CN106061040A - Loss inhibition power supply for four-order active filtering type cold light LED - Google Patents
Loss inhibition power supply for four-order active filtering type cold light LED Download PDFInfo
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- CN106061040A CN106061040A CN201610579649.2A CN201610579649A CN106061040A CN 106061040 A CN106061040 A CN 106061040A CN 201610579649 A CN201610579649 A CN 201610579649A CN 106061040 A CN106061040 A CN 106061040A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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Abstract
The present invention discloses a loss inhibition power supply for a four-order active filtering type cold light LED. The power supply mainly comprises a control chip U2, a loss inhibition circuit, a four-phase active filtering circuit, a current detection circuit, a diode rectifier U1, a polarity capacitor C1, a diode D3, a field effect transistor trigging circuit connected with the OUT base pin and the VREF base pin of the control chip U2, a constant current starting circuit connected in series between the VCC base pin of the control chip U2 and the field effect transistor trigging circuit, and a frequency conversion drive circuit connected with the constant current starting circuit. The loss inhibition power supply for a four-order active filtering type cold light LED has high pressure resistant capacity, can output stable current and can effectively ensure the stability of the brightness of a cold light LED light. The energy consumption of the loss inhibition power supply for the four-order active filtering type cold light LED is reduced by more than 55% relative to the energy consumption of the current power supply circuit.
Description
Technical field
The present invention relates to electric energy-saving field, specifically, be a kind of quadravalence active power filtering type cold light LED loss suppression
Power supply.
Background technology
At present, due to LED have that energy consumption is low, the feature such as length in service life and safety and environmental protection, it has had become as people
One of the main product of life lighting.Owing to LED is different from traditional electric filament lamp, therefore it needs by special power supply electricity
Road is driven.But, the power circuit that current LED is used not only is easily subject to the impact of external voltage fluctuations, and
And its load capacity is poor, energy consumption is higher, it is impossible to controls output size of current, thus causes the brightness instability of LED, consumption
Electricity, service life short.
Therefore it provides one can improve load capacity, can ensure that again output controlled current flow, energy consumption can also be reduced simultaneously
LED power circuit is the task of top priority.
Summary of the invention
It is an object of the invention to overcome LED voltage circuit of the prior art to there is load capacity poor, energy consumption is higher,
Can not control export size of current defect, it is provided that a kind of quadravalence active power filtering type cold light LED loss suppress power supply.
The present invention is achieved through the following technical solutions: a kind of quadravalence active power filtering type cold light LED loss suppression power supply,
Main by control chip U2, diode rectifier U1, negative pole is connected with the cathode output end of diode rectifier U1, positive pole and
The cathode output end of diode rectifier U1 be connected after the polar capacitor C1 of ground connection, be connected with the VFB pin of control chip U2
The loss suppression circuit connect, N pole with loss suppression circuit be connected, P pole sequentially after resistance R5 and resistance R6 with control chip
The diode D3 that the VCC pin of U2 is connected, the field effect being connected with OUT pin and the VREF pin of control chip U2 respectively
Pipe triggers circuit, the current detection circuit being connected with control chip U2, is serially connected in VCC pin and the field effect of control chip U2
Pipe triggers the constant current start-up circuit between circuit, the variable frequency drive being connected with constant current start-up circuit, and drives with frequency conversion
The quadravalence active filter circuit composition that galvanic electricity road is connected；Described variable frequency drive is connected with the VCC pin of control chip U2
Connect；The cathode output end of described diode rectifier U1 is connected with constant current start-up circuit；The P pole of described diode D3 and electric current
Testing circuit is connected；The GND pin ground connection of described control chip U2, its ISEN pin is connected with CT pin.
