CN105874697B - Power circuit - Google Patents
Power circuit Download PDFInfo
- Publication number
- CN105874697B CN105874697B CN201480071022.5A CN201480071022A CN105874697B CN 105874697 B CN105874697 B CN 105874697B CN 201480071022 A CN201480071022 A CN 201480071022A CN 105874697 B CN105874697 B CN 105874697B
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- capacitor
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- current
- switch element
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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
-
- 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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
DC-DC converter includes：The input terminal being connect with power supply source, the leading-out terminal, switch element, fly-wheel diode, inductor, input side smoothing capacity device and the outlet side smoothing capacity device that are connected with load.First capacitor connects the point on the point on the return flow path of the load and inductor that are connect comprising fly-wheel diode, with leading-out terminal and the current path between switch element and input terminal.
Description
Technical field
The present invention relates to the power circuits for the noise that can reduce DC-DC converter.
Background technology
There is known include the switch elements such as MOSFET, inductor, fly-wheel diode, input side smoothing capacity device and output
The DC-DC converter (referring to patent document 1 etc.) of side smoothing capacity device.
The equivalent circuit diagram of the major part of DC-DC converter disclosed in patent document 1 is shown in FIG. 12.The DCDC
Converter includes switch element Q, inductor L, sustained diode, input side smoothing capacity device Ci and outlet side smoothing capacity
Device Co.Input terminal 20 is connect with power supply source 22, and leading-out terminal 21 is connect with load 23.When switch element Q is connected, packet
Containing power supply source 22, switch element Q, inductor L and the current path closure for loading 23.As a result, from power supply source 22
It is supplied electric power to load 23.
If switch element Q is switched to disconnection, by accumulation in the electromagnetic energy of inductor L, including inductor L, negative
Streaming current in the return flow path of load 23 and sustained diode.
Patent document 1：Japanese Unexamined Patent Publication 2003-230270 bulletins
In the DC-DC converter shown in Figure 12, when switch element Q is connected, noise current is including power supply source 22
Current path in flow.However, when switch element Q is disconnected, noise current is on the reflux road not comprising power supply source 22
It is flowed in diameter.In the case where the path of noise current does not include power supply source 22, generation noise is become easy.
Invention content
The purpose of the present invention is to provide a kind of power circuits for being difficult to generate noise.
A viewpoint according to the present invention, provides a kind of power circuit, has：
DC-DC converter, the leading-out terminal connected it includes the input terminal being connect with power supply source, with load, switch
Element, fly-wheel diode, inductor, input side smoothing capacity device and outlet side smoothing capacity device；And
First capacitor, by the above-mentioned load being connect comprising above-mentioned fly-wheel diode, with above-mentioned leading-out terminal and on
State the point connection on the point on the return flow path of inductor and the current path between above-mentioned switch element and above-mentioned input terminal.
When switch element disconnects, it is formed in the noise current generated in return flow path and electricity is returned to by the first capacitor
The noise current path of power supply source.By formation back to the noise current path of power supply source, noise can be reduced
It generates.
It is preferred that in the frequency band of switching noise, keep the impedance of the above-mentioned return flow path of impedance ratio of above-mentioned first capacitor small.
By reducing the impedance of the first capacitor, noise current readily flows to the first capacitor.
Or the structure with the second capacitor, which will be than above-mentioned return flow path close to above-mentioned input
The current path of terminals side is connect with the point on above-mentioned return flow path.Pass through the above-mentioned power supply being connect with above-mentioned input terminal
Source, above-mentioned switch element and above-mentioned second capacitor form the ring for not including the above-mentioned load being connect with above-mentioned leading-out terminal
The noise current path of shape.
In general, the cricoid noise current path not comprising load is shorter than the current path comprising load.Pass through contracting
Short noise current path can reduce noise.
When switch element disconnects, it is formed in the noise current generated in return flow path and electricity is returned to by the first capacitor
The noise current path of power supply source.By formation back to the noise current path of power supply source, noise can be reduced
It generates.
Description of the drawings
Fig. 1 is the equivalent circuit diagram of the power circuit of embodiment 1.
