CN106059309A - Output circuit of two-way switch power supply - Google Patents

Output circuit of two-way switch power supply Download PDF

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Publication number
CN106059309A
CN106059309A CN201610424413.1A CN201610424413A CN106059309A CN 106059309 A CN106059309 A CN 106059309A CN 201610424413 A CN201610424413 A CN 201610424413A CN 106059309 A CN106059309 A CN 106059309A
Authority
CN
China
Prior art keywords
switching tube
power supply
electrically connects
electrically
diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610424413.1A
Other languages
Chinese (zh)
Inventor
孙玉民
邵东强
王冬青
张晓臣
王锡强
刘宏彬
王晓东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weihai Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
Weihai Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weihai Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical Weihai Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority to CN201610424413.1A priority Critical patent/CN106059309A/en
Publication of CN106059309A publication Critical patent/CN106059309A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion 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
    • H02M3/325Conversion 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
    • H02M3/335Conversion 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
    • H02M3/33507Conversion 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 with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523Conversion 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 with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/0083Converters characterised by their input or output configuration
    • H02M1/009Converters characterised by their input or output configuration having two or more independently controlled outputs

Abstract

The invention provides an output circuit of a two-way switch power supply. The first output end of a multivibrator is electrically connected with the grid electrode of a first switch tube, the second output end of the first multivibrator is electrically connected with the grid electrode of a second switch tube, the drain electrode of the first switch tube is electrically connected with one end of a first resistor and the grid electrode of a third switch tube respectively, the drain electrode of the second switch tube is electrically connected with one end of a second resistor and the grid electrode of a fourth switch tube respectively, the drain electrode of the third switch tube is electrically connected with one end of a first primary winding, the drain electrode of the fourth switch tube is electrically connected with one end of a second primary winding, a first secondary winding is electrically connected with a first rectification filtering unit, and a second secondary winding is electrically connected with a second rectification filtering unit. Compared with the prior art, based on two-way square-wave pulse output by the multivibrator, after driving power is amplified, isolated, rectified and filtered, a two-way direct-current power supply electrically isolated from a direct-current input power supply can be output, the structure is simple, and the application is wide.

