CN105392243B - Color modulation control circuit for LED illumination - Google Patents
Color modulation control circuit for LED illumination Download PDFInfo
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- CN105392243B CN105392243B CN201510474497.5A CN201510474497A CN105392243B CN 105392243 B CN105392243 B CN 105392243B CN 201510474497 A CN201510474497 A CN 201510474497A CN 105392243 B CN105392243 B CN 105392243B
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- 239000003990 capacitor Substances 0.000 description 8
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- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The invention provides a color modulation control circuit for LED illumination, which can realize miniaturization, low cost and high efficiency. A color modulation control circuit (1) for LED illumination comprises: a power factor correction circuit (16); a constant current control circuit (32) which is connected to the power factor correction circuit (16) and which supplies power; a low voltage source (28) which is built in the constant current control circuit (32) and outputs a relatively low voltage; and an output current value adjustment control circuit (30) that is connected to the low-voltage source (28) and supplies a control signal to the constant current control circuit (32).
Description
Technical Field
The present embodiment relates to a color modulation control circuit for LED (light emitting diode) lighting.
Background
As an illumination device that replaces a conventional illumination device such as an incandescent Light bulb or a fluorescent lamp, an LED illumination device such as an LED bulb using a Light Emitting Diode (LED) for a Light source has been widely used.
Lighting a plurality of light sources such as LEDs having different color temperatures to mix the light outputs and obtain an intermediate color temperature is called color modulation, and changing the light output of the light sources is called dimming. The LED lighting device can be configured to be capable of both color adjustment and light adjustment.
[ background Art document ]
[ patent document ]
[ patent document 1] International publication No. 2012/063815
[ patent document 2] Japanese patent laid-open No. 2012-146633
Disclosure of Invention
[ problems to be solved by the invention ]
The invention provides a color modulation control circuit for LED illumination, which can realize miniaturization, low cost and high efficiency.
[ means for solving problems ]
According to an aspect of the embodiment, there is provided a color modulation control circuit for LED lighting, including: a power factor correction circuit; a constant current control circuit connected to the power factor correction circuit and supplying power; a low voltage source built in the constant current control circuit and outputting a relatively low voltage; and an output current value adjustment control circuit connected to the low voltage source and supplying a control signal to the constant current control circuit.
According to another aspect of the embodiments, there is provided a color modulation control circuit for LED lighting, including: a power factor correction circuit with a built-in low voltage regulator; the 1 st LED driver and the 2 nd LED driver are connected in parallel with the output of the power factor correction circuit; and a dimming/toning on/off control circuit connected to the power factor correction circuit and supplying a 1 st control signal and a 2 nd control signal to the 1 st LED driver and the 2 nd LED driver, respectively; and the low voltage output of the low voltage regulator may be supplied to the dimming, toning on off control circuit.
According to another aspect of the embodiments, there is provided a color modulation control circuit for LED lighting, including: a power factor correction circuit; the low voltage regulator is connected with the power factor correction circuit; the 1 st LED driver and the 2 nd LED driver are connected in parallel with the output of the power factor correction circuit; and a dimming/toning on/off control circuit connected to the low voltage regulator and supplying a 1 st control signal and a 2 nd control signal to the 1 st LED driver and the 2 nd LED driver, respectively; and the low voltage output of the low voltage regulator may be supplied to the dimming, toning on off control circuit.
[ Effect of the invention ]
A color mixing control circuit for LED illumination, which can realize miniaturization, low cost and high efficiency, can be provided.
Drawings
Fig. 1 is a schematic circuit block configuration diagram of a color modulation control circuit for LED lighting of a comparative example.
Fig. 2 is a schematic circuit block configuration diagram of a current control circuit connected in parallel in the color modulation control circuit for LED illumination of the comparative example.
Fig. 3 is a block diagram of a basic circuit of the LED lighting color modulation control circuit according to embodiment 1.
Fig. 4(a) is a schematic block configuration diagram of a color modulation control circuit for LED lighting of a comparative example, and (b) is a schematic block configuration diagram of a color modulation control circuit for LED lighting of embodiment 2.
Fig. 5 is a schematic block configuration diagram of the LED lighting color modulation control circuit according to embodiment 3.
Fig. 6 is a schematic block configuration diagram of the LED lighting color modulation control circuit according to embodiment 4.
Fig. 7 is a schematic block configuration diagram of the LED lighting color modulation control circuit according to embodiment 5.
Fig. 8 is a schematic block configuration diagram of the LED lighting color modulation control circuit according to embodiment 6.
Fig. 9 is a detailed circuit configuration diagram of the color modulation control circuit for LED lighting of the comparative example.
Fig. 10 is a detailed circuit configuration diagram of the LED lighting color modulation control circuit according to embodiment 7.
Fig. 11 is a detailed circuit configuration diagram of the LED lighting color modulation control circuit according to variation 1 of embodiment 7.
Fig. 12 is a detailed circuit configuration diagram of an LED lighting color modulation control circuit according to variation 2 of embodiment 7.
Fig. 13 is a detailed circuit configuration diagram of an LED lighting color modulation control circuit according to variation 3 of embodiment 7.
Fig. 14 is a detailed circuit configuration diagram of the LED lighting color modulation control circuit according to embodiment 8.
Fig. 15 is a detailed circuit configuration diagram of the LED lighting color modulation control circuit according to variation 1 of embodiment 8.