Fig. 2 is the equivalent circuit diagram of the flow direction of electric current when indicating the switching elements ON in the power circuit of embodiment 1.
Fig. 3 be the flow direction of electric current when indicating that switch element is switched to disconnection in the power circuit of embodiment 1 etc.
Imitate circuit diagram.
Fig. 4 A and Fig. 4 B are the measurement results for the radiated noise for indicating horizontal polarized wave and vertically polarized wave respectively
Curve graph.
Fig. 5 is the equivalent circuit diagram of the power circuit of embodiment 2.
Fig. 6 is the equivalent circuit diagram of the flow direction of electric current when indicating the switching elements ON in the power circuit of embodiment 2.
Fig. 7 be the flow direction of electric current when indicating that switch element is switched to disconnection in the power circuit of embodiment 2 etc.
Imitate circuit diagram.
Fig. 8 A and Fig. 8 B are the measurement results for the radiated noise for indicating horizontal polarized wave and vertically polarized wave respectively
Curve graph.
Fig. 9 is the equivalent circuit diagram of the power circuit of embodiment 3.
Figure 10 is the equivalent circuit of the flow direction of electric current when indicating the switching elements ON in the power circuit of embodiment 3
Figure.
Figure 11 be the flow direction of electric current when indicating that switch element is switched to disconnection in the power circuit of embodiment 3 etc.
Imitate circuit diagram.
Figure 12 is the equivalent circuit diagram of the power circuit of conventional example.
Specific implementation mode
[embodiment 1]
The equivalent circuit diagram of the power circuit of embodiment 1 is shown in FIG. 1.The power circuit of embodiment 1 includes input terminal
Son 20, leading-out terminal 21, DC-DC converter 25, series resistance element Rs, parallel resistance element Rp and the first capacitor Ca.
DC-DC converter 25 includes that input side smoothing capacity device Ci, switch element Q, sustained diode, inductor L and outlet side are flat
Sliding capacitor Co.
Power supply source 22 is connected on input terminal 20.Power supply source 22 connects via AC cables 26 and industrial power
Connect, the alternating current supplied from industrial power be converted into DC current, and by DC current from input terminal 20 supply to
DC-DC converter 25.Power supply source 22 is such as comprising diode-bridge circuit.On leading-out terminal 21, via DC cables 27
It is connected with load 23.As load 23, such as use LED for illumination.
The anode of input terminal 20 and the anode of leading-out terminal 21 directly link.From the cathode direction output of input terminal 20
The cathode of terminal 21, successively in series inserted with switch element Q, inductor L and series resistance element Rs.It is inputting
Between the cathode and anode of terminal 20, inserted with input side smoothing capacity device Ci.In the phase of inductor L and series resistance element Rs
It interconnects between contact and the anode of leading-out terminal 21, inserted with outlet side smoothing capacity device Co.What is connect with leading-out terminal 21
In load 23, it is connected in parallel to parallel resistance element Rp.
As an example, input side smoothing capacity device Ci by the electrostatic capacitance that is connected in parallel with each other is 6.8 μ F two
Electrolytic capacitor is constituted.Outlet side smoothing capacity device Co uses the electrolytic capacitor that electrostatic capacitance is 10 μ F.The inductance of inductor L
E.g. 1mH.Parallel resistance element Rp is used to, when loading the state that 23 are removed, outlet side smoothing capacity device Co be made to put rapidly
Electricity.The resistance value of parallel resistance element Rp is, for example, number k Ω.Series resistance element Rs is that amperometric determination is used, and resistance value is for example
It is 5.6 Ω.
The interlinkage of switch element Q and inductor L via sustained diode with by input terminal 20 anode with it is defeated
Go out the intermediate point connection of the current path of the anode connection of terminal 21.When switch element Q is connected, by power supply source 22, bear
It carries the current path that 23, series resistance element Rs, inductor L and switch element Q are constituted to be closed, thus from power supply source 22
It is supplied electric power to load 23.If switch element Q is switched to disconnection, by inductor L, sustained diode, load 23 and
Streaming current in the return flow path that series resistance element Rs is constituted.
