CN109474184A - A kind of high power constant compresses switch power supply - Google Patents
A kind of high power constant compresses switch power supply Download PDFInfo
- Publication number
- CN109474184A CN109474184A CN201811569285.5A CN201811569285A CN109474184A CN 109474184 A CN109474184 A CN 109474184A CN 201811569285 A CN201811569285 A CN 201811569285A CN 109474184 A CN109474184 A CN 109474184A
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- China
- Prior art keywords
- circuit
- pfc
- switch
- main power
- chip
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
Abstract
The present invention relates to switch power technology fields, especially a kind of high power constant compresses switch power supply, including input rectifying filter circuit, pfc circuit, main power circuit and current feedback circuit, power grid electric signal flows into pfc circuit after input rectifying filter circuit rectifying and wave-filtering, pfc circuit output is connect with main power circuit, the output voltage signal of main power circuit is fed back to the Voltage Feedback input pin of main power chip by main power circuit constant voltage output to external loading, current feedback circuit.It includes the pfc circuit after optimizing, the main power circuit comprising double tube positive exciting module that the present invention, which uses, improves power supply stability, solves the problems, such as existing constant pressure Switching Power Supply because self structure power can not further increase.
Description
Technical field
The present invention relates to switch power technology field, especially a kind of high power constant compresses switch power supply.
Background technique
Outdoor brightening is indispensable part in Modern Landscape, its not only itself ornamental value with higher, go back landscape,
The coordinating and unifying of scenic spot history culture and ambient enviroment is suitable in Landscape Places such as square, residential area, public lawns.At present
The illuminating device of mainstream is LED, and Switching Power Supply processing input voltage, the output of Switching Power Supply are generally required between LED and alternating current
The practical luminous power of power match LED, but powerful lighting engineering generallys use constant pressure type Switching Power Supply, market at present
The output power maximum of constant pressure type Switching Power Supply in volume production can only accomplish 400W, for the high-power lighting engineering of 400W or more
Then needing to use more Switching Power Supplies could be adapted to, and the installation of power supply and later period maintenance are costly.
Summary of the invention
It is an object of the invention to solve the peak power output of existing volume production constant pressure Switching Power Supply to be difficult to be more than 400W's
Problem.
To achieve the above object, the present invention provides a kind of high power constant and compresses switch power supply, including input rectifying filter circuit,
Pfc circuit, main power circuit and current feedback circuit, in which:
Pfc circuit includes PFC chip IC 1, the first energy storage inductor T, booster diode D1 and PFC switching tube Q1, the first storage
Energy inductance T is separately connected the output end of input rectifying filter circuit and the output end of pfc circuit, the gate driving of PFC chip IC 1
Pin connects the grid of PFC switching tube Q1, and booster diode D1 is arranged on the output end of pfc circuit；
Main power circuit includes main power chip IC2, double tube positive exciting module and output filter module, main power chip IC2
It is equipped with the first transformer T1 between double tube positive exciting module, the second transformation is equipped between double tube positive exciting module and output filter module
Device T2；Main power chip IC2 is connect by the first transformer T1 with double tube positive exciting module, and double tube positive exciting module passes through the second transformation
Device T2 is connect with output filter module；
Power grid electric signal flows into pfc circuit, pfc circuit output and main power after input rectifying filter circuit rectifying and wave-filtering
Circuit connection, main power circuit constant voltage output to external loading, current feedback circuit is by the output voltage signal of main power circuit
Feed back to the Voltage Feedback input pin of main power chip IC2.
Preferably, pfc circuit is the active power factor correction circuit of booster type.
Further, PFC chip IC 1 is I6562 cake core.
Further, the side winding of the first energy storage inductor T is separately connected the output end and PFC of input rectifying filter circuit
The drain electrode of switching tube Q1, the zero passage detection pin of the other side winding connection PFC chip IC 1 of the first energy storage inductor T, PFC chip
The starting pin and multiplier input pin of IC1 takes electricity from the output end of input rectifying filter circuit.
