CN107276437A - The circuit of power magnetic device is shared applied to AC DC/DC DC - Google Patents
The circuit of power magnetic device is shared applied to AC DC/DC DC Download PDFInfo
- Publication number
- CN107276437A CN107276437A CN201710686206.8A CN201710686206A CN107276437A CN 107276437 A CN107276437 A CN 107276437A CN 201710686206 A CN201710686206 A CN 201710686206A CN 107276437 A CN107276437 A CN 107276437A
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- bridge rectifier
- diode
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- 239000004065 semiconductor Substances 0.000 claims description 27
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 7
- 238000005457 optimization Methods 0.000 abstract description 4
- 238000004804 winding Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- H02M7/219—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 in a bridge configuration
-
- 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
- H02M3/33561—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 more than one ouput with independent control
-
- 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
- H02M3/33576—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 having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—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 having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
What the present invention was provided includes bridge rectifier BD1 applied to the AC DC/DC DC circuits for sharing power magnetic device, bridge rectifier BD1 the 1st pin is connected with power firestreak, bridge rectifier BD1 the 3rd pin is connected with zero-power line, bridge rectifier BD1 the 2nd pin successively with the 5th electric capacity C5, 3rd resistor R3, first resistor R1, it is connected after the connection of 6th electric capacity C6 one end with transformer T1 the 1st pin, reconnect some electronic components, the AC DC Flyback of this programme, the dual-purpose converters of DC DC Boost can share power magnetic device, device for power switching, rectifying device, export rear class filtering component and most of output component；Either volume, weight, cost, efficiency all has greatly optimization；Also one way in which work can be automatically selected during AC or DC inputs.
Description
Technical field
The present invention relates to the circuit structure of Switching Power Supply, specifically a kind of AC-DC Flyback, DC-DC Boost are dual-purpose
Converter can share power magnetic device, device for power switching, rectifying device, output filtering component and most of output member
The topological structure of the circuit of device.
Background technology
A power magnetic device for doing magnetoelectricity conversion is needed in the converter circuit structure that AC-DC Flyback isolate,
A power magnetic device for doing magnetoelectricity conversion is also needed in the converter circuit of DC-DC Boost non-isolated.Such as need exploitation one
Money AC-DC Flyback, the two of DC-DC Boost common output mouthful use power supply, because of AC-DC Flyback, DC-DC
Boost is two kinds of different topological structures, and the safety and EMC in products application require all to make a big difference, current
Industry application is separated separately through after the processing of respective power conversion, is connected to the port for sharing output together, and can not
Share some power devices in different topology.As a commercial product, this design application is either from cost, body
The drawbacks of considering all to have one very big in terms of product, weight.Cost can not further be reduced, it is impossible to further subtract volume
It is small, weight can not further be mitigated.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of either volume, weight, cost, efficiency
All there is the circuit that AC-DC/DC-DC shares power magnetic device that is applied to of optimization greatly.
To achieve the above object, technical scheme provided by the present invention is：Power magnetic is shared applied to AC-DC/DC-DC
The circuit of device, it includes bridge rectifier, and the 1st pin of bridge rectifier is connected with power firestreak, the 3rd pin and the electricity of bridge rectifier
Source zero line connection, after the 2nd pin of bridge rectifier is connected with the 5th electric capacity, 3rd resistor, first resistor, the 6th electric capacity one end successively
It is connected with the 1st pin of transformer, the E pin of the 4th pin of bridge rectifier successively with the 5th electric capacity other end, the first optocoupler are connected
It is connected afterwards with second resistance one end, the C pin of the first optocoupler are connected with the 5th pin of the first control chip, the first control chip
1st pin is connected with the 3rd resistor other end, the 4th pin of the first control chip respectively with the second resistance other end, the first metal-oxide-semiconductor
S pin are connected, and the G pin of the first metal-oxide-semiconductor are connected with the 3rd pin of the first control chip, the D pin of the first metal-oxide-semiconductor respectively with transformer
The 2nd pin, the 4th diode one end be connected, the 4th diode other end respectively with first resistor, the 6th electric capacity other end phase
Connection, the D pin of the 3rd pin of transformer respectively with the first commutation diode, the second metal-oxide-semiconductor are connected, and the 4th pin of transformer is successively
Exported after being connected with the 3rd diode, the 4th electric capacity one end, the G pin of the second metal-oxide-semiconductor are connected with the 4th control chip, the 4th control
Coremaking piece is connected with the 5th diode one end, the first commutation diode other end successively with the first electric capacity, the second electric capacity, first
Inductance one end is connected；The first inductance other end is exported after being connected with the 5th resistance, the 4th resistance, the 3rd electric capacity one end；5th
The resistance other end is connected with the 5th diode other end, the 6th resistance, integrated regulator respectively；The S pin of second metal-oxide-semiconductor with
The 3rd diode other end connection after successively with the first electric capacity, the second electric capacity, the 6th resistance other end and integrated regulator
Exported after being connected again with the 3rd electric capacity, the 4th electric capacity other end after connection；The 4th resistance other end is connected with optocoupler one end, optocoupler
The other end is connected with integrated regulator.
