Multi-gear dial color temperature and current adjusting DALI and 0-10V integrated constant current driving power supply

Abstract

The invention discloses a multi-gear dial color temperature and current adjusting DALI and 0-10V integrated constant current driving power supply which comprises an EMI circuit, a rectifying circuit, an active and passive bleeder circuit, a single-stage PFC flyback circuit, a low-power-consumption high-voltage starting circuit, a BUCK circuit, a color temperature control circuit, a DALI and 0-10V dimming circuit and a gear dial color temperature and current adjusting circuit. The duty ratio of input PWM signals of the DALI and the MO301 on the 0-10V dimming circuit can be adjusted by dialing the dial SW2, so that the light-emitting proportion of the two LED light sources is adjusted, and the purpose of color modulation is achieved. Eight-gear color temperature can be adjusted through two paths of LED output current complementary dial codes, and the total current is not changed in the color adjusting process and is equal to the current of a constant current source; and a dial SW301 is connected to current sampling of a CS pin of the current adjusting circuit U201 to realize accurate multi-gear current control.

Description

Technical Field

[0001] The invention relates to the technical field of LED driving power supplies, in particular to a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply. Background Art

[0002] In the current market, it is difficult to achieve a power supply with multiple dimming functions in one when the power supply is small. LED lighting driver power supplies are developing towards intelligence, high efficiency and small size. They provide multiple dimming methods in a small size as much as possible, with a wide current range and output voltage range, so that customers can have more choices and matching. For this reason, we have developed a constant current driver power supply that integrates multiple dimming, color adjustment, current adjustment and wide output range. Summary of the invention

[0003] The object of the present invention is to provide a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current drive power supply, including an EMI circuit, a rectifier circuit, an active and passive discharge circuit, a single-stage PFC flyback circuit, a low-power high-voltage startup circuit, a BUCK circuit, a color temperature control circuit, a DALI and 0-10V dimming circuit, and a multi-speed dial color temperature and current adjustment circuit;

[0005] One end of the EMI circuit is electrically connected to the rectifier circuit using an active or passive discharge circuit, one end of the rectifier circuit is electrically connected to a low-power high-voltage startup circuit and a single-stage PFC flyback circuit respectively, the single-stage PFC flyback circuit is electrically connected to a BUCK circuit, the BUCK circuit is electrically connected to a color temperature control circuit, the DALI and 0-10V dimming circuit are signal-connected to the BUCK circuit, and the multi-speed dial color temperature and current adjustment circuit is electrically connected to the DALI and 0-10V dimming circuit.

[0006] As a further improvement of the present invention, the multi-speed dial color temperature and current adjustment circuit includes SW2, the first pin of the SW2 is respectively connected to AGND, DALI and CY1 on the 0-10V dimming circuit, the second pin, the third pin and the fourth pin of the SW2 are respectively connected to RS1, RS2 and RS3, RS1, RS2 and RS3 are connected in parallel and are respectively connected to RS304 and SW, and one end of the RS304 is connected to AGND.

[0007] As a further improvement of the present invention, the multi-speed dial color temperature and current adjustment circuit also includes SW301, the 1st pin, the 2nd pin and the 3rd pin of the SW301 are respectively connected to RS301, RS302 and RS303, RS301, RS302 and RS303 are connected in parallel and then connected to RI301, RI302, the single-stage PFC flyback circuit and the BUCK circuit respectively, the RI301 and RI302 are connected in parallel and then connected to the 4th pin, the 5th pin and the 6th pin of the parallel SW301.

[0008] As a further improvement of the present invention, the DALI and 0-10V dimming circuit includes MO301 and T100-D, the 9 pins on the T100-D are respectively connected to Q1, CE3, R313, R8, C4 and the SGND pin of MO301, the 10 pins on the T100-D are respectively connected to Q2, S120, and R310 in sequence, one end of the R310 is respectively connected to one end of CE3, one end of R313 and the PVDD pin on MO301 in sequence, one end of C4 is connected to the DIM+ pin of MO301, and the SGND pin of MO301 is connected to CY1.

[0009] As a further improvement of the present invention, the pin PWM2 of MO301 on the DALI and 0-10V dimming circuit is connected to the pin 2 PWM on the chip U201.

[0010] As a further improvement of the present invention, the single-stage PFC flyback circuit includes U101, T100, D201, and CE201. The first pin of U101 is respectively connected to R113, CE101 and C105, the sixth pin of U101 is connected to D103 and R103, D103 and R103 are connected in parallel and then connected to Q101, Q101 and C1 are connected in parallel and then connected to the third pin of T100, the sixth pin of T100 is respectively connected to D201 and R7, D201 and R7 are respectively connected in series with C21 and C2 and then connected in parallel to one end of CE201, and CE201 is respectively connected in parallel with C201, R202 and C202.

