CN220067731U - DC lighting driving power supply - Google Patents
DC lighting driving power supply Download PDFInfo
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- CN220067731U CN220067731U CN202320968960.1U CN202320968960U CN220067731U CN 220067731 U CN220067731 U CN 220067731U CN 202320968960 U CN202320968960 U CN 202320968960U CN 220067731 U CN220067731 U CN 220067731U
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Abstract
The utility model discloses a direct-current illumination driving power supply, which is characterized in that the input of a direct-current strong-current cable is filtered through a filter circuit, then a carrier signal decoupling circuit is used for decoupling a dimming signal in an electric signal from the strong decoupling circuit, a control circuit is used for receiving the dimming signal and then changing a PWM output signal to control a dimming circuit to realize the adjustment of the brightness and the color temperature of a lamp, and a dial circuit is arranged, so that after the address information in the dimming signal is identified by the control circuit, when the address set by the dial circuit corresponds to the address information in the dimming information, the dimming circuit is controlled, and the address partition is arranged on the driving power supply, so that when the direct-current illumination driving power supply is applied to a multi-LED lamp control scene, namely a plurality of driving power supplies are connected into the circuit in parallel, the dimming can be performed aiming at the driving power supply corresponding to a single address or the driving power supplies corresponding to a plurality of addresses are simultaneously dimmed, and communication cables and AC coupling/decoupling equipment are not required to be added, so that the circuit cost is reduced while the dimming of a plurality of lamps in a loop is realized.
Description
Technical Field
The utility model relates to the technical field of lighting circuits, in particular to a direct-current lighting driving power supply.
Background
At present, the traditional multi-LED lamp is mainly controlled in a distributed mode. Control of each LED lamp is achieved by providing a rectifier, a power factor correction circuit, and an AC coupling/decoupling device in each LED lamp drive. Although the distributed mode can realize the control of the multi-LED lamp, the realization cost is higher and the circuit is complex.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: a DC lighting driving power supply can realize dimming and color temperature adjustment of multiple lamps in a loop and simultaneously reduce circuit cost.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a DC lighting driving power supply comprises a filter circuit, a switching power supply control circuit, a carrier signal decoupling circuit, a control circuit and a dimming circuit; the input end of the filter circuit is used for inputting a direct current power supply, and the signal output end of the filter circuit is connected with the input end of the carrier signal decoupling circuit; the output end of the carrier signal decoupling circuit is connected with the signal input end of the control circuit; the signal output end of the control circuit is connected with the signal input end of the dimming circuit; the output end of the dimming circuit is used for being connected with an LED light source; and the power input end of the dimming circuit is connected with the power output end of the filter circuit.
Further, the dimming circuit comprises a first dimming branch and a second dimming branch; the output end of the first dimming branch is used for being connected with a first LED light source; the output end of the second dimming branch is used for being connected with a second LED light source; the power input end of the first dimming branch circuit and the power input end of the second dimming branch circuit are connected with the power output end of the filter circuit; the signal input end of the first dimming branch and the signal input end of the second dimming branch are connected with the signal output end of the control circuit.
Further, the first dimming branch and the second dimming branch comprise an optocoupler, a triode and a driving circuit; the base electrode of the triode is connected with the signal output end of the control circuit; the collector electrode or the emitter electrode of the triode is connected with the input side of the optocoupler; the output side of the optocoupler is connected with the driving circuit in parallel; the output side of the optocoupler is connected with the power supply output end of the filter circuit in series; the triode of the first dimming branch circuit is of an N type, and the triode of the second dimming branch circuit is of a P type; or the triode of the first dimming branch circuit is of a P type, and the triode of the second dimming branch circuit is of an N type.