Description

The output circuit of two-way switch power supply
Technical field
The present invention relates to field of switch power, particularly to the output circuit of a kind of two-way switch power supply.
Background technology
Switching Power Supply is indispensable ingredient in modern power electronics devices, and application is the most extensive, The proportion occupied in whole field of power supplies is increasing.Switching Power Supply is mainly by using power inverter to carry out the change of electric energy Change, meet various need for electricity with this.
Current Switching Power Supply mainly includes inverse-excitation type switch power-supply, positive activation type Switching Power Supply and push-pull type Switching Power Supply Deng, although these Switching Power Supplies can realize the electrical isolation of input power and out-put supply, but circuit structure is the most rather Complexity, volume is relatively big, is not suitable for integrated level is requiring use in higher circuit.And general booster switcher power supply and fall Although pusher-type switch power supply circuit structure is simple, but cannot realize the electrical isolation of input power and out-put supply.
Summary of the invention
The technical problem to be solved in the present invention is to overcome prior art breaker in middle circuit construction of electric power complexity, volume relatively Greatly, the defect of the limited grade in application scenario is caused, it is provided that the output circuit of the two-way switch power supply of a kind of simple in construction.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of output circuit of two-way switch power supply, its feature is, including a multivibrator, one first resistance, one second Resistance, one first switching tube, a second switch pipe, one the 3rd switching tube, one the 4th switching tube, one first transformator, one second Transformator, a direct-current input power supplying, one first rectification filtering unit and one second rectification filtering unit, described first transformator Including one first armature winding and one first secondary windings, described second transformator includes one second armature winding and a second time Level winding;
First outfan of described multivibrator electrically connects with the grid of described first switching tube, the second outfan and described the The grid electrical connection of two switching tubes, the drain electrode of described first switching tube one end and the described 3rd with described first resistance respectively is opened Close pipe grid electrical connection, the drain electrode of described second switch pipe respectively with one end of described second resistance and described 4th switching tube Grid electrical connection, the drain electrode of described 3rd switching tube electrically connects with one end of described first armature winding, described 4th switch The drain electrode of pipe electrically connects with one end of described second armature winding, described first switching tube, described second switch pipe, the described 3rd The source electrode of switching tube and described 4th switching tube all with first with reference to electrically connect;
Described direct-current input power supplying for powering to described multivibrator, and respectively with the other end, the institute of described first resistance The other end stating the other end of the second resistance, the other end of described first armature winding and described second armature winding is electrically connected Connect;
Described first secondary windings electrically connects with described first rectification filtering unit, and described second subprime winding is second whole with described Stream filter unit electrical connection.
In this programme, the first outfan of multivibrator and the second outfan are used to export square-wave pulse, and first The square-wave pulse of outfan output and the square-wave pulse opposite in phase of the second outfan output.The square-wave pulse of two-way opposite in phase After power amplification of overdriving, input the armature winding to transformator, then transmit to secondary windings through the isolation of transformator, Rear respectively by the first rectification filtering unit and the second rectification filtering unit output two-way DC source.Wherein, the two-way of output DC source is all also electrically isolated from each other with between direct-current input power supplying electrical isolation, and the two-way DC source of output.
It is preferred that described first rectification filtering unit includes one first diode and one first electric capacity, described second rectification Filter unit includes one second diode and one second electric capacity;
One end of described first secondary windings electrically connects with the anode of described first diode, and the other end is electric with described first respectively One end held and second is with reference to ground electrical connection, and the negative electrode of described first diode electrically connects with the other end of described first electric capacity;
One end of described second subprime winding electrically connects with the anode of described second diode, and the other end is electric with described second respectively One end held and the 3rd is with reference to ground electrical connection, and the negative electrode of described second diode electrically connects with the other end of described second electric capacity.
It is preferred that described first switching tube, described second switch pipe, described 3rd switching tube and described 4th switching tube It is NMOS tube.
It is preferred that the coil turn of described first secondary windings and/or described second subprime winding is adjustable.In this programme, It is capable of the amplitude adjusted to out-put supply by regulating the coil turn of the first secondary windings and/or second subprime winding.
It is preferred that described multivibrator is HCF4047.In this programme, multivibrator uses ST Microelectronics The HCF4047 chip produced.
The most progressive effect of the present invention is: compared with prior art, the output circuit of the present invention is based on multi-harmonic-oscillations The two-way square-wave pulse of device output and by driving power amplification, the isolation of transformator and the rectifying and wave-filtering of rectification filtering unit Afterwards, it is possible to output and the two-way DC source of direct-current input power supplying electrical isolation, simple in construction, it is widely used.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the output circuit of the two-way switch power supply of the embodiment of the present invention.
