CN217883909U - Wide-voltage high-PF-value strobeless LED drive control circuit - Google Patents
Wide-voltage high-PF-value strobeless LED drive control circuit Download PDFInfo
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- CN217883909U CN217883909U CN202220947675.7U CN202220947675U CN217883909U CN 217883909 U CN217883909 U CN 217883909U CN 202220947675 U CN202220947675 U CN 202220947675U CN 217883909 U CN217883909 U CN 217883909U
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Abstract
The utility model discloses a no stroboscopic LED drive control circuit of wide voltage high PF value, including instantaneous surge pulse protection circuit, PF value lift circuit, energy conversion circuit, self-excited switch oscillation circuit, current sampling circuit, FCD absorption circuit and electric current, voltage compensation circuit that interconnect, instantaneous surge pulse protection circuit comprises FR1 insurance resistance, CX1 ann rule electric capacity and ZR1 piezo-resistor, and instantaneous surge pulse protection circuit is connected in AC to DC energy conversion circuit; the utility model discloses utilized transformer T1A winding to participate in work, the interchange/direct current separately supplies power, complementary stack, thereby obtain the low harmonic component of high PF value, do not have 50/100 HZ's stroboscopic ripple again, so need not increase 50/100 HZ's ripple cancelling circuit, circuit structure is simple, do power device with the MOS pipe, the internal resistance is little, conversion efficiency is high, operating temperature is low, low-voltage automatic compensation, the constant current precision is higher, load voltage detects and the rate of adjustment is high, for safer more perfect protection circuit.
Description
Technical Field
The utility model relates to a LED drive control circuit technical field specifically is a no stroboscopic LED drive control circuit of wide voltage high PF value.
Background
At present, the RCC and LED constant current driving controllers in the market all use triodes as power switch elements, and have the advantages of large internal resistance, low efficiency, high heat productivity, short service life and easy damage. The conventional RCC and LED constant current drive control circuit does not have a mains voltage compensation circuit, and can not be used in wide-voltage high-constant-current-precision application occasions. In a conventional RCC and LED constant voltage drive control circuit, output voltage detection is post-stage feedback, the circuit structure is complex, the cost is high (the output voltage is fed back to a primary stage by using a light coupler for detection and adjustment), and the current constant precision is not high. The conventional RCC and LED constant current drive controller can not meet the ERP non-stroboscopic standard requirement of high PF value and low harmonic, and the conventional IC or RCC and LED constant current drive controller needs to be added with a ripple wave elimination circuit for removing 50/100HZ to meet the ERP non-stroboscopic standard requirement of high PF value and low harmonic. The circuit structure is complicated and the cost is high.
In the large environmental trend of 'core lack', in order to get out of the confusion of 'core lack', the LED drive control circuit with wide voltage, high PF value and no stroboscopic effect, which is designed by 'core lack', well solves the problem that an LED drive controller is designed without a chip, and can meet the ERP standard requirements of high PF value and low harmonic wave. Providing a solution for high quality requirements, higher reliability and low production costs.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a no stroboscopic LED drive control circuit of wide voltage high PF value to solve the problem that provides in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a wide-voltage high-PF-value non-strobe LED drive control circuit comprises an instantaneous surge pulse protection circuit, a PF value boosting circuit, an energy conversion circuit, a self-excited switch oscillation circuit, a current sampling circuit, an FCD absorption circuit, a current and voltage compensation circuit, wherein the instantaneous surge pulse protection circuit is composed of an FR1 safety resistor, a CX1 safety capacitor and a ZR1 piezoresistor and is connected with an AC-to-DC energy conversion circuit;
the AC-DC energy conversion circuit consists of a DB1 rectifier bridge, a CB1 CBB capacitor and an EC1 electrolytic capacitor, and the PF value boosting circuit consists of a T1/A transformer winding, an L1 inductor, a D4 fast recovery diode, a D5 fast recovery diode and a D6 fast recovery diode;
the DB1 rectifier bridge and the CB1 CBB capacitor are connected in parallel and then are connected with a T1/A transformer winding through a D5 fast recovery diode and an EC1 electrolytic capacitor, the L1 inductor and the D6 fast recovery diode are connected in parallel and then are connected with a D4 fast recovery diode, and the L1 inductor, the D6 fast recovery diode and the CB1 CBB capacitor are connected in series;
the energy conversion circuit consists of a T1/C transformer winding, an EC3 electrolytic capacitor, a D3 freewheeling diode and a Q1 power output device MOS tube;
the self-excited switch oscillation circuit consists of a Q2 triode, a Q3 triode, an R7 resistor, an R5 resistor, a T1/B transformer winding, a C3 capacitor and a C2 capacitor, wherein the C2 capacitor, the R7 resistor and the Q3 triode are connected in parallel;
the current sampling circuit consists of an R8 resistor, an RS1 resistor and an RS2 resistor, and the RS1 resistor and the RS2 resistor are connected in parallel and then are respectively connected with the Q2 triode and the Q3 triode through the R8 resistor;
the FCD absorption circuit consists of an R3 resistor, an R4 resistor, a C1 high-voltage capacitor and a D1 diode;
the current and voltage compensation circuit consists of a resistor R10, a resistor R11, a resistor R12, a voltage stabilizing diode ZD1, a diode D2, a triode Q4, a capacitor C5 and an EC 2.
