematic diagrams of the Fig. 1 for prior art；
Fig. 2 is the circuit structure diagram (embodiment one) of illumination driving circuit of the present utility model；
Electrical block diagrams of the Fig. 3 for leadage circuit；
Fig. 4 is a kind of circuit structure diagram that ripple eliminates circuit；
Fig. 5 is another kind of circuit structure diagram that ripple eliminates circuit；
Fig. 6 is the circuit structure diagram (embodiment two) of illumination driving circuit of the present utility model；
Fig. 7 is the circuit structure diagram (embodiment three) of illumination driving circuit of the present utility model
Fig. 8 is the circuit structure diagram (example IV) of illumination driving circuit of the present utility model.
Specific embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but the utility model is not merely
It is limited to these embodiments.The utility model covers any replacement made in spirit and scope of the present utility model, modification, equivalent
Method and scheme.
In order that the public has to the utility model thoroughly understand, in following the utility model preferred embodiment specifically
Clear concrete details, and description without these details can also understand that this practicality is new completely for a person skilled in the art
Type.
Referring to the drawings the utility model more particularly described below by way of example in the following passage.It should be noted that, accompanying drawing
Non- accurately ratio is used in the form of more simplifying and, only conveniently, lucidly to aid in illustrating the utility model
The purpose of embodiment.
With reference to shown in Fig. 2, the particular circuit configurations of illumination driving circuit embodiment of the present utility model are illustrated, and which is born
Carry by taking LED as an example, its input power is exchange input, in the case of no controllable silicon dimmer, the exchange input Jing is whole
The input voltage of direct current is exported after stream bridge U01, i.e., as the input voltage of load, in the situation that there is controllable silicon dimmer U02
Under, then controllable silicon dimmer U02 need to be set between exchange input and rectifier bridge U01.But it should be recognized that the utility model
Controllable silicon dimmer both of these case can be whether there is compatibility simultaneously.Exchange input is connected to rectifier bridge through controllable silicon dimmer U02
U01, the positive output end of rectifier bridge are connected to load anode through diode D01, and load negative terminal is logical through constant-current control circuit U03
Cross the negative output terminal that input current sample circuit is connected to rectifier bridge U01.
One end of leadage circuit U04 is connected to the common port of the positive output end of rectifier bridge U01 and diode D01, vent discharge
The other two ends of road U04 are connected respectively to the two ends of input current sample circuit (realizing by sampling resistor R01).Leadage circuit
U04 detects input current instantaneous value by input current sample circuit, and by adjusting IIN1 end current control input current winks
Duration is not less than certain value, that is, be not less than the maintenance electric current of controllable silicon dimmer.
By adding leadage circuit U04, can prevent controllable silicon from turning off by mistake, so as to ensure the outputting current steadily of system, prevent
Only there is flicker, its concrete principle will be further elaborated when will be described below leadage circuit physical circuit.Due to the present embodiment
In, constant-current control circuit realizes constant current by the way of linear regulation, so constant-current control circuit is also referred to as linear constant current
Circuit, linear constant current circuit U03 can be in the case of no controllable silicon dimmers, and under different input voltages, output current is all
Reach the effect of constant current.In the case where there is controllable silicon dimmer, described average output current reference value is adjusted so as to
The change of the angle of flow and change, corresponding average output current also changes therewith, to realize controllable silicon light modulation.Therefore program energy
Enough compatibilities whether there is two kinds of situations of controllable silicon dimmer, and compatibility is high.Therefore the program not only can be in no controllable silicon light modulation
Constant current is realized in the case of device, and light modulation can be realized in the case where there is light modulator.