The dual-purpose converter of AC-DC Flyback, DC-DC Boost of this programme can share power magnetic device, power
Switching device, rectifying device, output rear class filtering component and most of output component；Either volume, weight, cost,
Efficiency all has greatly optimization；Also one way in which work can be automatically selected during AC or DC inputs.So solve tradition such
The problems such as power supply cost, volume, weight, efficiency, greatly improve the competitiveness of product in market.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
Embodiment
With reference to all accompanying drawings, the invention will be further described, and presently preferred embodiments of the present invention is：Referring to accompanying drawing 1,
The circuit for being applied to the shared power magnetic devices of AC-DC/DC-DC described in the present embodiment includes bridge rectifier BD1, and bridge-type is whole
Stream BD1 the 1st pin is connected with power firestreak, and bridge rectifier BD1 the 3rd pin is connected with zero-power line, and the 2nd of bridge rectifier BD1 the
Pin be connected successively with the 5th electric capacity C5,3rd resistor R3, first resistor R1, the 6th electric capacity C6 one end after with transformer T1 the 1st
Pin is connected, bridge rectifier BD1 the 4th pin be connected successively with the 5th electric capacity C5 other ends, the first optocoupler U2A E pin after with
Second resistance R2 one end is connected, and the first optocoupler U2A C pin are connected with the first control chip U1 the 5th pin, the first control chip
U1 the 1st pin is connected with the 3rd resistor R3 other ends, the first control chip U1 the 4th pin respectively with the second resistance R2 other ends,
First metal-oxide-semiconductor Q1 S pin are connected, and the first metal-oxide-semiconductor Q1 G pin are connected with the first control chip U1 the 3rd pin, the first metal-oxide-semiconductor
Q1 D pin the 2nd pin respectively with transformer T1, the 4th diode D4 one end are connected, the 4th diode D4 other ends respectively with
First resistor R1, the 6th electric capacity C6 other ends are connected, transformer T1 the 3rd pin respectively with the first commutation diode D1, second
Metal-oxide-semiconductor Q2 D pin are connected, and transformer T1 the 4th pin is defeated after being connected successively with the 3rd diode D3, the 4th electric capacity C4 one end
Go out, the second metal-oxide-semiconductor Q2 G pin are connected with the 4th control chip U4, the 4th control chip U4 and the 5th diode D5 one end phase
Connection, the first commutation diode D1 other ends are connected with the first electric capacity C1, the second electric capacity C2, first inductance L one end successively；The
The one inductance L other ends are exported after being connected with the 5th resistance R5, the 4th resistance R4, the 3rd electric capacity C3 one end；5th resistance R5 is another
End is connected with the 5th diode D5 other ends, the 6th resistance R6, integrated regulator U3 respectively；Second metal-oxide-semiconductor Q2 S pin with
The 3rd diode D3 other ends connection after successively with the first electric capacity C1, the second electric capacity C2, the 6th resistance R6 other ends and voltage stabilizing
Exported after being connected again with the 3rd electric capacity C3, the 4th electric capacity C4 other ends after integrated circuit U3 connections；The 4th resistance R4 other ends with
Optocoupler U2B one end is connected, and the optocoupler U2B other ends are connected with integrated regulator U3.
