CN104796004B - DC (direct current)-DC converter - Google Patents
DC (direct current)-DC converter Download PDFInfo
- Publication number
- CN104796004B CN104796004B CN201510229984.5A CN201510229984A CN104796004B CN 104796004 B CN104796004 B CN 104796004B CN 201510229984 A CN201510229984 A CN 201510229984A CN 104796004 B CN104796004 B CN 104796004B
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- China
- Prior art keywords
- inductance
- switching tube
- junction point
- electric capacity
- converter
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
Abstract
The invention discloses a DC (direct current)-DC converter. A switch power source is composed of an input power source, a switch tube, an inductor and a capacitor. The invention provides a simple converter topological structure, the voltage conversion is realized through a full-controlling type switch apparatus, an isolation transformer is unnecessary, the control requirement is low, and voltage outputs with different demands can be satisfied.
Description
Technical field
The present invention relates to a kind of Technics of Power Electronic Conversion device, especially a kind of DC-to-DC converter.
Background technology
Fig. 1 is the circuit diagram of the structure for representing existing DC-to-DC converter.Switching power unit shown in Fig. 1
By way of being referred to as current resonance type switching power unit by the alternating voltage from source power supply carry out rectification it is smooth after
DC voltage be input into as DC input voitage Uin.At the two ends of the DC source Uin of supply DC input voitage Uin,
It is connected in series with the switch element Q11 (the 1st switch element) being made up of the MOSFET and switch element Q12 being made up of MOSFET
(the 2nd switch element).(or can also be between drain-source of the switch element Q11) connection between the drain-source of switch element Q12
There is series resonance capacitor Cv1, and be connected with common by the primary winding Np1 and electric current of resonance reactor Lr1 and transformator T1
The 1st resonant circuit constituted by the capacitor Ci1 that shakes.Resonance reactor Lr1 for example can be replaced with the leakage inductance of transformator T1.In switch
Diode D1 is connected between the drain-source of element Q12, diode D2 is connected between the drain-source of switch element Q11.Diode
D1, D2 can be the parasitic diodes of switch element Q11, Q12.
Additionally, the secondary side in transformator T1 is connected in series with secondary coil Ns11, Ns12 for being wound into respectively anti-phase.
The voltage that secondary coil Ns11, Ns12 are produced is by diode D11, D12 rectification and smooth by output smoothing capacitor Co1
And export as output voltage Vo1.The signal for being provided with Dead Time connects amplitude from control circuit 10 with identical
Alternating is input to the grid of switch element Q11, Q12, and the Dead Time is used to prevent switch element Q11, Q12 to be also turned on.
When switch element Q11, Q12 are alternatively switched on/disconnect, flow through resonance current in switch element Q11, Q12, by diode D11,
D12 releases sinuous resonance current in the secondary side of transformator T1.Output voltage Vo1, via photoelectric coupling (not shown)
The seal of device etc. feeds back to the control circuit 10 of primary side, by opening for control circuit 10 controlling switch element Q11, Q12
Close frequency so that output voltage Vo1 becomes predetermined value.In the current resonance type switching power unit, each switch element Q11,
Because electric current flows through negative direction (flowing through the electric current of diode D2, D1) when Q12 is connected, therefore switching losses are not produced.Also, because
To have carried out resonance action, surge voltage when disconnecting switch element Q11, Q12 will not be also produced.So as to using low pressure
Switch element, be constitute efficient power required for extremely effective mode.
However, in resonant switching power supply device as shown in Figure 1, needing to use isolating transformer, increased cost
And the problem of actual installation area.
Therefore, how to develop a kind of electric pressure converter for improving above-mentioned prior art disappearance, actually at present in the urgent need to
The problem of solution.