Described loss suppression circuit by processing chip U3, audion VT3, P pole after resistance R33 with process chip U3
Diode D12, the P pole that IPK pin is connected, N pole is connected with the VCC pin processing chip U3 is sequentially through resistance R35 and electricity
Two poles being connected with the SWC pin processing chip U3 after resistance R37 with process the DRC pin of chip U3, N pole after resistance R34
Pipe D11, positive pole N pole with diode D11 after resistance R39 is connected, negative pole after resistance R41 with the transmitting of audion VT3
The polar capacitor C17 that pole is connected, one end is connected with the SWE pin processing chip U3, the base stage of the other end and audion VT3
Inductance L5, the P pole being connected emitter stage with audion VT3 after resistance R42 is connected, N pole is as loss suppression circuit
Outfan the diode D14 being connected with the VFB pin of control chip U2, negative pole after resistance R44 with the P of diode D14
The polar capacitor C18 that pole is connected, positive pole colelctor electrode with audion VT3 after resistance R43 is connected, positive pole and diode
Polar capacitor C19, the P pole that the N pole of D14 is connected, negative pole negative pole with polar capacitor C18 after resistance R45 is connected is through electricity
Be connected with the P pole of diode D12 after resistance R36, diode that N pole positive pole with polar capacitor C18 after resistance R40 is connected
D13, and positive pole RC pin with control chip U2 after resistance R38 is connected, negative pole is connected with the N pole of diode D13
Polar capacitor C16 composition；The DRC pin of described process chip U3 is connected with IPK pin, its CII pin and polar capacitor
The positive pole of C19 is connected；The base stage of described audion VT3 is connected with the N pole of diode D13；Described polar capacitor C19's is negative
Pole ground connection.
Described quadravalence active filter circuit by amplifier P1, amplifier P2, amplifier P3, amplifier P4, audion VT2,
Negative pole negative input with amplifier P1 after resistance R22 is connected, positive pole after resistance R24 with the outfan of amplifier P1
The polar capacitor C11 being connected, positive pole is connected with the electrode input end of amplifier P1, the negative pole of negative pole and polar capacitor C11
The input being collectively forming quadravalence active filter circuit polar capacitor C10, the N pole being connected with variable frequency drive are through resistance
The diode D9 that after R28, the base stage with audion VT2 is connected, P pole is connected with the positive pole of polar capacitor C11, negative pole with put
The polar capacitor C12 that electrode input end is connected, positive pole is connected with the P pole of diode D9 after resistance R27 of big device P4, just
Pole negative input with amplifier P3 after adjustable resistance R31 is connected, negative pole is connected with the negative input of amplifier P4
Polar capacitor C15, the N pole connect outfan with amplifier P1 after resistance R23 is connected, P pole after resistance R21 with amplifier
Diode D8, the P pole that the electrode input end of P1 is connected sequentially extremely is connected through resistance R29 N with diode D8 after resistance R25
Connect, diode D10 that N pole electrode input end with amplifier P3 after resistance R32 is connected, negative pole after resistance R30 with put
The polar capacitor C13 that big device P2 electrode input end is connected, positive pole outfan with amplifier P1 after resistance R26 is connected,
The polar capacitor C14 that negative pole is connected with the outfan of amplifier P4, positive pole is connected with the electrode input end of amplifier P4, with
And the inductance L4 composition that one end is connected with the P pole of diode D10, the other end is connected with the outfan of amplifier P4；Described
The outfan of amplifier P1 is connected with the electrode input end of amplifier P2；The emitter stage of described audion VT2 and amplifier P2
Outfan be connected；The outfan of described amplifier P2 is connected with the electrode input end of amplifier P3；Described amplifier P4
Electrode input end be connected with the colelctor electrode of audion VT2, its outfan is connected with the outfan of amplifier P3, puts simultaneously
The big negative input of device P4 and the outfan of amplifier P3 are collectively forming the outfan of quadravalence active filter circuit.
Described current detection circuit is connected with the COMP pin of control chip U2 by negative pole, the P of positive pole and diode D3
Polar capacitor C4, the P pole that pole is connected is connected with the COMP pin of control chip U2, N pole after resistance R7 with polar capacitor
The diode D4 that the positive pole of C4 is connected, positive pole is sequentially connected through resistance R9 ISEN pin with control chip U2 after resistance R8
Connect, polar capacitor C5 that negative pole is connected with the positive pole of polar capacitor C4, and one end is connected with the CT pin of control chip U2
Connect, resistance R10 that the other end is connected with the negative pole of polar capacitor C5 composition；The negative pole of described polar capacitor C5 respectively with control
The GND pin of chip U2 triggers ground connection after circuit is connected with field effect transistor.
