CN115102561A - Device for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency - Google Patents
Device for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency Download PDFInfo
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- CN115102561A CN115102561A CN202210777777.3A CN202210777777A CN115102561A CN 115102561 A CN115102561 A CN 115102561A CN 202210777777 A CN202210777777 A CN 202210777777A CN 115102561 A CN115102561 A CN 115102561A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 36
- 230000001276 controlling effect Effects 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 title claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 102100039216 Dolichyl-diphosphooligosaccharide-protein glycosyltransferase subunit 2 Human genes 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a device for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency, which relates to the field of transmission electromagnetic interference, and comprises: the signal input module is used for inputting signals to the switch control module through a plurality of channels; the switch control module is used for controlling the signal input module to be connected or disconnected with the output module and the grounding module; the output module is used for converting the output of the signal to be input; the grounding module is used for grounding the input signal without conversion; compared with the prior art, the invention has the beneficial effects that the signal input module is connected with the switch control module, and the switch control module is connected with the output module and the grounding module: the invention changes the electromagnetic interference emission by the conduction of the time-sharing segmented control channel, and obtains the required conversion efficiency by changing the conduction and cut-off conditions of the switch control module, thereby meeting the requirements of different users.
Description
Technical Field
The invention relates to the field of electromagnetic interference emission, in particular to a device for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency.
Background
TX EMI (transmitted electromagnetic interference) is generally related to conversion efficiency, the faster the conversion efficiency, the larger the EM1, and generally the faster the conventional TX buffer is opened without a time-division, so the faster the conversion efficiency, the larger the EM 1.
Disclosure of Invention
The present invention is directed to a device for reducing differential transmission electromagnetic interference by adjusting and controlling conversion efficiency, so as to solve the above-mentioned problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
an apparatus for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency, comprising:
the signal input module is used for inputting signals to the switch control module through a plurality of channels;
the switch control module is used for controlling the signal input module to be connected or disconnected with the output module and the grounding module;
the output module is used for converting the output of the signal to be input;
the grounding module is used for grounding the input signal without conversion;
the signal input module is connected with the switch control module, and the switch control module is connected with the output module and the grounding module;
the device for reducing the differential emission electromagnetic interference by regulating and controlling the conversion efficiency further comprises a using method, and the method comprises the following steps:
step 1, converting and outputting input signals through a plurality of channels;
and 2, respectively carrying out output conversion on different channels at different times.
As a still further scheme of the invention: the switch control module comprises a switch SWP and a switch SWN, one end of the switch SWP is connected with the signal input module, the other end of the switch SWP is connected with the output module and the switch SWN, the other end of the switch SWN is connected with the grounding module, and each channel is provided with a corresponding switch control module.
As a still further scheme of the invention: the switches SWP and SWN are transistors, and are turned on when a voltage is input to a control terminal (for example, a base of an NPN transistor or a G-pole of an NMOS transistor), and turned off when no voltage is input to the control terminal.
As a still further scheme of the invention: PWM signals are input to control ends of the switch SWP and the switch SWN and are adjustable.
As a still further scheme of the invention: in the step 1, the input signal is output through a plurality of channels of the switch control module, and each channel is connected with the output module and the grounding module through the switch control module.
As a still further scheme of the invention: in step 2, the conversion efficiency of the input signal is controlled by switching on or off the switch control module.
Compared with the prior art, the invention has the beneficial effects that: the invention changes the electromagnetic interference emission by the conduction of the time-sharing segmented control channel, and obtains the required conversion efficiency by changing the conduction and cut-off conditions of the switch control module, thereby meeting the requirements of different users.
Drawings
FIG. 1 is a schematic diagram of an apparatus for reducing differential transmission EMI by adjusting conversion efficiency.
FIG. 2 is a block diagram of an apparatus for reducing differential transmission EMI by adjusting and controlling conversion efficiency.
