CN109302077A - A kind of Switching Power Supply of 380V voltage class - Google Patents
A kind of Switching Power Supply of 380V voltage class Download PDFInfo
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- CN109302077A CN109302077A CN201811334672.0A CN201811334672A CN109302077A CN 109302077 A CN109302077 A CN 109302077A CN 201811334672 A CN201811334672 A CN 201811334672A CN 109302077 A CN109302077 A CN 109302077A
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- power supply
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- 239000003990 capacitor Substances 0.000 claims abstract description 44
- 239000004065 semiconductor Substances 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 14
- 230000009466 transformation Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 claims 1
- 230000005669 field effect Effects 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—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 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
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of Switching Power Supplies of 380V voltage class, including including ac rectifier D1, D2, D3, D4,2 concatenated electrolytic capacitor C3, C5, the elements such as the field-effect tube Q1 of high frequency transformer T1, the control chip U1 of integrated EFI and series connection with it, 2 concatenated electrolytic capacitors are filtered into high frequency transformer T1 and provide the pulse power of PWM modulation, then the output voltage stabilization by field-effect tube Q1 and control chip U1 (DK112) control switch power supply.The Switching Power Supply of 380V voltage class of the invention includes hardware protection circuit, while relevant switching circuit is also devised on circuit power consumption, reduces power supply power consumption.
Description
Technical field
The present invention relates to a kind of Switching Power Supply, the Switching Power Supply of specifically a kind of 380V voltage class.
Background technique
With the development of power technology, the Switching Power Supply of 380V grade is more and more widely used, Hen Duoshe
It is standby to be inputted using phase three-wire three, without zero curve, it is necessary to which a kind of Switching Power Supply of 380V grade is powered for it.The performance of the power supply
The performance and price that quality and cost will have a direct impact on.The resistance to pressure request of switching tube should be high voltage bearing in 1200 V or more at this time
Device is often expensive, brings difficulty to the selection of device.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Switching Power Supplies of 380V voltage class, to solve background technique
In the problem of mentioning.
To achieve the above object, the invention provides the following technical scheme:
A kind of Switching Power Supply of 380V voltage class, including chip U1, reactor L1 and transformer EFD20, the transformer
Armature winding one end of EFD20 connects resistance R5, capacitor C6, capacitor C5, resistance R4, the cathode of diode D1 and diode D2's
Cathode, the cathode and reactor L1 of the anode connection diode D4 of diode D1, reactor L1 are also connected with AC power source AC, two poles
The anode connection anode of diode D3 of pipe D4, capacitor C3, resistance R3, capacitor C2, resistance R1, the foot 1 of chip U1, capacitor C1 and
The other end of capacitor C2, resistance R2 connect the cathode of resistance R1, capacitor C2, resistance R18 and diode D6, the anode of diode D6
Connect the grid of metal-oxide-semiconductor Q1, the cathode and resistance R6 of diode Z1, the pin 5 of the drain electrode connection chip U1 of metal-oxide-semiconductor Q1, transformation
The anode of the armature winding other end connection diode D5 of device EFD20 and the source level of metal-oxide-semiconductor Q1, transformer EFD20 it is secondary around
The anode of group one end connection diode D8, the cathode of diode D8 connect capacitor C15 and resistance R2, the secondary of transformer EFD20
The winding other end connects capacitor C15, capacitor C18, the other end of resistance R2 and resistance R22, in the secondary windings of transformer EFD20
Heart tap connects the anode of diode D7, and the cathode of diode D7 connects inductance L2 and resistance R19, the other end connection of inductance L2
The other end and resistance R3 of capacitor C18, the anode of the other end connection optocoupler U2 interior light emitting diodes of resistance R19, optocoupler U2
The cathode of cathode connection the capacitor C17 and three end adjustable reference source U3 of interior light emitting diodes, the sun of three end adjustable reference source U3
Pole connects resistance R20 and ground, and the control electrode of three end adjustable reference source U3 connects resistance R3 and resistance R20, and the inside optocoupler U2 is photosensitive
The collector of the foot 3 of the emitter connection capacitor C2 and chip U1 of triode, the inside optocoupler U2 phototriode connects capacitor C1
With the foot 4 of chip U1.
As a preferred solution of the present invention: the model DK112 of the chip U1.
As a preferred solution of the present invention: the model PC817 of the optocoupler U2.
As a preferred solution of the present invention: the model TL431 of the three ends adjustable reference source U3.
As a preferred solution of the present invention: the voltage range of the AC power source AC is 100-560V.
Compared with prior art, the beneficial effects of the present invention are: the Switching Power Supply of 380V voltage class of the invention uses
Double-tube series mode, solves the selection problem of high voltage 380V input condition lower switch pipe, and circuit is simple, small in size, weight
Gently, high-efficient.