Fig. 16 is a detailed circuit configuration diagram of an LED lighting color modulation control circuit according to variation 2 of embodiment 8.
Fig. 17 is a detailed circuit configuration diagram of the LED lighting color modulation control circuit according to embodiment 9.
Fig. 18 is a detailed circuit configuration diagram of the LED lighting color modulation control circuit according to variation 1 of embodiment 9.
Fig. 19 is a detailed circuit configuration diagram of the LED lighting color modulation control circuit according to variation 2 of embodiment 9.
Detailed Description
Next, an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar components are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship of the thickness to the planar size, the ratio of the thicknesses of the respective layers, and the like are different from the actual ones. Therefore, the specific thickness or size should be determined in consideration of the following description. It is to be understood that the drawings also include portions having different dimensional relationships or ratios from each other.
The embodiments described below are examples of apparatuses and methods for embodying technical ideas, and the materials, shapes, structures, arrangements, and the like of the components are not specified below. Various modifications may be made to the embodiments within the scope of the claims.
Comparative example
A schematic circuit block configuration of the LED illumination color modulation control circuit 1A of the comparative example is shown in fig. 1. In addition, in the color modulation control circuit 1A for LED lighting of the comparative example, the current control circuit 18 in which the plurality of channels CH1, CH2, CH3, …, CHn are connected in parallel is provided1A、182A、183A、…、18nThe schematic circuit block configuration of a is shown as shown in fig. 2.
As shown in fig. 1, the color modulation control circuit 1A for LED lighting of the comparative example includes: an AC (alternating current) power supply 10; an input filter 12 connected to the AC power supply 10; a diode bridge 14 connected to the input filter 12; a Power Factor Correction (PFC) circuit 16 connected to an output of the diode bridge 14; current control circuit 181A、182A、183A、…、18nA, connected to the PFC circuit 16, and supplying power; a low voltage source 24A connected to the PFC circuit 16 and outputting a relatively low voltage; and a dimming/toning on/off control circuit 26A connected to the low voltage source 24A and for controlling the current control circuit 181A、182A、183A、…、18nA supplies control signals CS1, CS2, CS3, …, CSn.
In addition, as shown in fig. 2, the current control circuit 181A、182A、183A、…、18nEach section a includes an LED lighting driver 201A、202A、203A、…、20nA. And connected to the LED lighting driver 201A、202A、203A、…、20nA, an LED. Driver 20 for LED lighting1A、202A、203A、…、20nA is provided with a low voltage source 221A、222A、223A、…、22nA。
As shown in fig. 1, the color tone control circuit 1A for LED lighting of the comparative example is a system for adjusting a constant current value from an AC power supply 10 and outputting the adjusted constant current value, and a current control circuit 18 for constant current output is required1A、182A、183A、…、18nA. And a low-voltage source 24A for turning on/off the control circuit 26A for dimming and toning to adjust the output current value. Here, the current control circuit 181A、182A、183A、…、18nA and the low voltage source 24A each comprise an Integrated Circuit (IC) for current control and voltage output, respectively.
Current control circuit 18 for constant current output1A、182A、183A、…、18nThe IC for A mostly has a low voltage source 22 inside1A、222A、223A、…、22nA, however, the internal low voltage source 22 cannot be used to limit the number of pins (Pin) or to reduce the number of external circuit components1A、222A、223A、…、22nA is used as a power supply for an external circuit.
[ embodiment 1]
The basic circuit block configuration of the LED lighting color modulation control circuit 1 according to embodiment 1 is shown in fig. 3.
As shown in fig. 3, the LED lighting color modulation control circuit 1 according to embodiment 1 includes an AC power supply 10; an input filter 12 connected to the AC power supply 10; a diode bridge 14 connected to the input filter 12; a PFC circuit 16 connected to an output of the diode bridge 14; a constant current control circuit 32 connected to the PFC circuit 16 and supplying power; a low voltage source 28 built in the constant current control circuit 32 and outputting a relatively low voltage; and an output current value adjustment control circuit 30 connected to the low voltage source 28 and supplying a control signal CS to the constant current control circuit 32.
As shown in fig. 3, the LED lighting tone control circuit 1 of embodiment 1 is a system in which a constant current control circuit 32 for outputting a constant current (represented by a constant current source J) from an AC power supply 10 and an output current value adjustment control circuit 30 for adjusting the output current value thereof are necessary, and is configured as follows: the constant current control circuit 32 for constant current output also serves to output a low voltage to the low voltage source 28 for the output current value adjustment control circuit 30. Here, the low-voltage power supply 28 is schematically represented by a capacitor C, and a charging current for the capacitor C is supplied from a voltage source E within the constant current control circuit 32.
In the LED illumination color modulation control circuit 1 according to embodiment 1, the constant current control circuit 32 may include an LED illumination driver and an LED, as in the comparative example shown in fig. 1 to 2.
Similarly to the comparative examples shown in fig. 1 to 2, the output current value adjustment control circuit 30 may include a light control/color adjustment on/off control circuit 6 for adjusting the output current value.
According to the color mixing control circuit 1 for LED lighting of embodiment 1, miniaturization, cost reduction, and high efficiency can be achieved.
According to the LED illumination color modulation control circuit 1 of embodiment 1, the constant current control circuit 32 for constant current output is also configured to be used as the low voltage output, and thus, a separate power supply circuit (for example, the low voltage source 24A in comparative example 1) for the output current value adjustment control circuit 30 is not required, and miniaturization can be achieved.