When IN AC 220V exchange input AC_L (live wire), AC_N (zero line) are after protective tube F1, through bridge rectifier
(BD1) and after electrochemical capacitor C5 filtering, direct current 300Vdc voltages are become.This voltage gives control chip U1 by resistance R3 all the way
Start power supply；Another road is then connected to one end T1_1 of Transformer Winding（That is the 1st pin of T1, similarly hereinafter）.Opened in control chip U1
After dynamic, U1 will export high level and go to drive metal-oxide-semiconductor Q1_G, during making to turn between conducting between metal-oxide-semiconductor Q1_D-S, Q1_D-S, transformation
Device armature winding T1_1-2 stores energy, because the effect of Same Name of Ends, and the energy of armature winding T1_1-2 storages can not be to secondary
Winding T1_3-4 discharges.Low level is exported in control chip U1, makes metal-oxide-semiconductor Q1_G without driving voltage, between metal-oxide-semiconductor Q1_D-S
During being turned off between shut-off, Q1_D-S, primary winding T1_1-2 releases energy to secondary windings T1_3-4, rectified two pole
Obtained after pipe D1 rectifications, electric capacity C1 C2 C3, the TT filtering of inductance L compositions to OUT DC DC voltage Vout+, DC voltage Vout
+ voltage stabilizing adjusted through resistance R4, optocoupler U2B and TL431 U3, feed back to optocoupler U2A go control PWM chip U1, control it
The size of dutycycle adjusts output voltage Vout+ stabilization.2. when the input of IN DC direct currents is filtered through electric capacity C4, through anti-reverse
After diode D3, when control chip U4 has supply voltage, output high level is gone to drive metal-oxide-semiconductor Q2_G by U4 after starting, and makes MOS
Turned between pipe Q2_D-S, the positive pole Vin+ of the voltage of DC direct currents input is through T1_3-4L1, metal-oxide-semiconductor Q2_D-S, to the input of DC direct currents
Voltage negative pole Vin-, so as to form loop, now, T1_3-4L1 storage energy.When control chip U2 exports low level,
Make metal-oxide-semiconductor Q2_G without driving voltage, turned off between metal-oxide-semiconductor Q2_D-S, during being turned off between Q2_D-S, T1_3-4L1 and metal-oxide-semiconductor
Q2 switches, which will be produced, is higher than DC input voltages, by being released energy after D1D2 rectifications to output, through electric capacity C1 C2 C3, inductance L
Obtain to OUT DC DC voltage Vout+, DC voltage Vout+ partial pressure of the voltage stabilizing through resistance R5, R6 after the TT filtering of composition
The comparison operation inside PWM chip U2 is adjusted, makes it control the size of dutycycle to adjust output voltage Vout+ stabilization.
The dual-purpose converter of AC-DC Flyback, DC-DC Boost of the present embodiment can share power magnetic device, work(
Rate switching device, rectifying device, output rear class filtering component and most of output component；Either volume, weight, into
This, efficiency all has greatly optimization；Also one way in which work can be automatically selected during AC or DC inputs.So i.e. solve tradition this
The problems such as class power supply cost, volume, weight, efficiency, greatly improve the competitiveness of product in market.
Embodiment described above is only the preferred embodiments of the invention, and the practical range of the present invention is not limited with this,
Therefore the change that all shape, principles according to the present invention are made, it all should cover within the scope of the present invention.