Described constant-current control circuit includes the first amplifier U31, the second amplifier U32 and the first electric current adjustment pipe M31, described
The first end of the first amplifier U31 receive described output current sampled value (being sampled by sampling resistor R31), which second
End receives reference value VREF3 of average output current, and the output end of the first amplifier U31 is connected to the second end of the second amplifier U32,
The output end of the first amplifier U31 is connected with the first filter capacitor C31 simultaneously；The first end of second amplifier U32 receives described
Output current sampled value, the output end of the second amplifier U32 and the first electric current adjust the control end of pipe M31 and are connected.The present embodiment
In the first electric current adjustment pipe M31 be NMOS, the drain electrode of M31 is connected to the input of linear constant current circuit U03, and source electrode is through sampling
Resistance R31 is connected to the output end of U03.The common port of M31 and resistance R31 is connected to the negative input of amplifier U31 and amplifier U32
End, the positive input terminal connection reference voltage VREF3 of amplifier U31, output end VC of U31 connect the output end of electric capacity C31 to U03,
VC is connected to the positive input terminal of U32, and the output end of U32 is connected to the grid of M31.First amplifier U31 is sampled defeated by resistance R31
Go out electric current, the electric capacity of the output end of VC to linear constant current circuit U03 is sufficiently large, can filter secondary working frequency ripple wave so that output
Average voltage on current sampling resistor R31 is equal to the mean value (filtering secondary working frequency ripple wave) of VREF3, i.e. output current
VREF3/R31, and realize constant current.Instantaneous value of second amplifier U32 by sampled output current, real-time regulation output current.
Described constant-current control circuit also includes that the angle of flow detects circuit U 33, the reference value of described average output current
VREF3 is exported by angle of flow detection circuit U 33, and described conducting angle detection circuit (is sampled according to the size of the input voltage
The common port of the positive output end and diode D01 of rectifier bridge), the angle of flow of the input of drive circuit is obtained, output is led with described
Reference value VREF3 of the corresponding average output current of current flow angle, in the case of without controllable silicon dimmer, as the angle of flow is all most
The big angle of flow, the mean value of output current keep constant, realize output constant current.Arrange between AC power and rectifier bridge controllable
In the case of silicon light modulator U02, reference value VREF3 of described average output current changes with the angle of flow of drive circuit
And change so that the average output current for flowing through load changes therewith, to realize light modulation.The angle of flow detection circuit U 33 is closed
Can be realized by prior art in the part of angle of flow detection, and corresponding average output current is exported according to angle of flow size
The module that reference value VREF3 can be changed by wherein numerical value is completed.
A kind of a kind of implementation of simply linear constant current circuit U03 described in figure 2 above is also many different
Circuit, is all capable of achieving.Such as, electric capacity C31 can with by the way of numeral realizing, even if with the mode of counter.
Circuit U 05 is eliminated by ripple in the negative terminal of load and is connected to linear constant current circuit U03, further reduce output electricity
The ripple of stream.When controllable silicon dimmer is accessed, the flicker that big small echo causes can be effectively improved.Ripple eliminates circuit U 05 and also will
It is illustrated in the following accompanying drawing for illustrating its particular circuit configurations.
With reference to shown in Fig. 3, the particular circuit configurations of leadage circuit U04 are illustrated, i.e., a kind of implementation.R01 samplings are defeated
Enter electric current, the 3rd amplifier U62 is by adjusting the second control terminal voltage for adjusting pipe M61 so that bus current (flows through M61's
Input current of the leakage current plus LED current) for VREF6/R01, VREF6 is used as bus current reference value.VREF6/R01's
Maintenance electric current of the size more than controllable silicon dimmer, when electric current is more than VREF6/R01 in LED load, that is, represents input current
Control M61 to make leakage current to be 0 more than electric current, therefore U62 is maintained.
With reference to shown in Fig. 4, a kind of embodiment that ripple eliminates circuit U 05 is illustrated, described ripple eliminates circuit bag
Include the first adjustment pipe M51 and its adjustment pipe control circuit, the first described adjustment pipe M51 and load in series, the adjustment management and control
Circuit processed is adjusted according to the first adjustment pipe M51 and reference value VREF5 of public terminal voltage VD and the public terminal voltage of load
The control end of the first adjustment pipe M51 so that public terminal voltage VD is equal to reference value VREF5 of the public terminal voltage.
In this embodiment, described adjustment pipe control circuit includes four high guaily unit U51, and the first of described four high guaily unit U51 terminates
Reference value VREF5 of the public terminal voltage is received, its second end receives described public terminal voltage VD, its output end is adjusted with first
The control end connection of homogeneous tube M51, while the output end of four high guaily unit is connected with the second filter capacitor C51.By the leakage for controlling M51
The mean value of terminal voltage is VREF5 so that output voltage ripple is at the first adjustment pipe M51 two ends, and the voltage for loading two ends is protected
Hold constant pressure.