FIG. 3 is a schematic diagram of a method for reducing differential transmission EMI by adjusting and controlling conversion efficiency.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, an apparatus for reducing differential transmission electromagnetic interference by adjusting and controlling conversion efficiency includes:
the signal input module is used for inputting signals to the switch control module through a plurality of channels;
the switch control module is used for controlling the signal input module to be connected or disconnected with the output module and the grounding module;
the output module is used for converting the output of the signal to be input;
the grounding module is used for grounding the input signal without conversion;
the signal input module is connected with the switch control module, and the switch control module is connected with the output module and the grounding module.
In this embodiment: referring to fig. 2, the switch control module includes a switch SWP and a switch SWN, one end of the switch SWP is connected to the signal input module, the other end of the switch SWP is connected to the output module and the switch SWN, the other end of the switch SWN is connected to the ground module, and each channel is provided with a corresponding switch control module.
When the switch SWP and the switch SWN are turned on, the input signal is input to the grounding module (NOUT in fig. 2) through the switch SWP and the switch SWN, and thus no signal conversion is performed; when the switch SWP is closed, the switch SWP is turned on, and the switch SWN is turned off, the input signal is converted through the switch SWP input/output module (at OUTP in fig. 2).
The switch connection mode is not limited to that shown in fig. 2, for example, the switch SWP is directly connected to the output module, the switch SWN is directly connected to the ground module, and the switch SWP is not connected to the switch SWN.
In this embodiment: referring to fig. 2, the switches SWP and SWN are transistors, and when a voltage is input to the control terminal (e.g., the base of the NPN transistor and the G-pole of the NMOS transistor), the switches SWP and SWN are turned on, and when no voltage is input to the control terminal, the switches SWP and SWN are turned off.
Taking an NPN transistor as an example, which refers to the switch SWP1 in fig. 2, the collector is the upper end of the switch SWP1, the emitter is the lower end of the switch SWP1, and the base receives signal control.
In this embodiment: referring to fig. 2, the control terminals of the switch SWP and the switch SWN input PWM signals, and the PWM signals are adjustable.
By adjusting the PWM signal, as shown in FIG. 2, the input signal can flow into the output module through SWP1 between 0S and 10S, the input signal instead flows into the output module through SWP2 between 10S and 15S, and the input signal instead flows into the output module through SWPN between 15S and 35S. Therefore, any conversion efficiency of the input signal is controlled by adjusting the PWM signal, and the required transmitted electromagnetic interference is obtained. In addition, when it needs to be mentioned, the input signal may also flow into the output module through multiple channels at the same time, where the PWM signal is regulated as in the prior art, and is not described again.
In this embodiment: referring to fig. 3, the method for reducing differential transmission electromagnetic interference by adjusting and controlling the conversion efficiency is applied to the apparatus for reducing differential transmission electromagnetic interference by adjusting and controlling the conversion efficiency, and the method includes:
step 1, converting and outputting input signals through a plurality of channels;
and 2, respectively carrying out output conversion on different channels at different time.
In this embodiment: referring to fig. 3, in step 1, an input signal is output through a plurality of channels of the switch control module, and each channel is connected to the output module and the grounding module through the switch control module.
The circuit for outputting a plurality of input signals is obtained through a plurality of channels and a plurality of switch control modules.
In this embodiment: referring to fig. 3, in step 2, the conversion efficiency of the input signal is controlled by turning on or off the switch control module.
According to different actual conditions and different requirements of electromagnetic interference emission on occasions, the conversion efficiency is adjusted.
The working principle of the invention is as follows: the signal input module inputs signals to the switch control module through a plurality of channels, the switch control module controls the signal input module to be switched on or off to the output module and the grounding module, the output module outputs signals to be input for conversion, and the grounding module grounds the input signals without conversion.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. An apparatus for reducing differential transmission electromagnetic interference by adjusting and controlling conversion efficiency, comprising:
the device for reducing the differential emission electromagnetic interference by regulating and controlling the conversion efficiency comprises:
the signal input module is used for inputting signals to the switch control module through a plurality of channels;
the switch control module is used for controlling the signal input module to be connected or disconnected with the output module and the grounding module;
the output module is used for converting the output of the signal to be input;
the grounding module is used for grounding the input signal without conversion;
the signal input module is connected with the switch control module, and the switch control module is connected with the output module and the grounding module;
the device for reducing the differential emission electromagnetic interference by regulating and controlling the conversion efficiency further comprises a using method, and the method comprises the following steps:
step 1, converting and outputting signals input through a plurality of channels;
and 2, respectively carrying out output conversion on different channels at different times.