[0011] As a further improvement of the present invention, the D201 rectifier outputs a stable voltage to supply power to the BUCK circuit.

[0012] As a further improvement of the present invention, the BUCK circuit includes D303 and U201, the first pin of U201 is respectively connected to R1 and C305, the two ends of R1 and C305 connected in series are respectively connected to the two ends of CE1, the two ends of R304, the seventh pin of T100 and one end of R300, the other end of R300 is connected to D303, and one end of D303 is connected to the second pin of T100.

[0013] As a further improvement of the present invention, the low-power high-voltage starting circuit includes Q102, one end of Q102 is connected to R102, one end of R102 is connected to R103, one end of R103 is connected to R100, one end of R100 is connected to R101, and one end of R101 is respectively connected to the other end of U101 and Q102.

[0014] As a further improvement of the present invention, the active and passive discharge circuit includes CX101, R2, and R3, the two ends of the CX101 are respectively connected to one end of R2 and one end of R3, the other ends of R2 and R3 are connected, and the two ends of the CX101 are respectively connected to the two ends of RV1.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The multi-level dial color temperature and current adjustment DALI and 0-10V integrated constant current driver power supply can adjust the duty cycle of the input PWM signal of MO301 on the DALI and 0-10V dimming circuits by turning the dial SW2 to adjust the luminous ratio of the two LED light sources, thereby achieving the purpose of color adjustment; the two-way LED output current complementary dial can adjust eight levels of color temperature, and the total current remains unchanged during the color adjustment process, which is equal to the current of the constant current source; the dial SW301 is connected to the current sampling of the CS pin of the current adjustment circuit U201 to achieve accurate multi-level current control; the MO301 pin PWM2 on the DALI and 0-10V dimming circuits is connected to the 2-pin PWM of the chip U201, providing a high-level power supply to output normal brightness, plus DALI device adjustment, which can control the brightness, and the dimming mode supports push dim / DALI200 / DALI panel; 0-10V supports three-in-one dimming, and a lightning protection device RV1 is added at the input end to protect the circuit from lightning strikes, effectively protecting the reliability of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a circuit principle block diagram of a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current drive power supply of the present invention;

[0019] Figure 2This is a schematic diagram of a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current drive power supply of the present invention;

[0020] Figure 3 A multi-speed dial color temperature and current adjustment circuit diagram of a multi-speed dial color temperature and current adjustment DALI and a 0-10V integrated constant current drive power supply of the present invention;

[0021] Figure 4 A DALI and 0-10V dimming circuit diagram of a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current drive power supply of the present invention;

[0022] Figure 5 A color temperature control circuit diagram of a multi-speed dial color temperature and current adjustment DALI and a 0-10V integrated constant current drive power supply of the present invention;

[0023] Figure 6 This is a BUCK circuit diagram of a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current drive power supply of the present invention;

[0024] Figure 7 The present invention discloses a PFC flyback circuit diagram of a multi-speed dial color temperature and current adjustment DALI and a 0-10V integrated constant current drive power supply. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 7 The present invention provides a multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply, including an EMI circuit, a rectifier circuit, an active and passive discharge circuit, a single-stage PFC flyback circuit, a low-power high-voltage starting circuit, a BUCK circuit, a color temperature control circuit, a DALI and 0-10V dimming circuit and a multi-speed dial color temperature and current adjustment circuit.

[0027] One end of the EMI circuit is electrically connected to the rectifier circuit using an active or passive discharge circuit, one end of the rectifier circuit is electrically connected to a low-power high-voltage startup circuit and a single-stage PFC flyback circuit respectively, the single-stage PFC flyback circuit is electrically connected to the BUCK circuit, the BUCK circuit is electrically connected to the color temperature control circuit, the DALI and 0-10V dimming circuit are signal-connected to the BUCK circuit, and the multi-speed dial color temperature and current adjustment circuit is electrically connected to the DALI and 0-10V dimming circuit.

[0028] In one embodiment of the present invention, a multi-speed dial color temperature and current adjustment circuit includes SW2, the first pin of SW2 is respectively connected to AGND, DALI and CY1 on the 0-10V dimming circuit, the second pin, the third pin and the fourth pin of SW2 are respectively connected to RS1, RS2 and RS3, RS1, RS2 and RS3 are connected in parallel and are respectively connected to RS304 and SW, and one end of RS304 is connected to AGND.

[0029] This power supply has multiple color temperatures, multiple dimming and multiple current options, high efficiency and a wide output voltage range. Under the condition of a wide voltage output range, various dimming methods can have excellent dimming effects, and the small size makes it easy to apply in multiple usage scenarios.

