CN107612322A - A kind of magnetic integrates high step-up ratio Switching Power Supply - Google Patents
A kind of magnetic integrates high step-up ratio Switching Power Supply Download PDFInfo
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- CN107612322A CN107612322A CN201711002220.8A CN201711002220A CN107612322A CN 107612322 A CN107612322 A CN 107612322A CN 201711002220 A CN201711002220 A CN 201711002220A CN 107612322 A CN107612322 A CN 107612322A
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- branch road
- ripple
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Abstract
The invention provides a kind of magnetic that low input current ripple and high step-up ratio can be achieved to integrate high step-up ratio Switching Power Supply, including the magnetic integration module being made up of input filter branch road, coupling output branch road and ripple counteracting branch road；The input filter branch road includes input inductance LA；The coupling output branch road includes outputting inductance LBWith output diode D3；The ripple that the ripple offsets branch road and includes being cascaded offsets inductance LCWith storage capacitor C3；Input inductance LA, outputting inductance LBAnd ripple offsets inductance LCCoupled in same magnetic core.Input filter branch road that magnetic integration module includes, coupling output branch road and current ripples offset branch road, coupled in same magnetic core to realize the integrated purpose of magnetic.The present invention can realize the characteristics of input current ripple is offset and lifts power input/output voltage step-up ratio.The present invention magnetic integrated switch power have it is simple in construction, design flexible adjustment, there is stronger practicality.
Description
Technical field
The present invention relates to Switching Power Supply, more particularly to a kind of magnetic to integrate high step-up ratio Switching Power Supply.
Background technology
For its structure of conventional boost type Switching Power Supply as shown in figure 1, Vin is input voltage, Vout is output voltage, and L is defeated
Enter inductance, D is fly-wheel diode.
In traditional step-up switching power supply design, to ensure that input current ripple is smaller, larger input need to be selected
Filter inductance value L.Increase inductance value means to increase the volume and weight of power supply simultaneously.Moreover, conventional boost type switchs
The limit step-up ratio that equivalent series resistance present in inductance L suppresses converter is inputted in power supply, when converter is operated in friendship greatly
Under dutycycle operating mode, converter output voltage can not increase therewith.
The content of the invention
In order to solve the problems of the prior art, the invention provides one kind to realize low input current ripple and high step-up ratio
Magnetic integrate high step-up ratio Switching Power Supply, wherein magnetic integration module includes input filter branch road, coupling output branch road and electric current line
Ripple offsets branch road, and three branch roads are coupled in same magnetic core to realize the integrated purpose of magnetic.
The present invention realizes especially by following technical scheme：
A kind of magnetic integrates high step-up ratio Switching Power Supply, including input filter branch road, coupling output branch road, ripple offset branch
Road；The input filter branch road includes input inductance LA；The coupling output branch road includes outputting inductance LBAnd output diode
D3；The ripple that the ripple offsets branch road and includes being cascaded offsets inductance LCWith storage capacitor C3；Input inductance LA, output
Inductance LBAnd ripple offsets inductance LCCoupled to same magnetic core；Input inductance LATermination input power of the same name, LADifferent name termination
Ripple offsets sense LCDifferent name end；Ripple offsets inductance LCSame Name of Ends pass through storage capacitor C3Ground connection；The output diode D3
Positive pole meet outputting inductance LBDifferent name end, D3Negative pole connect the output of the Switching Power Supply.
A progressive ground, the switching power circuit also include switch S, output capacitance Co, output loading Ro, storage capacitor
C1、C2And diode D1、D2；A termination input inductance L of the switch SADifferent name end, the other end ground connection；The output electricity
Appearance Co is in parallel with the output loading Ro, a Co termination output diode D3Negative pole, Co the other end ground connection；Diode D1
Positive pole meet LCDifferent name end, D1Negative pole meet C1One end, C1The other end ground connection.Diode D2Positive pole meet D1Negative pole,
D2Negative pole meet LBSame Name of Ends, C2One termination LADifferent name end, C2Another termination LBSame Name of Ends.
Further, the ripple is offset in branch road, by controlling LCSize and the coefficient of coup, to realize input current
Ripple is offset.
Further, in the coupling output branch road, by controlling LBSize and the coefficient of coup, to realize converter height
Step-up ratio.
Further, by changing LBSize and the coefficient of coup, come effectively adjust Switching Power Supply boosting when input electricity
Flow liner ripple.