In the LED lighting color modulation control circuit 1 according to embodiment 1, the constant current control circuit 32 for constant current output is also configured to be used as a low voltage output, but another integrated circuit portion may be provided with the function of supplying the low voltage source 28. For example, the PFC circuit 16 may maintain this function as described below.
According to embodiment 1, it is possible to provide a color mixing control circuit for LED lighting, which can realize miniaturization, cost reduction, and high efficiency.
[ 2 nd embodiment ]
Comparative example
A schematic block configuration of the LED lighting tone control circuit 1A of the comparative example is shown in fig. 4 (a).
As shown in fig. 4(a), the color modulation control circuit 1A for LED lighting of the comparative example includes: a PFC circuit 16A; a DC (direct current)/DC converter 15 connected to the PFC circuit 16A; LED driver 201A、202A connected to the output of the DC/DC converter 15; a Low Drop Out (LDO) 23A connected to an output of the DC/DC converter 15 and outputting a relatively Low voltage; and a microcomputer 27A connected to LDO23A and used for LED driver 201A、202A supplies control signals CS1, CS 2.
As shown in fig. 4(a), the color modulation control circuit 1A for LED illumination of the comparative example is a system for drive-controlling LED illumination of 2 or more colors using a microcomputer 27A. As shown in fig. 4(a), the LED lighting tone control circuit 1A of the comparative example converts the output of the PFC circuit 16A in the DC/DC converter 15, and then supplies a low voltage to the microcomputer 27A via the LDO 23A.
A schematic block configuration of the LED lighting color modulation control circuit 1 according to embodiment 2 is shown in fig. 4 (b).
As shown in fig. 4(b), the LED lighting tone control circuit 1 according to embodiment 2 includes: a PFC circuit 17; LED driver 201、202Connected in parallel to the output of the PFC circuit 17; and a microcomputer 27 connected to the PFC circuit 17 and provided for the LED driver 201、202The control signals CS1 and CS2 are supplied. Here, the LDO23 is incorporated in the PFC circuit 17, and the low-voltage output of the LDO23 can be taken out from the low-voltage output terminal LT of the PFC circuit 17.
According to the LED lighting tone control circuit 1 of embodiment 2, the DC/DC converter 15 in the comparative example is not required, and the power can be supplied directly from the output of the PFC circuit 17 to the LED driver 201、202. Therefore, the power consumption of the AC/DC conversion circuit for the power supply circuit can be reduced.
Further, according to the LED lighting tone control circuit 1 of embodiment 2, since the low-voltage source for the microcomputer 27 is supplied by the LDO23 built in the PFC circuit 17, the size can be reduced without requiring a separate LDO 23A.
According to embodiment 2, it is possible to provide a color mixing control circuit for LED lighting, which can realize miniaturization, cost reduction, and high efficiency.
[ embodiment 3 ]
A schematic block configuration of the LED lighting color modulation control circuit 1 according to embodiment 3 is shown in fig. 5.
As shown in fig. 5, the LED lighting color modulation control circuit 1 according to embodiment 3 includes: a PFC circuit 17; LED driver 201、202Connected in parallel to the output of the PFC circuit 17; and a microcomputer 27 connected to the PFC circuit 17 and provided for the LED driver 201、202The control signals CS1 and CS2 are supplied. Here, the PFC circuit 17 incorporates a Low Voltage Regulator (LVREG) 23R. In addition, PFC circuit 17 and LED driver 201、202Built into the integrated circuit 90. The integrated circuit 90 has a low voltage output terminal LT so that power can be supplied to the external microcomputer 27. The LVREG23R can supply a low voltage to the microcomputer 27 via the low voltage output terminal LT.
According to the LED lighting tone control circuit 1 of embodiment 3, the power can be supplied directly from the output of the PFC circuit 17 to the LED driver 20 without the need of the DC/DC converter1、202Therefore, the power consumption of the AC/DC conversion circuit for the power supply circuit can be reduced.
In addition, according to the LED lighting tone control circuit 1 of embodiment 3, since the low-voltage source for the microcomputer 27 is supplied by the LVREG23R built in the PFC circuit 17, it is possible to reduce the size without requiring a separate low-voltage source.
According to embodiment 3, a color modulation control circuit for LED lighting, which can be reduced in size, cost, and efficiency, can be provided.
[ 4 th embodiment ]
A schematic block configuration of the LED lighting color modulation control circuit 1 according to embodiment 4 is shown in fig. 6.
As shown in figure 6 of the drawings,the LED lighting color modulation control circuit 1 according to embodiment 4 includes: a PFC circuit 17; LED driver 201、202Connected in parallel to the output of the PFC circuit 17; and a microcomputer 27 connected to the PFC circuit 17 and provided for the LED driver 201、202The control signals CS1 and CS2 are supplied. Here, LVREG23R is built in PFC circuit 17, and a low voltage output of LVREG23R can be taken out from low voltage output terminal LT of PFC circuit 17.
According to the LED lighting tone control circuit 1 of embodiment 4, the power can be supplied directly from the output of the PFC circuit 17 to the LED driver 20 without the need of the DC/DC converter1、202Therefore, the power consumption of the AC/DC conversion circuit for the power supply circuit can be reduced.