Preferably, the armature winding quantity of the first transformer T1 is one, this grade of winding quantity is two；Main power core
The output pin of piece IC2 controls respectively is connected with the first transistor Q2 and second transistor Q3, the first transistor Q2 and
The logic function of two-transistor Q3 meets the output end of pfc circuit, the first transistor Q2 and second on the contrary and by the first transistor Q2
The collector of transistor Q3 is connect with one end of the first transformer T1 primary winding.
Further, double tube positive exciting module includes first switch tube Q4 and second switch Q5；The leakage of first switch tube Q4
The extremely other output end for connecing pfc circuit, the grid of first switch tube Q4 connect the secondary windings of the first transformer T1, first switch tube
The source electrode of Q4 is separately connected one end of the armature winding of the second transformer T2, and the grid of first switch tube Q4 is equipped with the first spike electricity
Pressing tongs unit；The output end of pfc circuit is connect by the drain electrode of second switch Q5, the grid connection second of second switch Q5 becomes
The secondary windings of depressor T2, the source electrode of second switch Q5 are separately connected the other end of the armature winding of the second transformer T2, the
The grid of two switching tube Q5 is equipped with the second peak voltage and clamps down on unit.
Preferably, current feedback circuit includes optocoupler PH, voltage stabilizing chip IC3 and heat portective switch TTC, the pressure stabilizing core
The light-emitting component of optocoupler PH is connect by piece IC3, the cathode of voltage stabilizing chip IC3 is opposite with the cathode direction of optocoupler PH light-emitting component；Institute
The one end for stating heat portective switch TTC connects the power pins of main power chip IC2, and the other end of heat portective switch TTC connects light
The light-receiving device of coupling PH.
Beneficial effects of the present invention: using including the pfc circuit after optimization, the electricity of the main power comprising double tube positive exciting module
Road improves power supply stability, solves the problems, such as existing constant pressure Switching Power Supply because self structure power can not further increase.
Detailed description of the invention
Fig. 1: function structure chart of the invention.
Fig. 2: the principle assumption diagram of pfc circuit.
Fig. 3: the principle assumption diagram of main power circuit and current feedback circuit.
Specific embodiment
To be more clear the purposes, technical schemes and advantages of the embodiment of the present invention, below in conjunction with embodiment and attached drawing,
The invention will be further described.
The present invention provides a kind of high power constant and compresses switch power supply.
Please refer to as shown in Figure 1-3, include input rectifying filter circuit, pfc circuit, main power circuit and current feedback electricity
Road, in which:
Pfc circuit, including PFC chip IC 1, the first energy storage inductor T, booster diode D1 and PFC switching tube Q1, the first storage
Energy inductance T is separately connected the output end of input rectifying filter circuit and the output end of pfc circuit, the gate driving of PFC chip IC 1
Pin connects the grid of PFC switching tube Q1, and booster diode D1 is arranged on the output end of pfc circuit.
Main power circuit includes main power chip IC2, double tube positive exciting module and output filter module, main power chip IC2
The first transformer T1 is equipped between double tube positive exciting module, it should be noted that main power chip IC2 is NCP1252 cake core；
The second transformer T2 is equipped between double tube positive exciting module and output filter module；Main power chip IC2 passes through the first transformer T1
It is connect with double tube positive exciting module, double tube positive exciting module is connect by the second transformer T2 with output filter module.
Power grid electric signal flows into pfc circuit, pfc circuit output and main power after input rectifying filter circuit rectifying and wave-filtering
Circuit connection, main power circuit constant voltage output to external loading, current feedback circuit is by the output voltage signal of main power circuit
Feed back to the Voltage Feedback input pin of main power chip IC2.