2. The apparatus of claim 1, wherein the switch control module comprises a switch SWP and a switch SWN, one end of the switch SWP is connected to the signal input module, the other end of the switch SWP is connected to the output module and the switch SWN, the other end of the switch SWN is connected to the ground module, and each channel has a corresponding switch control module.
3. The apparatus of claim 2, wherein the switch SWP and the switch SWN are transistors, and the switch SWP and the switch SWN are turned on when a voltage is inputted to the control terminal, and turned off when a voltage is not inputted to the control terminal.
4. The apparatus of claim 3, wherein the control terminals of the switch SWP and the switch SWN input PWM signals, and the PWM signals are adjustable.
5. The apparatus of claim 1, wherein in step 1, the input signal is outputted via a plurality of channels of the switch control module, and each channel is connected to the output module and the ground module via the switch control module.
6. The apparatus of claim 1 or 5, wherein in step 2, the switching control module is turned on or off to control the conversion efficiency of the input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210777777.3A CN115102561A (en) | 2022-07-04 | 2022-07-04 | Device for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210777777.3A CN115102561A (en) | 2022-07-04 | 2022-07-04 | Device for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency |
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| CN115102561A true CN115102561A (en) | 2022-09-23 |
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| CN202210777777.3A Pending CN115102561A (en) | 2022-07-04 | 2022-07-04 | Device for reducing differential transmission electromagnetic interference by regulating and controlling conversion efficiency |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609637A (en) * | 2008-06-16 | 2009-12-23 | 恩益禧电子股份有限公司 | Driving circuit and display device |
| 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 |
| CN105162317A (en) * | 2014-06-09 | 2015-12-16 | 上海紫竹新兴产业技术研究院 | Performance improved circuit of power MOSFET switch |
| CN105573546A (en) * | 2015-12-03 | 2016-05-11 | 深圳磨石科技有限公司 | Touch display device and electronic device |
| WO2018171613A1 (en) * | 2017-03-21 | 2018-09-27 | 赤多尼科两合股份有限公司 | Two-stage switch power supply |
| CN110442270A (en) * | 2019-08-29 | 2019-11-12 | 深圳市德名利电子有限公司 | The method, apparatus and touch panel of touch screen antidisturbance control |
| CN114123761A (en) * | 2020-09-01 | 2022-03-01 | 格科微电子（上海）有限公司 | Control circuit and method for reducing electromagnetic interference |
-
2022
- 2022-07-04 CN CN202210777777.3A patent/CN115102561A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609637A (en) * | 2008-06-16 | 2009-12-23 | 恩益禧电子股份有限公司 | Driving circuit and display device |
| 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 |
| CN105162317A (en) * | 2014-06-09 | 2015-12-16 | 上海紫竹新兴产业技术研究院 | Performance improved circuit of power MOSFET switch |
| CN105573546A (en) * | 2015-12-03 | 2016-05-11 | 深圳磨石科技有限公司 | Touch display device and electronic device |
| WO2018171613A1 (en) * | 2017-03-21 | 2018-09-27 | 赤多尼科两合股份有限公司 | Two-stage switch power supply |
| CN110442270A (en) * | 2019-08-29 | 2019-11-12 | 深圳市德名利电子有限公司 | The method, apparatus and touch panel of touch screen antidisturbance control |
| CN114123761A (en) * | 2020-09-01 | 2022-03-01 | 格科微电子（上海）有限公司 | Control circuit and method for reducing electromagnetic interference |
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