With reference to shown in Fig. 5, the another embodiment that ripple eliminates circuit U 05 is illustrated, tied in the circuit of Fig. 4 embodiments
The 5th amplifier U52 is increased on structure, the output end of four high guaily unit U51 is connected with the second end of the 5th amplifier U52, while the 4th fortune
The output end for putting U51 is connected with the second filter capacitor C51；The first end of the 5th amplifier U52 is received and flows through first tune
The current sampling data of the electric current of homogeneous tube M51, the output end of the second amplifier U52 are connected with the control end of the first adjustment pipe M51.Add
5th amplifier U52, is steady state value by controlling the electric current on R51, so as to further improve ripple eradicating efficacy.
With reference to shown in Fig. 6, the particular circuit configurations of illumination driving circuit embodiment of the present utility model two, its base are illustrated
Present principles are identical with the embodiment one in Fig. 2, thus with one identical part of embodiment, can refer to the explanation with regard to embodiment one.
Circuit structures of the Fig. 6 with regard to embodiment two, the difference with embodiment one is：Angle of flow detection circuit U 33 angle detection
The difference of input signal.Embodiment one is using input voltage as input signal, and in the present embodiment, the angle of flow detects circuit U 33
Described output current sampled value (i.e. the voltage of R31) is received, i.e., realizes that according to output current instantaneous value angle is detected, so as to
Reference value VREF3 of output average output current corresponding with the angle of flow.Certainly, embodiment one and two can be combined with each other, i.e.,
Access voltage and output current sampled value can be detected simultaneously, more accurately detect the angle of flow of controllable silicon dimmer.
The particular circuit configurations of illumination driving circuit embodiment of the present utility model three with reference to shown in Fig. 7, are illustrated, is exchanged
The rectified bridge of power supply obtains input voltage to load supplying, and the drive circuit includes constant-current control circuit, described constant current control
Circuit processed flows through the electric current of load by sampling, obtains characterizing the output current sampled value of output current instantaneous value,
Detect whether to access controllable silicon dimmer U02 by angle of flow detection circuit U 33, detecting without controllable silicon dimmer
In the case of, according to the output current sampled value and reference value VREF3 of average output current, regulation flows through the electricity of load
Stream, realizes output constant current, and unlike embodiment one, two, reference value VREF3 of described average output current is not by leading
Current flow angle detection circuit U 33 is produced, but default one fixed value signal.Detect and arrange between AC power and rectifier bridge
In the case of controllable silicon dimmer U02, according to the output current sampled value and instantaneous output current reference value, regulation flows through negative
The electric current of load, when controllable silicon dimmer is turned on, the output current instantaneous value for flowing through load is constant, then average output current with
The change of the angle of flow and change, with realize light modulation.
As the present embodiment is basis whether there is controllable silicon dimmer, the switching of state is carried out, and is not counted in real time
The regulation of value.Therefore, the present embodiment only determines whether controllable silicon dimmer access, and need not judge the concrete number of the angle of flow
Value, detects that the concrete numerical value of the angle of flow also should be all right certainly.
But, described conducting angle detection circuit still can be adopted according to the size of the input voltage and/or output current
The size of sample value, obtains the angle of flow of the input of drive circuit, to judge whether to access controllable silicon dimmer U02, is accessing
In the case of controllable silicon dimmer U02, described average output current is identical with the variation tendency of the angle of flow.
Described constant-current control circuit includes the first amplifier U31, the second amplifier U32 and the first electric current adjustment pipe M31, described
The first end of the first amplifier U31 receive described output current sampled value (being sampled by sampling resistor R31), which second
End receives reference value VREF3 of average output current, and the output end of the first amplifier U31 is connected with the first filter capacitor C31；It is described
The first end of the second amplifier U32 receives described output current sampled value, and the output end of the second amplifier U32 is adjusted with the first electric current
The control end connection of pipe M31, the second end of the second amplifier U32 arranges selecting switch K30, is detecting without controllable silicon dimmer
In the case of U02, the chosen switch K30 in the second end of the second amplifier U32 is connected with the output end of the first amplifier U31, in detection
To having controllable silicon dimmer U02 in the case of, the second end of the second amplifier U32 disconnects the company with the output end of the first amplifier U31
Connect, now the second end of the second amplifier U32 receives other reference voltages VREF4, other described in this case reference voltages
Reference values of the VREF4 as instantaneous output current.