The content of the invention
The invention provides a kind of DC-to-DC converter, constitutes switch by input power, switching tube, inductance, electric capacity
Power supply.The DC-to-DC converter includes input power, switching tube S1, S2, S3, inductance L1, L2, L3, electric capacity C1, C2.It is defeated
Enter one end, one end of electric capacity C1 of the positive pole connection inductance L1 of power supply Uin, the negative pole connecting valve pipe S1's of input power Uin
One end, one end of electric capacity C2；The other end of the other end connecting valve pipe S1 of inductance L1, and junction point is designated as junction point A；Electric capacity
The other end of C1 connects one end of inductance L2, and junction point is output cathode；The other end of electric capacity C2 connects one end of inductance L3,
And junction point is output negative pole；One end of the other end connecting valve pipe S2 of inductance L2, the other end connecting valve of switching tube S2
One end of pipe S3, the other end of switching tube S3 connect the other end of inductance L3, the other end of switching tube S2 and the one of switching tube S3
The junction point at end is designated as junction point B, and junction point A is directly connected to junction point B, is input into positive pole and output negative pole two ends output voltage
Uout.Inductance L2, L3 induction reactance value is equal；Inductance L2, L3 are coupling inductance；Switching tube S2, S3 are full-controlled switch device, can be
IGBT or MOSFET.
The DC-to-DC converter topological structure of the present invention is simple, it is not necessary to isolating transformer, and control requires low, can expire
Foot difference required voltage output.
Description of the drawings
Fig. 1：The exemplary topology diagram of DC-to-DC converter of the prior art；
Fig. 2：The topological diagram of the DC-to-DC converter of the present invention.
Specific embodiment
As shown in Figure 2, DC-to-DC converter of the invention includes input power, switching tube S1, S2, S3, inductance L1,
L2, L3, electric capacity C1, C2.One end of the positive pole connection inductance L1 of input power Uin, one end of electric capacity C1, input power Uin's
One end of negative pole connecting valve pipe S1, one end of electric capacity C2；The other end of the other end connecting valve pipe S1 of inductance L1, and connect
Point is designated as junction point A；The other end of electric capacity C1 connects one end of inductance L2, and junction point is output cathode；Electric capacity C2's is another
One end of end connection inductance L3, and junction point is output negative pole；One end of the other end connecting valve pipe S2 of inductance L2, switching tube
One end of the other end connecting valve pipe S3 of S2, the other end of switching tube S3 connect the other end of inductance L3, and switching tube S2's is another
The junction point of one end of one end and switching tube S3 is designated as junction point B, and junction point A is directly connected to junction point B, is input into positive pole and defeated
Go out negative pole two ends output voltage Uout.
Inductance L2, inductance L3 induction reactance value it is equal, optimization is the inductance for intercoupling, it is possible to decrease mutual inductance disturb；
S2, S3 can ensure when turning on that two-part voltage is identical to output voltage up and down in junction point B；Switching tube S2, S3 are complete
Control type switching device, such as IGBT, MOSFET etc., switching tube S1 can be full-controlled switch device, alternatively not control type switch
Device, such as diode, fast recovery diode etc..When switching tube is full-controlled switch device, then by corresponding control circuit and
Drive circuit is driven control, will not be described here.
By Pulse Width Control switching tube S1, S2, S3 turn on and/or turn off, make input power Uin energy to inductance,
The energy-storage travelling wave tubes such as electric capacity carry out energy storage, and output voltage are released energy by on-off circuit, form Switching Power Supply, pass through
Different compound modes obtains different grades of output voltage Uout.