Detailed description of the invention
Fig. 1 is circuit diagram of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, embodiment 1: a kind of Switching Power Supply of 380V voltage class, including ac rectifier, high frequency become
The elements such as the field-effect tube of depressor, the control chip of integrated EFI and series connection with it, double fire wire rectification, three-phase and four-line are whole
Stream, three firewire rectifications can all obtain 560V or so DC voltage, and 2 concatenated electrolytic capacitors of direct current of high pressure are filtered into high frequency
Transformer provides the pulse power of PWM modulation, then the output electricity by field-effect tube and control chip DK112 control switch power supply
Pressure is stablized.
Physical circuit is as shown in Figure 1, main element has chip DK112, reactor L1 and transformer EFD20, transformation in figure
Armature winding one end connection resistance R5, capacitor C6, capacitor C5, resistance R4, the cathode of diode D1 and the diode D2 of device EFD20
Cathode, the cathode and reactor L1 of the anode connection diode D4 of diode D1, reactor L1 is also connected with AC power source AC, two
Anode, capacitor C3, resistance R3, capacitor C2, resistance R1, the foot 1 of chip DK112, electricity of the anode connection diode D3 of pole pipe D4
Hold C1 and capacitor C2, the other end of resistance R2 connects the cathode of resistance R1, capacitor C2, resistance R18 and diode D6, diode D6
The anode connection grid of metal-oxide-semiconductor Q1, diode Z1 cathode and resistance R6, the drain electrode connection chip DK112's of metal-oxide-semiconductor Q1 draws
Foot 5, the anode of the armature winding other end connection diode D5 of transformer EFD20 and the source level of metal-oxide-semiconductor Q1, transformer EFD20
Secondary windings one end connection diode D8 anode, the cathode of diode D8 connects capacitor C15 and resistance R2, transformer
The secondary windings other end of EFD20 connects capacitor C15, capacitor C18, the other end of resistance R2 and resistance R22, transformer EFD20
Secondary center tap connection diode D7 anode, the cathode of diode D7 connects inductance L2 and resistance R19, inductance L2
Other end connection capacitor C18 the other end and resistance R3, the other end connection optocoupler U2 interior light emitting diodes of resistance R19
Anode, the cathode of cathode connection the capacitor C17 and three end adjustable reference source U3 of optocoupler U2 interior light emitting diodes, three end adjustable substrates
The anode connection resistance R20 and ground of quasi- source U3, the control electrode of three end adjustable reference source U3 connect resistance R3 and resistance R20, optocoupler
The foot 3 of the emitter connection capacitor C2 and chip DK112 of phototriode inside U2, the current collection of the inside optocoupler U2 phototriode
The foot 4 of pole connection capacitor C1 and chip DK112.
Chip DK112 is the dedicated small-power switching power-supply control core of series of Dong Ke Semiconductor Co., Ltd of Shenzhen production
Piece, the models such as main model DK106, DK112, DK124.Be widely used in power supply adaptor, LED power, electromagnetic oven, air-conditioning,
The small household electrical appliances such as DVD.Built-in chip type 700V injectron；Built-in self-powered circuit does not need outside and provides to chip
Power supply effectively reduces the quantity and cost of outer member without external plus start-up resistor.Built-in current foldback circuit, anti-mistake
Carry protection circuit, output short circuit protection circuit, temperature protection circuit and optocoupler fail-safe circuit.Built-in slope compensation circuit,
Guarantee the circuit stability in low-voltage and high-power output.Built-in PWM oscillating circuit, and be equipped with and tremble frequency function, it ensure that good
Good EMC characteristic.Internal high-voltage protection, when inlet highway voltage is higher than protection voltage, chip will turn off and be prolonged
Shi Chongqi.
Voltage rating due to including MOSFET is 700V, is only used for single-phase 220VAC input, therefore connect again one
Voltage rating is not less than the power MOSFET (metal-oxide-semiconductor Q1, pressure-resistant 600V) of 600V, and the sum of inside and outside two power MOSFET pressure resistance is super
1300V is crossed, the voltage of 560V or more can be distributed on the two devices, enable the power supply security application in 380V AC
The high pressure occasion of input.560 V after rectifying and wave-filtering or so DC voltage is added in the armature winding one of transformer under normal circumstances
End, another drain electrode for being connected to external MOSFET (metal-oxide-semiconductor Q1) of armature winding.MOSFET inside metal-oxide-semiconductor Q1 and DK112
It is concatenation relationship.When MOSFET inside DK112 is connected, the drain voltage of chip DK112 is drawn to low level, metal-oxide-semiconductor
Q1 conducting.Zener diode Z1 then limits grid-source voltage of metal-oxide-semiconductor Q1, make its not reason over-voltage and it is breakdown.When
When DK112 is turned off, zener diode Z1 decompression, metal-oxide-semiconductor Q1 is simultaneously turned off.
