CN215529376U - No stroboscopic response drive circuit and high-power LED lamp - Google Patents
No stroboscopic response drive circuit and high-power LED lamp Download PDFInfo
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- CN215529376U CN215529376U CN202120350267.9U CN202120350267U CN215529376U CN 215529376 U CN215529376 U CN 215529376U CN 202120350267 U CN202120350267 U CN 202120350267U CN 215529376 U CN215529376 U CN 215529376U
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Abstract
The utility model discloses a stroboflash-free induction drive circuit, which is characterized in that: the LED frequency-dividing circuit comprises a rectifying circuit, a master control circuit, an induction circuit, a frequency-dividing circuit and an LED module, wherein the rectifying circuit, the master control circuit, the frequency-dividing circuit and the LED module are sequentially connected, and the master control circuit is further respectively connected with the induction circuit and the LED module. Correspondingly, the utility model also discloses a high-power LED lamp, which comprises an LED lamp body and the stroboflash-free induction driving circuit, wherein the stroboflash-free induction driving circuit is arranged in the LED lamp body. The utility model can realize multiple induction modes, and has the advantages of low ripple, no stroboflash, high power factor and strong lightning surge resistance.
Description
Technical Field
The utility model relates to the field of LED illumination, in particular to a stroboflash-free induction driving circuit and a high-power LED lamp.
Background
The LED induction lamp is a novel intelligent lighting product which is automatically controlled to light a light source through the induction module, has the characteristics of long service life of a switch, high reaction speed, high lighting effect, small size and easiness in control, and simultaneously does not need to light a bulb automatically by a manual switch, so that the intelligent degree is high.
According to different induction modes, the LED induction lamps are classified into the following types: the LED light sensing induction lamp, the LED infrared induction lamp and the LED microwave induction lamp are arranged on the LED light sensing induction lamp; although the LED induction lamps already have relatively high quality performance, the above LED induction lamps can only realize a single induction mode, but cannot realize multiple induction modes; meanwhile, how to further improve power factors and lightning surge resistance, and the LED low-ripple non-stroboscopic light effect are realized, and the technical problem of the promotion of the LED induction lamp is solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a stroboflash-free induction driving circuit capable of realizing multiple induction modes and a high-power LED lamp, and meanwhile, the stroboflash-free LED lamp is low in ripple, high in power factor and strong in lightning surge resistance.
In order to solve the technical problem, the utility model discloses a non-strobe induction drive circuit, which is characterized in that: the LED frequency-dividing circuit comprises a rectifying circuit, a master control circuit, an induction circuit, a frequency-dividing circuit and an LED module, wherein the rectifying circuit, the master control circuit, the frequency-dividing circuit and the LED module are sequentially connected, the master control circuit is further respectively connected with the induction circuit and the LED module, the rectifying circuit is used for converting alternating mains supply into direct current to be supplied with power by the master control circuit in a matched mode, the master control circuit is used for supplying power to the frequency-dividing circuit, the induction circuit and the LED module in a matched mode, the induction circuit is used for collecting induction signals to control the on-off of the frequency-dividing circuit, and the frequency-dividing circuit is used for carrying out frequency-dividing processing on the LED module.
Preferably, the sensing circuit comprises a sensing module, a sensing voltage stabilizing module and a sensing control module, and the sensing module is respectively connected with the sensing voltage stabilizing module and the sensing control module.
The induction module is provided with an induction power supply pin, an induction output pin and an induction grounding pin, the induction power supply pin is respectively connected with the main control circuit, the frequency eliminating circuit and the rectifying circuit through the induction voltage stabilizing module, the induction output pin is respectively connected with the frequency eliminating circuit and the rectifying circuit through the induction control module, and the induction grounding pin is connected with the rectifying circuit.
Preferably, the frequency-removing circuit comprises a frequency-removing chip, a frequency-removing starting module, a frequency-removing adjusting module and a frequency-removing driving module, wherein the frequency-removing chip is respectively connected with the frequency-removing starting module, the frequency-removing adjusting module and the frequency-removing driving module, and the frequency-removing starting module is also connected with the frequency-removing driving module.
Preferably, the frequency-removing chip is provided with a frequency-removing power supply pin, a frequency-removing grounding pin, a frequency-removing adjusting pin, a frequency-removing control pin, a frequency-removing voltage-limiting pin and a frequency-removing current-limiting pin, the frequency-removing power supply pin is respectively connected with the main control circuit, the sensing circuit and the rectifying circuit through the frequency-removing starting module, the frequency-removing grounding pin is connected with the rectifying circuit, the frequency-removing adjusting pin is connected with the rectifying circuit through the frequency-removing adjusting module, and the frequency-removing control pin, the frequency-removing voltage-limiting pin and the frequency-removing current adjustment are respectively connected with the main control circuit, the sensing circuit and the rectifying circuit through the frequency-removing driving module.
Preferably, the main control circuit comprises a main chip, a main chip starting module, a voltage feedback module, a current control module, a loop compensation module and a driving module, wherein the main chip is respectively connected with the main chip starting module, the voltage feedback module, the current control module, the loop compensation module and the driving module.