In addition, according to the LED lighting tone control circuit 1 of embodiment 4, since the low-voltage source for the microcomputer 27 is supplied by the LVREG23R built in the PFC circuit 17, it is possible to reduce the size without requiring a separate low-voltage source.
According to embodiment 4, a color modulation control circuit for LED lighting, which can be reduced in size, cost, and efficiency, can be provided.
[ 5 th embodiment ]
Fig. 7 shows a schematic block configuration of the LED lighting color modulation control circuit according to embodiment 5.
As shown in fig. 7, the LED illumination color modulation control circuit 1 according to embodiment 5 includes: a PFC circuit 17; multiple LED drivers 201、202、203、…、20nConnected in parallel to the output of the PFC circuit 17; and a microcomputer 27 connected to the PFC circuit 17 and provided for the LED driver 201、202、203、…、20nControl signals CS1, CS2, CS3, …, and CSn are supplied. Here, the PFC circuit 17 incorporates the LVREG 23R. In addition, PFC circuit 17 and LED driver 201Built into the integrated circuit 92. The low voltage output of LVREG23R may be taken from low voltage output terminal LT of integrated circuit 92.
According to the LED lighting color modulation control circuit 1 of embodiment 5, a DC/DC converter is not required, and the LED lighting color modulation control circuit can be used without the DC/DC converterThe power is directly supplied from the output of the PFC circuit 17 to the plurality of LED drivers 201、202、203、…、20nTherefore, power consumption can be reduced.
In addition, according to the LED lighting tone control circuit 1 of embodiment 5, since the low-voltage source for the microcomputer 27 is supplied by the LVREG23R built in the PFC circuit 17, it is possible to reduce the size without requiring a separate low-voltage source.
According to embodiment 5, a color modulation control circuit for LED lighting, which can be reduced in size, cost, and efficiency, can be provided.
[ 6 th embodiment ]
A schematic block configuration of the LED lighting color modulation control circuit 1 according to embodiment 6 is shown in fig. 8.
As shown in fig. 8, the LED illumination color modulation control circuit 1 according to embodiment 6 includes: a PFC circuit 17; multiple LED drivers 201、202、203、…、20nConnected in parallel to the output of the PFC circuit 17; and a microcomputer 27 connected to the PFC circuit 17, supplied with a relatively low voltage, and applying the relatively low voltage to the LED driver 201、202、203、…、20nControl signals CS1, CS2, CS3, …, and CSn are supplied. Here, LVREG23R is built in PFC circuit 17, and a low voltage output of LVREG23R can be taken out from low voltage output terminal LT of PFC circuit 17.
According to the LED lighting tone control circuit 1 of embodiment 6, the power can be supplied directly from the output of the PFC circuit 17 to the plurality of LED drivers 201、202、203、…、20nTherefore, power consumption can be reduced.
In addition, according to the LED lighting tone control circuit 1 of embodiment 6, since the low-voltage source for the microcomputer 27 is supplied by the LVREG23R built in the PFC circuit 17, it is possible to reduce the size without requiring a separate low-voltage source.
According to embodiment 6, it is possible to provide a color mixing control circuit for LED lighting, which can realize miniaturization, cost reduction, and high efficiency.
[ 7 th embodiment ]
Comparative example
The detailed circuit configuration of the LED lighting tone control circuit 1A of the comparative example is shown in fig. 9.
As shown in fig. 9, the color modulation control circuit 1A for LED lighting of the comparative example includes: LED driver 20 for 2-color dimming1A、202 A. Flyback transformer 151、152 PFC circuit 16A, LDO23A and dimming/toning on/off control circuit 26A. In a flyback transformer 151、152Primary side of (2) is provided with an inductor L1、L3An inductor L is arranged on the secondary side of 22。
In fig. 9, an AC power supply 10 is provided with an input filter 12, a Diode Bridge (DB)14, and a smoothing circuit (C)0、L0) Anti-reflux diode D0And a field capacitor CEAnd a flyback transformer 15 is connected thereto1、152Primary side inductance L of1、L1。
As shown in fig. 9, the color modulation control circuit 1A for LED lighting of the comparative example includes: primary side inductance L1、L1Connected to the AC line side; current sensing resistor RS1、RS2Connected to ground potential; MOSFET (metal-oxide-semiconductor field-effect transistor) Q for switchS1、QS2And is connected in series to the primary side inductor L1、L1And a current sensing resistor RS1、RS2To (c) to (d); and an LED driver 201A、202A connected to the primary side inductor L1、L1、MOSFETQS1、QS2Current sensing resistor RS1、RS2So as to control the current flowing to the primary side inductor L1、L1The current of (2).
In addition, in flyback transformer 151、1522-time side inductance L2The connection comprising a diode DL1、DL2And a capacitor CL1、CL2Diode rectifier circuit (D)L1、CL1)、(DL2、CL2) From the capacitor CL1、CL2Output acquisition driven LED1、LED2The output voltage of (1).
Further, as shown in fig. 9, the color modulation control circuit 1A for LED lighting of the comparative example has a smoothing circuit (C) on the primary side0、L0) Anti-reflux diode D0Between the ground potential and the ground potential, a PFC MOSFET Q whose ON/OFF can be controlled by a PFC circuit 16A is connectedPAnd a series resistance RpAs a result, the PFC and the dimming/toning can be controlled to be turned on/off.