Described field effect transistor triggers circuit by field effect transistor MOS, N pole after resistance R12 with the source electrode phase of field effect transistor MOS
The diode D5 that connection, P pole are connected with the VREF pin of control chip U2 after resistance R11, negative pole and field effect transistor MOS
Polar capacitor C6, P electrode resistance R16 that grid is connected, positive pole is connected with the OUT pin of control chip U2 after resistance R15
Be connected with the drain electrode of field effect transistor MOS afterwards, diode that N pole is connected with the source electrode of field effect transistor MOS after resistance R13
D6, and positive pole source electrode with field effect transistor MOS after resistance R14 is connected, negative pole is connected with the source electrode of field effect transistor MOS
Polar capacitor C7 composition；The source electrode of described field effect transistor MOS respectively with negative pole and the GND of control chip U2 of polar capacitor C5
Pin be connected after ground connection；The drain electrode of described field effect transistor MOS triggers the outfan of circuit as field effect transistor and opens with constant current
Galvanic electricity road is connected.
Described constant current start-up circuit is connected with the emitter stage of audion VT1 by audion VT1, N pole, P pole and field effect
The diode D2 that the drain electrode of pipe MOS is connected, positive pole colelctor electrode with audion VT1 after resistance R4 is connected, minus earth
Polar capacitor C3, N pole VCC pin with control chip U2 after resistance R2 be connected, P pole whole with diode after resistance R1
The diode D1 that is connected of cathode output end of stream device U1, and positive pole base stage with audion VT1 after resistance R3 is connected,
Outfan that negative pole is collectively forming constant current start-up circuit with the N pole of diode D2 the polarity electricity being connected with variable frequency drive
Hold C2 composition；The base stage of described audion VT1 is connected with the cathode output end of diode rectifier U1.
Described variable frequency drive by transformator T, positive pole non-with transformator T secondary inductance coil L3 after resistance R20
Same Name of Ends is connected, negative pole is sequentially connected through resistance R18 Same Name of Ends with transformator T secondary inductance coil L3 after resistance R17
Polar capacitor C9, the N pole connect is connected with the negative pole of polar capacitor C9, P pole after resistance R19 with transformator T secondary inductance line
The diode D7 that is connected of Same Name of Ends of circle L3, and negative pole is connected with the N pole of diode D7, positive pole and transformator T secondary
The polar capacitor C8 composition that the Same Name of Ends of inductance coil L3 is connected；The Same Name of Ends of described transformator T former limit inductance coil L1 with
The negative pole of polar capacitor C2 is connected, and the non-same polarity of its inductance coil L1 is connected with the N pole of diode D2；Described transformator
The Same Name of Ends of T former limit inductance coil L2 is connected with the VCC pin of control chip U2, and the non-same polarity of its inductance coil L2 connects
Ground；The N pole of described diode D7 is connected with the negative pole of polar capacitor C10；Described transformator T secondary inductance coil L3's is of the same name
End negative pole with polar capacitor C11 after resistance R17 is connected.
For the practical effect of the present invention, it is real that described control chip U2 the most preferentially uses the integrated chip of UC3843AN
Existing；The most described process chip U3 the most preferentially have employed the integrated chip of MC34063 and realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention has stronger load capacity, can regulate output electric current accurately, and the present invention can also simultaneously
Eliminate the harmonic wave in electric current, and the vibration frequency of the output electric current of the present invention is less than the 5%～8% of reference frequency, thus this
Invention effectively guarantees the stability of cold light LED lamp brightness.
(2) energy consumption of the present invention is low, and the energy consumption of the existing power circuit of its observable index reduces more than 60%, thus it is born
Loading capability improves more than 70% than the load capacity of existing LED power circuit, and the present invention can provide for many LED simultaneously
Stable operating current.
(3) one power frequency can be converted to another kind power frequency according to the situation of the required electric current of load by the present invention,
Effectively guarantee that LED can keep stable brightness under different quantity.
(4) service life that can effectively extend LED of the present invention, the electricity of more than 50% can be saved simultaneously, thus full
Foot people to LED control system in the demand of energy-conservation aspect.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the quadravalence active filter circuit of the present invention.
Fig. 3 is the electrical block diagram that the present invention is lost suppression circuit.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U2, diode rectifier U1, resistance R5, resistance R6, polarity electricity
Holding C1, diode D3, suppression circuit, quadravalence active filter circuit, constant current start-up circuit are lost, field effect transistor triggers circuit, electricity
Current detection circuit, and variable frequency drive composition.