FR1 insurance resistance and CX1 ann rule electric capacity are parallelly connected back one end and are connected in ZR1 piezo-resistor, and the other end is connected in DB1 rectifier bridge.
The D5 fast recovery diode, the EC1 electrolytic capacitor and the T1/A transformer winding are connected in series.
The T1/C transformer winding, the EC3 electrolytic capacitor and the D3 freewheeling diode are connected in series and then connected with the LED lamp bead string, and the LED lamp bead string comprises an LED1, an LED2 and an LED3 which are connected in series.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses transformer T1A winding has been utilized to participate in work, the alternating current/direct current separately-supplied power, complementary stack, thereby obtain the low harmonic component of high PF value, do not have 50/100 HZ's stroboscopic ripple again, so need not increase 50/100 HZ's ripple cancelling circuit, circuit structure is simple, and used component is conventional device in the circuit, easily purchase and production, the circuit easily debugs, therefore, the carrier wave is cheap, compare with the IC scheme on the market, save 50/100 HZ's ripple cancelling circuit, TL431 and opto-coupler feedback loop, can practice thrift the cost about 25%, do the power device with the MOS pipe, the internal resistance is little, high conversion efficiency, low operating temperature, low-voltage automatic compensation, the constant current precision is higher, load voltage detects with the regulation rate height, for safer more perfect protection circuit.
Drawings
Fig. 1 is a schematic diagram of a control circuit structure according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a control circuit structure according to embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a wide-voltage high-PF-value non-stroboscopic LED driving control circuit comprises an instantaneous surge pulse protection circuit, a PF value boosting circuit, an energy conversion circuit, a self-excited switch oscillation circuit, a current sampling circuit, an FCD absorption circuit, a current and voltage compensation circuit which are connected with one another, wherein the instantaneous surge pulse protection circuit consists of an FR1 safety resistor, a CX1 safety capacitor and a ZR1 piezoresistor, and is connected with an AC-to-DC energy conversion circuit;
the AC-DC energy conversion circuit consists of a DB1 rectifier bridge, a CB1 CBB capacitor and an EC1 electrolytic capacitor, and the PF value boosting circuit consists of a T1/A transformer winding, an L1 inductor, a D4 fast recovery diode, a D5 fast recovery diode and a D6 fast recovery diode;
the DB1 rectifier bridge and the CB1 CBB capacitor are connected in parallel and then are connected with a T1/A transformer winding through a D5 fast recovery diode and an EC1 electrolytic capacitor, the L1 inductor and the D6 fast recovery diode are connected in parallel and then are connected with a D4 fast recovery diode, and the L1 inductor, the D6 fast recovery diode and the CB1 CBB capacitor are connected in series;
the energy conversion circuit consists of a T1/C transformer winding, an EC3 electrolytic capacitor, a D3 freewheeling diode and a Q1 power output device MOS tube;
the self-excited switch oscillation circuit consists of a Q2 triode, a Q3 triode, an R7 resistor, an R5 resistor, a T1/B transformer winding, a C3 capacitor and a C2 capacitor, wherein the C2 capacitor, the R7 resistor and the Q3 triode are connected in parallel;
the current sampling circuit consists of an R8 resistor, an RS1 resistor and an RS2 resistor, and the RS1 resistor and the RS2 resistor are connected in parallel and then are respectively connected with the Q2 triode and the Q3 triode through the R8 resistor;
the FCD absorption circuit consists of an R3 resistor, an R4 resistor, a C1 high-voltage capacitor and a D1 diode;
the current and voltage compensation circuit consists of a resistor R10, a resistor R11, a resistor R12, a voltage stabilizing diode ZD1, a diode D2, a triode Q4, a capacitor C5 and an EC 2.
FR1 insurance resistance and CX1 ann rule electric capacity connect in parallel the back one end and connect in ZR1 piezo-resistor, and the other end is connected in DB1 rectifier bridge.
The D5 fast recovery diode, the EC1 electrolytic capacitor and the T1/A transformer winding are connected in series.