In addition, in flyback transformer 151、152Primary side auxiliary winding inductor L3The connection comprising a diode D31、D32And a capacitor C31、C32Diode rectifier circuit (D)31、C31)、(D32、C32) And a slave capacitor C31、C32Output obtaining drive PFC circuit 16A, LDO23A and LED driver 201A. LED driver 202The output voltage of A.
As shown in fig. 9, the color modulation control circuit 1A for LED lighting of the comparative example includes: an AC power source 10; an input filter 12 connected to the AC power supply 10; a diode bridge 14 connected to the input filter 12; smoothing circuit (L)0、C0) Anti-reflux diode D0And a field capacitor CEConnected to the output of the diode bridge 14; a PFC circuit 16A; LED driver 201A、202A, supplying power; LDO23A, outputting a low voltage; and a dimming/toning on/off control circuit 26A connected to the LDO23A and for the LED driver 201A、202A supplies control signals CS1, CS 2.
The color modulation control circuit 1A for LED lighting of the comparative example includes the PFC circuit 16A, LED driver 20 in the application of 2-color light for a ceiling lamp1A、202A. LDO23A and dimming/toning on/off control circuit 26A. The PFC circuit 16A includes an LV circuit built-in power supply 22P, and an LED driver 201A、202A has an internal power supply 22 for LV circuit1A、222A. That is, PFC circuit 16A, LED driver 201A、202A are built in the respective ICs, and have built-in power supplies 22P, 22 for LV circuit inside the respective ICs1A、222A. However, since there is no output for driving the external dimming/toning on/off control circuit 26A, the LDO23A is externally required.
As shown in fig. 9, the color modulation control circuit 1A for LED lighting of the comparative example is a system for adjusting a constant current value from the AC power supply 10 and outputting the adjusted constant current value, and a PFC circuit 16A for PFC control and an LED driver 20 for constant current output are required1A、202A. And LDO23A for the dimming/toning on/off control circuit 26A for adjusting the output current value. Here, PFC circuit 16A, LED driver 201A、202 A. LDOs 23A each comprise an Integrated Circuit (IC) for current control and voltage output, respectively.
LED driver 20 for constant current output1A、202Most of the ICs for A have an internal power supply 22 for LV circuit therein1A、222A, however, the internal power supply 22 for the LV circuit cannot be used for limiting the number of pins (Pin) or reducing the number of external circuit components1A、222A is used as a power supply for an external circuit.
A detailed circuit configuration of the LED lighting tone control circuit 1 according to embodiment 7 is shown in fig. 10.
The LED lighting color modulation control circuit 1 according to embodiment 7 includes a PFC circuit 16 and an LED driver 20 in a 2-color light application for a ceiling lamp1、202LVREG23R and dimming/toning on/off control circuit 26. Here, PFC circuit 16, LVREG23R, and LED driver 201Built into the integrated circuit 100. The integrated circuit 100 has a low-voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 alsoMay have a microcomputer. In addition, LVREG23R may also be built into PFC circuit 16 or LED driver 201. The other constitution is the same as that of the comparative example shown in FIG. 9.
According to the color modulation control circuit 1 for LED lighting of embodiment 7, the low-voltage source for the light modulation/color modulation on/off control circuit 26 is supplied by the LVREG23R built in the integrated circuit 100, and therefore, a separate low-voltage source is not required and downsizing is possible.
According to embodiment 7, a color modulation control circuit for LED lighting, which can be reduced in size, cost, and efficiency, can be provided.
(modification 1)
A detailed circuit configuration of the LED lighting tone control circuit 1 according to variation 1 of embodiment 7 is shown in fig. 11.
The LED lighting color modulation control circuit 1 according to variation 1 of embodiment 7 includes a PFC circuit 16 and an LED driver 20 in a 2-color light application for a ceiling lamp1、202LVREG23R and dimming/toning on/off control circuit 26. Here, PFC circuit 16 and LVREG23R are built into integrated circuit 102. The integrated circuit 102 has a low voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. In addition, LVREG23R may also be built into PFC circuit 16. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of variation 1 of embodiment 7, since the low-voltage source for the light modulation/color modulation on/off control circuit 26 is supplied by the LVREG23R built in the integrated circuit 102, a separate low-voltage source is not required, and downsizing is possible.
According to variation 1 of embodiment 7, a color tone control circuit for LED lighting that can be reduced in size, cost, and efficiency can be provided.
(modification 2)
A detailed circuit configuration of the LED lighting tone control circuit 1 according to variation 2 of embodiment 7 is shown in fig. 12.
The LED lighting color modulation control circuit 1 according to variation 2 of embodiment 7 includes a PFC circuit 16 and an LED driver 20 in a 2-color light application for a ceiling lamp1、202LVREG23R and dimming/toning on/off control circuit 26. Here, the LED driver 201And LVREG23R are built into integrated circuit 104. The integrated circuit 104 has a low voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. Additionally, LVREG23R may also be built into LED driver 201. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of variation 2 of embodiment 7, since the low-voltage source for the light modulation/color modulation on/off control circuit 26 is supplied by the LVREG23R built in the integrated circuit 104, a separate low-voltage source is not required, and downsizing is possible.
According to variation 2 of embodiment 7, a color tone control circuit for LED lighting that can be reduced in size, cost, and efficiency can be provided.
(modification 3)
A detailed circuit configuration of the LED lighting tone control circuit according to variation 3 of embodiment 7 is shown in fig. 13.