In Fig. 1 schematic diagram output power it is maximum be+5V this all the way, therefore principal voltage feedback using 5V export.Pass through one
A adjustable precision shunt regulator TL431 and an optocoupler provide feedback voltage, and the voltage of optocoupler collector can determine
The peak drain current of DK112, feedback comparison circuit are connected across on the cathode and low reference pin of TL431.C17 is TL43l
Frequency compensation network.R3, R20 are Proportional Feedback resistance so that+5V output is fed back according to a certain percentage.Remaining
Each road output is determined according to the turn ratio of high frequency transformer.It is larger in view of+5V output power, increase rear class LC filtering
Device, to reduce ripple voltage.
Embodiment 2, on the basis of embodiment 1, the model PC817 of the optocoupler U2 of the design, small in size, integrated level
Height, and response speed is sensitive, and the high-speed switch suitable for the design controls.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of Switching Power Supply of 380V voltage class, including chip U1, reactor L1 and transformer EFD20, which is characterized in that
The transformer EFD20 armature winding one end connection resistance R5, capacitor C6, capacitor C5, resistance R4, diode D1 cathode and
The cathode of diode D2, the cathode and reactor L1 of the anode connection diode D4 of diode D1, reactor L1 are also connected with exchange
The anode connection anode of diode D3 of power supply AC, diode D4, capacitor C3, resistance R3, capacitor C2, resistance R1, chip U1
Foot 1, capacitor C1 and capacitor C2, resistance R2 the other end connection resistance R1, capacitor C2, resistance R18 and diode D6 cathode, two
The anode of pole pipe D6 connects the cathode and resistance R6 of the grid of metal-oxide-semiconductor Q1, voltage-stabiliser tube Z1, and the drain electrode of metal-oxide-semiconductor Q1 connects chip U1
Pin 5, transformer EFD20 the armature winding other end connection diode D5 anode and metal-oxide-semiconductor Q1 source level, transformer
The anode of secondary windings one end connection diode D8 of EFD20, the cathode of diode D8 connect capacitor C15 and resistance R2, transformation
Secondary windings other end connection capacitor C15, capacitor C18, the other end of resistance R2 and the resistance R22 of device EFD20, transformer
The anode of the secondary center tap connection diode D7 of EFD20, the cathode of diode D7 connect inductance L2 and resistance R19,
The other end and resistance R3 of the other end connection capacitor C18 of inductance L2, the other end of resistance R19 connect optocoupler U2 internal illumination two
The anode of pole pipe, the cathode of cathode connection the capacitor C17 and three end adjustable reference source U3 of optocoupler U2 interior light emitting diodes, three ends
The control electrode connection resistance R3 and resistance of the anode connection resistance R20 and ground of adjustable reference source U3, three end adjustable reference source U3
The foot 3 of the emitter connection capacitor C2 and chip U1 of phototriode inside R20, optocoupler U2, the inside optocoupler U2 phototriode
Collector connection capacitor C1 and chip U1 foot 4.
2. a kind of Switching Power Supply of 380V voltage class according to claim 1, which is characterized in that the type of the chip U1
Number be DK112.
3. a kind of Switching Power Supply of 380V voltage class according to claim 1, which is characterized in that the type of the optocoupler U2
Number be PC817.
4. a kind of Switching Power Supply of 380V voltage class according to claim 1, which is characterized in that three end adjustable substrate
The model TL431 of quasi- source U3.
5. a kind of Switching Power Supply of 380V voltage class according to claim 1 to 4, which is characterized in that the exchange
The voltage range of power supply AC is 100-560V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334672.0A CN109302077A (en) | 2018-11-10 | 2018-11-10 | A kind of Switching Power Supply of 380V voltage class |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334672.0A CN109302077A (en) | 2018-11-10 | 2018-11-10 | A kind of Switching Power Supply of 380V voltage class |
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| Publication Number | Publication Date |
|---|---|
| CN109302077A true CN109302077A (en) | 2019-02-01 |
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ID=65146821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811334672.0A Withdrawn CN109302077A (en) | 2018-11-10 | 2018-11-10 | A kind of Switching Power Supply of 380V voltage class |
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| Country | Link |
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| CN (1) | CN109302077A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130363A (en) * | 2019-10-17 | 2020-05-08 | 深圳市助尔达电子科技有限公司 | High-integration power converter |
-
2018
- 2018-11-10 CN CN201811334672.0A patent/CN109302077A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111130363A (en) * | 2019-10-17 | 2020-05-08 | 深圳市助尔达电子科技有限公司 | High-integration power converter |
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Application publication date: 20190201 |
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