The beneficial effects of the invention are as follows：The integrated high boosting of low input current ripple and the magnetic of high step-up ratio that the present invention realizes
Than Switching Power Supply, the input filter inductance of conventional boost type circuit and output inductor are coupled in same magnetic core and introduced
Current ripples offset branch road, it is possible to achieve and input current ripple is offset, and the characteristics of lifting power boost ratio.Meanwhile the magnetic
Integrated switch power have it is simple in construction, design flexible adjustment, there is stronger practicality.
Brief description of the drawings
Fig. 1 is existing conventional boost type circuit diagram；
Fig. 2 is that the magnetic of the present invention integrates the circuit theory diagrams of high step-up ratio Switching Power Supply.
Embodiment
The magnetic integrated switch power of low input current ripple and high step-up ratio can be used for new energy, computer, fuel cell,
In the low-voltage, high-current distributed power supply system such as electric automobile, the electromagnetic interference caused by high current ripple can be effectively improved and asked
Topic.The low current ripple switch power supply can ensure whole system high step-up ratio on the basis of input filter link is simplified simultaneously
Can, tool is of great significance.
The invention discloses a kind of magnetic integrated switch power such as Fig. 2 institutes for realizing low input current ripple and high step-up ratio
Show, wherein magnetic integration module includes input filter branch road, coupling output branch road and current ripples counteracting branch road, three branch roads couplings
To in same magnetic core to realize the integrated purpose of magnetic.
Input filter branch road includes input inductance LA.The ripple that ripple offsets branch road and includes being cascaded offsets inductance LC
With storage capacitor C3.Coupling output circuit includes diode D3With outputting inductance LB.Input inductance LA, outputting inductance LBAnd ripple supports
Electric eliminating sense LCIt is coupled in common to same magnetic core.Input inductance LATermination input power of the same name, LADifferent name termination ripple offset sense
LCDifferent name end and outputting inductance LBSame Name of Ends；Ripple offsets inductance LCSame Name of Ends pass through storage capacitor C3Ground connection；It is described defeated
Go out diode D3Positive pole meet outputting inductance LBDifferent name end, D3Negative pole connect the output of the Switching Power Supply.
The switching power circuit also includes switch S, output capacitance Co, output loading Ro, storage capacitor C1、C2And two
Pole pipe D1、D2；Wherein, a termination input inductance L of the switch SADifferent name end, the other end ground connection；The output capacitance Co with
The output loading Ro is in parallel, a Co termination output diode D3Negative pole, Co the other end ground connection；Diode D1Positive pole
Meet LCDifferent name end, D1Negative pole meet C1One end, C1The other end ground connection.Diode D2Positive pole meet D1Negative pole, D2It is negative
Pole meets LBSame Name of Ends, C2One termination LADifferent name end, C2Another termination LBSame Name of Ends.
The ripple is offset in branch road, by controlling ripple to offset inductance LCSize and the coefficient of coup, it is possible to achieve it is defeated
Enter current ripples counteracting.In the coupling output branch road, by controlling outputting inductance LBSize and the coefficient of coup, it is possible to achieve
Adjust converter boost than target.
Inductance L is offset by changing rippleCSize and the coefficient of coup and storage capacitor C3Value, can effectively adjust
Switching Power Supply input current ripple scope, therefore the present invention has more flexibility than traditional mode.
The present invention is to realize the magnetic integrated switch power of low input current ripple and high step-up ratio, in conventional boost type circuit
It is middle to introduce coupling output branch road and ripple counteracting branch road, and coordinate the less output diode D of volume and weight3And energy storage electricity
Hold C3, it is ensured that converter not only has relatively low input current ripple, while has very high step-up ratio.The low input current
The magnetic integrated switch power of ripple and high step-up ratio is simple in construction, designs flexible adjustment, has stronger practicality.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
The specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of not departing from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (5)
1. a kind of magnetic integrates high step-up ratio Switching Power Supply, it is characterised in that：The magnetic integrated switch power includes input filter branch
Road, coupling output branch road, ripple offset branch road；The input filter branch road includes input inductance LA；The coupling output branch road
Including outputting inductance LBWith output diode D3；The ripple that the ripple offsets branch road and includes being cascaded offsets inductance LCWith
Storage capacitor C3；Input inductance LA, outputting inductance LBAnd ripple offsets inductance LCCoupled in same magnetic core；Input inductance LAIt is same
Name termination input power, LADifferent name termination ripple offset sense LCDifferent name end and outputting inductance LBSame Name of Ends；Ripple offsets electricity
Feel LCSame Name of Ends pass through storage capacitor C3Ground connection；The output diode D3Positive pole meet outputting inductance LBDifferent name end, D3's
Negative pole connects the output of the Switching Power Supply.