Preferably, the main chip is a non-integrated BUCK chip, and the main control circuit further comprises a power supply supplementary module; the non-integrated BUCK chip is provided with a non-integrated power supply pin, a non-integrated grounding pin, a non-integrated voltage feedback pin, a non-integrated current control pin, a non-integrated loop compensation pin and a non-integrated driving pin, the non-integrated power supply pin is respectively connected with the rectifying circuit and the non-integrated grounding pin through the main chip starting module, the non-integrated voltage feedback pin is connected with the non-integrated grounding pin through the voltage feedback module, the non-integrated current control pin is connected with the non-integrated grounding pin through the current control module, the non-integrated loop compensation pin is connected with the non-integrated grounding pin through the loop compensation module, the non-integrated driving pin is respectively connected with the rectifying circuit, the LED module, the frequency eliminating circuit and the induction circuit through the driving module, the non-integrated power supply pin is connected with the input end of the LED module through the power supply supplementary module;
preferably, the main chip is an integrated BUCK chip, the integrated BUCK chip is provided with an integrated drain electrode pin, an integrated starting pin, an integrated grounding pin, an integrated voltage feedback pin, an integrated current control pin and an integrated circuit compensation pin, the integrated drain electrode pin is connected with the rectifying circuit, the integrated starting pin is connected with the integrated grounding pin through the main chip starting module, the integrated voltage feedback pin is connected with the integrated grounding pin through the voltage feedback module, the integrated current control pin is connected with the integrated grounding pin through the current control module, the integrated loop compensation pin is connected with the integrated grounding pin through the loop compensation module, the integrated driving pin is also connected with the rectifying circuit, the LED module, the frequency eliminating circuit and the induction circuit respectively through the driving module.
Preferably, the rectifier circuit comprises a rectifier bridge and a rectifier filter module, and the rectifier bridge is connected with the rectifier filter module; the rectifier bridge is provided with a rectification input positive end, a rectification input reverse end, a rectification output pin and a rectification grounding pin, the rectification input positive end is connected with a live wire, the rectification input reverse end is connected with a zero line, and the rectification output pin is connected with the main control circuit through the rectification filtering module.
Preferably, the rectifier circuit further includes an EMI filter protection module, one end of the EMI filter protection module is connected to the live line and the zero line, and the other end of the EMI filter protection module is connected to the rectifying input positive terminal and the rectifying input reverse terminal.
Correspondingly, the utility model also provides a high-power LED lamp, which comprises an LED lamp body and the stroboflash-free induction driving circuit, wherein the stroboflash-free induction driving circuit is arranged in the LED lamp body.
The beneficial effects of the implementation of the utility model are as follows:
the utility model combines the rectification circuit, the master control circuit, the induction circuit, the frequency-removing circuit and the LED module, can realize various induction modes, and simultaneously has the advantages of low ripple, no stroboflash, high power factor and strong lightning surge resistance, and specifically:
the LED module is automatically switched on and off by sensing light, a microwave radar or human infrared rays through the sensing circuit; meanwhile, the LED module is subjected to frequency removal processing through the frequency removal circuit, so that the low-ripple and stroboflash-free lighting effect is achieved; in addition, the LED module is subjected to on-off control processing through the main control circuit, so that the utilization rate of electric energy is improved, and the power factor is high; finally, the anti-lightning surge capacity of the utility model is enhanced through the rectifying circuit, and the safety performance is higher than the requirement of international regulations.
Drawings
Fig. 1 is a connection diagram of a circuit module in the non-strobe inductive driving circuit according to the present invention;
FIG. 2 is a circuit diagram of a non-strobe inductive driver circuit according to a first embodiment of the present invention;
FIG. 3 is a circuit diagram of a second embodiment of a non-strobe inductive driver circuit according to the present invention;
fig. 4 is a schematic structural diagram of the high-power LED lamp of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the non-strobe inductive driving circuit 6 of the present invention includes a rectifying circuit 1, a main control circuit 2, an inductive circuit 3, a frequency-dividing circuit 4 and an LED module 5, wherein the rectifying circuit 1, the main control circuit 2, the frequency-dividing circuit 4 and the LED module 5 are sequentially connected, and the main control circuit 2 is further connected with the inductive circuit 3 and the LED module 5, respectively.
During operation, rectifier circuit 1 is used for converting the alternating current commercial power into high-voltage direct current and supplies power to main control circuit 2 adaptation, and main control circuit 2 is used for supplying power to divide frequency circuit 4, induction circuit 3 and LED module 5 adaptation, and induction circuit 3 is used for gathering the break-make of induction signal in order to control divide frequency circuit 4, and divide frequency circuit 4 is used for carrying out the frequency removal to LED module 5. Therefore, the utility model can realize multiple induction modes and has the advantages of low ripple, no stroboflash, high power factor and strong lightning surge resistance.
It should be noted that the high power factor non-strobe LED circuit 6 of the present invention includes two embodiments, and the following two embodiments are analyzed:
as shown in fig. 2, the first embodiment of the present invention includes a rectifying circuit 1, a main control circuit 2, an induction circuit 3, a frequency-dividing circuit 4 and an LED module 5, the rectifying circuit 1, the main control circuit 2, the frequency-dividing circuit 4 and the LED module 5 are connected in sequence, the main control circuit 2 is further connected to the induction circuit 3 and the LED module 5, and the rectifying circuit 1, the main control circuit 2, the induction circuit 3, the frequency-dividing circuit 4 and the LED module 5 are described below.