The LED lighting tone control circuit 1 according to variation 3 of embodiment 7 includes a PFC circuit 16 and an LED driver 20 in a 2-tone lighting application for a ceiling-up lamp1、202LVREG23R and dimming/toning on/off control circuit 26. Here, the LED driver 201、202And LVREG23R are built into integrated circuit 106. The integrated circuit 106 has a low voltage output terminal LT to supply an external voltageThe light and color modulation turn on/off the power of the control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. Additionally, LVREG23R may also be built into LED driver 201Or LED driver 202. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of variation 3 of embodiment 7, since the low-voltage source for the light modulation/color modulation on/off control circuit 26 is supplied by the LVREG23R built in the integrated circuit 106, a separate low-voltage source is not required, and downsizing is possible.
According to variation 3 of embodiment 7, a color tone control circuit for LED lighting that can be reduced in size, cost, and efficiency can be provided.
[ 8 th embodiment ]
A detailed circuit configuration of the LED lighting tone control circuit 1 according to embodiment 8 is shown in fig. 14.
The LED lighting color modulation control circuit 1 according to embodiment 8 includes a PFC circuit 17 and an LED driver 20 in a 2-color light application for a ceiling lamp1、202And a dimming/toning on/off control circuit 26. Here, the PFC circuit 17 incorporates the LVREG 23R. The PFC circuit 17 has a low voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of embodiment 8, the low-voltage source for the light modulation/color modulation on/off control circuit 26 is supplied by the LVREG23R built in the PFC circuit 17, and therefore, a separate low-voltage source is not required and downsizing is possible.
According to embodiment 8, a color modulation control circuit for LED lighting, which can be reduced in size, cost, and efficiency, can be provided.
(modification 1)
A detailed circuit configuration of the LED lighting tone control circuit 1 according to variation 1 of embodiment 8 is shown in fig. 15.
The LED lighting tone control circuit 1 according to variation 1 of embodiment 8 includes a PFC circuit 17 and an LED driver 20 in a 2-tone light application for a dome lamp1、202And a dimming/toning on/off control circuit 26. Here, the PFC circuit 17 incorporates the LVREG 23R. In addition, the LED driver 201And PFC circuit 17 is built into integrated circuit 108. The integrated circuit 108 has a low voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. LVREG23R may supply a low voltage to dimming/toning on/off control circuit 26 via low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of embodiment 8, the low-voltage source for the light modulation/color modulation on/off control circuit 26 is supplied by the LVREG23R built in the PFC circuit 17, and therefore, a separate low-voltage source is not required and downsizing is possible.
According to variation 1 of embodiment 8, a color tone control circuit for LED lighting that can be reduced in size, cost, and efficiency can be provided.
(modification 2)
A detailed circuit configuration of the LED lighting tone control circuit 1 according to variation 2 of embodiment 8 is shown in fig. 16.
The LED lighting tone control circuit 1 according to variation 2 of embodiment 8 includes a PFC circuit 17 and an LED driver 20 in a 2-tone lighting application for a ceiling-up lamp1、202And a dimming/toning on/off control circuit 26. Here, in PFC powerThe LVREG23R is built in the road 17. In addition, the LED driver 201、202And PFC circuit 17 is built into integrated circuit 110. The integrated circuit 110 has a low voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. LVREG23R may supply a low voltage to dimming/toning on/off control circuit 26 via low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of variation 2 of embodiment 8, since the low-voltage source for the light modulation/color modulation on/off control circuit 26 is supplied by the LVREG23R built in the PFC circuit 17, a separate low-voltage source is not required, and downsizing is possible.
According to variation 2 of embodiment 8, a color tone control circuit for LED lighting that can be reduced in size, cost, and efficiency can be provided.
[ 9 th embodiment ]
A detailed circuit configuration of the LED lighting tone control circuit 1 according to embodiment 9 is shown in fig. 17.
The LED lighting color modulation control circuit 1 according to embodiment 9 includes a PFC circuit 16 and an LED driver 20 in a 2-color light application for a dome lamp1、202And a dimming/toning on/off control circuit 26. Here, in the LED driver 201Built-in LVREG 23R. LED driver 201The low voltage output terminal LT is provided so that power can be supplied to the external dimming/toning on/off control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. The other structure is the same as that of embodiment 7 shown in fig. 10.
The color modulation control circuit 1 for LED lighting according to embodiment 9 is built in the LED driver 201The LVREG23R supplies a low voltage source for the dimming/toning on/off control circuit 26, and therefore, a separate low voltage source is not required and the size can be reduced.
According to embodiment 9, a color modulation control circuit for LED lighting, which can be reduced in size, cost, and efficiency, can be provided.
(modification 1)
A detailed circuit configuration of the LED lighting tone control circuit 1 according to variation 1 of embodiment 9 is shown in fig. 18.
The LED lighting tone control circuit 1 according to variation 1 of embodiment 9 includes a PFC circuit 16 and an LED driver 20 in a 2-tone lighting application for a ceiling-up lamp1、202And a dimming/toning on/off control circuit 26. Here, in the LED driver 201Built-in LVREG 23R. In addition, the LED driver 201And PFC circuit 16 is built into integrated circuit 112. The integrated circuit 112 has a low voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of variation 1 of embodiment 9, the color modulation control circuit is incorporated in the LED driver 201The LVREG23R supplies a low voltage source for the dimming/toning on/off control circuit 26, and therefore, a separate low voltage source is not required and the size can be reduced.