Pfc circuit is the active power factor correction circuit of booster type as a preferred technical solution, and uses I6562
Cake core is as PFC chip IC 1.Specifically, the side winding of the first energy storage inductor T is separately connected input rectifying filter circuit
The zero passage detection of the drain electrode of output end and PFC switching tube Q1, the other side winding connection PFC chip IC 1 of the first energy storage inductor T is drawn
Foot, the starting pin and multiplier input pin of PFC chip IC 1 take electricity from the output end of input rectifying filter circuit.
The armature winding quantity of the first transformer T1 is one as a preferred technical solution, this grade of winding quantity is two
It is a；The output pin of main power chip IC2 controls respectively is connected with the first transistor Q2 and second transistor Q3, and described first is brilliant
The logic function of body pipe Q2 and second transistor Q3 connect the output end of pfc circuit, first crystal on the contrary and by the first transistor Q2
The collector of pipe Q2 and second transistor Q3 are connect with one end of the first transformer T1 primary winding.
Specifically, double tube positive exciting module includes first switch tube Q4 and second switch Q5；The drain electrode of first switch tube Q4
Side connects the output end of pfc circuit, and the grid of first switch tube Q4 connects the secondary windings of the first transformer T1, first switch tube Q4
Source electrode be separately connected the second transformer T2 armature winding one end, the grid of first switch tube Q4 is equipped with the first peak voltage
Clamp down on unit；The output end of pfc circuit is connect by the drain electrode of second switch Q5, the grid of second switch Q5 connects the second transformation
The secondary windings of device T2, the source electrode of second switch Q5 are separately connected the other end of the armature winding of the second transformer T2, and second
The grid of switching tube Q5 is equipped with the second peak voltage and clamps down on unit.
It includes the first clamp diode and resistance R34, R35 that first peak voltage, which clamps down on unit, and the second peak voltage is clamped down on
Unit includes the second clamp diode and resistance R36, R38；First peak voltage clamps down on unit and the second peak voltage clamps down on list
Peak voltage on the first transformer T1 of member limitation.
The logic function of the first transistor Q2 and second transistor Q3 are on the contrary, wherein the first transistor Q2 is NPN type crystal
Pipe, second transistor Q3 are PNP transistor, and second transistor Q3 is as reverse protection structure, when main power chip IC2 is exported
When signal to the base stage of the first transistor Q2 and second transistor Q3, the first transistor Q2 conducting, and control signal is sent to
Double tube positive exciting module, second transistor Q3 shield.
Current feedback circuit includes optocoupler (PH), voltage stabilizing chip IC3 and heat portective switch as a preferred technical solution,
The light-emitting component of optocoupler PH, the cathode of voltage stabilizing chip IC3 and the yin of optocoupler PH light-emitting component are connect by TTC, the voltage stabilizing chip IC3
Extreme direction is opposite；One end of heat portective switch TTC connects the power pins of main power chip IC2, and heat portective switch TTC's is another
The light-receiving device of end connection optocoupler PH.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to the foregoing embodiments
Invention is explained in detail, for those skilled in the art, still can be to foregoing embodiments institute
The technical solution of record is modified or equivalent replacement of some of the technical features.It is all in spirit of the invention and
Any modification, equivalent substitution, improvement and etc. within principle, should all be included in the protection scope of the present invention.
Claims (7)
- The power supply 1. a kind of high power constant compresses switch, including input rectifying filter circuit, pfc circuit, main power circuit and electric current are anti- Current feed circuit, it is characterised in that:Pfc circuit includes PFC chip (IC1), the first energy storage inductor (T), booster diode (D1) and PFC switching tube (Q1), and One energy storage inductor (T) is separately connected the output end of input rectifying filter circuit and the output end of pfc circuit, PFC chip (IC1) Gate driving pin connects the grid of PFC switching tube (Q1), and booster diode (D1) is arranged on the output end of pfc circuit；Main power circuit includes main power chip (IC2), double tube positive exciting module and output filter module, main power chip (IC2) It is equipped with the first transformer (T1) between double tube positive exciting module, second is equipped between double tube positive exciting module and output filter module and is become Depressor (T2)；Main power chip (IC2) is connect by the first transformer (T1) with double tube positive exciting module, and double tube positive exciting module passes through Second transformer (T2) is connect with output filter module；Power grid electric signal flows into pfc circuit, pfc circuit output and main power circuit after input rectifying filter circuit rectifying and wave-filtering Connection, main power circuit constant voltage output to external loading, current feedback circuit feed back the output voltage signal of main power circuit To the Voltage Feedback input pin of main power chip (IC2).