First, rectifier circuit 1
the rectifier bridge BR1 is used for converting alternating current mains supply into high voltage direct current, wherein, rectifier bridge BR1 is provided with a rectification input positive terminal, a rectification input reverse terminal, a rectification output pin and a rectification grounding pin.
The EMI filtering protection module comprises a fuse resistor F1, a common mode choke coil LF1, an X capacitor CX1 and a voltage dependent resistor VR1, wherein the fuse resistor F1 is used for short-circuit protection, the voltage dependent resistor VR1 is used for overvoltage protection between a positive end and a negative end of a rectifying input, and the common mode choke coil LF1 and the X capacitor CX1 are used for eliminating common mode interference. It should be noted that the EMI filter protection module can achieve a lightning surge resistance of 1KV, which is higher than the international lightning surge resistance standard of 0.5 KV.
Further, the common mode choke LF1 is provided with an input positive terminal, an input negative terminal, an output positive terminal, and an output negative terminal.
The rectification filtering module comprises a capacitor C1, a capacitor C2, an inductor L1 and a voltage dependent resistor VR2, wherein the capacitor C1, the capacitor C2 and the inductor L1 are combined to form a CL C filtering network for CLC filtering of high-voltage direct current, and the voltage dependent resistor VR2 is used for overvoltage protection between a rectification output pin and a rectification grounding pin.
The output positive end of the common mode choke coil LF1 is connected with the rectification input positive end, the input positive end of the common mode choke coil LF1 is connected with the live wire through a fuse resistor F1, the input reverse end of the common mode choke coil LF1 is connected with the zero line, the output reverse end of the common mode choke coil LF1 is connected with the rectification input reverse end, the rectification input positive end is connected with the rectification input reverse end through an X capacitor CX1 and a piezoresistor VR1 respectively, one end of an inductor L1 is connected with a rectification output pin and is connected with a rectification ground pin through a capacitor C1, and the other end of the inductor L1 is connected with the rectification ground pin through a capacitor C2 and a piezoresistor VR2 respectively.
When the alternating current commercial power supply works, after common mode interference is eliminated through the EMI filtering module, the alternating current commercial power is converted into high-voltage direct current through the rectification function of the rectifier bridge BR1, and finally the high-voltage direct current which is relatively stable is output through the rectification filtering module of the CLC filtering network.
It should be noted that, for a usage scenario with low EMC requirements, the rectifier circuit 1 of the present embodiment may omit the EMI filter protection module.
Second, main control circuit 2
The main control circuit 2 comprises a main chip U1, a main chip starting module, a voltage feedback module, a current control module, a loop compensation module and a driving module, wherein the main chip U1 is respectively connected with the main chip starting module, the voltage feedback module, the current control module, the loop compensation module and the driving module. Specifically, the method comprises the following steps:
the main chip U1 in this embodiment is a non-integrated BUCK main chip, and the main chip U1 is provided with a non-integrated power supply pin VCC, a non-integrated ground pin GND, a non-integrated voltage feedback pin FB, a non-integrated current control pin ISP, a non-integrated loop compensation pin COMP, and a non-integrated drive pin GATE. Preferably, the main chip U1 can be a chip with model number JW1765, but not limited to this, and an appropriate model number can be selected according to actual situations.
The main chip starting module comprises a resistor R1 and a starting capacitor CS1, wherein the resistor R1 is used for voltage division and current limitation when high-voltage direct current supplies power to the main chip U1, and the starting capacitor CS1 is used for enabling the voltage of a non-integrated power supply pin VCC to rise in an integral mode.
The voltage feedback module comprises a resistor R5 and a resistor R6, wherein the resistor R5 and the resistor R6 are used for dividing voltage to detect the output voltage of the main control circuit 2.
The current control module comprises a current control resistor RS1, wherein the current control resistor RS1 is used for adjusting the working current of the main control circuit 2.
The loop compensation module comprises a capacitor C3 and a capacitor C4, wherein the capacitor C3 and the capacitor C4 are used for loop compensation of the output voltage and the output current of the main control circuit 2.
The driving module comprises a resistor R2, a resistor R3, an NMOS field-effect transistor Q1, a capacitor C5, an energy storage inductor T1, an energy storage capacitor CE1 and a diode D2, wherein the resistor R2 is used for limiting the current of the grid electrode of the NMOS field-effect transistor Q1, the resistor R2 and the resistor R3 are used for dividing the voltage to provide a conducting voltage for the grid electrode of the NMOS field-effect transistor Q1, the capacitor C5 is used for filtering spike pulses when the NMOS field-effect transistor Q1 is switched, the energy storage inductor T1 and the energy storage capacitor CE1 are used for storing electric energy when the NMOS field-effect transistor Q1 is switched on and releasing electric energy when the NMOS field-effect transistor Q1 is switched off, and the diode D2 is used for providing a unidirectional loop channel for releasing the electric energy for the energy from the energy storage inductor T1 and the energy storage capacitor CE1 when the NMOS field-effect transistor Q1 is switched off.