Point (hereinafter referred to as " branch point P1 " on return flow path.) via the first capacitor Ca and switch element Q and input
Point connection on current path between the cathode of terminal 20.In Fig. 1, an electrode of the first capacitor Ca and two pole of afterflow
Point connection between the cathode and leading-out terminal 21 of pipe D.For example, can outlet side smoothing capacity be connected to the first capacitor Ca
The tie point of wiring on the lead and printed circuit board of device Co.Another electrode of first capacitor Ca can be connected to defeated
Enter the tie point of the wiring of the lead and printed circuit board of side smoothing capacity device Ci.First capacitor Ca is used and electrolytic capacitor
Device compares the excellent capacitor of high frequency characteristics, such as laminated ceramic capacitor.The electrostatic capacitance of first capacitor Ca is, for example,
1nF.In the frequency band of noise, impedance ratio outlet side smoothing capacity device Co, the input side smoothing capacity device Ci of the first capacitor Ca
Impedance it is small.
The flow direction of electric current when switch element Q is connected is shown in FIG. 2.By the anode from input terminal 20 via load
23, the current path 30 of series resistance element Rs, inductor L and switch element Q and the cathode back to input terminal 20 closes
It closes, to DC current flows.At this point, sustained diode is off-state.
The flow direction of electric current when switch element Q to be switched to disconnection is shown in FIG. 3.Back flow current from inductor L by
It is flowed in the return flow path 35 that sustained diode, load 23 and series resistance element Rs are constituted.By sustained diode from
When disconnection is switched to connection, switching noise is generated.It is not connected have the first capacitor Ca in the case of, noise current with electric power
It is flowed in the separated return flow path 35 of supply source 22.In the case where the path of noise current is separated with power supply source 22,
Easy to produce noise.
If being inserted into the first capacitor Ca, noise current is supplied by the path 36 comprising the first capacitor Ca back to electric power
To source 22.Therefore, it is possible to inhibit the generation of noise.
The path that noise current is flowed is according to impedance and the first capacitor Ca when loading 23 side from branch point P1
Magnitude relationship between the impedance of itself determines.In order to make noise current return to power supply source 22, preferably make an uproar in switch
In the frequency band (about 30MHz~300MHz) of sound, when the impedance ratio of the first capacitor Ca being made to load 23 side from branch point P1
Impedance is small.
With reference to Fig. 4 A and Fig. 4 B, the measurement result of the radiated noise to being given off from power circuit illustrates.Fig. 4 A
And Fig. 4 B indicate the measurement result of the radiated noise of horizontal polarized wave and vertically polarized wave respectively.The cross of Fig. 4 A and Fig. 4 B
Axis indicates frequency with unit " MHz ", and the longitudinal axis indicates noise level with unit " dB μ V/m ".In Fig. 4 A and Fig. 4 B, carefully
Solid line a indicates that the radiated noise from the power circuit for being not inserted into the first capacitor Ca, heavy line b are indicated from inserted with first
The radiated noise of the power circuit of capacitor Ca.
In the measurement of radiated noise, the substrate of power circuit is placed on and measures on platform and is configured to water relative to ground
It is flat, and 3m will be set as from substrate to the horizontal distance for measuring antenna.Change position and the substrate of the short transverse for measuring antenna
Direction of rotation posture, and be determined under the conditions of electromagnetic noise is maximum.The frequency of switch be 50kHz~
100kHz.As shown in Figure 4A and 4B it is found that by being inserted into the first capacitor Ca, the reduction of radiated noise is realized.
For the current potential of the electrode of input side smoothing capacity device Ci and outlet side smoothing capacity device Co, in switch
It changes and is suppressed in frequency band, it is difficult to be changed because of switch.By the way that the first capacitor Ca is connected to input side smoothing capacity device Ci
And the tie point of the wiring on the lead and printed circuit board of outlet side smoothing capacity device Co, based on the first capacitor Ca's
Influence to switch motion is reduced.