Claims (5)
1. a kind of DC-to-DC converter, it is characterised in that the DC-to-DC converter is by input power, switching tube, electricity
Sense, electric capacity constitute Switching Power Supply, and the DC-to-DC converter includes input power, switching tube S1, S2, S3, inductance L1, L2,
L3, electric capacity C1, C2；One end of the positive pole connection inductance L1 of input power Uin, one end of electric capacity C1, the negative pole of input power Uin
One end of connecting valve pipe S1, one end of electric capacity C2；The other end of the other end connecting valve pipe S1 of inductance L1, and junction point note
For junction point A；The other end of electric capacity C1 connects one end of inductance L2, and junction point is output cathode；The other end of electric capacity C2 connects
One end of inductance L3 is connect, and junction point is output negative pole；One end of the other end connecting valve pipe S2 of inductance L2, switching tube S2's
One end of other end connecting valve pipe S3, the other end of switching tube S3 connect the other end of inductance L3, the other end of switching tube S2
Junction point B is designated as with the junction point of one end of switching tube S3, junction point A is directly connected to junction point B, output cathode and output are negative
Pole two ends output voltage Uout.
2. DC-to-DC converter according to claim 1, inductance L2, L3 induction reactance value are equal.
3. DC-to-DC converter according to claim 2, inductance L2, L3 are coupling inductance.
4. DC-to-DC converter according to claim 1, switching tube S2, S3 are full-controlled switch device.
5. DC-to-DC converter according to claim 4, described switching tube S2, S3 are IGBT or MOSFET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229984.5A CN104796004B (en) | 2015-05-07 | 2015-05-07 | DC (direct current)-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510229984.5A CN104796004B (en) | 2015-05-07 | 2015-05-07 | DC (direct current)-DC converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104796004A CN104796004A (en) | 2015-07-22 |
| CN104796004B true CN104796004B (en) | 2017-04-12 |
Family
ID=53560585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510229984.5A Active CN104796004B (en) | 2015-05-07 | 2015-05-07 | DC (direct current)-DC converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104796004B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452056B (en) * | 2015-08-11 | 2019-12-24 | 徐词 | Direct current converter |
| CN114977809A (en) * | 2020-02-05 | 2022-08-30 | 华为技术有限公司 | Switch power supply |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1835604A1 (en) * | 2006-03-16 | 2007-09-19 | STMicroelectronics S.r.l. | Magnetic core for a coupled multi coil filter inductor |
| CN101090232A (en) * | 2006-06-12 | 2007-12-19 | 台达电子工业股份有限公司 | Power supply conversion device and magnetic structure |
| CN102158096A (en) * | 2011-05-11 | 2011-08-17 | 南京博兰得电子科技有限公司 | Non-isolated resonant converter |
| CN102468779A (en) * | 2010-11-08 | 2012-05-23 | 吕锦山 | Low current ripple power conversion circuit |
| CN203301366U (en) * | 2013-06-17 | 2013-11-20 | 江苏大学 | A novel double-input SEPICDC-DC converter using wind and light complementation |
-
2015
- 2015-05-07 CN CN201510229984.5A patent/CN104796004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1835604A1 (en) * | 2006-03-16 | 2007-09-19 | STMicroelectronics S.r.l. | Magnetic core for a coupled multi coil filter inductor |
| CN101090232A (en) * | 2006-06-12 | 2007-12-19 | 台达电子工业股份有限公司 | Power supply conversion device and magnetic structure |
| CN102468779A (en) * | 2010-11-08 | 2012-05-23 | 吕锦山 | Low current ripple power conversion circuit |
| CN102158096A (en) * | 2011-05-11 | 2011-08-17 | 南京博兰得电子科技有限公司 | Non-isolated resonant converter |
| CN203301366U (en) * | 2013-06-17 | 2013-11-20 | 江苏大学 | A novel double-input SEPICDC-DC converter using wind and light complementation |
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| Publication number | Publication date |
|---|---|
| CN104796004A (en) | 2015-07-22 |
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Effective date of registration: 20190314 Address after: 266000 Qingdao Economic Development Zone, Shandong Province, No. 177 Changjiang West Road Patentee after: Zhongshi Dalantian (Qingdao) Petroleum Technology Co., Ltd. Address before: 224051 middle road of hope Avenue, Yancheng City, Jiangsu Province, No. 1 Patentee before: Yangcheng Institute of Technology |
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