Further, the carrier signal decoupling circuit comprises a first voltage dividing resistor, a second voltage dividing resistor, a third voltage dividing resistor and a first capacitor; one end of the first voltage dividing resistor is connected with the signal output end of the filter circuit; the other end of the first voltage dividing resistor is connected with one end of the second voltage dividing resistor and one end of the third voltage dividing resistor respectively; the other end of the third voltage dividing resistor is respectively connected with one end of the first capacitor and the signal input end of the control circuit; the other end of the first capacitor is connected with the second voltage dividing resistor.
Further, the power supply further comprises a first auxiliary power supply circuit and a second auxiliary power supply circuit; the input end of the first auxiliary power supply circuit is connected with the signal output end of the filter circuit; the output end of the first auxiliary power supply circuit is connected with the input end of the second auxiliary power supply circuit; the output end of the second auxiliary power supply circuit is connected with the power supply input end of the control circuit; the output voltage value of the first auxiliary power supply circuit is different from the output voltage value of the second auxiliary power supply circuit.
Further, the circuit also comprises an I2C circuit; the input end of the I2C circuit is connected with the output end of the second auxiliary power supply circuit; and the output end of the I2C circuit is connected with an even number and the I2C port of the control circuit.
Further, the power supply control circuit and the signal detection circuit are also included; the first power input end of the signal detection circuit is connected with the signal output end of the filter circuit; the second power input end of the signal detection circuit is connected with the output end of the first auxiliary power circuit; the output end of the signal detection circuit is connected with the signal input end of the switching power supply control circuit; and the signal output end of the switching power supply control circuit is connected with the signal input end of the filter circuit.
Further, the device also comprises a dialing circuit; the output end of the dialing circuit is connected with the address input end of the control circuit, and the dialing circuit is used for setting address information.
The utility model has the beneficial effects that: the input of the direct current strong current cable is filtered through the filter circuit, the carrier signal decoupling circuit is used for decoupling the dimming signal and the strong voltage in the filtered electric signal, the PWM output signal is changed to control the dimming circuit to realize the adjustment of the brightness and the color temperature of the lamp after the dimming signal is received through the control circuit, and the dialing circuit is arranged, so that after the address information in the dimming signal is identified by the control circuit, when the address set by the dialing circuit corresponds to the address information in the dimming information, the dimming circuit is controlled, and the address partition is arranged on the driving power supply, so that when the dimming circuit is applied to a multi-LED lamp control scene, namely a plurality of driving power supplies are connected into the circuit in parallel, the dimming can be carried out on the driving power supply corresponding to a single address or the driving power supply corresponding to a plurality of addresses simultaneously, and communication cables and AC coupling/decoupling equipment are not required to be added, so that the dimming color temperature of the multi-lamp in the circuit is realized, and the circuit cost is reduced.
Drawings
Fig. 1 is a schematic diagram of a module of a dc lighting driving power supply according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of an application scenario of a dc lighting driving power supply according to an embodiment of the present utility model;
fig. 3 is a schematic circuit diagram of a dc lighting driving power supply according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of a dimming circuit of a DC lighting driving power supply according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of a carrier signal decoupling circuit of a dc lighting driving power supply according to an embodiment of the present utility model;
FIG. 6 is a schematic diagram of an auxiliary power circuit of a DC lighting driving power supply according to an embodiment of the present utility model;
fig. 7 is a schematic diagram of a switching power supply control circuit, a signal detection circuit and an I2C circuit of a dc lighting driving power supply according to an embodiment of the present utility model;
FIG. 8 is a schematic diagram of a control circuit and a dialing circuit for a DC lighting driving power supply according to an embodiment of the present utility model;
FIG. 9 is a schematic diagram of a filter circuit of a DC lighting driving power supply according to an embodiment of the present utility model;
description of the reference numerals:
1. a filter circuit; 2. a switching power supply control circuit; 3. a carrier signal decoupling circuit; 4. a control circuit; 5. a dialing circuit; 6. a dimming circuit; 61. a first dimming branch; 62. a second dimming branch; 7. a first auxiliary power supply circuit; 8. a second auxiliary power supply circuit; 9. an I2C circuit; 10. and a detection circuit.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, a dc lighting driving power supply includes a filter circuit, a switching power supply control circuit, a carrier signal decoupling circuit, a control circuit and a dimming circuit; the input end of the filter circuit is used for inputting a direct current power supply, and the signal output end of the filter circuit is connected with the input end of the carrier signal decoupling circuit; the output end of the carrier signal decoupling circuit is connected with the signal input end of the control circuit; the signal output end of the control circuit is connected with the signal input end of the dimming circuit; the output end of the dimming circuit is used for being connected with an LED light source; and the power input end of the dimming circuit is connected with the power output end of the filter circuit.