It should be added that, the main control circuit 2 of the present embodiment further includes a power supply supplementary module; specifically, the power supply supplementary module comprises a diode D1 and a resistor R4, and the diode D1 and the resistor R4 are used for providing supplementary channels when the driving module supplies power to the main chip U1, so that the power consumption of the resistor R1 is reduced, and the power factor is improved.
The non-integrated power supply pin VCC is respectively connected with the drain of the NMOS field effect transistor Q1, the end of a capacitor C5 and one end of an inductor L1 of the rectifying circuit 1 through a resistor R1, and is connected with a non-integrated grounding pin GND through a starting capacitor CS1, the other end of the capacitor C5 is connected with the LED module 5 and is connected with the non-integrated grounding pin GND through an energy storage inductor T1, and is also connected with the anode of a diode D2 and the rectifying grounding pin of the rectifying circuit 1 through an energy storage capacitor CE1, the cathode of the diode D2 is respectively connected with the sources of the non-integrated current control pin ISP and the NMOS field effect transistor Q1 and is connected with the non-integrated grounding pin GND through a current control resistor RS1, the non-integrated current control pin ISP is connected with the non-integrated loop compensation pin COMP through the capacitor C4, the non-integrated loop compensation pin COMP is connected with the non-integrated grounding pin GND through a capacitor C3, the GATE of the NMOS field effect transistor Q1 is connected with the non-integrated drive pin GATE through a resistor R2, and is connected with the source of the NMOS field-effect transistor Q1 and the non-integrated current control pin ISP through a resistor R3, the non-integrated voltage feedback pin FB is connected with the anode of the diode D1 and the anode of the energy storage capacitor CE1 through a resistor R5, and is connected with the non-integrated ground pin GND through a resistor R6, and the cathode of the diode D1 is connected with the non-integrated power supply pin VCC through a resistor R4.
When the frequency divider works, the rectifier circuit 1 charges the starting capacitor CS1 through the resistor R1, when the voltage of the starting capacitor CS1 reaches the starting voltage of the main chip U1, the main chip U1 is activated to start, the non-integrated driving pin GATE outputs a switching signal to drive the NMOS field-effect tube Q1 to be switched on or switched off, when the non-integrated driving pin GATE outputs a high level, the NMOS field-effect tube Q1 is switched on, high-voltage direct current output by the rectifier circuit 1 can charge the energy storage inductor T1 and the energy storage capacitor CE1 through the NMOS field-effect tube Q1 and simultaneously supply power for the induction circuit 3 and the frequency divider 4, when the non-integrated driving pin GATE outputs a low level, the NMOS field-effect tube Q1 is switched off, the rectifier circuit 1 cannot charge the energy storage inductor T1 and the energy storage capacitor CE1 and supply power for the induction circuit 3 and the frequency divider 4, the energy storage inductor T1 and the energy storage capacitor CE1 release power to supply power for the induction circuit 3 and the frequency divider 4 at the main chip U1 through the power supply module, the on-off control of the NMOS field effect transistor Q1 by the main control circuit 2 can improve the electric energy utilization rate and power factor.
Third, the induction circuit 3
The sensing circuit 3 comprises a sensing module U3, a sensing voltage stabilizing module and a sensing control module, wherein the sensing module U3 is respectively connected with the sensing voltage stabilizing module and the sensing control module. Specifically, the method comprises the following steps:
the sensing module U3 is provided with a sensing power supply pin VCC, a sensing output pin OUT and a sensing ground pin GND. It should be noted that the sensing module U3 can select a light sensing module, a microwave radar sensing module, or a human infrared sensing module to adapt to different usage scenarios.
The induction voltage stabilizing module comprises a resistor R10 and a voltage stabilizing tube ZD1, wherein the resistor is used for limiting the current of the main control circuit 2 supplied power to the induction module U3 in a matching way, and the voltage stabilizing tube ZD1 is used for overvoltage protection of the main control circuit 2 supplied power to the induction module U3 in a matching way.
The induction control module comprises a resistor R11 and an NPN triode Q3, wherein the resistor R11 is used for improving the on-off speed of the induction module, and the NPN triode Q3 is used for controlling the on-off of the frequency dividing circuit 4.
An induction power supply pin VCC is respectively connected with the positive electrode of an energy storage capacitor CE1 of the main control circuit 2 and the frequency dividing circuit 4 through a resistor R10, and is connected with a rectification grounding pin of the rectifying circuit 1 through a voltage regulator tube ZD1, the base of an NPN triode Q3 is connected with an induction output pin OUT, and is connected with a rectification grounding pin of the rectifying circuit 1 through a resistor R11, the collector of an NPN triode Q3 is respectively connected with the frequency dividing circuit 4, and the emitter of an NPN triode Q3 is respectively connected with an induction grounding pin GND and the rectification grounding pin of the rectifying circuit 1.
