CN201146464Y - Power supply conversing device - Google Patents
Power supply conversing device Download PDFInfo
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- CN201146464Y CN201146464Y CNU2007203106677U CN200720310667U CN201146464Y CN 201146464 Y CN201146464 Y CN 201146464Y CN U2007203106677 U CNU2007203106677 U CN U2007203106677U CN 200720310667 U CN200720310667 U CN 200720310667U CN 201146464 Y CN201146464 Y CN 201146464Y
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- power
- power supply
- module
- power conversion
- conversion
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Abstract
The utility model discloses a power supply converter, which comprises an isolation module used for isolating and converting an input power, and a power supply converting module used for converting the isolated and converted power supply into an output power. The utility model also discloses another power supply converter, which comprises a first power supply converting module used for converting the input power, an isolation module used for isolating and converting the converted input power and a second power supply converting module used for converting the isolated and converted power supply into an output power. The converted input power can be isolated and converted by an inductance-capacitance LC filter circuit; and the converted input power can also be isolated and converted by a capacitance-inductance-capacitance CLC filter circuit. The power supply converter has the advantages that interference among various power supply converting modules is avoided, the fluctuation of power output voltage is reduced and the stability of the power supply is improved.
Description
Technical field
The utility model relates to electronic technology field, relates in particular to a kind of electric power conversion apparatus.
Background technology
When electronic system design, the power supply that the outside provides usually can not satisfy the requirement of system power supply, and for example outside supply voltage that provides is 5V, and the needed supply voltage of system works is 3.3V.Just need to use specific power conversion method this moment, existing power source conversion become can satisfy the power supply of instructions for use.The electronic circuit that wherein can finish the power conversion function is commonly referred to as the power conversion module.
The DC-DC power supply is a kind of power conversion module, and it can be transformed to DC input voitage the VD that design needs.The DC-DC power supply comprises a DC-DC controller, two electronic switches, outputting inductance/electric capacity and feedback loops up and down, concrete structure as shown in Figure 1, opening of DC-DC controller cycle closed switch up and down at work, produce the power supply square wave of one-period, by inductance/capacitance this square wave is carried out shaping filter then, obtain DC power supply output stably; The DC-DC controller is adjusted the switching time of switch up and down in view of the above by the voltage of feedback loop monitoring output simultaneously, thereby realizes the stable of output supply voltage.The DC-DC power supply directly is transferred to output with the power of input voltage by electronic switch and inductance, has only the micropower loss of switch and inductance therebetween, therefore the DC-DC power supply generally can be realized up to the power conversion efficient more than 90% (power of conversion efficiency=output voltage/input voltage power), has obtained using widely in electronic system.
The present power supply that often needs multiple voltage to have nothing in common with each other as work systems such as communication equipments, a DC power supply normally is provided from the outside in design, use a plurality of power conversion modules then, conversion obtains the multichannel different electrical power voltage output of needs respectively, to power to work system.This provides the power supply of voltage input to be called power bus traditionally to a plurality of power conversion modules.
Be articulated under the same power bus as a plurality of DC-DC power modules, as shown in Figure 2, the electronic switch of oneself is independently opened, closed to each DC-DC power supply separately, when last switch opens, the DC-DC power supply obtains electric current from input voltage, and closes when last switch, during following switch opens, the input voltage place need not provide electric current, and promptly the size of current obtained from input voltage of DC-DC power supply is periodically variable; Because the intrinsic physical characteristic of power circuit, promptly the electric current on the power bus is big more, and it is many more that its voltage will reduce, and the opposite electric current of working as diminishes suddenly, and its voltage then can raise; Therefore the DC-DC power module periodically obtains electric current from power bus, can cause the fluctuation of the voltage cycle of voltage bus.In system shown in Figure 2, power conversion module 1 is periodically obtained electric current from power bus, to cause the voltage on the power bus to produce fluctuation, the fluctuation of voltage will be introduced the input voltage of power conversion module 2～n and disturb on the power bus, thereby causes the output voltage fluctuation of power conversion module 2～n to become big; The feedback loop that is used to monitor output voltage accordingly also becomes unstable.Similarly, each power conversion module all can produce interference to remaining power conversion module, and the result of phase mutual interference makes that each road output voltage fluctuation of DC-DC power-supply system of this use power bus is bigger, the power source performance instability.
Same problem also is present in the system of power supply cascade (output of a power conversion module is offered another power conversion module as input).The generation of power supply cascade structure is because some power conversion module has specific requirement to input voltage, needs another one power conversion module this moment, produces satisfactory power supply output by change in voltage.The structure of power supply cascade as shown in Figure 3, power conversion module 2 periodic switching manipulations among the figure cause the output voltage fluctuation aggravation of power conversion module 1.This situation can cause the feedback loop of power conversion module 1 to become unstable again, make the output voltage fluctuation of power conversion module 1 strengthen, and power conversion module 2 is because the mains fluctuations of its input become big, similar output voltage fluctuation also can occur and strengthen the unsettled phenomenon of feedback loop.Therefore, when there is the phase mutual interference in each DC-DC power conversion module of cascade, also can cause the fluctuation of each road DC-DC electric power output voltage bigger, the power source performance instability.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of electric power conversion apparatus, so that the electric power output voltage fluctuation is less, thereby improves the stability of power supply.
