CN205610982U - LED lamp that LED lamp switch was adjusted luminance and is mixed colours and review drive circuit and have it - Google Patents

Abstract

The utility model provides an LED light switch dimming and color temperature driving circuit, including a surge suppression and rectification filter circuit, an EMI filter circuit, a dimming module control circuit, a color temperature module control circuit and two different color temperature LED light-emitting component circuits; The output end of the surge suppression and rectification filter circuit is connected to the input end of the EMI filter circuit, the output end of the EMI filter circuit is connected to the control end of the dimming module control circuit and the color temperature module control The input end of the circuit is connected, the output end of the control circuit of the dimming module is connected to the anodes of two LED light emitting component circuits with different color temperatures, the output end of the control circuit of the color temperature module is connected to the two LED light emitting component circuits with different color temperatures Negative connection. The color temperature mode is realized through the color temperature module control circuit, the whole control circuit is relatively simple, and the control cost is low.

Description

LED lamp switch dimming color temperature driving circuit and LED lamp with same

technical field

The utility model relates to the technical field of LED lighting dimming and coloring control circuit technology, in particular to an LED light switch dimming, coloring and temperature driving circuit and an LED lamp with the same.

Background technique

At present, the dimming and color schemes on the market mainly include the following methods:

The thyristor dimming method mainly changes the output current by adjusting the phase of the input voltage. However, the single thyristor dimming method currently on the market has a poor matching effect on lamps or cannot adjust the temperature.

For example, the Chinese patent application number CN201520098825.1, the publication date is 2015.07.15, the name of the patent application is a LED light switch dimming color temperature circuit, the circuit disclosed in this application includes a LED light switch dimming color temperature circuit , belonging to the field of LED lamp circuits, including a key switch, a thyristor dimmer, a power supply circuit, a dimming circuit and a color temperature circuit, the key switch is connected to the input terminal of the power supply circuit through the thyristor dimmer The power supply circuit is electrically connected to the light adjustment circuit and the color temperature circuit respectively, and the key switch is connected to the input terminal of the light adjustment circuit and the input of the color temperature circuit through the power supply circuit terminal, and the thyristor dimmer is connected to the input terminal of the dimming circuit through the power supply circuit. Compared with this dimming method, all outputs cannot be turned off, so all outputs cannot be completely turned off, and there is a problem of energy waste.

Another example is the Chinese patent application number CN201520572130.2, the publication date is 2015.11.25, and the name of the patent application is a kind of LED dimming and color temperature circuit, which is used to control the LED lights including at least one warm light string and at least one cold light string. The LED dimming and color temperature circuit includes a main controller for generating one PWM signal for dimming and one PWM signal for color temperature, a PWM control unit connected to the main controller, and a main controller connected to the main controller. The color temperature unit connected to the controller, the input side of the PWM control unit is connected to the AC input end through the rectification and filtering unit, and the output side is connected to the LED lamp string through the power control unit. Since the main controller controls the PWM control unit and the color temperature unit separately, the two signals are independent of each other, so the adjustment of the brightness of the LED light string will not cause the change of its color temperature. Similarly, the adjustment of its color temperature will not cause the change of the brightness . When the main controller is an N-bit MCU, the brightness adjustment and color temperature level of the utility model can reach 2 ^N × 2 ^N = 2 ^2N levels, and the brightness and color temperature of the light source can be precisely adjusted. Due to its circuit characteristics, due to the complexity of the circuit, the cost of implementation is high, and the switch control is complicated (need to use the control terminal), which makes the product unable to be applied in large quantities. Another example is the Chinese patent application number CN201520731548.3, the publication date is 2015.12.16, the name of the patent application is an LED power supply that supports dimming and color temperature adjustment, and relates to an LED power supply that supports dimming and color temperature adjustment. The LED power supply that supports dimming and color temperature includes a power drive module, a drive control module and a wireless control module; the power drive module is connected to the drive control module and the wireless control module respectively, and the wireless control module is wireless connect. The utility model adopts the integrated design of drive and control, with compact structure and convenient installation; it is directly controlled by WiFi or Bluetooth, supports the access of its own Internet of Things platform, and can realize the function of remote dimming, color adjustment and temperature control by mobile terminals such as mobile phones, no longer An external dimming controller is required, without additional controllers or gateway devices, so that traditional LED lamps can realize dimming and color adjustment functions through mobile terminals such as mobile phones without any modification, and can support remote control and management across public networks . Its disadvantages are that the circuit structure is complex, the cost of the solution is expensive, and the switch control is complicated (requiring the help of a control terminal), which is expensive and has a large gap with the current market acceptance, so it cannot be fully promoted and applied.