Wherein, the negative pole of polar capacitor C1 be connected with the cathode output end of diode rectifier U1, positive pole and diode
The cathode output end of commutator U1 be connected after ground connection.Loss suppression circuit is connected with the VFB pin of control chip U2.Two poles
The N pole of pipe D3 is connected with loss suppression circuit, P pole sequentially after resistance R5 and resistance R6 with the VCC pin of control chip U2
It is connected.Field effect transistor triggers circuit and is connected with OUT pin and the VREF pin of control chip U2 the most respectively.Current detecting electricity
Road is connected with control chip U2.Constant current start-up circuit is serially connected in the VCC pin of control chip U2 and triggers circuit with field effect transistor
Between.Variable frequency drive is connected with constant current start-up circuit.Quadravalence active filter circuit is connected with variable frequency drive.
Described variable frequency drive is connected with the VCC pin of control chip U2；The positive pole of described diode rectifier U1
Outfan is connected with constant current start-up circuit；The P pole of described diode D3 is connected with current detection circuit；Described control chip
The GND pin ground connection of U2, its ISEN pin is connected with CT pin.
Further, described current detection circuit is by resistance R7, resistance R8, resistance R9, resistance R10, polar capacitor C4, pole
Property electric capacity C5, and diode D4 composition.
During connection, the negative pole of polar capacitor C4 is connected with the COMP pin of control chip U2, the P of positive pole and diode D3
Pole is connected.The P pole of diode D4 is connected with the COMP pin of control chip U2, N pole after resistance R7 with polar capacitor C4
Positive pole be connected.The positive pole of polar capacitor C5 is sequentially connected through resistance R9 ISEN pin with control chip U2 after resistance R8
Connect, negative pole is connected with the positive pole of polar capacitor C4.Resistance R10 one end is connected with the CT pin of control chip U2, the other end
It is connected with the negative pole of polar capacitor C5.The negative pole of described polar capacitor C5 respectively with the GND pin of control chip U2 and field effect
Ground connection after circuit is connected should be triggered by pipe.
Wherein, described field effect transistor triggers circuit by field effect transistor MOS, resistance R11, resistance R12, resistance R13, resistance
R14, resistance R15, resistance R16, polar capacitor C6, polar capacitor C7, diode D5, and diode D6 form.
During connection, the N pole of diode D5 source electrode with field effect transistor MOS after resistance R12 is connected, P pole is through resistance R11
It is connected with the VREF pin of control chip U2 afterwards.The negative pole of polar capacitor C6 is connected with the grid of field effect transistor MOS, positive pole
After resistance R15, the OUT pin with control chip U2 is connected.With field effect transistor MOS after P electrode resistance R16 of diode D6
Drain electrode is connected, N pole source electrode with field effect transistor MOS after resistance R13 is connected.The positive pole of polar capacitor C7 is through resistance R14
Be connected with the source electrode of field effect transistor MOS afterwards, negative pole is connected with the source electrode of field effect transistor MOS.
The source electrode of described field effect transistor MOS is connected with the negative pole of polar capacitor C5 and the GND pin of control chip U2 respectively
Connect rear ground connection；Described field effect transistor MOS drain electrode as field effect transistor trigger circuit outfan and with constant current start-up circuit phase
Connect.
Further, described constant current start-up circuit is by audion VT1, resistance R1, resistance R2, resistance R3, resistance R4, pole
Property electric capacity C2, polar capacitor C3, diode D1, and diode D2 composition.
During connection, the N pole of diode D2 is connected with the emitter stage of audion VT1, the drain electrode of P pole and field effect transistor MOS
It is connected.The positive pole of polar capacitor C3 colelctor electrode with audion VT1 after resistance R4 is connected, minus earth.Diode D1
N pole VCC pin with control chip U2 after resistance R2 be connected, P pole after resistance R1 with diode rectifier U1 just
Pole outfan is connected.The positive pole of polar capacitor C2 base stage with audion VT1 after resistance R3 is connected, negative pole and diode
The N pole of D2 is collectively forming the outfan of constant current start-up circuit and is connected with variable frequency drive.The base stage of described audion VT1
It is connected with the cathode output end of diode rectifier U1.
Meanwhile, described variable frequency drive is by transformator T, resistance R17, resistance R18, resistance R19, resistance R20, polarity electricity
Hold C8, polar capacitor C9, and diode D7 composition.