From the above description, the beneficial effects of the utility model are as follows: the input of the direct current strong current cable is filtered through the filter circuit, the carrier signal decoupling circuit is used for decoupling the dimming signal in the filtered electric signal from the strong decoupling circuit, and the PWM output signal is changed to control the dimming circuit to realize the adjustment of the brightness and the color temperature of the lamp after the dimming signal is received through the control circuit, so that the corresponding control signal can be directly obtained from the direct current strong current without adding a communication cable and alternating current coupling/decoupling equipment, and the circuit cost is reduced.
Further, the dimming circuit comprises a first dimming branch and a second dimming branch; the output end of the first dimming branch is used for being connected with a first LED light source; the output end of the second dimming branch is used for being connected with a second LED light source; the power input end of the first dimming branch circuit and the power input end of the second dimming branch circuit are connected with the power output end of the filter circuit; the signal input end of the first dimming branch and the signal input end of the second dimming branch are connected with the signal output end of the control circuit.
As can be seen from the above description, the first dimming branch and the second dimming branch form a dimming circuit, and the first dimming branch and the second dimming branch are controlled by the same signal input, so that the first dimming branch and the second dimming branch respectively control different LED light sources, and thus the overall brightness and the color temperature variation of the lamp can be adjusted by the cooperation of the color temperatures and the brightness of the different LED light sources.
Further, the first dimming branch and the second dimming branch comprise an optocoupler, a triode and a driving circuit; the base electrode of the triode is connected with the signal output end of the control circuit; the collector electrode or the emitter electrode of the triode is connected with the input side of the optocoupler; the output side of the optocoupler is connected with the driving circuit in parallel; the output side of the optocoupler is connected with the power supply output end of the filter circuit in series; the triode of the first dimming branch circuit is of an N type, and the triode of the second dimming branch circuit is of a P type; or the triode of the first dimming branch circuit is of a P type, and the triode of the second dimming branch circuit is of an N type.
As can be seen from the above description, the first dimming branch and the second dimming branch adopt different types of triodes to process the input signal, so that when the input signal is at a high level, the first dimming branch/the second dimming branch is turned on, the second dimming branch/the first dimming branch is turned off, when the input signal is at a first level, the first dimming branch/the second dimming branch is turned off, and the second dimming branch/the first dimming branch is turned on, i.e. the first dimming branch and the second dimming branch are alternately turned on, so that different control combinations of the first dimming branch and the second dimming branch can be realized through PWM duty ratio change of the input signal, and further, adjustment of color temperature is realized.
Further, the carrier signal decoupling circuit comprises a first voltage dividing resistor, a second voltage dividing resistor, a third voltage dividing resistor and a first capacitor; one end of the first voltage dividing resistor is connected with the signal output end of the filter circuit; the other end of the first voltage dividing resistor is connected with one end of the second voltage dividing resistor and one end of the third voltage dividing resistor respectively; the other end of the third voltage dividing resistor is respectively connected with one end of the first capacitor and the signal input end of the control circuit; the other end of the first capacitor is connected with the second voltage dividing resistor.
As can be seen from the above description, since the control circuit cannot bear the high-voltage direct current, the first voltage dividing resistor, the second voltage dividing resistor and the third voltage dividing resistor form the voltage dividing circuit, the high-voltage direct current input by the filter circuit is converted into the low-voltage output, so that the control circuit can read and identify the converted low-voltage, and further control over the dimming circuit is realized.