With reference to shown in Fig. 8, the particular circuit configurations of illumination driving circuit example IV of the present utility model, this reality are illustrated
Apply conversion of the example mainly conducted in Fig. 7 of enforcement three.For the convenience realized, it is not necessary to other reference voltages for separately setting
VREF4, and in the case where controllable silicon dimmer U02 has been detected, directly made using reference value VREF3 of average output current
For the reference value of instantaneous output current.
In addition, although above embodiment is separately illustrated and is illustrated, but it is related to the common technology in part, in this area
Those of ordinary skill apparently, can be replaced between the embodiments and integrate, and be related to one of embodiment and be not expressly recited
Content, then refer to another embodiment on the books.
Embodiments described above, does not constitute the restriction to the technical scheme protection domain.It is any in above-mentioned enforcement
Modification, equivalent and improvement made within the spirit and principle of mode etc., should be included in the protection model of the technical scheme
Within enclosing.
Claims (12)
1. a kind of illumination driving circuit, the rectified bridge of AC power obtain input voltage to load supplying, the drive circuit bag
Include constant-current control circuit, it is characterised in that：Described constant-current control circuit flows through the electric current of load by sampling, obtains sign defeated
Go out the output current sampled value of current instantaneous value, and according to the output current sampled value and the reference value of average output current,
In the case where the reference value of the average output current keeps constant, regulation flows through the electric current of load, realizes output constant current；
In the case of without controllable silicon dimmer, maximum conduction angle is in, the reference value of average output current keeps constant；
In the case of controllable silicon dimmer is arranged between AC power and rectifier bridge, the reference value of described average output current is with drive
The angle of flow of dynamic circuit changes and changes, to realize light modulation.
2. illumination driving circuit according to claim 1, it is characterised in that：Described constant-current control circuit includes the angle of flow
Detection circuit, described turn on size of the angle detection circuit according to the size and/or output current sampled value of the input voltage,
The angle of flow of the input of drive circuit is obtained, the reference value of average output current corresponding with the angle of flow is exported, it is described
The reference value of average output current is identical with the variation tendency of the angle of flow.
3. illumination driving circuit according to claim 1, it is characterised in that：The drive circuit also includes leadage circuit,
The input current of the described leadage circuit sampling drive circuit, obtains characterizing the input current sampling of input current instantaneous value
Value, the input current sampled value and the bus current reference value for characterizing target input current are made comparisons calculation process, so that
Input current is equal to the target input current, and when the electric current for flowing through load is more than the target input current, control is described
The leakage current of leadage circuit is null value.
4. illumination driving circuit according to claim 1 and 2, it is characterised in that：Described constant-current control circuit includes
One amplifier, the second amplifier and the first electric current adjustment pipe, the first end of the first described amplifier receive described output current sampling
Value, its second end receive the reference value of average output current, and the output end of the first amplifier is connected to the second end of the second amplifier, together
When the first amplifier output end be connected with the first filter capacitor；The first end of second amplifier receives described output current and adopts
Sample value, the control end that the output end of the second amplifier adjusts pipe with the first electric current are connected.
5. illumination driving circuit according to claim 3, it is characterised in that：Described leadage circuit includes that the second electric current is adjusted
Homogeneous tube and the 3rd amplifier, the first end of the 3rd amplifier receive the input current sampled value for characterizing input current instantaneous value, its
Second end receives the bus current reference value for characterizing target input current, and its output end adjusts the control of pipe with the second electric current
End connection, the first end of the second electric current adjustment pipe and the second end are connected to the high cold end of input voltage.
6. the illumination driving circuit according to claim 1 or 3, it is characterised in that：The drive circuit also disappears including ripple
Except circuit, described ripple eliminates circuit and load in series, eliminates circuit by the ripple and adjusts its common port with load
Constant pressure so that load two ends constant pressure, by ripple eliminate circuit carry load on voltage ripple.
7. illumination driving circuit according to claim 6, it is characterised in that：Described ripple eliminates circuit includes the first tune
Homogeneous tube and its adjustment pipe control circuit, the first described adjustment pipe and load in series, the adjustment control circuit are adjusted according to first
Homogeneous tube and the reference value of the public terminal voltage and the public terminal voltage of load, adjust the control end of the first adjustment pipe, make
Obtain reference value of the public terminal voltage equal to the public terminal voltage.