During connection, the positive pole of polar capacitor C9 after resistance R20 with the non-same polarity phase of transformator T secondary inductance coil L3
Connect, negative pole is sequentially connected through resistance R18 Same Name of Ends with transformator T secondary inductance coil L3 after resistance R17.Diode
The N pole of D7 is connected with the negative pole of polar capacitor C9, P pole after resistance R19 with the Same Name of Ends of transformator T secondary inductance coil L3
It is connected.The negative pole of polar capacitor C8 is connected with the N pole of diode D7, positive pole is same with transformator T secondary inductance coil L3's
Name end is connected.
The Same Name of Ends of described transformator T former limit inductance coil L1 is connected with the negative pole of polar capacitor C2, its inductance coil
The non-same polarity of L1 is connected with the N pole of diode D2；The Same Name of Ends of described transformator T former limit inductance coil L2 and control chip
The VCC pin of U2 is connected, the non-same polarity ground connection of its inductance coil L2；The N pole of described diode D7 is with polar capacitor C10's
Negative pole is connected；The Same Name of Ends of described transformator T secondary inductance coil L3 after resistance R17 with the negative pole phase of polar capacitor C11
Connect.
As in figure 2 it is shown, described quadravalence active filter circuit is by amplifier P1, amplifier P2, amplifier P3, amplifier P4,
Audion VT2, resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, resistance R28, electricity
Resistance R29, resistance R30, adjustable resistance R31, resistance R32, polar capacitor C10, polar capacitor C11, polar capacitor C12, polarity electricity
Hold C13, polar capacitor C14, polar capacitor C15, diode D8, diode D9, diode D10, and inductance L4 composition.
During connection, the negative pole of polar capacitor C11 negative input with amplifier P1 after resistance R22 is connected, positive pole
After resistance R24, the outfan with amplifier P1 is connected.The electrode input end phase of the positive pole of polar capacitor C10 and amplifier P1
The negative pole of connection, negative pole and polar capacitor C11 is collectively forming input and the variable frequency drive of quadravalence active filter circuit
It is connected.The N pole of diode D9 base stage with audion VT2 after resistance R28 is connected, the positive pole of P pole and polar capacitor C11
It is connected.
Wherein, the negative pole of polar capacitor C12 be connected with the electrode input end of amplifier P4, positive pole after resistance R27 with
The P pole of diode D9 is connected.The positive pole of polar capacitor C15 after adjustable resistance R31 with the negative input phase of amplifier P3
Connect, negative pole is connected with the negative input of amplifier P4.The N pole of diode D8 defeated with amplifier P1 after resistance R23
Go out that end is connected, P pole electrode input end with amplifier P1 after resistance R21 is connected.
Meanwhile, the P pole of diode D10 be sequentially connected through resistance R29 N pole with diode D8 after resistance R25, N pole
After resistance R32, the electrode input end with amplifier P3 is connected.The negative pole of polar capacitor C13 after resistance R30 with amplifier
P2 electrode input end is connected, positive pole outfan with amplifier P1 after resistance R26 is connected.The negative pole of polar capacitor C14
Be connected with the outfan of amplifier P4, positive pole is connected with the electrode input end of amplifier P4.One end of inductance L4 and two poles
The P pole of pipe D10 is connected, the other end is connected with the outfan of amplifier P4.
The outfan of described amplifier P1 is connected with the electrode input end of amplifier P2；The transmitting of described audion VT2
Pole is connected with the outfan of amplifier P2；The outfan of described amplifier P2 is connected with the electrode input end of amplifier P3；
The electrode input end of described amplifier P4 is connected with the colelctor electrode of audion VT2, its outfan and the outfan of amplifier P3
Being connected, the negative input of amplifier P4 is collectively forming the defeated of quadravalence active filter circuit with the outfan of amplifier P3 simultaneously
Go out end.
As it is shown on figure 3, described loss suppression circuit is by processing chip U3, audion VT3, resistance R33, resistance R34, resistance
R35, resistance R36, resistance R37, resistance R38, resistance R39, resistance R40, resistance R41, resistance R42, resistance R43, resistance R44,
Resistance R45, inductance L5, polar capacitor C16, polar capacitor C17, polar capacitor C18, polar capacitor C19, diode D11, two poles
Pipe D12, diode D13, and diode D14 form.