[0030] In one embodiment of the present invention, the multi-speed dial color temperature and current adjustment circuit also includes SW301, the 1st pin, the 2nd pin and the 3rd pin of SW301 are respectively connected to RS301, RS302 and RS303, RS301, RS302 and RS303 are connected in parallel and then connected to RI301, RI302, a single-stage PFC flyback circuit and a BUCK circuit respectively, RI301 and RI302 are connected in parallel and then connected to the 4th pin, the 5th pin and the 6th pin of the parallel SW301.

[0031] In one embodiment of the present invention, the DALI and 0-10V dimming circuit includes MO301 and T100-D, the 9 pins on T100-D are respectively connected to Q1, CE3, R313, R8, C4 and the SGND pin of MO301, the 10 pins on T100-D are respectively connected to Q2, S120, R310 in sequence, one end of R310 is respectively connected to one end of CE3, one end of R313 and the PVDD pin on MO301 in sequence, one end of C4 is connected to the DIM+ pin of MO301, and the SGND pin of MO301 is connected to CY1.

[0032] In one embodiment of the present invention, the PWM2 pin of MO301 on the DALI and 0-10V dimming circuit is connected to the PWM pin 2 on the chip U201.

[0033] In one embodiment of the present invention, a single-stage PFC flyback circuit includes U101, T100, D201, and CE201. The first pin of U101 is respectively connected to R113, CE101, and C105. The sixth pin of U101 is connected to D103 and R103. D103 and R103 are connected in parallel and then connected to Q101. Q101 and C1 are connected in parallel and then connected to the third pin of T100. The sixth pin of T100 is respectively connected to D201 and R7. D201 and R7 are respectively connected in series with C21 and C2 and then connected in parallel to one end of CE201. CE201 is respectively connected in parallel with C201, R202, and C202.

[0034] In one embodiment of the present invention, D201 rectifies and outputs a stable voltage to supply power to the BUCK circuit.

[0035] In one embodiment of the present invention, the BUCK circuit includes D303 and U201, the first pin of U201 is respectively connected to R1 and C305, the two ends of R1 and C305 connected in series are respectively connected to the two ends of CE1, the two ends of R304, the seventh pin of T100 and one end of R300, the other end of R300 is connected to D303, and one end of D303 is connected to the second pin of T100.

[0036] In one embodiment of the present invention, the low-power high-voltage starting circuit includes Q102, one end of Q102 is connected to R102, one end of R102 is connected to R103, one end of R103 is connected to R100, one end of R100 is connected to R101, and one end of R101 is respectively connected to the other end of U101 and Q102.

[0037] In one embodiment of the present invention, the active and passive discharge circuit includes CX101, R2, and R3, two ends of CX101 are respectively connected to one end of R2 and one end of R3, the other ends of R2 and R3 are connected, and two ends of CX101 are respectively connected to two ends of RV1.

[0038] Working principle: The output end of the EMI circuit is connected to the input end of the rectifier circuit, through the EMC rectifier filter circuit, and then through the rectifier circuit, the AC is rectified into DC, VCC power supply circuit, when the input is turned on, the input can be connected to the mains 176Vac-264Vac.

[0039] Through the EMC rectification and filtering circuit, and then through the rectification circuit, the AC is rectified into DC, and the low-power high-voltage startup circuit. When the input is turned on, Q102 on the MOS of the low-power high-voltage startup circuit is turned on, and the chip U101 on the single-stage PFC flyback circuit works. The transformer T100 and the VCC winding provide a stable 15V voltage, and the power supply works.

[0040] Transformer T100 is coupled to the secondary side, and is rectified by diode D201 on the single-stage PFC flyback circuit to output a stable voltage to power the BUCK circuit. It also provides voltage. At this time, capacitor CE201 on the single-stage PFC flyback circuit supplies power to the PFC, BUCK and dimming circuits respectively. The secondary side VCC winding is rectified by D303 on the BUCK circuit to provide a stable voltage, which is respectively supplied to U201 on the BUCK circuit, U302 chip on the color temperature control circuit, and MO301 on the DALI and 0-10V dimming circuits, thereby outputting a stable current and voltage.

[0041] By turning the dial SW2, the duty cycle of the input PWM signal of MO301 on the DALI and 0-10V dimming circuit can be adjusted to adjust the luminous ratio of the two LED light sources, thereby achieving the purpose of color adjustment; the two LED output current complementary dials can adjust eight levels of color temperature. During the color adjustment process, the total current remains unchanged and is equal to the current of the constant current source.

[0042] The switch SW301 is connected to the current sampling of the CS pin of the current regulating circuit U201 to achieve accurate multi-speed current control.