The utility model discloses a kind of electric power conversion apparatus, comprising: isolation module is used for the input power supply is isolated conversion; The power conversion module, being used for the power conversion after the described isolation conversion is out-put supply.
Isolation module can be inductor-capacitor LC filter circuit.
Isolation module also can be electric capacity-inductor-capacitor CLC filter circuit.
The utility model discloses a kind of electric power conversion apparatus, comprising: the first power conversion module is used for the input power supply is carried out conversion; Isolation module is used for the input power supply after the described conversion is isolated conversion; The second source conversion module, being used for the power conversion after the described isolation conversion is out-put supply.
Isolation module can be inductor-capacitor LC filter circuit.
Isolation module also can be electric capacity-inductor-capacitor CLC filter circuit.
The electric power conversion apparatus that the utility model embodiment proposes by in articulating the same power bus system of a plurality of power conversion modules, is placed on isolation module the input of each power conversion module; Or in a plurality of power conversion module cascaded system, isolation module is placed between two power conversion modules.Thereby avoided the interference of each power conversion intermodule, made the electric power output voltage fluctuation diminish, improved the stability of power supply.
Description of drawings
Fig. 1 is the structural representation of DC-DC power supply;
Fig. 2 is for articulating the system configuration schematic diagram of a plurality of power conversion modules under the same power bus;
Fig. 3 is a multi-power module cascaded system structural representation;
Fig. 4 is the structural representation of a kind of power converting system of the adding spacer assembly of the utility model embodiment proposition;
Fig. 5 is the structural representation of the another kind of power converting system of the adding spacer assembly of the utility model embodiment proposition;
Fig. 6 a is the structural representation of a kind of isolation module of the utility model embodiment proposition;
Fig. 6 b is the structural representation of the another kind of isolation module of the utility model embodiment proposition;
Fig. 7 is the structural representation of a kind of electric power conversion apparatus of the utility model embodiment proposition;
Fig. 8 is the structural representation of the another kind of electric power conversion apparatus of the utility model embodiment proposition.
Embodiment
The electric power conversion apparatus that the utility model embodiment proposes is: in articulating the same power bus system of a plurality of power modules, isolation module is placed on the input of power conversion module; Or in a plurality of power module cascaded system, isolation module is placed between two power conversion modules.
The electric power conversion apparatus that adopts the utility model embodiment to propose can be avoided the phase mutual interference of a plurality of power conversion intermodules, thereby improves the stability of power supply.The following examples realize that to adopt DC-DC power conversion module power conversion is that example illustrates.Certainly, the electric power conversion apparatus that the utility model embodiment proposes also can adopt other power conversion module to realize, for example can adopt linear stabilized power supply/interchange to change DC power supply etc.
Below in conjunction with Figure of description embodiment of the present utility model is described.
As shown in Figure 4, on same power bus, articulate in the system of a plurality of DC-DC power modules, add isolation module, thereby can avoid the phase mutual interference between these a plurality of power modules.
Equally, as shown in Figure 5, in a plurality of DC-DC power module cascaded system, add isolation module, also can avoid the phase mutual interference between these a plurality of power modules.
Specify the adding isolation module below, can avoid the reason of phase mutual interference between a plurality of power modules.The utility model embodiment has proposed a kind of easy isolation module embodiment, and shown in Fig. 6 a, this isolation module comprises capacitor C 1, inductance L and capacitor C 2.
Input signal is exported after through an inductance component L;
The signal input part of described inductance component L is by a capacity cell C1 ground connection;
The signal output part of described inductance component L is by another capacity cell C2 ground connection.
Structure shown in Fig. 6 a in the prior art, be often used as CLC (electric capacity-inductor-capacitor) filter, but the application's utility model people finds that in research process this CLC filter can play the buffer action of avoiding phase mutual interference between a plurality of power modules.Inductance L can suppress the sudden change of electric current, thereby can prevent the interference of the switch of DC-DC energy supply periodic to its input power supply; The existence of input end capacitor C1 can further suppress the variation of voltage, the stability that keeps the input power supply is (in isolation module, also can not have capacitor C 1, promptly utilize simple LC filter circuit to realize the purpose of isolating, the structural representation of LC filter circuit is shown in Fig. 6 b); And the effect of output capacitor mainly is to make the power supply after isolating to stablize, thereby guarantees that the next stage DC-DC power module that connects with its cascade can obtain stable input voltage.The CLC circuit has also constituted a low pass filter simultaneously, can suppress the High-frequency Interference between each DC-DC power module.In addition, the cost of this CLC circuit is lower, for the very high communication equipment of overall cost, adopts this CLC circuit to prevent the interference that each power conversion intermodule is mutual, can improve the stability of power supply, thereby can significantly improve the performance of communication equipment integral body.
Need to prove, in the isolation module shown in Fig. 6 a, input signal also can be through two and two to export behind the last inductance element, the signal input part of inductance element also can be by two and with last capacity cell ground connection, and the signal output part of inductance element also can be by two and two with last capacity cell ground connection.Isolation module after above-mentioned change in fact still can be regarded a kind of CLC filter circuit as.