Due to the above and other reasons, many existing dimming and toning technical solutions cannot be widely applied to existing LED products and achieve the purpose of rapid market promotion. .

Utility model content

The utility model provides an LED lamp switch dimming, coloring and temperature driving circuit and an LED lamp having the same, in order to solve the above-mentioned technical problems of complex structure of the LED dimming and coloring circuit and expensive solution cost.

In order to solve the above technical problems, the utility model provides an LED light switch dimming and color temperature driving circuit, including surge suppression and rectification filter circuit, EMI filter circuit, dimming module control circuit, color temperature module control circuit and two different Color temperature LED lighting component circuit; the output end of the surge suppression and rectification filter circuit is connected to the input end of the EMI filter circuit, the output end of the EMI filter circuit is connected to the control end of the dimming module control circuit and the The input end of the control circuit of the color temperature module is connected, the output end of the control circuit of the light adjustment module is connected to the anodes of two LED light-emitting component circuits with different color temperatures, the output end of the control circuit of the color temperature module is connected to the two The negative poles of LED light emitting component circuits with different color temperatures are connected.

The beneficial effect of the utility model is that: the color temperature mode is realized through the color temperature module control circuit, the whole control circuit is relatively simple, and the control cost is low.

Further, the surge suppression and rectification filter circuit includes a MOV1 resistor, a DB1 rectifier bridge stack circuit, one end of the MOV1 resistor is connected to the L terminal of the circuit, and the other end of the MOV1 resistor is connected to the N terminal of the circuit, and the The input end of the DB1 rectification bridge stack circuit is connected to both ends of the MOV1 resistor, and the output end of the DB1 rectification bridge stack circuit is connected to the input end of the EMI filter circuit.

The beneficial effect of adopting the above-mentioned further solution is: through the surge suppression and rectification filter circuit composed of the MOV1 resistor and the DB1 rectifier bridge stack circuit, the high-voltage pulse energy of the line induction lightning can be effectively absorbed/released to prevent it from damaging the back-end components.

Further, the EMI filter circuit is composed of L1 inductor, Ce1 capacitor, and Ce2 capacitor to form a π-type filter circuit.

The beneficial effect of adopting the above further solution is: the electromagnetic interference generated by the circuit and the electromagnetic interference in the power grid are suppressed through the π-type filter circuit.

Further, the dimming module control circuit (A4) includes a main control chip PT6988, the internal high-power tube drain terminal of the PT6988 is connected to the output terminal of the EMI filter circuit (A3), and the output current of the PT6988 chip controls the sampling Terminal CS is externally connected in parallel with high-precision sampling resistors RS1, RS2, and the other terminal of RS1 and RS2 is connected to the output control SET terminal of the dimming module circuit chip PT6988 and the L3 inductance and Ce3 capacitance of the peak current control LC resonant circuit.

The beneficial effect of adopting the above-mentioned further solution is: since the main control chip PT6988 works in the critical conduction mode of the inductor L3, it is ensured that the current passing through L3 does not change with the change of the output voltage, and the output current is stable; at the same time, because the main control chip PT6988 embeds a high-voltage 500V MOS power tube, and adopts source drive control mode, the working current is low, no additional windings are needed for detection and power supply, and the system can still achieve better linear regulation and load regulation; at the same time, The main control chip PT6988 accurately controls the output current by controlling the peak current of the inductor L3 to control the total output current of the dimming. The voltage detected by RS1 and RS1 is detected by the CS pin of the chip and the internal peak threshold of the chip. The voltage is compared, and then the chip is notified whether to perform internal lock-off processing to ensure that the output current is stable.