During connection, the P pole of diode D12 is connected with the IPK pin processing chip U3 after resistance R33, N pole and process
The VCC pin of chip U3 is connected.The P pole of diode D11 sequentially after resistance R35 and resistance R34 with process chip U3 DRC
Pin, N pole are connected with the SWC pin processing chip U3 after resistance R37.The positive pole of polar capacitor C17 after resistance R39 with
The N pole of diode D11 is connected, negative pole emitter stage with audion VT3 after resistance R41 is connected.
Wherein, one end of inductance L5 be connected with the SWE pin processing chip U3, the base stage of the other end and audion VT3
It is connected.The P pole of diode D14 emitter stage with audion VT3 after resistance R42 is connected, N pole is as loss suppression circuit
Outfan and be connected with the VFB pin of control chip U2.The negative pole of polar capacitor C18 after resistance R44 with diode D14
P pole be connected, positive pole colelctor electrode with audion VT3 after resistance R43 is connected.
Meanwhile, the positive pole of polar capacitor C19 be connected with the N pole of diode D14, negative pole after resistance R45 with polarity electricity
The negative pole holding C18 is connected.P pole with diode D12 after resistance R36, the P pole of diode D13 is connected, N pole is through resistance
After R40, the positive pole with polar capacitor C18 is connected.The positive pole of polar capacitor C16 is managed with the RC of control chip U2 after resistance R38
Foot is connected, negative pole is connected with the N pole of diode D13.
The DRC pin of described process chip U3 is connected with IPK pin, the positive pole phase of its CII pin and polar capacitor C19
Connect；The base stage of described audion VT3 is connected with the N pole of diode D13；The minus earth of described polar capacitor C19.
During operation, the present invention has stronger load capacity, can regulate output electric current accurately, the present invention simultaneously
The harmonic wave in electric current can also be eliminated, and the vibration frequency of the output electric current of the present invention is less than the 5%～8% of reference frequency, from
And the present invention effectively guarantees the stability of cold light LED lamp brightness.The energy consumption of the present invention is low, the existing power circuit of its observable index
Energy consumption reduce more than 60%, thus its load capacity than the load capacity of existing LED power circuit improve 70% with
On, the present invention can provide stable operating current for many LED simultaneously.Meanwhile, the present invention can not only be according to the required electricity of load
One power frequency is converted to another kind of power frequency by the situation of stream, effectively guarantees that LED can under different quantity
Keep stable brightness；And, in the service life that can effectively extend LED of the present invention, the electricity of more than 50% can be saved simultaneously
Amount, thus meet people to LED control system in the demand of energy-conservation aspect.For the practical effect of the present invention, institute
Stating control chip U2 the most preferentially uses the integrated chip of UC3843AN to realize.
According to above-described embodiment, can well realize the present invention.
Claims (9)
1. a quadravalence active power filtering type cold light LED loss suppression power supply, it is characterised in that mainly by control chip U2, two
Pole pipe commutator U1, negative pole is connected with the cathode output end of diode rectifier U1, positive pole is negative with diode rectifier U1's
Pole outfan be connected after the polar capacitor C1 of ground connection, the loss suppression circuit being connected with the VFB pin of control chip U2, N
Suppression circuit is connected, P pole is sequentially connected with the VCC pin of control chip U2 after resistance R5 and resistance R6 with loss in pole
Diode D3, the field effect transistor being connected with OUT pin and the VREF pin of control chip U2 respectively triggers circuit, with control core
The current detection circuit that sheet U2 is connected, the VCC pin and the field effect transistor that are serially connected in control chip U2 trigger the perseverance between circuit
Stream start-up circuit, the variable frequency drive being connected with constant current start-up circuit, and the quadravalence being connected with variable frequency drive
Active filter circuit forms；Described variable frequency drive is connected with the VCC pin of control chip U2；Described diode rectifier
The cathode output end of U1 is connected with constant current start-up circuit；The P pole of described diode D3 is connected with current detection circuit；Described
The GND pin ground connection of control chip U2, its ISEN pin is connected with CT pin.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 1, it is characterised in that
Described loss suppression circuit by processing chip U3, audion VT3, P pole after resistance R33 with process chip U3 IPK pin phase
Connect, N pole with diode D12, the P pole that is connected of VCC pin processing chip U3 sequentially after resistance R35 and resistance R34 and