8. illumination driving circuit according to claim 7, it is characterised in that：Described adjustment pipe control circuit also includes the
Four high guaily unit and the 5th amplifier, the first end of described four high guaily unit receive the reference value of the public terminal voltage, its second termination
Described public terminal voltage is received, its output end is connected with the second end of the 5th amplifier, while the output end of four high guaily unit is connected with
Second filter capacitor；The first end of the 5th amplifier receives the current sampling data of the electric current for flowing through the first adjustment pipe, the
The output end of two amplifiers is connected with the control end of the first adjustment pipe.
9. a kind of illumination driving circuit, the rectified bridge of AC power obtain input voltage to load supplying, the drive circuit bag
Include constant-current control circuit, it is characterised in that：Described constant-current control circuit flows through the electric current of load by sampling, obtains sign defeated
Go out the output current sampled value of current instantaneous value,
In the case where detecting without controllable silicon dimmer, according to the reference of the output current sampled value and average output current
Value, regulation flow through the electric current of load, realize output constant current；Detect and controllable silicon light modulation is set between AC power and rectifier bridge
In the case of device, according to the output current sampled value and instantaneous output current reference value, regulation flows through the electric current of load, can
During control silicon dimmer conduction, the output current instantaneous value for flowing through load is constant, then average output current is with the change of the angle of flow
And change, to realize light modulation.
10. illumination driving circuit according to claim 9, it is characterised in that：It is characterized in that：Described current constant control electricity
Road includes turning on angle detection circuit, and described turns on size and/or output current of the angle detection circuit according to the input voltage
The size of sampled value, obtains the angle of flow of the input of drive circuit, to judge whether to access controllable silicon dimmer, can accessing
In the case of control silicon light modulator, described average output current is identical with the variation tendency of the angle of flow.
11. illumination driving circuits according to claim 9 or 10, it is characterised in that：Described constant-current control circuit is also wrapped
The first amplifier, the second amplifier and the first electric current adjustment pipe is included, the first end of the first described amplifier receives described output current
Sampled value, its second end receive the reference value of average output current, and the output end of the first amplifier is connected with the first filter capacitor；Institute
The first end for stating the second amplifier receives described output current sampled value, and the output end of the second amplifier adjusts pipe with the first electric current
Control end connects, and the second end of the second amplifier arranges selecting switch, in the case where detecting without controllable silicon dimmer, the second fortune
The chosen switch in the second end put is connected with the output end of the first amplifier, in the case where controllable silicon dimmer has been detected, the
Second end of two amplifiers disconnects the connection with the output end of the first amplifier, and now the second end of the second amplifier receives described average defeated
Go out the reference value or other reference voltages of electric current, the reference value of described in this case average output current or it is described other
Reference value of the reference voltage as instantaneous output current.