Further, the color temperature module control circuit (A5) mainly includes a PT6920 LED color driver chip, the input terminal VIN of the chip PT6920 is externally connected to a capacitor C2, and is connected to the output terminal of the EMI filter circuit (A3) through a resistor R8, The output control pins DR1 and DR2 of the chip PT6920 are respectively connected to the negative poles of LED light-emitting component circuits (A6) of different color temperature groups; the maintenance power supply pin VDD of the chip PT6920 is connected in parallel with two capacitors C3, C4.

The beneficial effect of adopting the above-mentioned further solution is: the main control PT6920 color driver chip integrates an MCU inside, and the control strategy/program is solidified in the MCU as follows to realize the color temperature mode. Strategy implementation method: the first time the main control PT6920 color chip pin 3 outputs a high level, and the pin 4 outputs a low level, then the LED of the first line is on, and the LED of the second line is not on; the second time the main control is switched PT6920 color chip pin 3 outputs low level, pin 4 outputs high level, then the first line LED is off, and the second line LED is on; the third switch main control PT6920 color chip pin 3 outputs high power Level, pin 4 outputs high level, then the first and second line LEDs are on at the same time; the fourth time the main control PT6920 color chip pin 3 outputs low level, pin 4 outputs low level, then the first, second line The LEDs of the two lines are not bright, and the color temperature mode of the LED lights is realized.

The utility model also provides an LED lamp, which includes standard E26/27/13 lamp holders connected sequentially, an insulating and heat-conducting shell, a heat-conducting and fixed adhesive glue, a switch dimming and color-adjusting temperature driving circuit, a radiator, an insulating and heat-conducting glue or a heat-conducting sheet, LED light-emitting component and light-transmitting cover; the switch dimming and color temperature driving circuit is the above-mentioned LED light switch dimming and color temperature driving circuit, and the LED light-emitting component is the above-mentioned LED light switch dimming and color temperature driving circuit Two LED light-emitting component circuits with different color temperatures in the drive circuit.

The beneficial effect of the LED of the utility model is that: in the LED lamp, the color temperature mode is realized through the color temperature module control circuit, the whole control circuit is relatively simple, and the control cost is low.

Description of drawings

Fig. 1 is the driving circuit diagram of the utility model LED light switch dimming color temperature adjustment,

Fig. 2 is a structural diagram of the LED lamp of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

A2, surge suppression and rectification filter circuit, A3, EMI filter circuit, A4, dimming module control circuit, A5, color temperature module control circuit, A6, two different color temperature LED light-emitting component circuits, 1, standard E26/27 /13 Lamp holder, 2. Insulated heat conduction shell, 3. Heat conduction fixed adhesive, 4. Switch dimming, color temperature driving circuit, 5. Radiator, 6. Heat conduction sheet, 7. LED light emitting component

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Refer to Figure 1 for the driving circuit diagram of the LED light switch, dimming, coloring and temperature of the utility model, including surge suppression and rectification filter circuit A1, EMI filter circuit A2, dimming module control circuit A3, coloring temperature module control circuit A4 and two different circuits Color temperature LED light-emitting component circuit A5; the output end of the surge suppression and rectification filter circuit A1 is connected to the input end of the EMI filter circuit A2, the output end of the EMI filter circuit A2 is connected to the control end of the dimming module control circuit A3 and the color temperature module The input end of the control circuit A4 is connected, the output end of the dimming module control circuit A3 is connected to the positive poles of two LED lighting component circuits A5 with different color temperatures, the output terminal of the color temperature module control circuit A4 is connected to the two LED lighting component circuits A5 with different color temperatures Negative connection.