2. Switching Power Supply according to claim 1, the switching power circuit also includes switch S, output capacitance Co, output
Load Ro, storage capacitor C1、C2And diode D1、D2；A termination input inductance L of the switch SADifferent name end, the other end
Ground connection；The output capacitance Co is in parallel with the output loading Ro, a Co termination output diode D3Negative pole, Co's is another
End ground connection；Diode D1Positive pole meet LCDifferent name end, D1Negative pole meet C1One end, C1The other end ground connection.Diode D2's
Positive pole meets D1Negative pole, D2Negative pole meet LBSame Name of Ends, C2One termination LADifferent name end, C2Another termination LBIt is of the same name
End.
3. Switching Power Supply according to claim 1 or 2, it is characterised in that：The ripple is offset in branch road, by controlling LC
Size and the coefficient of coup, with realize input current ripple offset.
4. Switching Power Supply according to claim 1 or 2, it is characterised in that：In the coupling output branch road, by controlling LB
Size and the coefficient of coup, to realize converter high step-up ratio.
5. Switching Power Supply according to claim 1 or 2, it is characterised in that：By changing LBSize and the coefficient of coup, come
Effectively adjust Switching Power Supply boosting when input current ripple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711002220.8A CN107612322A (en) | 2017-10-24 | 2017-10-24 | A kind of magnetic integrates high step-up ratio Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711002220.8A CN107612322A (en) | 2017-10-24 | 2017-10-24 | A kind of magnetic integrates high step-up ratio Switching Power Supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107612322A true CN107612322A (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711002220.8A Pending CN107612322A (en) | 2017-10-24 | 2017-10-24 | A kind of magnetic integrates high step-up ratio Switching Power Supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146954A (en) * | 2019-10-29 | 2020-05-12 | 台达电子企业管理（上海）有限公司 | DC/DC converter |
| CN111786555A (en) * | 2020-07-22 | 2020-10-16 | 福州大学 | Zero-ripple high-gain DC-DC converter based on novel boosting unit |
Citations (7)
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|---|---|---|---|---|
| DE4437560A1 (en) * | 1994-10-20 | 1996-05-02 | Datron Electronic Gmbh | Circuit for compensating AC voltage ripple in DC voltage supply |
| JP2006287577A (en) * | 2005-03-31 | 2006-10-19 | Tdk Corp | Noise suppressing circuit |
| US20070263335A1 (en) * | 2006-05-09 | 2007-11-15 | Mte Corporation | Single-phase filter for reducing harmonics |
| CN103532361A (en) * | 2013-09-30 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Magnetic integrated switching power supply |
| CN203491895U (en) * | 2013-09-27 | 2014-03-19 | 王琳 | High voltage step-up ratio double-switch direct current converter |
| CN106602850A (en) * | 2015-10-16 | 2017-04-26 | 得能创科有限公司 | Self-coupled power ripple suppression circuit and method |
| CN106992675A (en) * | 2017-05-09 | 2017-07-28 | 辽宁工程技术大学 | A kind of switched inductors capacitance group and unit supercharging high voltage gain DC converter |
-
2017
- 2017-10-24 CN CN201711002220.8A patent/CN107612322A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4437560A1 (en) * | 1994-10-20 | 1996-05-02 | Datron Electronic Gmbh | Circuit for compensating AC voltage ripple in DC voltage supply |
| JP2006287577A (en) * | 2005-03-31 | 2006-10-19 | Tdk Corp | Noise suppressing circuit |
| US20070263335A1 (en) * | 2006-05-09 | 2007-11-15 | Mte Corporation | Single-phase filter for reducing harmonics |
| CN203491895U (en) * | 2013-09-27 | 2014-03-19 | 王琳 | High voltage step-up ratio double-switch direct current converter |
| CN103532361A (en) * | 2013-09-30 | 2014-01-22 | 哈尔滨工业大学深圳研究生院 | Magnetic integrated switching power supply |
| CN106602850A (en) * | 2015-10-16 | 2017-04-26 | 得能创科有限公司 | Self-coupled power ripple suppression circuit and method |
| CN106992675A (en) * | 2017-05-09 | 2017-07-28 | 辽宁工程技术大学 | A kind of switched inductors capacitance group and unit supercharging high voltage gain DC converter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146954A (en) * | 2019-10-29 | 2020-05-12 | 台达电子企业管理（上海）有限公司 | DC/DC converter |
| CN111786555A (en) * | 2020-07-22 | 2020-10-16 | 福州大学 | Zero-ripple high-gain DC-DC converter based on novel boosting unit |
| CN111786555B (en) * | 2020-07-22 | 2021-11-02 | 福州大学 | Zero-ripple high-gain DC-DC converter based on novel boosting unit |
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