12. illumination driving circuits according to claim 9, it is characterised in that：The drive circuit also includes leadage circuit,
The input current of the described leadage circuit sampling drive circuit, obtains characterizing the input current sampling of input current instantaneous value
Value, the input current sampled value and the bus current reference value for characterizing target input current are made comparisons calculation process, so that
Input current is equal to the target input current, and when the electric current for flowing through load is more than the target input current, control is described
The leakage current of leadage circuit is null value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620900719.5U CN206042434U (en) | 2016-08-18 | 2016-08-18 | Lighting drive circuit and lighting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620900719.5U CN206042434U (en) | 2016-08-18 | 2016-08-18 | Lighting drive circuit and lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206042434U true CN206042434U (en) | 2017-03-22 |
Family
ID=58306965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620900719.5U Withdrawn - After Issue CN206042434U (en) | 2016-08-18 | 2016-08-18 | Lighting drive circuit and lighting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206042434U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132030A (en) * | 2016-08-18 | 2016-11-16 | 杰华特微电子（杭州）有限公司 | A kind of illumination driving circuit and illuminator |
| CN107172764A (en) * | 2017-07-12 | 2017-09-15 | 上海晶丰明源半导体股份有限公司 | Input current limliting module, linear constant current system and method |
| CN107995750A (en) * | 2018-01-03 | 2018-05-04 | 矽力杰半导体技术(杭州)有限公司 | Circuit module, the LED drive circuit of tunable optical and control method |
| CN108880287A (en) * | 2018-07-06 | 2018-11-23 | 矽力杰半导体技术(杭州)有限公司 | Power inverter |
| CN110493913A (en) * | 2019-08-06 | 2019-11-22 | 昂宝电子（上海）有限公司 | The control system and method for LED illumination System for controllable silicon light modulation |
| US11183996B2 (en) | 2017-07-10 | 2021-11-23 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
| CN113840424A (en) * | 2020-06-23 | 2021-12-24 | 华润微集成电路(无锡)有限公司 | Silicon controlled rectifier dimming LED driving system and method thereof |
| US11212885B2 (en) | 2014-04-25 | 2021-12-28 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to TRIAC dimmers |
| US11224105B2 (en) | 2019-02-19 | 2022-01-11 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods with TRIAC dimmers for voltage conversion related to light emitting diodes |
| US11252799B2 (en) | 2019-12-27 | 2022-02-15 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling currents flowing through light emitting diodes |
| US11405992B2 (en) | 2019-11-20 | 2022-08-02 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to TRIAC dimmers associated with LED lighting |
| US11540371B2 (en) | 2020-04-13 | 2022-12-27 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling power factors of LED lighting systems |
| US11564299B2 (en) | 2019-12-19 | 2023-01-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for providing power supply to current controllers associated with LED lighting |
| US11570859B2 (en) | 2017-12-28 | 2023-01-31 | On-Bright Electronics (Shanghai) Co., Ltd. | LED lighting systems with TRIAC dimmers and methods thereof |
-
2016
- 2016-08-18 CN CN201620900719.5U patent/CN206042434U/en not_active Withdrawn - After Issue
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11212885B2 (en) | 2014-04-25 | 2021-12-28 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to TRIAC dimmers |
| CN106132030A (en) * | 2016-08-18 | 2016-11-16 | 杰华特微电子（杭州）有限公司 | A kind of illumination driving circuit and illuminator |
| US11784638B2 (en) | 2017-07-10 | 2023-10-10 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
| US11206015B2 (en) | 2017-07-10 | 2021-12-21 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
| US12009825B2 (en) | 2017-07-10 | 2024-06-11 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
| US11695401B2 (en) | 2017-07-10 | 2023-07-04 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
| US11183996B2 (en) | 2017-07-10 | 2021-11-23 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
| US11201612B2 (en) | 2017-07-10 | 2021-12-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
| CN107172764A (en) * | 2017-07-12 | 2017-09-15 | 上海晶丰明源半导体股份有限公司 | Input current limliting module, linear constant current system and method |
| CN107172764B (en) * | 2017-07-12 | 2019-06-11 | 上海晶丰明源半导体股份有限公司 | Input current limliting module, linear constant current system and method |
| US11937350B2 (en) | 2017-12-28 | 2024-03-19 | On-Bright Electronics (Shanghai) Co., Ltd. | LED lighting systems with TRIAC dimmers and methods thereof |
| US11638335B2 (en) | 2017-12-28 | 2023-04-25 | On-Bright Electronics (Shanghai) Co., Ltd. | LED lighting systems with TRIAC dimmers and methods thereof |
| US11570859B2 (en) | 2017-12-28 | 2023-01-31 | On-Bright Electronics (Shanghai) Co., Ltd. | LED lighting systems with TRIAC dimmers and methods thereof |
| CN107995750A (en) * | 2018-01-03 | 2018-05-04 | 矽力杰半导体技术(杭州)有限公司 | Circuit module, the LED drive circuit of tunable optical and control method |