Further, the power supply further comprises a first auxiliary power supply circuit and a second auxiliary power supply circuit; the input end of the first auxiliary power supply circuit is connected with the signal output end of the filter circuit; the output end of the first auxiliary power supply circuit is connected with the input end of the second auxiliary power supply circuit; the output end of the second auxiliary power supply circuit is connected with the power supply input end of the control circuit; the output voltage value of the first auxiliary power supply circuit is different from the output voltage value of the second auxiliary power supply circuit.
As can be seen from the above description, the first auxiliary power circuit and the second auxiliary power circuit are provided, and the high-voltage direct current input by the filter circuit is converted into the output with different low voltage values through the first auxiliary power circuit and the second auxiliary power circuit in sequence, so that the stable low voltage is provided for the circuit module in the driving power supply, and the driving power supply stably works.
Further, the circuit also comprises an I2C circuit; the input end of the I2C circuit is connected with the output end of the second auxiliary power supply circuit; and the output end of the I2C circuit is connected with an even number and the I2C port of the control circuit.
As can be seen from the above description, by setting the I2C circuit and correspondingly connecting the I2C circuit with the I2C port of the control circuit, the I2C port of the control circuit can be effectively protected, and the stability of the data transmission of the I2C port of the control circuit can be improved.
Further, the power supply control circuit and the signal detection circuit are also included; the first power input end of the signal detection circuit is connected with the signal output end of the filter circuit; the second power input end of the signal detection circuit is connected with the output end of the first auxiliary power circuit; the output end of the signal detection circuit is connected with the signal input end of the switching power supply control circuit; and the signal output end of the switching power supply control circuit is connected with the signal input end of the filter circuit.
As can be seen from the above description, the signal detection circuit is provided to detect the dc high voltage output by the filter circuit, and output the detection result to the switching power supply control circuit, and then the switching power supply control circuit controls the output of the filter circuit, so as to control the brightness variation of the lamp by controlling the output power of the filter circuit.
Further, the device also comprises a dialing circuit; the output end of the dialing circuit is connected with the address input end of the control circuit, and the dialing circuit is used for setting address information.
As can be seen from the above description, by setting the dial circuit, the control circuit controls the dimming circuit only when the address set by the dial circuit corresponds to the address information in the dimming information after identifying the address information in the dimming signal, thereby realizing setting address partition for the driving power supply by using the dial circuit and controlling different driving power supplies more accurately and effectively.
The above-mentioned direct current illumination driving power supply of this embodiment can be applicable to many LED lamps and lanterns control, for example control many LED lamps and lanterns control scene such as the LED lamps and lanterns of different subregions in the market, the following explanation through concrete implementation:
example 1
Referring to fig. 1-3, a dc lighting driving power supply includes a filter circuit 1, a switching power supply control circuit 2, a carrier signal decoupling circuit 3, a control circuit 4, a dial circuit 5, and a dimming circuit 6; the distributed AC/DC rectifier in the traditional LED lamp driving is intensively arranged in the power supply cabinet, and the dimming information is coupled by utilizing the voltage low-frequency rise and fall of the high-voltage direct current and is transmitted to the decoding chip on the driving power supply for dimming.