When the frequency divider works, when the sensing module U3 senses media such as light, microwave radar or human infrared rays, the sensing output pin OUT outputs a low level, the NPN triode Q3 is cut off, the voltage of the main control circuit 2 for supplying power to the frequency divider circuit 4 in a matching mode is unchanged, and the frequency divider circuit 4 is switched on; when the sensing module U3 does not sense a corresponding medium, the sensing output pin OUT outputs a high level, the NPN transistor Q3 is turned on, the voltage of the main control circuit 2 for adaptively supplying power to the frequency dividing circuit 4 is pulled low, and the frequency dividing circuit 4 is turned off, thereby implementing on-off control of the frequency dividing circuit 4 by the sensing circuit 3.
Four, frequency eliminating circuit 4
The frequency eliminating circuit 4 comprises a frequency eliminating chip U2, a frequency eliminating starting module, a frequency eliminating adjusting module and a frequency eliminating driving module, wherein the frequency eliminating chip U2 is respectively connected with the frequency eliminating starting module, the frequency eliminating adjusting module and the frequency eliminating driving module, and the frequency eliminating starting module is also connected with the frequency eliminating driving module. Specifically, the method comprises the following steps:
the frequency-removal chip U2 is provided with a frequency-removal power supply pin VIN, a frequency-removal grounding pin GND, a frequency-removal adjusting pin VC, a frequency-removal control pin VG, a frequency-removal voltage-limiting pin VLIMIT and a frequency-removal current-limiting pin VS.
The frequency-dividing starting module comprises a resistor R7 and a starting capacitor CS2, wherein the resistor R7 is used for voltage division and current limiting when the main control circuit 2 supplies power to the frequency-dividing chip U2, and the starting capacitor CS2 is used for enabling the voltage of the frequency-dividing power supply pin VIN to rise in an integral mode.
The frequency-dividing adjusting module comprises a capacitor C6, wherein the capacitor C6 is used for adjusting the frequency-dividing depth of the LED module 5.
The frequency-dividing driving module comprises a resistor R8, a resistor R9, a capacitor C7, a diode D3 and an NMOS field-effect tube Q2, wherein the resistor R8 is used for voltage sampling of the LED module 5, the resistor R9 is used for current sampling of the LED module 5, the diode D3 provides a channel for peak elimination when the NMOS field-effect tube Q2 is cut off, and the NMOS field-effect tube Q2 is used for controlling on-off of the LED module 5 to perform frequency-dividing processing.
Frequency-divided supply pin VIN is connected to the collector of NPN transistor Q3 of sensing circuit 3, and is respectively connected with the anode of an energy storage capacitor CE1 of the main control circuit 2, one end of a resistor R10 of the induction circuit 3 and the cathode of a diode D3 through a resistor R7, and is also respectively connected with a frequency-dividing grounding pin GND and a rectifying grounding pin of the rectifying circuit 1 through a starting capacitor CS2, a frequency-dividing adjusting pin VC is connected with the rectifying grounding pin of the rectifying circuit 1 through a capacitor C6, the drain electrode of an NMOS field effect tube Q2 is connected with one end of the LED module 5, and is connected with the other end of the LED module 5 through a diode D3, and is also connected with a frequency-dividing voltage-limiting pin VLIMIT through a resistor R8, the grid of the NMOS field effect transistor Q2 is connected with a frequency-dividing control pin VG, and is connected with the rectification grounding pin of the rectification circuit 1 through a capacitor C7, and the source electrode of the NMOS field effect transistor Q2 is connected with the frequency-dividing current-limiting pin VS and is connected with the rectification grounding pin of the rectification circuit 1 through a resistor R9.
During operation, the frequency removal processing of the LED module 5 is realized by controlling the on-off of the NMOS field effect transistor Q2, so that the low-ripple and non-stroboscopic light effect is achieved.
Fifth, LED module 5
One end of the LED module 5 is respectively connected with the main control circuit 2, the induction circuit 3 and the frequency eliminating circuit 4, and the other end of the LED module 5 is connected with the frequency eliminating circuit 4.
Specifically, the LED module 5 includes at least one LED lamp bead; when the LED module 5 comprises a plurality of LED lamp beads, the LED lamp beads can be connected in series or in parallel.
As shown in fig. 3, a second embodiment of the present invention includes a rectifying circuit 1, a main control circuit 2, an induction circuit 3, a frequency-dividing circuit 4, and an LED module 5, wherein the rectifying circuit 1, the main control circuit 2, the frequency-dividing circuit 4, and the LED module 5 are sequentially connected, the main control circuit 2 is further connected to the induction circuit 3 and the LED module 5, and the rectifying circuit 1, the main control circuit 2, the induction circuit 3, the frequency-dividing circuit 4, and the LED module 5 are described below.
First, rectifier circuit 1
the rectifier bridge BR2 is used for converting alternating current mains supply into high voltage direct current, wherein, rectifier bridge BR2 is provided with a rectification input positive terminal, a rectification input reverse terminal, a rectification output pin and a rectification grounding pin.
Unlike the rectifier circuit 1 of the first embodiment shown in fig. 2, in the present embodiment, the EMI filter protection module includes a fuse resistor F2 and a varistor VR3, wherein the fuse resistor F2 is used for short-circuit protection, and the varistor VR3 is used for overvoltage protection between the positive terminal and the negative terminal of the rectified input. It should be noted that the EMI filter protection module can achieve a lightning surge resistance of 1KV, which is higher than the international lightning surge resistance standard of 0.5 KV.