[embodiment 2]
The equivalent circuit diagram of the power circuit of embodiment 2 is shown in FIG. 5.Hereinafter, pair with Fig. 1~implementation shown in Fig. 3
The difference of example 1 illustrates, for identical incomplete structure explanation.The power circuit of embodiment 2 is in addition to the first capacitor Ca
In addition, also there is the second capacitor Cb.Second capacitor Cb is by the current path than return flow path 35 close to 20 side of input terminal
On branch point P2 connect with the point on return flow path 35.With by power supply source 22, the second capacitor Cb, inductor L and
Switch element Q forms the mode for the cricoid current path for not including load 23, to select the tie point of the second capacitor Cb.Example
Such as, the second capacitor Cb connects the anode of input side smoothing capacity device Ci with the cathode of outlet side smoothing capacity device Co.Second
Capacitor Cb with the first capacitor Ca it is identical using the excellent compared with electrolytic capacitor in high-frequency region capacitor,
Such as laminated ceramic capacitor etc..It is the impedance ratio outlet side smoothing capacity device Co of the second capacitor Cb, defeated in the frequency band of noise
The impedance for entering side smoothing capacity device Ci is small.
The flow direction of electric current when switch element Q is connected is shown in FIG. 6.The case where with embodiment 1 shown in Fig. 2, is identical,
The current path 30 being made of power supply source 22, load 23, series resistance element Rs, inductor L, switch element Q is closed, directly
Galvanic electricity stream flows in the current path 30.From a part of ingredient of the noise current of the anode direction load 23 of input terminal 20
It is other from 30 branch of the current path of DC current and along the flowing of path 37 by the second capacitor Cb at branch point P2
Ingredient is flowed from 30 branch of current path at branch point P1 and along by the path 38 of the first capacitor Ca.
In the case where being not inserted into the first capacitor Ca and the second capacitor Cb, noise current is identically as DC current
It is flowed in a manner of by current path 30.In general, the length of the current path of load 23 is than the electric current in power circuit
Path length.As an example, in the case where it is illuminating light emitting diode to load 23, the length of 23 current path is loaded
Degree is 200mm~300mm or so.In contrast, the length of the current path in power circuit is 50mm~160mm or so.If
Noise current is flowed with DC current in identical current path 30, then its overall length is 250mm~460mm or so.With this phase
It is right, by the length in the cricoid path 37 constituted the second capacitor Cb, inductor L and switch element Q and by the first capacitor
The length in the path 38 that Ca is constituted is 160mm or less.
Like this, by being inserted into the first capacitor Ca and the second capacitor Cb, the ring of noise current flowing can be shortened
The current path of shape.The ring of the current path flowed by noise current becomes smaller, and can reduce the generation of radiated noise.
The flow direction of electric current when switch element Q to be switched to disconnection is shown in FIG. 7.The feelings of embodiment 1 as shown in figure 3
Condition is identical, and noise current returns to power supply source 22 by the path 36 comprising the first capacitor Ca.Also, noise current
A part flows through the second capacitor Cb.Therefore, it is identical with the situation of embodiment 1, the generation of radiated noise can be reduced.
With reference to Fig. 8 A and Fig. 8 B, the measurement result of the radiated noise given off from the power circuit of embodiment 2 is carried out
Explanation.Fig. 8 A and Fig. 8 B indicate the measurement result of the radiated noise of horizontal polarized wave and vertically polarized wave respectively.Fig. 8 A with
And the horizontal axis of Fig. 8 B indicates frequency with unit " MHz ", the longitudinal axis indicates noise level with unit " dB μ V/m ".In Fig. 8 A and
In Fig. 8 B, fine line c is indicated from the power supply of any one electricity being not inserted into the first capacitor Ca and the second capacitor Cb
The radiated noise on road, heavy line d indicate the spoke from the power circuit inserted with the first capacitor Ca and the second capacitor Cb
Penetrate noise.
The measurement of radiated noise is identical with the determination condition of power circuit of embodiment 1 shown in Fig. 4 A and Fig. 4 B
Under the conditions of carry out.Known to：By being inserted into the first capacitor Ca and the second capacitor Cb, the reduction of radiated noise can be realized.