Process the diode D11 that the DRC pin of chip U3, N pole are connected after resistance R37, positive pole with the SWC pin processing chip U3
After resistance R39, the N pole with diode D11 is connected, negative pole emitter stage with audion VT3 after resistance R41 is connected
Polar capacitor C17, one end and the electricity that SWE pin is connected, the other end is connected with the base stage of audion VT3 processing chip U3
Sense L5, P pole emitter stage with audion VT3 after resistance R42 is connected, N pole as loss suppression circuit outfan and with
The diode D14 that the VFB pin of control chip U2 is connected, negative pole P pole with diode D14 after resistance R44 is connected, just
The polar capacitor C18 that pole colelctor electrode with audion VT3 after resistance R43 is connected, positive pole is extremely connected with the N of diode D14
Connect, polar capacitor C19, P pole that negative pole negative pole with polar capacitor C18 after resistance R45 is connected after resistance R36 with two poles
The diode D13 that the P pole of pipe D12 is connected, N pole positive pole with polar capacitor C18 after resistance R40 is connected, and positive pole
The polar capacitor C16 that RC pin with control chip U2 is connected after resistance R38, negative pole is connected with the N pole of diode D13
Composition；The DRC pin of described process chip U3 is connected with IPK pin, and its CII pin is connected with the positive pole of polar capacitor C19
Connect；The base stage of described audion VT3 is connected with the N pole of diode D13；The minus earth of described polar capacitor C19.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 2, it is characterised in that
Described quadravalence active filter circuit is by amplifier P1, amplifier P2, amplifier P3, amplifier P4, and audion VT2, negative pole is through electricity
Be connected with the negative input of amplifier P1 after resistance R22, positive pole outfan with amplifier P1 after resistance R24 is connected
Polar capacitor C11, positive pole is connected with the electrode input end of amplifier P1, negative pole is collectively forming with the negative pole of polar capacitor C11
The input of quadravalence active filter circuit polar capacitor C10, the N pole that is connected with variable frequency drive after resistance R28 with
The diode D9 that the base stage of audion VT2 is connected, P pole is connected with the positive pole of polar capacitor C11, negative pole is with amplifier P4's
The polar capacitor C12 that electrode input end is connected, positive pole is connected with the P pole of diode D9 after resistance R27, positive pole is through adjustable
The polarity that after resistance R31, the negative input with amplifier P3 is connected, negative pole is connected with the negative input of amplifier P4
Electric capacity C15, N pole outfan with amplifier P1 after resistance R23 is connected, P pole after resistance R21 with the positive pole of amplifier P1
Diode D8, the P pole that input is connected sequentially is connected through resistance R29 N pole with diode D8 after resistance R25, N pole warp
The diode D10 that after resistance R32, electrode input end with amplifier P3 is connected, negative pole after resistance R30 with amplifier P2 just
The polar capacitor C13 that pole input is connected, positive pole outfan with amplifier P1 after resistance R26 is connected, negative pole with put
The polar capacitor C14 that outfan is connected, positive pole is connected with the electrode input end of amplifier P4 of big device P4, and one end and
The inductance L4 composition that the P pole of diode D10 is connected, the other end is connected with the outfan of amplifier P4；Described amplifier P1
Outfan be connected with the electrode input end of amplifier P2；The emitter stage of described audion VT2 and the outfan of amplifier P2
It is connected；The outfan of described amplifier P2 is connected with the electrode input end of amplifier P3；The positive pole of described amplifier P4 is defeated
Entering end to be connected with the colelctor electrode of audion VT2, its outfan is connected with the outfan of amplifier P3, simultaneously amplifier P4
The outfan of negative input and amplifier P3 is collectively forming the outfan of quadravalence active filter circuit.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 3, it is characterised in that
Described current detection circuit is connected with the COMP pin of control chip U2 by negative pole, positive pole is connected with the P pole of diode D3
Polar capacitor C4, P pole be connected with the COMP pin of control chip U2, N pole after resistance R7 with the positive pole of polar capacitor C4
The diode D4 being connected, positive pole is sequentially connected through resistance R9 ISEN pin with control chip U2 after resistance R8, negative pole
The polar capacitor C5 being connected with the positive pole of polar capacitor C4, and one end is connected with the CT pin of control chip U2, another
The resistance R10 composition that end is connected with the negative pole of polar capacitor C5；The negative pole of described polar capacitor C5 respectively with control chip U2