According to variation 1 of embodiment 9, a color tone control circuit for LED lighting that can be reduced in size, cost, and efficiency can be provided.
(modification 2)
A detailed circuit configuration of the LED lighting tone control circuit 1 according to variation 2 of embodiment 9 is shown in fig. 19.
LED lighting device according to variation 2 of embodiment 9The color modulation control circuit 1 includes a PFC circuit 16 and an LED driver 20 for 2-color light application for a ceiling lamp1、202And a dimming/toning on/off control circuit 26. Here, in the LED driver 201Built-in LVREG 23R. In addition, the LED driver 201、202And PFC circuit 16 is built into integrated circuit 114. The integrated circuit 114 has a low voltage output terminal LT so that power can be supplied to the external dimming/toning on/off control circuit 26. Here, the LVREG23R can supply a low voltage to the dimming/toning on/off control circuit 26 via the low voltage output terminal LT. To LED driver 201、202The dimming/toning on/off control circuit 26 that supplies the control signals CS1, CS2 may also have a microcomputer. The other structure is the same as that of embodiment 7 shown in fig. 10.
According to the color modulation control circuit 1 for LED lighting of variation 2 of embodiment 9, the color modulation control circuit is incorporated in the LED driver 201The LVREG23R supplies a low voltage source for the dimming/toning on/off control circuit 26, and therefore, a separate low voltage source is not required and the size can be reduced.
According to variation 1 of embodiment 9, a color tone control circuit for LED lighting that can be reduced in size, cost, and efficiency can be provided.
According to the embodiment, the color mixing control circuit for the LED illumination can realize miniaturization, low cost and high efficiency.
[ other embodiments ]
As described above, although the LED lighting color modulation control circuit according to the embodiment is described, the description and drawings forming a part of the disclosure are illustrative and should not be construed as limiting the invention. Various alternative embodiments, examples, and operation techniques will be apparent to those skilled in the art from this disclosure.
As described above, the present invention includes various embodiments not described herein.
[ industrial applicability ]
The color modulation control circuit for LED lighting according to the present embodiment can be applied to a wide range of application fields such as a battery charging circuit (time shift charging) for LED lighting equipment and wireless equipment.
[ description of symbols ]
1. Color modulation control circuit for 1A LED illumination
10 AC power supply
12 input Filter (FLT)
14 diode bridge
15 DC/DC converter
16. 16A, 17 Power Factor Correction (PFC) circuit
181A、182A、183A、…、18nA current control circuit
201、202、、203、…、20n、201A、202A、203A、…、20nDriver for A LED illumination
221A、222A、223A、…、22nA. Built-in power supply (low voltage source) for 22P, 24A, 28 LV circuit
23、23A LDO
23R Low Voltage Regulator (LVREG)
26. 26A dimming and toning on-off control circuit
27. 27A microcomputer
30 output current value adjustment control circuit
32 constant current control circuit
90. 92, 100, 102, 104, 106, 108, 110, 112, 114 Integrated Circuits (ICs)
CS1, CS2, CS3, …, CSn control signals
LT low voltage output terminal
Claims (20)
1. A color modulation control circuit for LED illumination is characterized by comprising: a power factor correction circuit;
the constant current control circuit is connected with the power factor correction circuit and outputs constant current;
a low voltage source built in the constant current control circuit and outputting a relatively low voltage; and
an output current value adjustment control circuit connected to the low voltage source, adjusting an output current value of the constant current control circuit, and supplying a control signal to the constant current control circuit; and is
The low-voltage source for the output current value adjustment control circuit is configured so that the constant current control circuit for constant current output also serves as a low-voltage output.
2. The LED lighting color-mixing control circuit according to claim 1, comprising: an AC power source;
an input filter connected to the AC power supply; and
a diode bridge connected to the input filter; and is
The power factor correction circuit is connected to the output of the diode bridge.
3. The LED lighting color modulation control circuit according to claim 1 or 2, wherein: the constant current control circuit includes an LED lighting driver.
4. The LED lighting color-mixing control circuit according to claim 3, wherein: the output current value adjusting control circuit comprises a dimming and toning on-off control circuit for adjusting the output current value of the LED illumination driver.
5. A color modulation control circuit for LED illumination is characterized by comprising: a power factor correction circuit with a built-in low voltage regulator;
the 1 st LED driver and the 2 nd LED driver are connected in parallel with the output of the power factor correction circuit; and
a dimming/toning on/off control circuit connected to the power factor correction circuit and supplying a 1 st control signal and a 2 nd control signal to the 1 st LED driver and the 2 nd LED driver, respectively; and is
The low voltage output of the low voltage regulator may be supplied to the dimming, toning on off control circuit.
6. The LED lighting color-mixing control circuit according to claim 5, wherein: the low voltage regulator is an LDO.
7. The color modulation control circuit for LED lighting according to claim 5 or 6, wherein: the power factor correction circuit, the 1 st LED driver and the 2 nd LED driver are arranged in a 1 st integrated circuit.
8. The color modulation control circuit for LED lighting according to claim 5 or 6, wherein: the power factor correction circuit and the 1 st LED driver are arranged in a 2 nd integrated circuit.
9. The color modulation control circuit for LED lighting according to claim 5 or 6, wherein: the dimming and toning on-off control circuit is provided with a microcomputer.