- The power supply 2. a kind of high power constant according to claim 1 compresses switch, it is characterised in that: the pfc circuit is boosting The active power factor correction circuit of type.
- The power supply 3. a kind of high power constant according to claim 2 compresses switch, it is characterised in that: the PFC chip (IC1) is I6562 cake core.
- The power supply 4. a kind of high power constant according to claim 3 compresses switch, it is characterised in that: first energy storage inductor (T) side winding is separately connected the drain electrode of the output end and PFC switching tube (Q1) of input rectifying filter circuit, the first energy storage electricity Feel the zero passage detection pin of other side winding connection PFC chip (IC1) of (T), the starting pin and multiplication of PFC chip (IC1) Device input pin takes electricity from the output end of input rectifying filter circuit.
- The power supply 5. a kind of high power constant according to claim 1 compresses switch, it is characterised in that: first transformer (T1) Armature winding quantity be one, this grade of winding quantity is two；The output pin of main power chip (IC2) controls connection respectively There are the first transistor (Q2) and second transistor (Q3), the logic function of the first transistor (Q2) and second transistor (Q3) The output end of pfc circuit, the current collection of the first transistor (Q2) and second transistor (Q3) are connect by opposite and the first transistor (Q2) Pole is connect with one end of the first transformer (T1) primary side winding.
- The power supply 6. a kind of high power constant according to claim 5 compresses switch, it is characterised in that: the double tube positive exciting module packet Include first switch tube (Q4) and second switch (Q5)；Connect the output end of pfc circuit by the drain electrode of first switch tube (Q4), first The secondary windings of the grid connection the first transformer (T1) of switching tube (Q4), the source electrode of first switch tube (Q4) are separately connected second One end of the armature winding of transformer (T2), the grid of first switch tube (Q4) are equipped with the first peak voltage and clamp down on unit；The output end of pfc circuit is connect by the drain electrode of second switch (Q5), the grid of second switch (Q5) connects the second transformation The secondary windings of device (T2), the source electrode of second switch (Q5) are separately connected the another of the armature winding of the second transformer (T2) End, the grid of second switch (Q5) are equipped with the second peak voltage and clamp down on unit.
- The power supply 7. a kind of high power constant according to claim 1 compresses switch, it is characterised in that: the current feedback circuit packet Optocoupler (PH), voltage stabilizing chip (IC3) and heat portective switch (TTC) are included, shining for optocoupler (PH) is connect by the voltage stabilizing chip (IC3) The cathode of element, voltage stabilizing chip (IC3) is opposite with the cathode direction of optocoupler (PH) light-emitting component；The heat portective switch (TTC) One end connect the power pins of main power chip (IC2), the light of other end connection optocoupler (PH) of heat portective switch (TTC) Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811569285.5A CN109474184A (en) | 2018-12-19 | 2018-12-19 | A kind of high power constant compresses switch power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811569285.5A CN109474184A (en) | 2018-12-19 | 2018-12-19 | A kind of high power constant compresses switch power supply |
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| CN109474184A true CN109474184A (en) | 2019-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811569285.5A Pending CN109474184A (en) | 2018-12-19 | 2018-12-19 | A kind of high power constant compresses switch power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114759798A (en) * | 2022-05-07 | 2022-07-15 | 电子科技大学 | High-efficiency DC-DC switching power supply |
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