[embodiment 3]
Fig. 9 shows the equivalent circuit diagram of the power circuit of embodiment 3.Hereinafter, the difference pair with embodiment 2 shown in fig. 5
Point illustrates, for identical incomplete structure explanation.
In example 2, switch element Q is inserted on the current path of the low voltage side of DC-DC converter 25 (Fig. 5)
And inductor L.In embodiment 3, on the current path of the high-voltage side of DC-DC converter 25, inserted with switch element Q
And inductor L.On the return flow path 42 be made of inductor L, load 23, series resistance element Rs and sustained diode
O'clock via between the first capacitor Ca and the anode and switch element Q of input terminal 20 point connect.Specifically, the first electricity
The anode of outlet side smoothing capacity device Co is connect by container Ca with the anode of input terminal 20.Hereinafter, by return flow path 42 with it is defeated
The tie point gone out between the lead of the anode of side smoothing capacity device Co is known as branch point P3.
Branch point P3 is connect via the second capacitor Cb with the cathode of input side smoothing capacity device Ci.First capacitor Ca with
And second capacitor Cb use compared with electrolytic capacitor the excellent capacitor of high frequency characteristics, such as laminated ceramic capacitor.
In the frequency band of noise, impedance ratio outlet side smoothing capacity device Co, the input side of the first capacitor Ca and the second capacitor Cb
The impedance of smoothing capacity device Ci is small.
The flow direction of electric current when Figure 10 shows that switch element Q is connected.DC current is including switch element Q, inductor
L, it is flowed in the current path 40 of 23 and series resistance element Rs of load.Noise current is at branch point P3 from current path 40
Branch simultaneously returns to power supply source 22 along the noise current path 41 comprising the second capacitor Cb.Therefore, noise current
The length in cricoid path becomes shorter than the current path 40 of DC current.Thereby, it is possible to reduce the generation of radiated noise.
The flow direction of electric current when switch element Q to be switched to disconnection is shown in FIG. 11.Back flow current is in return flow path 42
Middle flowing.Noise current by being flowed in the noise current path 43 comprising power supply source 22 and the first capacitor Ca,
To return to power supply source 22.Therefore, embodiment 1 as shown in figure 3 switch element Q is switched to it is identical when disconnection,
The generation of radiated noise can be reduced.Also, noise current returns to power supply source 22 by the second capacitor Cb.Therefore,
Also the effect that the cricoid path of noise current flowing is shortened can be obtained.
According to above example, the present invention is described, but the present invention is not to be restricted to such embodiments.For example,
Can make various changes, improve, combine, this it will be apparent to those skilled in the art that.
Reference sign：20 ... input terminals；21 ... leading-out terminals；22 ... power supply sources；23 ... loads；25…
DC-DC converter；26 ... AC power supplies cables；27 ... DC power supply cables；The electric current road of DC current when 30 ... switching elements ON
Diameter；Return flow path when 35 ... switch elements disconnect；36, the path of 37,38 ... noise currents；40 ... DC current paths；
41 ... noise current paths；Return flow path when 42 ... switch elements disconnect；43 ... noise current paths；The first capacitances of Ca ...
Device；The second capacitors of Cb ...；Ci ... input side smoothing capacity devices；Co ... outlet side smoothing capacity devices；D ... fly-wheel diodes；L…
Inductor；P1, P2, P3 ... branch point；Q ... switch elements；Rs ... series resistance elements；Rp ... parallel resistance elements.
Claims (2)
1. a kind of power circuit, has：
DC-DC converter, the leading-out terminal connected it includes the input terminal being connect with power supply source, with load, switch member
Part, fly-wheel diode, inductor, input side smoothing capacity device and outlet side smoothing capacity device；And
First capacitor, by the load being connect comprising the fly-wheel diode, with the leading-out terminal and the electricity
Point connection on the current path between point and the switch element and the input terminal on the return flow path of sensor,
The power circuit also has the second capacitor, and second capacitor will be than the return flow path close to the input terminal
The current path of sub- side is connect with the point on the return flow path,
The power supply source, the switch element and second capacitor formation being connect with the input terminal are not wrapped
Cricoid noise current path containing the load being connect with the leading-out terminal.