Detailed description of the invention
Name preferred embodiment, and combine accompanying drawing and become apparent from intactly illustrating the present invention.
The present embodiment provides the output circuit of a kind of two-way switch power supply, as it is shown in figure 1, include multivibrator HCF4047, resistance R1, resistance R2, switching tube Q1, switching tube Q2, switching tube Q3, switching tube Q4, transformator T1, transformator T2, Direct-current input power supplying Vin, diode D1, diode D2, electric capacity C1 and electric capacity C2, wherein, transformator T1 includes that first is primary Winding and the first secondary windings, transformator T2 includes the second armature winding and second subprime winding.
In the present embodiment, switching tube Q1, switching tube Q2, switching tube Q3 and switching tube Q4 are NMOS tube.
The grid of the first outfan OUT1 and the switching tube Q1 of multivibrator HCF4047 electrically connects, the second outfan OUT2 electrically connects with the grid of switching tube Q2, and the drain electrode of switching tube Q1 is electric with the grid of one end of resistance R1 and switching tube Q3 respectively Connecting, the drain electrode of switching tube Q2 electrically connects with one end of resistance R2 and the grid of institute switching tube Q4 respectively, the drain electrode of switching tube Q3 Electrically connecting with one end of described first armature winding, the drain electrode of switching tube Q4 electrically connects with one end of described second armature winding, The source electrode of switching tube Q1, switching tube Q2, switching tube Q3 and switching tube Q4 all electrically connects with reference to ground GND1.
The input IN1 of direct-current input power supplying Vin and multivibrator HCF4047 electrically connects, for multivibrator HCF4047 powers, and respectively with the other end of resistance R1, the other end of resistance R2, described first armature winding the other end with And the other end electrical connection of described second armature winding.In the present embodiment, direct-current input power supplying Vin is 5V.
Diode D1 and electric capacity C1 constitutes the first rectification filtering unit, one end of described first secondary windings and diode D1 Anode electrical connection, the other end electrically connects with one end of electric capacity C1 with reference to ground GNDA respectively, the negative electrode of diode D1 and electric capacity The other end electrical connection of C1.
Diode D2 and electric capacity C2 constitutes the second rectification filtering unit, one end of described second subprime winding and diode D2 Anode electrical connection, the other end electrically connects with one end of electric capacity C2 with reference to ground GNDB respectively, the negative electrode of diode D2 and electric capacity The other end electrical connection of C2.
The operation principle of the output circuit of the present embodiment two-way switch power supply is specifically introduced below in conjunction with Fig. 1.
The square-wave pulse of multivibrator HCF4047 output opposite in phase, when the square wave arteries and veins of the first outfan OUT1 output When punching is for high level, the square-wave pulse of the second outfan OUT2 output is low level, switching tube Q1 conducting, switching tube Q2 cut-off, The drain electrode of switching tube Q1 becomes low level from high level, and the drain electrode of switching tube Q2 keeps high level, and now switching tube Q3 ends, opens Closing pipe Q4 conducting, one end of first armature winding of the transformator T1 electrically connected with switching tube Q3 drain electrode is high level, for the first time Level winding exports DC source VoutA after the filter rectification of diode D1 and electric capacity C1, electrically connects with switching tube Q4 drain electrode One end of the second armature winding of transformator T2 be pulled to low level, second subprime winding is through diode D2's and electric capacity C2 DC source VoutB is exported after filter rectification.
When the square-wave pulse of the first outfan OUT1 output is low level, the square-wave pulse of the second outfan OUT2 output For high level, switching tube Q2 conducting, switching tube Q1 cut-off, the drain electrode of switching tube Q2 becomes low level, switching tube Q1 from high level Drain electrode keep high level, now switching tube Q4 cut-off, switching tube Q3 conducting, drain the transformator T2 that electrically connects with switching tube Q4 One end of the second armature winding be high level, second subprime winding exports after the filter rectification of diode D2 and electric capacity C2 DC source VoutB, one end of first armature winding of the transformator T1 electrically connected with switching tube Q3 drain electrode is pulled to low level, First secondary windings exports DC source VoutA after the filter rectification of diode D1 and electric capacity C1.
In the present embodiment, DC source VoutA and DC source VoutB all with direct-current input power supplying Vin electrical isolation, its In, also electrical isolation between DC source VoutA and DC source VoutB.Furthermore it is possible to by regulating the first secondary windings Coil turn regulates the amplitude of DC source VoutA, can be regulated directly by the coil turn of regulation second subprime winding The amplitude of stream power supply VoutB.
In the present embodiment, based on multivibrator output two-way square-wave pulse and by drive power amplification, transformation After the isolation of device and the rectifying and wave-filtering of rectification filtering unit, it is possible to output and the two-way direct current of direct-current input power supplying electrical isolation Power supply VoutA and VoutB, simple in construction, it is widely used.
Although the foregoing describing the detailed description of the invention of the present invention, it will be appreciated by those of skill in the art that these Being merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back On the premise of the principle and essence of the present invention, these embodiments can be made various changes or modifications, but these change Protection scope of the present invention is each fallen within amendment.