Unlike the rectifier circuit 1 of the first embodiment shown in fig. 2, in the present embodiment, the rectifier filter module includes a capacitor C8, a capacitor C9, and an inductor L2, wherein the capacitor C8, the capacitor C9, and the inductor L2 are combined into a CLC filter network for CLC filtering high-voltage dc.
The positive end of the rectification input is connected with the reverse end of the rectification input and the zero line through a voltage dependent resistor VR3 respectively and is connected with the live wire through a safety resistor F2, one end of an inductor L2 is connected with a rectification output pin and is connected with a rectification grounding pin through a capacitor C8, and the other end of the inductor L2 is connected with the rectification grounding pin through a capacitor C9.
When the alternating current commercial power supply works, after common mode interference is eliminated through the EMI filtering module, the alternating current commercial power is converted into high-voltage direct current through the rectification function of the rectifier bridge BR2, and finally the high-voltage direct current which is relatively stable is output through the rectification filtering module of the CLC filtering network.
Second, main control circuit 2
The main control circuit 2 comprises a main chip U4, a main chip starting module, a voltage feedback module, a current control module, a loop compensation module and a driving module, wherein the main chip U1 is respectively connected with the main chip starting module, the voltage feedback module, the current control module, the loop compensation module and the driving module. Specifically, the method comprises the following steps:
the main chip U4 in this embodiment is an integrated BUCK main chip, and the main chip U4 is provided with an integrated DRAIN pin DRAIN, an integrated start pin VCC, an integrated ground pin GND, an integrated voltage feedback pin FB, an integrated current control pin CS, and an integrated circuit compensation pin COMP. Preferably, the main chip U4 can be a chip with a model number BP2338, but is not limited to this, and an appropriate model number can be selected according to actual situations.
The voltage feedback module comprises a resistor R12 and a resistor R13, wherein the resistor R12 and the resistor R13 are used for dividing voltage to detect the output voltage of the main control circuit 2.
The current control module comprises a current control resistor RS2, wherein the current control resistor RS2 is used for adjusting the working current of the main control circuit 2.
Unlike the rectifying circuit 1 of the first embodiment shown in fig. 2, in the present embodiment, the main chip start module includes a capacitor C10, wherein the capacitor C10 is used for increasing the voltage of the integrated start pin VCC in an integral manner.
Unlike the rectifying circuit 1 of the first embodiment shown in fig. 2, in this embodiment, the loop compensation module includes a capacitor C11, and the capacitor C11 is used for loop compensation of the output voltage of the main control circuit 2.
Different from the rectifier circuit 1 of the first embodiment shown in fig. 2, in this embodiment, the driving module includes an energy storage inductor T2, an energy storage capacitor CE2, a capacitor C12, and a diode D4, where the energy storage inductor T2 and the energy storage capacitor CE2 are used for storing electric energy when the main control circuit 2 outputs voltage and releasing electric energy when the main control circuit 2 stops outputting voltage, and the capacitor C12 and the diode D4 are used for providing a unidirectional loop channel for the energy storage inductor T2 and the energy storage capacitor CE2 to release electric energy when the main control circuit 2 stops outputting voltage.
An integrated DRAIN terminal DRAIN is connected with one end of an inductor L2 of the rectifying circuit 1, an integrated start terminal VCC is connected with an integrated grounding terminal GND through a capacitor C10, an integrated loop compensation terminal COMP is connected with the integrated grounding terminal GND through a capacitor C11, an integrated voltage feedback terminal FB is respectively connected with one ends of the frequency eliminating circuit 4, the induction circuit 3 and the energy storage inductor T2 through a resistor R13 and is respectively connected with the integrated grounding terminal GND through a resistor R12 and a capacitor C12, one end of the energy storage inductor T2 is connected with a rectifying grounding terminal of the rectifying circuit 1 and an anode of a diode D4 through an energy storage capacitor CE2, the other end of the energy storage inductor T2 is connected with the integrated grounding terminal GND, a cathode of the diode D4 is connected with an integrated current control terminal CS and is connected with the integrated grounding terminal GND through a current control resistor RS 2.
When the integrated current control pin outputs a low level, no high-voltage direct current is used for charging the energy storage inductor T2 and the energy storage capacitor CE2 and supplying power to the induction circuit 3 and the frequency dividing circuit 4, the energy storage inductor T2 and the energy storage capacitor CE2 release electric energy simultaneously to supply power to the induction circuit 3 and the frequency dividing circuit 4, and the electric energy utilization rate and the power factor can be improved through the on-off control of the main control circuit 2.
Third, the induction circuit 3
The structure of the sense circuit 3 in this embodiment is the same as that of the sense circuit 3 in the first embodiment, and will not be described again in this embodiment.
Fourth, frequency eliminating circuit 4
The frequency eliminating circuit 4 comprises a frequency eliminating chip U5, a frequency eliminating starting module, a frequency eliminating adjusting module and a frequency eliminating driving module, wherein the frequency eliminating chip U5 is respectively connected with the frequency eliminating starting module, the frequency eliminating adjusting module and the frequency eliminating driving module, and the frequency eliminating starting module is also connected with the frequency eliminating driving module. Specifically, the method comprises the following steps:
the frequency-removal chip U5 is provided with a frequency-removal power supply pin VIN, a frequency-removal grounding pin GND, a frequency-removal adjusting pin VC, a frequency-removal control pin VG, a frequency-removal voltage-limiting pin VLIMIT and a frequency-removal current-limiting pin VS.