And can adopt other element that is used for storaging current to replace the inductance element of figure, realize guaranteeing the effect of stabilized input voltage; Can adopt other element that is used for storage voltage to replace the capacity cell C1 of figure equally, realize further guaranteeing the effect of stabilized input voltage, also can adopt other element that is used for storage voltage to replace the capacity cell C2 of figure, realize obtaining the effect of regulated output voltage.Isolation module after above-mentioned change in fact still can be regarded a kind of CLC filter circuit as.
Same, if isolation module adopts the LC filter circuit to finish isolation, this LC filter circuit in fact still can be regarded a kind of LC filter circuit as through after the change similar to the above.
The electric power conversion apparatus that the utility model embodiment proposes, the same power bus of design when being articulated in to(for) a plurality of DC-DC power modules is improved, by adding isolation module, avoided the electric power output voltage fluctuation bigger, defectives such as power source performance instability, it is minimum to make that each DC-DC power module has been reduced to for the influence of power bus, can not the phase mutual interference between each DC-DC power module thereby make.Improve the voltage stability of power bus, promoted the output performance of each DC-DC power module.
The electric power conversion apparatus that the utility model embodiment proposes, mode during for a plurality of DC-DC power module cascade is improved, by adding isolation module, avoid the electric power output voltage fluctuation bigger, defectives such as power source performance instability, the influence that makes back level DC-DC power module export for the prime power supply has been reduced to minimum, can not the phase mutual interference between two DC-DC power modules thereby make.Improve the voltage stability of preceding level power supply output, promoted the output performance of each DC-DC power module.
The spacer assembly that the utility model embodiment proposes, its implementation is a lc circuit or a CLC circuit.Lc circuit or CLC circuit all can suppress current break, suppress high-frequency noise, thereby make the DC-DC module behind the isolation module be reduced to minimum for its influence of importing power supply.
Can certainly realize isolation module design by other modes of similar lc circuit or CLC circuit mode, thereby reach the purpose of the performance when promoting a plurality of DC-DC power module collaborative work.
The electric power conversion apparatus that the utility model embodiment proposes also can reach the purpose of the performance when promoting a plurality of power modules (contain linear stabilized power supply/interchange and change DC power supply etc.) collaborative work by adding the method for isolation module.
A kind of electric power conversion apparatus that the utility model provides, as shown in Figure 7, this electric power conversion apparatus comprises:
Isolation module 71: be used for the input power supply is isolated conversion; Power conversion module 72: the power conversion that is used for described isolation module 71 is isolated after changing is an out-put supply.
The another kind of electric power conversion apparatus that the utility model provides, as shown in Figure 8, this electric power conversion apparatus comprises:
The first power conversion module 81: be used for the input power supply is carried out conversion; Isolation module 82: be used for the input power supply after 81 conversion of the first power conversion module is isolated conversion; Second source conversion module 83: being used for the power conversion after isolation module 82 isolation is out-put supply.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (6)
1, a kind of electric power conversion apparatus is characterized in that, comprising:
Isolation module is used for the input power supply is isolated conversion;
The power conversion module, being used for the power conversion after the described isolation conversion is out-put supply.
2, device as claimed in claim 1 is characterized in that, described isolation module is an inductor-capacitor LC filter circuit.
3, device as claimed in claim 1 is characterized in that, described isolation module is electric capacity-inductor-capacitor CLC filter circuit.
4, a kind of electric power conversion apparatus is characterized in that, comprising:
The first power conversion module is used for the input power supply is carried out conversion;
Isolation module is used for the input power supply after the described conversion is isolated conversion;
The second source conversion module, being used for the power conversion after the described isolation conversion is out-put supply.
5, device as claimed in claim 4 is characterized in that, described isolation module is an inductor-capacitor LC filter circuit.
6, device as claimed in claim 4 is characterized in that, described isolation module is electric capacity-inductor-capacitor CLC filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203106677U CN201146464Y (en) | 2007-12-13 | 2007-12-13 | Power supply conversing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203106677U CN201146464Y (en) | 2007-12-13 | 2007-12-13 | Power supply conversing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201146464Y true CN201146464Y (en) | 2008-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203106677U Expired - Fee Related CN201146464Y (en) | 2007-12-13 | 2007-12-13 | Power supply conversing device |
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| CN (1) | CN201146464Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953826A (en) * | 2015-07-23 | 2015-09-30 | 中工科安科技有限公司 | Controller power supply as well as module and chip with same |
| CN107154611A (en) * | 2017-06-23 | 2017-09-12 | 天津七六四通信导航技术有限公司 | Power protecting circuit based on MAX14586 chips |
-
2007
- 2007-12-13 CN CNU2007203106677U patent/CN201146464Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953826A (en) * | 2015-07-23 | 2015-09-30 | 中工科安科技有限公司 | Controller power supply as well as module and chip with same |
| CN107154611A (en) * | 2017-06-23 | 2017-09-12 | 天津七六四通信导航技术有限公司 | Power protecting circuit based on MAX14586 chips |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20131213 |