Among them, the surge suppression and rectification filter circuit A1 includes a MOV1 resistor, a DB1 rectifier bridge stack circuit, one end of the MOV1 resistor is connected to the L terminal of the circuit, the other end of the MOV1 resistor is connected to the N terminal of the circuit, and the input of the DB1 rectifier bridge stack circuit The terminal is connected to both ends of the MOV1 resistor, and the output terminal of the DB1 rectifier bridge stack circuit is connected to the input terminal of the EMI filter circuit A2. Through the surge suppression and rectification filter circuit composed of MOV1 resistor and DB1 rectifier bridge stack circuit, it can effectively absorb/release the high-voltage pulse energy of the line induction lightning to prevent it from damaging the back-end components.

Wherein, the EMI filter circuit A2 is composed of an L1 inductor, a Ce1 capacitor, and a Ce2 capacitor to form a π-type filter circuit. Through the π-type filter circuit, the electromagnetic interference generated by this circuit and the electromagnetic interference in the power grid are suppressed.

Wherein, the dimming module control circuit (A4) includes a main control chip PT6988, the internal high-power tube drain terminal of the PT6988 is connected to the output terminal of the EMI filter circuit (A3), and the output current of the PT6988 chip controls sampling Terminal CS is externally connected in parallel with high-precision sampling resistors RS1, RS2, and the other terminal of RS1 and RS2 is connected to the output control SET terminal of the dimming module circuit chip PT6988 and the L3 inductance and Ce3 capacitance of the peak current control LC resonant circuit. Since the main control chip PT6988 works in the critical conduction mode of the inductor L3, it is ensured that the current passing through L3 does not change with the change of the output voltage, and the output current is stable; at the same time, because the main control chip PT6988 is embedded with a high-voltage 500V MOS power tube , and adopts the source drive control mode, the working current is low, no additional windings are needed for detection and power supply, and the system can still achieve better linear regulation and load regulation; at the same time, the main control chip PT6988 precisely controls the output current The total dimming output current is controlled by controlling the peak current of the inductor L3. The voltage value detected by RS1 and RS1 is compared with the internal peak threshold voltage of the chip by comparing the voltage detected by RS1 and RS1 with the internal peak threshold voltage of the chip, and then notifies the chip whether An internal lockout shutdown process is performed to ensure stable output current.

Wherein, the color temperature module control circuit (A5) mainly includes a PT6920 LED color driver chip, the input terminal VIN of the chip PT6920 is externally connected to a capacitor C2, and is connected to the output terminal of the EMI filter circuit (A3) through a resistor R8, The output control pins DR1 and DR2 of the chip PT6920 are respectively connected to the negative poles of LED light-emitting component circuits (A6) of different color temperature groups; the maintenance power supply pin VDD of the chip PT6920 is connected in parallel with two capacitors C3, C4. The main control PT6920 color driver chip integrates MCU inside, and the control strategy/program is solidified in the MCU as follows to realize the color temperature mode. Strategy implementation method: the first time the main control PT6920 color chip pin 3 outputs a high level, and the pin 4 outputs a low level, then the LED of the first line is on, and the LED of the second line is not on; the second time the main control is switched PT6920 color chip pin 3 outputs low level, pin 4 outputs high level, then the first line LED is off, and the second line LED is on; the third switch main control PT6920 color chip pin 3 outputs high power Level, pin 4 outputs high level, then the first and second line LEDs are on at the same time; the fourth time the main control PT6920 color chip pin 3 outputs low level, pin 4 outputs low level, then the first, second line The LEDs of the two lines are not bright, and the color temperature mode of the LED lights is realized.

This embodiment also provides an LED lamp, which includes a standard E26/27/13 lamp cap 1, an insulating and heat-conducting shell 2, a heat-conducting and fixing adhesive 3, a switch dimming, color temperature driving circuit 4, a radiator 5, Insulated heat-conducting adhesive or heat-conducting sheet 6, LED light-emitting component 7 and light-transmitting cover 8; switch dimming, color-adjustment and temperature driving circuit 4 is the above-mentioned LED lamp switch, dimming, color-adjustment and temperature driving circuit, and LED light-emitting component 7 is the above-mentioned LED lamp Two LED light-emitting component circuits with different color temperatures in the switch dimming and color temperature driving circuit.