The frequency-dividing starting module comprises a resistor R14 and a starting capacitor C13, wherein the resistor R14 is used for voltage division and current limiting when the main control circuit 2 supplies power to the frequency-dividing chip U5, and the starting capacitor C13 is used for enabling the voltage of the frequency-dividing power supply pin VIN to rise in an integral mode.
The frequency-dividing adjusting module comprises a capacitor C14, wherein the capacitor C14 is used for adjusting the frequency-dividing depth of the LED module 5.
Different from the frequency dividing circuit 4 of the first embodiment shown in fig. 2, in the present embodiment, the frequency dividing driving module includes a resistor R15, a resistor R16, a diode D5, and an NMOS fet Q4, where the resistor R15 is used for sampling the voltage of the LED module 5, the resistor R16 is used for sampling the current of the LED module 5, the diode D5 provides a channel for eliminating the spike of the NMOS fet Q4, and the NMOS fet Q4 is used for controlling the on/off of the LED module 5 to perform frequency dividing processing.
The frequency-dividing power supply pin VIN is connected with the collector of an NPN triode Q5 of the induction circuit 3, and is respectively connected with the anode of an energy storage capacitor CE2 of the main control circuit 2, one end of a resistor R17 of the induction circuit 3 and the cathode of a diode D5 through a resistor R14, and is also respectively connected with a frequency-dividing grounding pin GND and a rectifying grounding pin of the rectifying circuit 1 through a starting capacitor C13, a frequency-dividing adjusting pin VC is connected with the rectifying grounding pin of the rectifying circuit 1 through a capacitor C14, the drain of an NMOS field effect tube Q4 is connected with one end of the LED module 5, and is connected with the other end of the LED module 5 through a diode D5, and is also connected with a frequency-dividing voltage-limiting pin VLIMIT through a resistor R15, the gate of the NMOS field effect tube Q4 is connected with a frequency-dividing control pin VG, and the source of the NMOS field effect tube Q4 is connected with a frequency-dividing current-limiting pin VS, and is connected with the rectifying grounding pin of the rectifying circuit 1 through a resistor R16.
During operation, the frequency removal processing of the LED module 5 is realized by controlling the on-off of the NMOS field effect transistor Q4, so that the low-ripple and non-stroboscopic light effect is achieved.
Fifth, LED module 5
The structure of the LED module 5 in this embodiment is the same as the structure of the LED module 5 in embodiment 1, and will not be repeated in this embodiment.
Correspondingly, the utility model also discloses a high-power LED lamp. As shown in fig. 4, the high-power LED lamp includes an LED lamp body and a non-stroboscopic sensing driving circuit 6, and the non-stroboscopic sensing driving circuit 6 is disposed inside the LED lamp body.
From the above, the present invention has the following beneficial effects:
the utility model combines the rectification circuit, the master control circuit, the induction circuit, the frequency-removing circuit and the LED module, can realize various induction modes, and simultaneously has the advantages of low ripple, no stroboflash, high power factor and strong lightning surge resistance, and specifically:
the LED module can be automatically switched on and off by sensing light, a microwave radar or human infrared rays through the sensing circuit; meanwhile, the LED module is subjected to frequency removal processing through the frequency removal circuit, so that the low-ripple and stroboflash-free lighting effect is achieved; in addition, the LED module is subjected to on-off control processing through the main control circuit, so that the utilization rate of electric energy is improved, and the power factor is high; finally, the anti-lightning surge capacity of the utility model is enhanced through the rectifying circuit, and the safety performance is higher than the requirement of international regulations.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (10)
1. A no stroboscopic response drive circuit which characterized in that: the LED frequency-dividing circuit comprises a rectifying circuit, a master control circuit, an induction circuit, a frequency-dividing circuit and an LED module, wherein the rectifying circuit, the master control circuit, the frequency-dividing circuit and the LED module are sequentially connected, the master control circuit is further respectively connected with the induction circuit and the LED module, the rectifying circuit is used for converting alternating mains supply into direct current to be supplied with power by the master control circuit in a matched mode, the master control circuit is used for supplying power to the frequency-dividing circuit, the induction circuit and the LED module in a matched mode, the induction circuit is used for collecting induction signals to control the on-off of the frequency-dividing circuit, and the frequency-dividing circuit is used for carrying out frequency-dividing processing on the LED module.
2. The non-strobe inductive driver circuit of claim 1, wherein: the induction circuit comprises an induction module, an induction voltage stabilizing module and an induction control module, wherein the induction module is respectively connected with the induction voltage stabilizing module and the induction control module;
the induction module is provided with an induction power supply pin, an induction output pin and an induction grounding pin, the induction power supply pin is respectively connected with the main control circuit, the frequency eliminating circuit and the rectifying circuit through the induction voltage stabilizing module, the induction output pin is respectively connected with the frequency eliminating circuit and the rectifying circuit through the induction control module, and the induction grounding pin is connected with the rectifying circuit.