Referring to fig. 3-9, an input end of the filter circuit 1 is used for inputting a dc power supply, and converting the mains supply into a strong dc voltage through a rectifier bridge and inputting the strong dc voltage into the filter circuit 1; the signal output end (HV) of the filter circuit 1 is connected with the input end of the carrier signal decoupling circuit 3 (HV); an output terminal (vdb_det) of the carrier signal decoupling circuit 3 is connected to a signal input terminal (vdb_det) of the control circuit 4; the signal output end (PWM) of the control circuit 4 is connected with the signal input end (PWM) of the dimming circuit 6; the output ends (LED 1/2-and LED 1/2+) of the dimming circuit 6 are used for being connected with an LED light source; the power input ends (LED-and LED+) of the dimming circuit 6 are connected with the power output end of the filter circuit 1; the output end of the dialing circuit 5 is connected with the address input end of the control circuit 4, and the dialing circuit 5 is used for setting address information, specifically: the singlechip detects the high and low levels of the pins of the dialing circuit 5 to identify the address code of the singlechip; the dimming protocol is provided with information such as address, dimming value and the like; after receiving the dimming protocol, judging whether control needs to be executed according to the address singlechip, so that dimming can be performed aiming at a single address or simultaneous dimming of a plurality of addresses; the power supply circuit further comprises an I2C circuit 9, wherein the input end of the I2C circuit 9 is connected with the output end of the second auxiliary power supply circuit 8; the output end of the I2C circuit 9 is connected with an even number and the I2C port of the control circuit 4.
The working principle of the direct current illumination driving power supply is as follows:
200-300V direct current is input into the driving power supply through a 1 strong current cable, after the filtering effect of the filtering circuit 1, the dimming signal in the filtered signal is subjected to strong decoupling and interpretation through the carrier signal decoupling circuit 3 to obtain a demodulated signal, then the demodulated signal is transmitted to the control circuit 4, the control circuit 4 generates a corresponding PWM signal according to the demodulated signal and outputs the corresponding PWM signal to the dimming circuit 6, and the dimming circuit 6 realizes the regulation and control of the brightness and the color temperature of the LED lamp after receiving the PWM signal from the control signal. The specific circuit structure and principle of the carrier signal decoupling circuit 3 and the dimming circuit 6 are as follows:
referring to fig. 4, the dimming circuit 6 includes a first dimming branch 61 and a second dimming branch 62; the output end of the first dimming branch 61 is used for being connected with a first LED light source (LED 1-and LED 1+); the output end of the second dimming branch 62 is used for being connected with a second LED light source (LED 2-and LED 2+), and the first LED light source and the second LED light source are light sources with different color temperatures; the power input end of the first dimming branch 61 and the power input end of the second dimming branch 62 are connected with the power output end of the filter circuit 1; the signal input of the first dimming branch 61 and the signal input of the second dimming branch 62 are connected to a signal output (PWM) of the control circuit 4; in an alternative embodiment, the first dimming branch 61 and the second dimming branch 62 each include an optocoupler, a triode, and a driving circuit; the base electrode of the triode is connected with the signal output end (PWM) of the control circuit 4; the collector electrode or the emitter electrode of the triode is connected with the input side of the optocoupler; the output side of the optocoupler is connected with the driving circuit in parallel; the output side of the optocoupler is connected with the power supply output end of the filter circuit 1 in series;
if the triode of the first dimming branch 61 is P-type, the triode of the second dimming branch 62 is N-type, at this time, in the first dimming branch 61, the emitter of the triode Q5 is connected with the input side of the optocoupler, and the collector thereof is grounded; in the second dimming branch 62, the collector of the triode Q6 is connected to the input side of the optocoupler, and the emitter thereof is grounded; or the triode of the first dimming branch 61 is N-type, and when the triode of the second dimming branch 62 is P-type, namely the logic complements of the first dimming branch 61 and the second dimming branch 62;
the specific principle of the dimming module is as follows: the first LED light source is an LED light source with a color temperature of 7k, and the second LED light source is an LED light source with a color temperature of 3 k; receiving the same PWM signal from the control unit through respective triodes of the first dimming branch 61 and the second dimming branch 62; wherein the duty cycle of the PWM signal comprises two segments of signals; brightness is adjusted to a first segment PWM signal, for example, a duty ratio of 1% represents brightness 1% and a duty ratio of 100% represents brightness 100%; the color temperature is adjusted to be a second segment PWM signal, for example, a duty cycle of 1% indicates that the color temperature is coldest, a duty cycle of 100% indicates that the color temperature is warmest, and because the triode of the first dimming branch 61 is logically complementary with the triode of the second dimming branch 62, that is, when the first dimming branch 61 is turned on/off, the second dimming branch 62 is turned off/on, so that the duty cycle of the PWM signal adjusts the duty cycle of the first LED light source and the second LED light source in one period, so that the color temperature of the whole color temperature LED lamp changes between 3k and 7k, and brightness adjustment is realized according to the first segment signal.
