CN204886690U - EMC power isolation filter module - Google Patents
EMC power isolation filter module Download PDFInfo
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- CN204886690U CN204886690U CN201520657052.6U CN201520657052U CN204886690U CN 204886690 U CN204886690 U CN 204886690U CN 201520657052 U CN201520657052 U CN 201520657052U CN 204886690 U CN204886690 U CN 204886690U
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Abstract
The utility model discloses a EMC power isolation filter module, it includes DCDC power module and filtering cover, the DCDC power module front end sets up 4 common mode inductance and a line - line differential mode electric capacity, 4 after individual common mode inductance connects gradually again with a line - line differential mode capacitance connection, this line - line differential mode electric capacity is connected with DCDC power module again, DCDC power module and 4 common mode inductance and a line - line differential mode electric capacity integration are on same printing board, DCDC power module is used for setting up at a shell, DCDC power module with pass through between the shell the filtering cover is kept apart. Its compact structure, heat dispersion is good, the isolation is effectual, stable height, whole filtering are functional.
Description
Technical field
The utility model relates to a kind of EMC isolated from power filtration module.
Background technology
Current, along with the raising gradually of the military level of country, also more and more miniaturization is required to the volume of all kinds of military equipment.Current most domestic equipment is often taked to add all kinds of filter in system DC/DC module front end to ensure that the test of installation electromagnetical compatibility is passed through smoothly.So just cause device interior space nervous, cause equipment performance can not maximum using.
The novelty items that " development of EMC isolated from power filtration module " arises just in this context.It is by being integrated in the mode in a space by DC/DC power module and filter circuit, greatly reduce volume, meeting under the prerequisite to the DC/DC isolation features of input+28VDC power supply, realizing its EMI filter function, thus meeting the EMC Requirements of system equipment.
The content of " development of EMC isolated from power filtration module " project development meets national industrial policies, and the product of development belongs to the product of new and high technology, can be used for novel battlebus in airborne equipment, missile equipment and emerging strategic industries.
Current, most domestic equipment is often taked to add all kinds of filter in system DC/DC module front end to realize filtering and DC/DC isolation features.But this technological deficiency is to be unfavorable for that device miniaturization develops, and causes inner space to lose, and filtering shield effectiveness does not reach maximum using yet.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides a kind of miniaturization, EMC isolated from power filtration module that stability is high.
Consider the problems referred to above of prior art, an aspect disclosed in the utility model, the utility model by the following technical solutions:
A kind of EMC isolated from power filtration module, it comprises DC/DC power module and filtering cover, described DC/DC power module front end arranges 4 common mode inductances and a line-line differential mode capacitor, be connected with a line-line differential mode capacitor again after described 4 common mode inductances connect successively, this line-line differential mode capacitor is connected with DC/DC power module again, described DC/DC power module and 4 common mode inductances and a line-line differential mode capacitor are integrated in same printed board, described DC/DC power module is for being arranged on a shell, isolated by described filtering cover between described DC/DC power module and described shell.
In order to realize the utility model better, further technical scheme is:
According to an embodiment of the present utility model, described DC/DC power module rear end also connects at least one line-line differential mode capacitor, and this line-line differential mode capacitor is also integrated in same printed board with described DC/DC power module.
Compared with prior art, one of the beneficial effects of the utility model are:
A kind of EMC isolated from power filtration module of the present utility model, has miniaturization, compact conformation, excellent radiation performance, isolation effect is good, stability is high, overall filtering performance is good; And effectively saved the device space, achieve DC/DC isolation and EMI filtering dual-use function; Also can meet isolated from power and the electromagnetic compatibility test requirement of airborne and missile equipment simultaneously, there is range of application and apparatus adaptability more widely.
Accompanying drawing explanation
In order to clearer explanation present specification embodiment or technical scheme of the prior art, below the accompanying drawing used required in the description to embodiment or prior art is briefly described, apparently, the accompanying drawing that the following describes is only the reference to some embodiments in present specification, for those skilled in the art, when not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 shows the EMC isolated from power filtration module contour structures schematic diagram according to the utility model embodiment.