10. A color modulation control circuit for LED illumination is characterized by comprising: a power factor correction circuit;
the low voltage regulator is connected with the power factor correction circuit;
the 1 st LED driver and the 2 nd LED driver are connected in parallel with the output of the power factor correction circuit; and
a dimming/toning on/off control circuit connected to the low voltage regulator and configured to supply a 1 st control signal and a 2 nd control signal to the 1 st LED driver and the 2 nd LED driver, respectively; and is
The light modulation and color modulation switch also comprises a low-voltage output terminal so as to supply power for the light modulation and color modulation switch-on and switch-off control circuit;
a low voltage output of the low voltage regulator is suppliable to the dimming, toning on/off control circuit via the low voltage output terminal;
the low voltage regulator is internally arranged in the power factor correction circuit.
11. A color modulation control circuit for LED illumination is characterized by comprising: a power factor correction circuit;
the low voltage regulator is connected with the power factor correction circuit;
the 1 st LED driver and the 2 nd LED driver are connected in parallel with the output of the power factor correction circuit; and
a dimming/toning on/off control circuit connected to the low voltage regulator and configured to supply a 1 st control signal and a 2 nd control signal to the 1 st LED driver and the 2 nd LED driver, respectively; and is
The light modulation and color modulation switch also comprises a low-voltage output terminal so as to supply power for the light modulation and color modulation switch-on and switch-off control circuit;
a low voltage output of the low voltage regulator is suppliable to the dimming, toning on/off control circuit via the low voltage output terminal;
the low voltage regulator is built in the No. 1LED driver.
12. The LED lighting color modulation control circuit according to claim 10 or 11, wherein: the power factor correction circuit, the low voltage regulator, and the 1 st LED driver are built into a 3 rd integrated circuit.
13. The LED lighting color modulation control circuit according to claim 10 or 11, wherein: the power factor correction circuit and the low voltage regulator are built into a 4 th integrated circuit.
14. The LED lighting color modulation control circuit according to claim 10 or 11, wherein: the low voltage regulator and the 1 st LED driver are built into a 5 th integrated circuit.
15. The LED lighting color modulation control circuit according to claim 10 or 11, wherein: the low voltage regulator, the 1 st LED driver, and the 2 nd LED driver are built into a 6 th integrated circuit.
16. The LED lighting color modulation control circuit according to claim 10 or 11, wherein: the dimming and toning on-off control circuit is provided with a microcomputer.
17. The LED lighting toning control circuit according to claim 10 or 11, comprising: an AC power source;
an input filter connected to the AC power supply; and
a diode bridge connected to the input filter; and is
The power factor correction circuit is connected to the output of the diode bridge.
18. The LED lighting tone control circuit according to claim 17, further comprising a PFC MOSFET disposed between an output of the diode bridge and a ground potential, and the power factor correction circuit controls on/off of the PFC MOSFET.
19. The LED lighting toning control circuit according to claim 17, comprising: a 1 st flyback transformer and a 2 nd flyback transformer connected in parallel to an output of the diode bridge;
a 1 st switching MOSFET and a 1 st current sense resistor connected in series between a primary side inductor of the 1 st flyback transformer and a ground potential; and
a 2 nd switching MOSFET and a 2 nd current sense resistor connected in series between a primary side inductor of the 2 nd flyback transformer and a ground potential; and is
The 1 st switching MOSFET and the 2 nd switching MOSFET are controlled to be turned on and off by the 1 st LED driver and the 2 nd LED driver, and thereby a current flowing to the primary side inductor can be controlled.
20. The LED lighting color-mixing control circuit according to claim 19, comprising: a 1 st LED connected to a 2 nd side inductor of the 1 st flyback transformer; and
and the 2 nd LED is connected with the 2 nd secondary side inductor of the 2 nd flyback transformer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014168675A JP2016046045A (en) | 2014-08-21 | 2014-08-21 | Color matching control circuit for led lighting |
| JP2014-168675 | 2014-08-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105392243A CN105392243A (en) | 2016-03-09 |
| CN105392243B true CN105392243B (en) | 2020-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510474497.5A Expired - Fee Related CN105392243B (en) | 2014-08-21 | 2015-08-05 | Color modulation control circuit for LED illumination |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2016046045A (en) |
| CN (1) | CN105392243B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10554118B2 (en) | 2017-06-22 | 2020-02-04 | Rohm Co., Ltd. | Power supply device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201667745U (en) * | 2010-01-26 | 2010-12-08 | 威海半岛东电子有限公司 | Intelligent dimming tri-color LED street lamp controller |
| CN202738239U (en) * | 2012-08-17 | 2013-02-13 | 王晋泉 | Electronic ballast for metal halide lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101382226B1 (en) * | 2012-04-20 | 2014-04-10 | 주식회사 하이딥 | Led lighting device using ballaster for fluorescent lamp |
-
2014
- 2014-08-21 JP JP2014168675A patent/JP2016046045A/en active Pending
-
2015
- 2015-08-05 CN CN201510474497.5A patent/CN105392243B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201667745U (en) * | 2010-01-26 | 2010-12-08 | 威海半岛东电子有限公司 | Intelligent dimming tri-color LED street lamp controller |
| CN202738239U (en) * | 2012-08-17 | 2013-02-13 | 王晋泉 | Electronic ballast for metal halide lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105392243A (en) | 2016-03-09 |
| JP2016046045A (en) | 2016-04-04 |
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