| CN108880287A (en) * | 2018-07-06 | 2018-11-23 | 矽力杰半导体技术(杭州)有限公司 | Power inverter |
| US11678417B2 (en) | 2019-02-19 | 2023-06-13 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods with TRIAC dimmers for voltage conversion related to light emitting diodes |
| US11224105B2 (en) | 2019-02-19 | 2022-01-11 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods with TRIAC dimmers for voltage conversion related to light emitting diodes |
| CN110493913B (en) * | 2019-08-06 | 2022-02-01 | 昂宝电子（上海）有限公司 | Control system and method for silicon controlled dimming LED lighting system |
| CN110493913A (en) * | 2019-08-06 | 2019-11-22 | 昂宝电子（上海）有限公司 | The control system and method for LED illumination System for controllable silicon light modulation |
| US11792901B2 (en) | 2019-08-06 | 2023-10-17 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to TRIAC dimmers associated with LED lighting |
| US11297704B2 (en) | 2019-08-06 | 2022-04-05 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to TRIAC dimmers associated with LED lighting |
| US12089302B2 (en) | 2019-11-20 | 2024-09-10 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to TRIAC dimmers associated with LED lighting |
| US11743984B2 (en) | 2019-11-20 | 2023-08-29 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to TRIAC dimmers associated with LED lighting |
| US11405992B2 (en) | 2019-11-20 | 2022-08-02 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to TRIAC dimmers associated with LED lighting |
| US11856670B2 (en) | 2019-12-19 | 2023-12-26 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for providing power supply to current controllers associated with LED lighting |
| US11564299B2 (en) | 2019-12-19 | 2023-01-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for providing power supply to current controllers associated with LED lighting |
| US11723128B2 (en) | 2019-12-27 | 2023-08-08 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling currents flowing through light emitting diodes |
| US11252799B2 (en) | 2019-12-27 | 2022-02-15 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling currents flowing through light emitting diodes |
| US11997772B2 (en) | 2020-04-13 | 2024-05-28 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling power factors of led lighting systems |
| US11540371B2 (en) | 2020-04-13 | 2022-12-27 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling power factors of LED lighting systems |
| CN113840424A (en) * | 2020-06-23 | 2021-12-24 | 华润微集成电路(无锡)有限公司 | Silicon controlled rectifier dimming LED driving system and method thereof |
| CN113840424B (en) * | 2020-06-23 | 2024-03-22 | 华润微集成电路(无锡)有限公司 | Silicon controlled rectifier dimming LED driving system and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206042434U (en) | Lighting drive circuit and lighting system | |
| CN106132030B (en) | A kind of illumination driving circuit and illuminator | |
| CN106163009B (en) | Illumination driving circuit and lighting system | |
| CN105792441B (en) | A kind of linear constant current circuit for controllable silicon light modulation | |
| CN205105426U (en) | Automatic linear constant current LED drive circuit of full voltage sectional type of switching mode | |
| CN102682721B (en) | Light emitting diode (LED) backlight system and display device | |
| CN105282929A (en) | Full voltage segmented linear constant current LED drive circuit capable of switching modes automatically | |
| CN107896402A (en) | A kind of LED of the constant-current dimming drive circuit based on PWM inputs | |
| CN110099489A (en) | It is a kind of it is compatible silicon controlled light modulation and Wireless Light modulating driving circuit | |
| CN104243872A (en) | Low-power-consumption constant-current and backlight control circuit and television | |
| CN104253959A (en) | Low-power-consumption voltage-stabilizing backlight control circuit and television | |
| CN104253957A (en) | Low-power-consumption constant-current and backlight control circuit and television | |
| CN104253954B (en) | Low-power-consumption constant-current and backlight control circuit and television | |
| CN106211485B (en) | Current control circuit and apply its LED drive circuit | |
| CN206042438U (en) | Lighting drive circuit and lighting system | |
| CN104253960A (en) | Low-power-consumption voltage-stabilizing backlight control circuit and television | |
| CN104253956B (en) | Low-power-consumption voltage-stabilizing backlight control circuit and television | |
| CN206365087U (en) | Light adjusting circuit and LED drive circuit | |
| CN206077767U (en) | A kind of actinic LED drive circuit of new thyristor regulating | |
| CN108377595A (en) | A kind of multifunctional integrated low-cost backlight circuit and display equipment | |
| CN205657888U (en) | Auxiliary power circuit , LED drive circuit , LED driver | |
| CN102083267B (en) | Electricity saving device | |
| CN106793317A (en) | Light adjusting circuit, light-dimming method and LED drive circuit | |
| CN206042450U (en) | Current control circuit and use its LED drive circuit | |
| CN207603948U (en) | A kind of circuit with Ripple Suppression and drainage function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20180209 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20180209 |