GND pin and field effect transistor trigger ground connection after circuit is connected.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 4, it is characterised in that
Described field effect transistor triggers circuit by field effect transistor MOS, and N pole source electrode with field effect transistor MOS after resistance R12 is connected, P pole
The diode D5 being connected with the VREF pin of control chip U2 after resistance R11, negative pole is connected with the grid of field effect transistor MOS
Connect, imitate with field after polar capacitor C6, P electrode resistance R16 that positive pole is connected with the OUT pin of control chip U2 after resistance R15
Should drain electrode is connected, N pole is connected with the source electrode of field effect transistor MOS after resistance R13 the diode D6, Yi Jizheng of pipe MOS
Pole after resistance R14 with field effect transistor MOS the polarity that source electrode is connected, negative pole is connected with the source electrode of field effect transistor MOS electricity
Hold C7 composition；The source electrode of described field effect transistor MOS is connected with the negative pole of polar capacitor C5 and the GND pin of control chip U2 respectively
Connect rear ground connection；Described field effect transistor MOS drain electrode as field effect transistor trigger circuit outfan and with constant current start-up circuit phase
Connect.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 5, it is characterised in that
Described constant current start-up circuit is connected with the emitter stage of audion VT1 by audion VT1, N pole, the leakage of P pole and field effect transistor MOS
The diode D2 that pole is connected, positive pole colelctor electrode with audion VT1 after resistance R4 is connected, the polar capacitor of minus earth
C3, N pole VCC pin with control chip U2 after resistance R2 is connected, P pole after resistance R1 with diode rectifier U1 just
The diode D1 that pole outfan is connected, and positive pole base stage with audion VT1 after resistance R3 is connected, negative pole and two poles
Outfan that the N pole of pipe D2 is collectively forming constant current start-up circuit the polar capacitor C2 composition being connected with variable frequency drive；
The base stage of described audion VT1 is connected with the cathode output end of diode rectifier U1.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 6, it is characterised in that
Described variable frequency drive by transformator T, positive pole after resistance R20 with the non-same polarity phase of transformator T secondary inductance coil L3
Connect, polarity that negative pole is sequentially connected through resistance R18 Same Name of Ends with transformator T secondary inductance coil L3 after resistance R17
Electric capacity C9, N pole is connected with the negative pole of polar capacitor C9, P pole same with transformator T secondary inductance coil L3 after resistance R19
The name diode D7 that is connected of end, and negative pole is connected with the N pole of diode D7, positive pole and transformator T secondary inductance coil
The polar capacitor C8 composition that the Same Name of Ends of L3 is connected；The Same Name of Ends of described transformator T former limit inductance coil L1 and polar capacitor
The negative pole of C2 is connected, and the non-same polarity of its inductance coil L1 is connected with the N pole of diode D2；Described transformator T former limit electricity
The Same Name of Ends of sense coil L2 is connected with the VCC pin of control chip U2, the non-same polarity ground connection of its inductance coil L2；Described two
The N pole of pole pipe D7 is connected with the negative pole of polar capacitor C10；The Same Name of Ends of described transformator T secondary inductance coil L3 is through resistance
After R17, the negative pole with polar capacitor C11 is connected.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 7, it is characterised in that
Described control chip U2 is the integrated chip of UC3843AN.
A kind of quadravalence active power filtering type cold light LED loss suppression power supply the most according to claim 7, it is characterised in that
Described process chip U3 is the integrated chip of MC34063.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610579649.2A CN106061040A (en) | 2016-07-21 | 2016-07-21 | Loss inhibition power supply for four-order active filtering type cold light LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610579649.2A CN106061040A (en) | 2016-07-21 | 2016-07-21 | Loss inhibition power supply for four-order active filtering type cold light LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106061040A true CN106061040A (en) | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610579649.2A Pending CN106061040A (en) | 2016-07-21 | 2016-07-21 | Loss inhibition power supply for four-order active filtering type cold light LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106061040A (en) |
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2016
- 2016-07-21 CN CN201610579649.2A patent/CN106061040A/en active Pending
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