Referring to fig. 5, the carrier signal decoupling circuit 3 includes a first voltage dividing resistor, a second voltage dividing resistor, a third voltage dividing resistor and a first capacitor; one end of the first voltage dividing resistor is connected with a signal output end (HV) of the filter circuit 1; the other end of the first voltage dividing resistor is connected with one end of the second voltage dividing resistor and one end of the third voltage dividing resistor respectively; the other end of the third voltage dividing resistor is respectively connected with one end of the first capacitor and the signal input end (Vdb_DET) of the control circuit 4; the other end of the first capacitor is connected with the second voltage dividing resistor; the first voltage dividing resistor is composed of a resistor R19, a resistor R23 and a resistor R26, the second voltage dividing resistor includes a resistor R28, the third voltage dividing resistor includes a resistor R29, and the voltage dividing circuit is composed of the first voltage dividing resistor, the second voltage dividing resistor and the third voltage dividing resistor to divide the high-voltage direct current (HV) input by the filter circuit 1 and form a low-voltage output (vdb_det), so that the control circuit 4 receives the input low-voltage signal and then further controls the dimming circuit 6.
Referring to fig. 6, the power supply further includes a first auxiliary power supply circuit 7 and a second auxiliary power supply circuit 8; the input end (HV) of the first auxiliary power supply circuit 7 is connected with the signal output end (HV) of the filter circuit 1; the output (vcc_12) of the first auxiliary power supply circuit 7 is connected to the input (vcc_12) of the second auxiliary power supply circuit 8; the output terminals (+ 5V and p_gnd) of the second auxiliary power supply circuit 8 are connected to the power supply input terminal (+ 5V) of the control circuit 4; the output voltage value of the first auxiliary power supply circuit 7 is different from the output voltage value of the second auxiliary power supply circuit 8, and as shown in the figure, the output of the first auxiliary power supply circuit is 12V, and the output of the second auxiliary power supply circuit is 5V.
Referring to fig. 7, the switching power supply further includes a switching power supply control circuit 2 and a signal detection circuit 10; a first power supply input end of the signal detection circuit 10 is connected with a signal output end (HV) of the filter circuit 1; a second power input terminal of the signal detection circuit 10 is connected to an output terminal (VCC) of the first auxiliary power circuit 7; an output end (ZDC) of the signal detection circuit 10 is connected with a signal input end of the switching power supply control circuit 2; the signal output end of the switching power supply control circuit 2 is connected with the signal input end of the filter circuit 1, the signal detection circuit 10 is arranged to detect the direct current high voltage output by the filter circuit 1, meanwhile, the detection result is output to the switching power supply control circuit 2, the switching power supply control circuit 2 provides a control signal, namely, a MOS tube Q1 provides a switching signal to control the output of the filter circuit 1, and therefore the control of the brightness change of a lamp is realized by controlling the output power of the filter circuit 1.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (8)
1. The direct-current illumination driving power supply is characterized by comprising a filter circuit, a switching power supply control circuit, a carrier signal decoupling circuit, a control circuit and a dimming circuit;
the input end of the filter circuit is used for inputting a direct current power supply, and the signal output end of the filter circuit is connected with the input end of the carrier signal decoupling circuit;
the output end of the carrier signal decoupling circuit is connected with the signal input end of the control circuit;
the signal output end of the control circuit is connected with the signal input end of the dimming circuit; the output end of the dimming circuit is used for being connected with an LED light source; and the power input end of the dimming circuit is connected with the power output end of the filter circuit.