The T1/C transformer winding, the EC3 electrolytic capacitor and the D3 freewheeling diode are connected in series and then connected with the LED lamp bead string, and the LED lamp bead string comprises an LED1, an LED2 and an LED3 which are connected in series.
Wide voltage is high PF value does not have stroboscopic RCC, LED drive control circuit:
example 1: as shown in figure 1, an instantaneous surge pulse protection circuit is formed by an isolated LED drive control circuit case with wide voltage, high PF value, no stroboflash, RCC isolation constant current and constant voltage, an FR1 safety resistor, a CX1 safety capacitor and a ZR1 piezoresistor. The LED lamp comprises a DB1 rectifier bridge, a CB1 CBB capacitor and an EC1 electrolytic capacitor, which form an AC-to-DC energy conversion circuit and provide working energy for a rear-stage circuit, a T1/A transformer winding, an L1 inductor and a D4/D5/D6 fast recovery diode form a PF value boosting circuit, a T1/C transformer winding, an EC3 electrolytic capacitor, a D3 freewheeling diode and a Q1 power output device MOS tube form an energy conversion circuit and provide energy for an LED lamp bead string; the Q2 and Q3 triodes, the R7 and R5 resistors, the T1/B transformer winding, the C3 and C2 capacitors form a self-excited switch oscillation circuit; the R8, RS1 and RS2 resistors form a current sampling circuit to determine the magnitude of the output current; r1, R2 are the supply resistor of whole circuit work, R3, R4 resistance, C1 high-voltage capacitor, the D1 diode constitutes FCD absorption circuit, resistance R10, R11, R12, zener diode ZD1, diode D2, triode Q4, electric capacity C5, EC2, constitutes electric current, voltage compensation circuit, and the circuit is opened work when the commercial power voltage drops to certain setting value, reinforcing circuit's stability. The principle that the PF value boosting circuit is composed of the CB1 CBB capacitor, the L1 inductor and the D4/D5/D6 fast recovery diode can also be applied to the application of a chip scheme.
Example 2: as shown in fig. 2, the instantaneous surge pulse protection circuit is composed of an FR1 safety resistor, a CX1 safety capacitor, and a ZR1 piezoresistor in a wide-voltage high-PF-value non-strobe, RCC non-isolated constant-current step-down LED driving control circuit case. The LED lamp comprises a DB1 rectifier bridge, a CB1 CBB capacitor and an EC1 electrolytic capacitor, wherein the DB1 rectifier bridge, the CB1 CBB capacitor and the EC1 electrolytic capacitor form an AC-to-DC energy conversion circuit and provide working energy for a rear-stage circuit, a T1/A transformer winding, an L1 inductor and a D4/D5/D6 fast recovery diode form a PF value lifting circuit, an EC3 electrolytic capacitor, a D3 freewheeling diode and a Q1 power output device MOS (metal oxide semiconductor) tube form an energy conversion circuit and provide energy for an LED lamp bead string; the Q2, Q3 triode, R7, R5 resistance, T1/B transformer winding, C3, C2 electric capacity, make up the oscillating circuit of the self-excited switch; the R8, RS1 and RS2 resistors form a current sampling circuit to determine the magnitude of the output current; r1 and R2 are power supply resistors for working of the whole circuit, resistors R10, R11 and R12, a voltage stabilizing diode ZD1, a diode D2, a triode Q4 and capacitors C5 and EC2 form a current and voltage compensation circuit, and when the voltage of the mains supply drops to a certain set value, the circuit is opened to work, so that the stability of the circuit is enhanced. The principle that the circuit CB1 CBB capacitor, the L1 inductor and the D4/D5/D6 fast recovery diode form the PF value boosting circuit can also be applied to the application of a chip scheme.
Specifically, the circuit isolation/non-isolation/IC scheme can be applied when in use. The L1 inductor and the D4/D5/D6 fast recovery diode form a PF value boosting circuit, and Q1 is a power output device MOS tube. The Q2, Q3 triode, R7, R5 resistance, T1/B transformer winding, C3, C2 electric capacity make up the oscillating circuit of the self-excited switch; a load voltage detection circuit ZD1 voltage stabilizing diode is added, and when the LED lamp beads are in series open circuit and are not connected, the output power is controlled within a certain range; the function of open circuit protection; resistors R10, R11 and R12, a voltage stabilizing diode ZD1, a triode Q4 and a capacitor C2 form a voltage compensation circuit, and when the voltage of the mains supply drops to a certain set value, the circuit is turned on to work, so that the stability of the circuit is enhanced.