Claims (5)

1. the output circuit of a two-way switch power supply, it is characterised in that include a multivibrator, one first resistance, one Two resistance, one first switching tube, a second switch pipe, one the 3rd switching tube, one the 4th switching tube, one first transformator, one Two transformators, a direct-current input power supplying, one first rectification filtering unit and one second rectification filtering unit, described first transformation Device includes one first armature winding and one first secondary windings, and described second transformator includes one second armature winding and one second Secondary windings;
First outfan of described multivibrator electrically connects with the grid of described first switching tube, the second outfan and described the The grid electrical connection of two switching tubes, the drain electrode of described first switching tube one end and the described 3rd with described first resistance respectively is opened Close pipe grid electrical connection, the drain electrode of described second switch pipe respectively with one end of described second resistance and described 4th switching tube Grid electrical connection, the drain electrode of described 3rd switching tube electrically connects with one end of described first armature winding, described 4th switch The drain electrode of pipe electrically connects with one end of described second armature winding, described first switching tube, described second switch pipe, the described 3rd The source electrode of switching tube and described 4th switching tube all with first with reference to electrically connect;
Described direct-current input power supplying for powering to described multivibrator, and respectively with the other end, the institute of described first resistance The other end stating the other end of the second resistance, the other end of described first armature winding and described second armature winding is electrically connected Connect;
Described first secondary windings electrically connects with described first rectification filtering unit, and described second subprime winding is second whole with described Stream filter unit electrical connection.
2. the output circuit of two-way switch power supply as claimed in claim 1, it is characterised in that described first rectification filtering unit Including one first diode and one first electric capacity, described second rectification filtering unit includes one second diode and one second electricity Hold;
One end of described first secondary windings electrically connects with the anode of described first diode, and the other end is electric with described first respectively One end held and second is with reference to ground electrical connection, and the negative electrode of described first diode electrically connects with the other end of described first electric capacity;
One end of described second subprime winding electrically connects with the anode of described second diode, and the other end is electric with described second respectively One end held and the 3rd is with reference to ground electrical connection, and the negative electrode of described second diode electrically connects with the other end of described second electric capacity.
3. the output circuit of two-way switch power supply as claimed in claim 1, it is characterised in that described first switching tube, described Second switch pipe, described 3rd switching tube and described 4th switching tube are NMOS tube.
4. the output circuit of two-way switch power supply as claimed in claim 1, it is characterised in that described first secondary windings and/ Or the coil turn of described second subprime winding is adjustable.
5. the output circuit of two-way switch power supply as claimed in claim 1, it is characterised in that described multivibrator is HCF4047。
CN201610424413.1A 2016-06-16 2016-06-16 Output circuit of two-way switch power supply Pending CN106059309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610424413.1A CN106059309A (en) 2016-06-16 2016-06-16 Output circuit of two-way switch power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610424413.1A CN106059309A (en) 2016-06-16 2016-06-16 Output circuit of two-way switch power supply

Publications (1)

Publication Number Publication Date
CN106059309A true CN106059309A (en) 2016-10-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610424413.1A Pending CN106059309A (en) 2016-06-16 2016-06-16 Output circuit of two-way switch power supply

Country Status (1)

Country Link
CN (1) CN106059309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108173432A (en) * 2017-12-29 2018-06-15 珠海格力智能装备技术研究院有限公司 Switching power circuit and industrial gateway system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108173432A (en) * 2017-12-29 2018-06-15 珠海格力智能装备技术研究院有限公司 Switching power circuit and industrial gateway system

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20161026

WD01 Invention patent application deemed withdrawn after publication