In the LED lamp, the color temperature mode is realized through the color temperature module control circuit, the whole control circuit is relatively simple, and the control cost is low.

The LED lamp switch dimming, color adjustment and temperature driving circuit of the present invention and the LED lamp with it have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only used to help understand the core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. Above all, the contents of this specification should not be interpreted as limiting the utility model.

Claims (6)

1. a LED switch dimming color-temperature regulating drive circuit, it is characterized in that, including Surge suppression and current rectifying and wave filtering circuit (A2), EMI filter circuit (A3), light-adjusting module control circuit (A4), color-temperature regulating module control circuit (A5) and two-way different-colour LED luminescence component circuit (A6)；The outfan of described Surge suppression and current rectifying and wave filtering circuit (A2) is connected with the input of described EMI filter circuit (A3), the outfan of described EMI filter circuit (A3) is connected with control end and described color-temperature regulating module control circuit (A5) input of described light-adjusting module control circuit (A4), the outfan of described light-adjusting module control circuit (A4) is connected with the positive pole of two-way different-colour LED luminescence component circuit (A6), the outfan of described color-temperature regulating module control circuit (A5) is connected with described two-way different-colour LED luminescence component circuit (A6) negative pole.

LED switch dimming color-temperature regulating drive circuit the most according to claim 1, it is characterized in that, described Surge suppression and current rectifying and wave filtering circuit (A2) include MOV1 resistance, DB1 rectifier bridge stack circuit, one end of described MOV1 resistance is connected with the L end of circuit, the other end of described MOV1 resistance is connected with the N end of circuit, the two ends of the input of described DB1 rectifier bridge stack circuit and described MOV1 resistance connect, the outfan of described DB1 rectifier bridge stack circuit and being connected with the input of described EMI filter circuit (A3).

LED switch dimming color-temperature regulating drive circuit the most according to claim 2, it is characterised in that described EMI filter circuit (A3) is by L1 inductance, Ce1 electric capacity, Ce2 electric capacity composition π type filter circuit.

LED switch dimming color-temperature regulating drive circuit the most according to claim 3, it is characterized in that, described light-adjusting module control circuit (A4) includes main control chip PT6988, the inside high-power tube drain electrode end of described PT6988 is connected with the outfan of described EMI filter circuit (A3), described PT6988 chip output current controls sampling end CS external parallel high-accuracy sampling resistor RS1, RS2, the other end of RS1, RS2 controls SET end and the L3 inductance of peak value comparison method LC resonance circuit with light-adjusting module circuit chip PT6988 output, and Ce3 electric capacity connects.

LED switch dimming color-temperature regulating drive circuit the most according to claim 4, it is characterized in that, described color-temperature regulating module control circuit (A5) mainly includes PT6920LED toning driving chip, described chip PT6920 input VIN external capacitor C2, and be connected with the outfan of described EMI filter circuit (A3) by resistance R8, described chip PT6920 output controls foot DR1, DR2 negative pole respectively with LED luminescence component circuit (A6) of different-colour group and is connected；It is connected in parallel 2 electric capacity C3, C4 between maintenance power pins VDD and the circuit ground of described chip PT6920.

6. a LED, including the standard E26/27/13 lamp holder (1) being linked in sequence successively, insulating heat-conductive shell (2), heat conduction fixed bonding glue (3), switch dimming color-temperature regulating drive circuit (4), radiator (5), thermal plastic insulation or conducting strip (6), LED luminescence component (7) and diffuser (8)；It is characterized in that, described switch dimming color-temperature regulating drive circuit (4) is the LED switch dimming color-temperature regulating drive circuit described in any one of claim 1 to 5, and described LED luminescence component (7) is the two-way different-colour LED luminescence component circuit in the LED switch dimming color-temperature regulating drive circuit described in any one of claim 1 to 5.