2. The direct current lighting drive power supply of claim 1, wherein the dimming circuit comprises a first dimming leg and a second dimming leg;
the output end of the first dimming branch is used for being connected with a first LED light source;
the output end of the second dimming branch is used for being connected with a second LED light source;
the power input end of the first dimming branch circuit and the power input end of the second dimming branch circuit are connected with the power output end of the filter circuit;
the signal input end of the first dimming branch and the signal input end of the second dimming branch are connected with the signal output end of the control circuit.
3. The direct current lighting driving power supply according to claim 2, wherein the first dimming branch and the second dimming branch each comprise an optocoupler, a triode and a driving circuit;
the base electrode of the triode is connected with the signal output end of the control circuit;
the collector electrode or the emitter electrode of the triode is connected with the input side of the optocoupler;
the output side of the optocoupler is connected with the driving circuit in parallel;
the output side of the optocoupler is connected with the power supply output end of the filter circuit in series;
the triode of the first dimming branch circuit is of an N type, and the triode of the second dimming branch circuit is of a P type;
or the triode of the first dimming branch circuit is of a P type, and the triode of the second dimming branch circuit is of an N type.
4. The direct current illumination driving power supply according to claim 1, wherein the carrier signal decoupling circuit comprises a first voltage dividing resistor, a second voltage dividing resistor, a third voltage dividing resistor and a first capacitor;
one end of the first voltage dividing resistor is connected with the signal output end of the filter circuit;
the other end of the first voltage dividing resistor is connected with one end of the second voltage dividing resistor and one end of the third voltage dividing resistor respectively;
the other end of the third voltage dividing resistor is respectively connected with one end of the first capacitor and the signal input end of the control circuit;
the other end of the first capacitor is connected with the second voltage dividing resistor.
5. The direct current illumination driving power supply according to claim 1, further comprising a first auxiliary power supply circuit and a second auxiliary power supply circuit;
the input end of the first auxiliary power supply circuit is connected with the signal output end of the filter circuit;
the output end of the first auxiliary power supply circuit is connected with the input end of the second auxiliary power supply circuit;
the output end of the second auxiliary power supply circuit is connected with the power supply input end of the control circuit;
the output voltage value of the first auxiliary power supply circuit is different from the output voltage value of the second auxiliary power supply circuit.
6. The dc lighting drive power supply of claim 5, further comprising an I2C circuit;
the input end of the I2C circuit is connected with the output end of the second auxiliary power supply circuit;
and the output end of the I2C circuit is connected with an even number and the I2C port of the control circuit.
7. The direct current illumination driving power supply according to claim 5, further comprising a switching power supply control circuit and a signal detection circuit;
the first power input end of the signal detection circuit is connected with the signal output end of the filter circuit;
the second power input end of the signal detection circuit is connected with the output end of the first auxiliary power circuit;
the output end of the signal detection circuit is connected with the signal input end of the switching power supply control circuit;
and the signal output end of the switching power supply control circuit is connected with the signal input end of the filter circuit.
8. The dc lighting drive power supply of claim 5, further comprising a dialing circuit;
the output end of the dialing circuit is connected with the address input end of the control circuit, and the dialing circuit is used for setting address information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320968960.1U CN220067731U (en) | 2023-04-19 | 2023-04-19 | DC lighting driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320968960.1U CN220067731U (en) | 2023-04-19 | 2023-04-19 | DC lighting driving power supply |
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| Publication Number | Publication Date |
|---|---|
| CN220067731U true CN220067731U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320968960.1U Active CN220067731U (en) | 2023-04-19 | 2023-04-19 | DC lighting driving power supply |
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| Country | Link |
|---|---|
| CN (1) | CN220067731U (en) |
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2023
- 2023-04-19 CN CN202320968960.1U patent/CN220067731U/en active Active
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