[0043] The PWM2 pin of MO301 on the DALI and 0-10V dimming circuit is connected to the 2-pin PWM of the chip U201, providing a high-level power supply to output normal brightness, plus DALI device adjustment, which can control the brightness. The dimming mode supports pushdim / DALI200 / DALI panel. 0-10V supports three-in-one dimming (0 / 1-10V active signal / adjustable resistor / PWM signal); a lightning protection device (RV1) is added to the input end to ensure that the circuit is not broken down by lightning, effectively protecting the reliability of the circuit.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current drive power supply, characterized in that: Including EMI circuit, rectifier circuit, active and passive discharge circuit, single-stage PFC flyback circuit, low-power high-voltage startup circuit, BUCK circuit, color temperature control circuit, DALI and 0-10V dimming circuit and multi-speed dial color temperature and current adjustment circuit; One end of the EMI circuit is electrically connected to the rectifier circuit using an active or passive discharge circuit, one end of the rectifier circuit is electrically connected to a low-power high-voltage startup circuit and a single-stage PFC flyback circuit respectively, the single-stage PFC flyback circuit is electrically connected to a BUCK circuit, the BUCK circuit is electrically connected to a color temperature control circuit, the DALI and 0-10V dimming circuit are signal-connected to the BUCK circuit, and the multi-speed dial color temperature and current adjustment circuit is electrically connected to the DALI and 0-10V dimming circuit.

2. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 1, characterized in that: The multi-speed dial color temperature and current adjustment circuit includes SW2, the first pin of the SW2 is respectively connected to AGND, DALI and CY1 on the 0-10V dimming circuit, the second pin, the third pin and the fourth pin of the SW2 are respectively connected to RS1, RS2 and RS3, RS1, RS2 and RS3 are connected in parallel and are respectively connected to RS304 and SW, and one end of the RS304 is connected to AGND.

3. A multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current drive power supply according to claim 2, characterized in that: The multi-speed dial color temperature and current adjustment circuit also includes SW301, the 1st pin, the 2nd pin and the 3rd pin of the SW301 are respectively connected to RS301, RS302 and RS303, RS301, RS302 and RS303 are respectively connected to RI301, RI302, a single-stage PFC flyback circuit and a BUCK circuit, and the RI301 and RI302 are connected in parallel and then connected to the 4th pin, the 5th pin and the 6th pin of the parallel SW301.

4. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 1, characterized in that: The DALI and 0-10V dimming circuit includes MO301 and T100-D, wherein the 9 pins on the T100-D are respectively connected to Q1, CE3, R313, R8, C4 and the SGND pin of MO301, and the 10 pins on the T100-D are respectively connected to Q2, S120, and R310 in sequence, one end of the R310 is respectively connected to one end of CE3, one end of R313 and the PVDD pin on MO301 in sequence, one end of C4 is connected to the DIM+ pin of MO301, and the SGND pin of MO301 is connected to CY1.

5. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 4, characterized in that: The PWM2 pin of MO301 on the DALI and 0-10V dimming circuit is connected to the PWM pin 2 on the chip U201.

6. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 1, characterized in that: The single-stage PFC flyback circuit includes U101, T100, D201, and CE201. The first pin of U101 is connected to R113, CE101, and C105 respectively. The sixth pin of U101 is connected to D103 and R103. D103 and R103 are connected in parallel and then connected to Q101. Q101 and C1 are connected in parallel and then connected to the third pin of T100. The sixth pin of T100 is connected to D201 and R7 respectively. D201 and R7 are connected in series with C21 and C2 respectively and then connected in parallel to one end of CE201. CE201 is connected in parallel with C201, R202, and C202 respectively.

7. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 6, characterized in that: The D201 rectifies and outputs a stable voltage to supply power to the BUCK circuit.

8. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 6, characterized in that: The BUCK circuit includes D303 and U201, the first pin of U201 is connected to R1 and C305 respectively, the two ends of R1 and C305 connected in series are respectively connected to the two ends of CE1, the two ends of R304, the seventh pin of T100 and one end of R300, the other end of R300 is connected to D303, and one end of D303 is connected to the second pin of T100.

9. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 1, characterized in that: The low power consumption high voltage starting circuit comprises Q102, one end of Q102 is connected to R102, one end of R102 is connected to R103, one end of R103 is connected to R100, one end of R100 is connected to R101, and one end of R101 is respectively connected to the other ends of U101 and Q102.

10. The multi-speed dial color temperature and current adjustment DALI and 0-10V integrated constant current driving power supply according to claim 1, characterized in that: The active and passive discharge circuit includes CX101, R2, and R3. Two ends of the CX101 are respectively connected to one end of R2 and one end of R3. The other ends of R2 and R3 are connected. Two ends of the CX101 are respectively connected to two ends of RV1.

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