2. power circuit according to claim 1, wherein
In the frequency band of switching noise, the impedance of return flow path described in the impedance ratio of first capacitor is small.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013270659 | 2013-12-27 | ||
| JP2013-270659 | 2013-12-27 | ||
| PCT/JP2014/082368 WO2015098472A1 (en) | 2013-12-27 | 2014-12-08 | Power-supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105874697A CN105874697A (en) | 2016-08-17 |
| CN105874697B true CN105874697B (en) | 2018-08-28 |
Family
ID=53478337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480071022.5A Active CN105874697B (en) | 2013-12-27 | 2014-12-08 | Power circuit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6206506B2 (en) |
| CN (1) | CN105874697B (en) |
| WO (1) | WO2015098472A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6266230B1 (en) * | 1998-06-29 | 2001-07-24 | Matsushita Electric Industrial Co., Ltd. | Multilayer ceramic capacitor |
| CN101145728A (en) * | 2006-09-15 | 2008-03-19 | 力博特公司 | An ARCP soft switch circuit with voltage clamp function |
| CN102739035A (en) * | 2011-04-15 | 2012-10-17 | 英特赛尔美国股份有限公司 | System and method for active electromagnetic interference reduction for switching converter |
| CN102761258A (en) * | 2012-07-25 | 2012-10-31 | 圣邦微电子（北京）股份有限公司 | Boosted circuit and control method thereof |
| CN103138575A (en) * | 2013-03-26 | 2013-06-05 | 西安理工大学 | Clamping type Boost converter with buffer absorption circuit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104787U (en) * | 1989-02-07 | 1990-08-21 | ||
| US4999568A (en) * | 1989-08-14 | 1991-03-12 | Zdzislaw Gulczynski | Switching power supply comprising pair of converters for obtaining constant or sinusoidal input current and fixed or variable output voltage |
| JPH0686538A (en) * | 1992-08-31 | 1994-03-25 | Toshiba Lighting & Technol Corp | Power supply equipment, lighting device for discharge lamp and illuminating apparatus |
| JP2000082630A (en) * | 1998-06-29 | 2000-03-21 | Matsushita Electric Ind Co Ltd | Laminated ceramic capacitor |
| JP4792847B2 (en) * | 2005-07-12 | 2011-10-12 | パナソニック株式会社 | DC-DC converter |
| TW200832875A (en) * | 2007-01-19 | 2008-08-01 | Murata Manufacturing Co | DC-DC converter module |
| JP5194625B2 (en) * | 2007-08-06 | 2013-05-08 | 富士電機株式会社 | Micro power module |
-
2014
- 2014-12-08 WO PCT/JP2014/082368 patent/WO2015098472A1/en active Application Filing
- 2014-12-08 JP JP2015554714A patent/JP6206506B2/en active Active
- 2014-12-08 CN CN201480071022.5A patent/CN105874697B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6266230B1 (en) * | 1998-06-29 | 2001-07-24 | Matsushita Electric Industrial Co., Ltd. | Multilayer ceramic capacitor |
| CN101145728A (en) * | 2006-09-15 | 2008-03-19 | 力博特公司 | An ARCP soft switch circuit with voltage clamp function |
| CN102739035A (en) * | 2011-04-15 | 2012-10-17 | 英特赛尔美国股份有限公司 | System and method for active electromagnetic interference reduction for switching converter |
| CN102761258A (en) * | 2012-07-25 | 2012-10-31 | 圣邦微电子（北京）股份有限公司 | Boosted circuit and control method thereof |
| CN103138575A (en) * | 2013-03-26 | 2013-06-05 | 西安理工大学 | Clamping type Boost converter with buffer absorption circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6206506B2 (en) | 2017-10-04 |
| CN105874697A (en) | 2016-08-17 |
| JPWO2015098472A1 (en) | 2017-03-23 |
| WO2015098472A1 (en) | 2015-07-02 |
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