3. The non-strobe inductive driver circuit of claim 1, wherein: the frequency eliminating circuit comprises a frequency eliminating chip, a frequency eliminating starting module, a frequency eliminating adjusting module and a frequency eliminating driving module, wherein the frequency eliminating chip is respectively connected with the frequency eliminating starting module, the frequency eliminating adjusting module and the frequency eliminating driving module, and the frequency eliminating starting module is also connected with the frequency eliminating driving module.
4. The non-strobe inductive driver circuit of claim 3, wherein: the frequency-removing chip is provided with a frequency-removing power supply pin, a frequency-removing grounding pin, a frequency-removing adjusting pin, a frequency-removing control pin, a frequency-removing voltage-limiting pin and a frequency-removing current-limiting pin, the frequency-removing power supply pin is respectively connected with the main control circuit, the sensing circuit and the rectifying circuit through the frequency-removing starting module, the frequency-removing grounding pin is connected with the rectifying circuit, the frequency-removing adjusting pin is connected with the rectifying circuit through the frequency-removing adjusting module, and the frequency-removing control pin, the frequency-removing voltage-limiting pin and the frequency-removing current adjustment are respectively connected with the main control circuit, the sensing circuit and the rectifying circuit through the frequency-removing driving module.
5. The non-strobe inductive driver circuit of claim 1, wherein: the main control circuit comprises a main chip, a main chip starting module, a voltage feedback module, a current control module, a loop compensation module and a driving module, wherein the main chip is respectively connected with the main chip starting module, the voltage feedback module, the current control module, the loop compensation module and the driving module.
6. The non-strobe inductive driver circuit of claim 5, wherein: the main chip is a non-integrated BUCK chip, and the main control circuit further comprises a power supply supplement module;
the non-integrated BUCK chip is provided with a non-integrated power supply pin, a non-integrated grounding pin, a non-integrated voltage feedback pin, a non-integrated current control pin, a non-integrated loop compensation pin and a non-integrated driving pin, the non-integrated power supply pin is respectively connected with the rectifying circuit and the non-integrated grounding pin through the main chip starting module, the non-integrated voltage feedback pin is connected with the non-integrated grounding pin through the voltage feedback module, the non-integrated current control pin is connected with the non-integrated grounding pin through the current control module, the non-integrated loop compensation pin is connected with the non-integrated grounding pin through the loop compensation module, the non-integrated driving pin is respectively connected with the rectifying circuit, the LED module, the frequency eliminating circuit and the induction circuit through the driving module, the non-integrated power supply pin is connected with the input end of the LED module through the power supply supplementary module.
7. The non-strobe inductive driver circuit of claim 5, wherein: the main chip is an integrated BUCK chip, an integrated drain electrode pin, an integrated starting pin, an integrated grounding pin, an integrated voltage feedback pin, an integrated current control pin and an integrated circuit compensation pin are arranged on the integrated BUCK chip, the integrated drain electrode pin is connected with the rectifying circuit, the integrated starting pin is connected with the integrated grounding pin through the main chip starting module, the integrated voltage feedback pin is connected with the integrated grounding pin through the voltage feedback module, the integrated current control pin is connected with the integrated grounding pin through the current control module, the integrated loop compensation pin is connected with the integrated grounding pin through the loop compensation module, the integrated driving pin is also connected with the rectifying circuit, the LED module, the frequency eliminating circuit and the induction circuit respectively through the driving module.
8. The non-strobe inductive driver circuit of claim 1, wherein: the rectifying circuit comprises a rectifying bridge and a rectifying and filtering module, and the rectifying bridge is connected with the rectifying and filtering module;
the rectifier bridge is provided with a rectification input positive end, a rectification input reverse end, a rectification output pin and a rectification grounding pin, the rectification input positive end is connected with a live wire, the rectification input reverse end is connected with a zero line, and the rectification output pin is connected with the main control circuit through the rectification filtering module.
9. The non-strobe inductive driver circuit of claim 8, wherein: the rectification circuit further comprises an EMI filtering protection module, one end of the EMI filtering protection module is connected with the live wire and the zero wire respectively, and the other end of the EMI filtering protection module is connected with the rectification input positive end and the rectification input reverse end respectively.
10. A high-power LED lamp is characterized in that: the high-power LED lamp comprises an LED lamp body and the stroboflash-free induction driving circuit as claimed in any one of claims 1 to 9, wherein the stroboflash-free induction driving circuit is arranged inside the LED lamp body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120350267.9U CN215529376U (en) | 2021-02-07 | 2021-02-07 | No stroboscopic response drive circuit and high-power LED lamp |
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| CN202120350267.9U CN215529376U (en) | 2021-02-07 | 2021-02-07 | No stroboscopic response drive circuit and high-power LED lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024017066A1 (en) * | 2022-07-19 | 2024-01-25 | 佛山市威得士智能照明科技有限公司 | Led modular intelligent driving circuit |
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2021
- 2021-02-07 CN CN202120350267.9U patent/CN215529376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024017066A1 (en) * | 2022-07-19 | 2024-01-25 | 佛山市威得士智能照明科技有限公司 | Led modular intelligent driving circuit |
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