Claims (1)
1. the circuit of power magnetic device is shared applied to AC-DC/DC-DC, it is characterised in that：It includes bridge rectifier
（BD1）, bridge rectifier（BD1）The 1st pin be connected with power firestreak, bridge rectifier（BD1）The 3rd pin be connected with zero-power line,
Bridge rectifier（BD1）The 2nd pin successively with the 5th electric capacity（C5）, 3rd resistor（R3）, first resistor（R1）, the 6th electric capacity（C6）
With transformer after the connection of one end（T1）The 1st pin be connected, bridge rectifier（BD1）The 4th pin successively with the 5th electric capacity（C5）Separately
One end, the first optocoupler（U2A）E pin be connected after with second resistance（R2）One end is connected, the first optocoupler（U2A）C pin and
One control chip（U1）The 5th pin be connected, the first control chip（U1）The 1st pin and 3rd resistor（R3）The other end is connected,
First control chip（U1）The 4th pin respectively with second resistance（R2）The other end, the first metal-oxide-semiconductor（Q1）S pin be connected, first
Metal-oxide-semiconductor（Q1）G pin and the first control chip（U1）The 3rd pin connection, the first metal-oxide-semiconductor（Q1）D pin respectively with transformer
（T1）The 2nd pin, the 4th diode（D4）One end is connected, the 4th diode（D4）The other end respectively with first resistor（R1）、
6th electric capacity（C6）The other end is connected, transformer（T1）The 3rd pin respectively with the first commutation diode（D1）, the second metal-oxide-semiconductor
（Q2）D pin be connected, transformer（T1）The 4th pin successively with the 3rd diode（D3）, the 4th electric capacity（C4）After the connection of one end
Output, the second metal-oxide-semiconductor（Q2）G pin and the 4th control chip（U4）It is connected, the 4th control chip（U4）With the 5th diode
（D5）One end is connected, the first commutation diode（D1）The other end successively with the first electric capacity（C1）, the second electric capacity（C2）, first electricity
Sense（L）One end is connected；First inductance（L）The other end and the 5th resistance（R5）, the 4th resistance（R4）, the 3rd electric capacity（C3）One end
Exported after connection；5th resistance（R5）The other end respectively with the 5th diode（D5）The other end, the 6th resistance（R6）, voltage stabilizing it is integrated
Circuit（U3）It is connected；Second metal-oxide-semiconductor（Q2）S pin and the 3rd diode（D3）The other end connection after successively with the first electric capacity
（C1）, the second electric capacity（C2）, the 6th resistance（R6）The other end and integrated regulator（U3）After connection again with the 3rd electric capacity
（C3）, the 4th electric capacity（C4）Exported after other end connection；4th resistance（R4）The other end and optocoupler（U2B）One end is connected, optocoupler
（U2B）The other end and integrated regulator（U3）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686206.8A CN107276437A (en) | 2017-08-11 | 2017-08-11 | The circuit of power magnetic device is shared applied to AC DC/DC DC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686206.8A CN107276437A (en) | 2017-08-11 | 2017-08-11 | The circuit of power magnetic device is shared applied to AC DC/DC DC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107276437A true CN107276437A (en) | 2017-10-20 |
Family
ID=60080068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710686206.8A Pending CN107276437A (en) | 2017-08-11 | 2017-08-11 | The circuit of power magnetic device is shared applied to AC DC/DC DC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107276437A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201839206U (en) * | 2010-07-22 | 2011-05-18 | 王文长 | Improved alternating current and direct current switching power supply circuit structure |
| US20110149613A1 (en) * | 2009-12-23 | 2011-06-23 | Comarco Wireless Technologies, Inc. | Flyback converter utilizing boost inductor between ac source and bridge rectifier |
| CN202679247U (en) * | 2012-05-15 | 2013-01-16 | 青岛海信宽带多媒体技术有限公司 | Switch power supply circuit and set-top box |
| CN104980008A (en) * | 2015-06-30 | 2015-10-14 | 单云峰 | Improved AC and DC universal switching power supply circuit structure |
-
2017
- 2017-08-11 CN CN201710686206.8A patent/CN107276437A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110149613A1 (en) * | 2009-12-23 | 2011-06-23 | Comarco Wireless Technologies, Inc. | Flyback converter utilizing boost inductor between ac source and bridge rectifier |
| CN201839206U (en) * | 2010-07-22 | 2011-05-18 | 王文长 | Improved alternating current and direct current switching power supply circuit structure |
| CN202679247U (en) * | 2012-05-15 | 2013-01-16 | 青岛海信宽带多媒体技术有限公司 | Switch power supply circuit and set-top box |
| CN104980008A (en) * | 2015-06-30 | 2015-10-14 | 单云峰 | Improved AC and DC universal switching power supply circuit structure |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |
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