The circuit utilizes a transformer T1A winding to participate in work, AC/DC separate power supply and complementary superposition are carried out, so that low harmonic component with high PF value is obtained, 50/100HZ stroboscopic ripple waves are not generated, a 50/100HZ ripple wave eliminating circuit is not required to be added, the circuit is simple in structure, elements used in the circuit are conventional devices, the circuit is easy to purchase and produce, the circuit is easy to debug and low in cost, compared with an IC scheme on the market, the 50/100HZ ripple wave eliminating circuit, the TL431 and an optocoupler feedback loop are saved, about 25% of cost can be saved, an MOS (metal oxide semiconductor) tube is used as a power device, the internal resistance is small, the conversion efficiency is high, the working temperature is low, low-voltage automatic compensation is realized, the constant current precision is higher, the load voltage detection and adjustment rate is high, and the circuit is a safer and more perfect protection circuit.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a no stroboscopic LED drive control circuit of wide voltage high PF value, includes interconnect's instantaneous surge pulse protection circuit, PF value boost circuit, energy conversion circuit, self-excited switch oscillation circuit, current sampling circuit, FCD absorption circuit and electric current, voltage compensation circuit, its characterized in that: the instantaneous surge pulse protection circuit consists of an FR1 safety resistor, a CX1 safety capacitor and a ZR1 piezoresistor, and is connected with the AC-to-DC energy conversion circuit;
the AC-DC energy conversion circuit consists of a DB1 rectifier bridge, a CB1 CBB capacitor and an EC1 electrolytic capacitor, and the PF value boosting circuit consists of a T1/A transformer winding, an L1 inductor, a D4 fast recovery diode, a D5 fast recovery diode and a D6 fast recovery diode;
the DB1 rectifier bridge and the CB1 CBB capacitor are connected in parallel and then are connected with a T1/A transformer winding through a D5 fast recovery diode and an EC1 electrolytic capacitor, the L1 inductor and the D6 fast recovery diode are connected in parallel and then are connected with a D4 fast recovery diode, and the L1 inductor, the D6 fast recovery diode and the CB1 CBB capacitor are connected in series;
the energy conversion circuit consists of a T1/C transformer winding, an EC3 electrolytic capacitor, a D3 freewheeling diode and a Q1 power output device MOS tube;
the self-excited switch oscillation circuit consists of a Q2 triode, a Q3 triode, an R7 resistor, an R5 resistor, a T1/B transformer winding, a C3 capacitor and a C2 capacitor, wherein the C2 capacitor, the R7 resistor and the Q3 triode are connected in parallel;
the current sampling circuit consists of an R8 resistor, an RS1 resistor and an RS2 resistor, and the RS1 resistor and the RS2 resistor are connected in parallel and then are respectively connected with the Q2 triode and the Q3 triode through the R8 resistor;
the FCD absorption circuit consists of an R3 resistor, an R4 resistor, a C1 high-voltage capacitor and a D1 diode;
the current and voltage compensation circuit is composed of a resistor R10, a resistor R11, a resistor R12, a voltage stabilizing diode ZD1, a diode D2, a triode Q4, a capacitor C5 and an EC 2.
2. The LED driving control circuit of claim 1, wherein the LED driving control circuit is characterized in that: FR1 insurance resistance and CX1 ann rule electric capacity connect in parallel the back one end and connect in ZR1 piezo-resistor, and the other end is connected in DB1 rectifier bridge.
3. The driving control circuit of the LED without stroboscopic effect with wide voltage and high PF value as claimed in claim 1, wherein: the D5 fast recovery diode, the EC1 electrolytic capacitor and the T1/A transformer winding are connected in series.
4. The driving control circuit of the LED without stroboscopic effect with wide voltage and high PF value as claimed in claim 1, wherein: the T1/C transformer winding, the EC3 electrolytic capacitor and the D3 freewheeling diode are connected in series and then connected with the LED lamp bead string, and the LED lamp bead string comprises an LED1, an LED2 and an LED3 which are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220947675.7U CN217883909U (en) | 2022-04-23 | 2022-04-23 | Wide-voltage high-PF-value strobeless LED drive control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220947675.7U CN217883909U (en) | 2022-04-23 | 2022-04-23 | Wide-voltage high-PF-value strobeless LED drive control circuit |
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| Publication Number | Publication Date |
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| CN217883909U true CN217883909U (en) | 2022-11-22 |
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| CN202220947675.7U Active CN217883909U (en) | 2022-04-23 | 2022-04-23 | Wide-voltage high-PF-value strobeless LED drive control circuit |
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| CN (1) | CN217883909U (en) |
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- 2022-04-23 CN CN202220947675.7U patent/CN217883909U/en active Active
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