Fig. 2 shows the EMC isolated from power filtration module electrical block diagram according to the utility model embodiment.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As Fig. 1, shown in Fig. 2, a kind of EMC isolated from power filtration module, it comprises DC/DC power module and filtering cover, described DC/DC power module front end arranges 4 common mode inductances and a line-line differential mode capacitor, be connected with a line-line differential mode capacitor again after described 4 common mode inductances connect successively, this line-line differential mode capacitor is connected with DC/DC power module again, described DC/DC power module and 4 common mode inductances and a line-line differential mode capacitor are integrated in same printed board, described DC/DC power module is for being arranged on a shell, isolated by described filtering cover between described DC/DC power module and described shell.
Described DC/DC power module rear end also connects at least one line-line differential mode capacitor, and this line-line differential mode capacitor is also integrated in same printed board with described DC/DC power module.
EMC isolated from power filtration module is series between power supply and power consumption equipment, and module provides DC/DC isolation features and the EMI filter function of+28VDC power supply.
Again as shown in Figure 1, DC/DC power module is fastened on shell by sunk screw, then by filtering cover, printed board, filter circuit and DC/DC power module is linked together, finally by the input of high temperature flexible cord, export.The feature of this filtration module is compact conformation, excellent radiation performance, isolation effect is good, stability is high, overall filtering performance is good.
Again as shown in Figure 2, DC/DC power module front-end circuit is filter circuit.Due to insulation request, cross-over connection components and parts are not allowed, so have employed the mode of 4 common mode inductance ledger line-line differential mode capacitors.Reach EMI filter effect.In order to promote the quality of power module, control the output ripple of power module, DC/DC module rear end increases suitable line-line differential mode capacitor and is controlled.
In sum, the utility model provides the mode of operation of safety and stability more, has effectively saved the device space, realizes DC/DC isolation and EMI filtering dual-use function; And isolated from power and the electromagnetic compatibility test requirement of airborne and missile equipment can be met simultaneously, there is range of application and apparatus adaptability more widely.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, identical similar portion cross-reference between each embodiment.
Spoken of in this manual " embodiment ", " another embodiment ", " embodiment ", etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and be included at least one embodiment of the application's generality description.Multiple place occurs that statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, when describing specific features, structure or a feature in conjunction with any embodiment, what advocate is also drop in scope of the present utility model to realize this feature, structure or feature in conjunction with other embodiments.
Although be described the utility model with reference to multiple explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and execution mode, these amendments and execution mode will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of and claim open in the application, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (2)
1. an EMC isolated from power filtration module, it is characterized in that it comprises DC/DC power module and filtering cover, described DC/DC power module front end arranges 4 common mode inductances and a line-line differential mode capacitor, be connected with a line-line differential mode capacitor again after described 4 common mode inductances connect successively, this line-line differential mode capacitor is connected with DC/DC power module again, described DC/DC power module and 4 common mode inductances and a line-line differential mode capacitor are integrated in same printed board, described DC/DC power module is for being arranged on a shell, isolated by described filtering cover between described DC/DC power module and described shell.
2. EMC isolated from power filtration module according to claim 1, it is characterized in that described DC/DC power module rear end also connects at least one line-line differential mode capacitor, this line-line differential mode capacitor is also integrated in same printed board with described DC/DC power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520657052.6U CN204886690U (en) | 2015-08-27 | 2015-08-27 | EMC power isolation filter module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520657052.6U CN204886690U (en) | 2015-08-27 | 2015-08-27 | EMC power isolation filter module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886690U true CN204886690U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520657052.6U Active CN204886690U (en) | 2015-08-27 | 2015-08-27 | EMC power isolation filter module |
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| CN (1) | CN204886690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450549A (en) * | 2018-11-26 | 2019-03-08 | 中国人民解放军陆军工程大学 | Photoelectric conversion device and communication system |
-
2015
- 2015-08-27 CN CN201520657052.6U patent/CN204886690U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450549A (en) * | 2018-11-26 | 2019-03-08 | 中国人民解放军陆军工程大学 | Photoelectric conversion device and communication system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |