CN102832829A - Multiplexed output power adapter - Google Patents
Multiplexed output power adapter Download PDFInfo
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- CN102832829A CN102832829A CN2012102011707A CN201210201170A CN102832829A CN 102832829 A CN102832829 A CN 102832829A CN 2012102011707 A CN2012102011707 A CN 2012102011707A CN 201210201170 A CN201210201170 A CN 201210201170A CN 102832829 A CN102832829 A CN 102832829A
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- 238000001914 filtration Methods 0.000 claims abstract description 50
- 230000033228 biological regulation Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 description 6
- 230000009466 transformation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The invention discloses a multiplexed output power adapter, comprising an alternating current input terminal, a shell containing a flyback switching power supply and a direct-current output connecting line, wherein the switching power supply comprises an alternating-current input module, an alternating-current filtration module, a rectifier module and a transformer; the transformer is a multiplexed output transformer; multiplexed output of the multiplexed output transformer passes through the rectification and filtration module and then outputs the constant-voltage direct current; and the direct-current output connecting line comprises a plurality of wires for respectively loading constant-voltage direct current output. In the invention, a multiplexed direct-current output structure is added in the adaptor, particularly, the single direct-current output is converted into multiplexed direct-current output by a multiplexed output transformer or a DC-DC (Direct Current-Direct Current) converter, and then, is connected with the inner part of a display to be used by different devices, therefore, power demand in the display can be satisfied effectively.
Description
Technical field
The present invention relates to the switch power technology field, particularly relate to the power supply adaptor of the multichannel output of a kind of display, notebook or TV use.
Background technology
Along with the develop rapidly of electronic equipment, each class of electronic devices has been enriched user's routine work learning life greatly, but the thing followed is the indispensable power demands of each class of electronic devices.Display is as the indispensable part of personal desktop computer, and its adapter is being played the part of always and only is the role of monitor power supply.Adapter, is constantly weeded out the old and bring forth the new except the hommization aspect along with the development of technology is maked rapid progress as supply module, also in function aspects the embodiment of advancing by leaps and bounds is arranged,
In the prior art, adapter generally is divided into following two kinds of shapes, and first kind is the Normal type, needs circumscripted power line to connect civil power; Second kind is Wall Type type, does not need circumscripted power line, can directly utilize the socket connection civil power, and above adapter only plays the effect of power supply.
The basic circuit structure of existing adapter comprises interchange input module, ac filter module, rectification module, transformer, power supply control chip, feedback circuit module, filtering high-frequency rectifier module; Alternating current inputs to power supply adaptor from input module; And carry out through rectification module AC rectification being filtered into direct current again after the Filtering Processing through the ac filter module; Then with described direct current input transformer; Described transformer carries out decompression transformation with the direct current of importing and obtains a low-voltage dc pulse moving voltage; Then described low-voltage dc pulse moving voltage is imported said filtering high-frequency rectifier module; Said filtering high-frequency rectifier module with said low-voltage dc pulse moving voltage rectifying and wave-filtering after output voltage direct current stably; Simultaneously direct current is imported said feedback circuit module and carry out the voltage stabilizing adjustment, described feedback circuit transfers to power supply control chip with the variation of output voltage, recently realizes the purpose of the change of input with the realization output voltage stabilization by power supply control chip adjustment duty.
The power supply adaptor external structure of prior art comprises AC input terminal, accommodates the plastic casing and the direct current output connecting line of above-mentioned basic circuit.When the user need use the electric equipment of direct current input power supply; The adapter AC input terminal is exchanged input socket with civil power to be connected; Direct current output connecting line is connected with electrical appliance, can convert alternating current into corresponding direct current, drives the electrical appliance operate as normal.
But its output interface of such power supply adaptor is connected with the power input terminal of display; It can only provide a magnitude of voltage; And display interior needs several different voltages with different values, so just must be to the output voltage of power supply adaptor by the DC-to-DC transducer of display main board transformation once more, the magnitude of voltage that can obtain hoping just now; So just make the mainboard size increase; Increase the mainboard cost, and the small-signal of transmission disturbs by power supply signal easily, the inner DC-DC transducer of display main board has also aggravated the display interior heat dissipation problem simultaneously.
Summary of the invention
The objective of the invention is to the technological deficiency that exists in the prior art, and a kind of power supply adaptor with multivoltage output is provided.
For realizing that the technical scheme that the object of the invention adopted is:
A kind of power supply adaptor of multichannel output; Comprise AC input terminal; Accommodate the housing and the direct current output connecting line of inverse-excitation type switch power-supply; Described Switching Power Supply comprises interchange input module, ac filter module, rectification module and transformer; Described transformer is the multichannel output transformer, and direct current of voltage regulation is exported in the repeatedly level output of described multichannel output transformer respectively behind rectification filtering module, and described direct current output connecting line comprises a plurality of leads that carry direct current of voltage regulation output respectively.
Described multichannel output transformer is No. three output transformers, and three tunnel outputs of described No. three output transformers obtain direct current of voltage regulation respectively behind the rectification filtering module rectifying and wave-filtering.
Described rectification filtering module comprises rectifier diode and filter capacitor parallelly connected with described rectifier diode and an end ground connection.
A kind of power supply adaptor of multichannel output; Comprise AC input terminal; Accommodate the housing and the direct current output connecting line of Switching Power Supply; Described Switching Power Supply comprises interchange input module and secondary commutation filtration module; It also comprises the transducer DC-DC transducer that is connected with the output of secondary commutation filtration module, and described transducer DC-DC transducer is exported the direct current that transfers a plurality of different voltages to the direct current of secondary commutation filtration module, and described direct current output connecting line comprises a plurality of leads that carry the output of DC-DC transducer direct current respectively.
Described transducer DC-DC transducer is the multichannel output translator, and its input is connected with the output of secondary commutation filtration module, and the output of described multichannel output translator is connected to by the energy supply end through lead respectively.
Described DC-to-dc multiplexer is the two-way output translator.
Described transducer DC-DC transducer is two single output translators, and the input of described single output translator is connected to the output of secondary commutation filtration module respectively, and the output of described single output translator is connected to by the energy supply end through lead respectively.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is through increasing many direct currents export structure in adapter; Specifically, through many output transformers or transducer DC-DC transducer, convert single direct current output the output of into multicircuit direct current; And different voltages with different is connected directly to display interior uses for different components; Can effectively satisfy the display interior need for electricity, need not to carry out voltage transitions, save internal circuit design in its inside of demonstration; Can effectively avoid simultaneously the influence of voltage transitions, improve the demonstration precision the small-signal transmission.Also can reduce the display main board size, reduce the mainboard cost, also efficiently solve the display heat dissipation problem, prevent that inner member is aging.
Description of drawings
Shown in Figure 1 is first embodiment of the present invention electrical block diagram;
Shown in Figure 2 is the particular circuit configurations sketch map of first embodiment of invention;
Shown in Figure 3 is second embodiment of the present invention electrical block diagram;
Shown in Figure 4 is the particular circuit configurations sketch map of the second embodiment of the present invention.
Among the figure: 1. exchange input module, 2. emi-filter module, 3. rectification module, 4. transformer, 5 secondary commutation filtration modules; 6. feed back and protection module, 7. power supply control chip, 8. secondary commutation filtration module, 9. secondary commutation filtration module; 11. the interchange input module, 12. emi-filter modules, 13. rectification modules, 14. transformers, 15 secondary commutation filtration modules; 16. feedback and protection module, 17. power supply control chips, 18.DC-DC transducer, 19.DC-DC transducer.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explain.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Like Fig. 1, shown in 2; The power supply adaptor of first embodiment of the invention multichannel output comprises AC input terminal, accommodates the housing and the direct current output connecting line of inverse-excitation type switch power-supply; Described Switching Power Supply comprises interchange input module 1, emi-filter module 2, rectification module 3, transformer 4, secondary commutation filtration module 5, secondary commutation filtration module 8 and secondary commutation filtration module 9; Feedback and protection module 6 and power supply control chip 7, because generally only three road voltages need be provided for display, the one tunnel to backlight; One the tunnel gives mainboard and preceding control, and one the tunnel gives sound.Described transformer is No. three output transformers; Wherein the output of secondary commutation filtration module 5 is identical with prior art; Output 14V direct voltage behind rectifying and wave-filtering; The output of secondary commutation circuit 8 and rectification secondary circuit 9 is output 5V and 3V voltage behind rectifying and wave-filtering respectively, in direct current output connecting line, is provided with simultaneously and the corresponding lead of each voltage output, so that different voltages with different is transferred to display interior.Wherein, carry out rectifying and wave-filtering after the secondary output of the design of No. three output transformers and No. three output transformers, identical with prior art, repeat no more at this.
Preferably; The power supply adaptor of these three tunnel outputs; Adopt traditional inverse-excitation type switch power-supply topology; Alternating current is from exchanging the input terminal input and carrying out through rectification module AC rectification being filtered into direct current again after the Filtering Processing through emi-filter module 2; Then described direct current is inputed to the multichannel output transformer under the control of power supply control chip, described transformer carries out the low-voltage dc pulse moving voltage that decompression transformation obtains three correspondences with the direct current of input, corresponding then secondary commutation filtration module with three low-voltage dc pulse moving voltage rectifying and wave-filterings after three different electric of output press direct current stably; Simultaneously will be to that road output of main board power supply; Carry out the voltage stabilizing adjustment as the said feedback circuit module of feedback input, described feedback circuit transfers to power supply control chip with the variation of output voltage, recently realizes the purpose of the change of input with the realization output voltage stabilization by power supply control chip adjustment duty.
Shown in Figure 2 is the particular circuit configurations sketch map of present embodiment; For second subprime rectification circuit that increases and grade rectification filtering module for the third time; It comprises rectifier diode of connecting with transformer output and the filter capacitor that is connected in parallel on described rectifier diode rear portion and an end ground connection respectively; The rectification filtering module simple and stable structure property that this rectifier diode and filter capacitor are formed is high, also can adopt other forms of rectifying and wave-filtering structure certainly.
Second embodiment
Like Fig. 3, shown in 4; The power supply adaptor of second embodiment of the invention multichannel output; Comprise AC input terminal; Accommodate the housing and the direct current output connecting line of Switching Power Supply; Described Switching Power Supply comprises interchange input module 11, emi-filter module 12, rectification module 13, transformer 14, secondary commutation filtration module 15, feedback and protection module 16 and power supply control chip 17; And with the DC-DC transducer 18 and transducer DC-DC transducer 19 of the direct current output-parallel of described secondary commutation filtration module; Described two DC-DC transducers can convert the 14V direct current of secondary commutation filtration module output respectively to two voltage outputs of 3V and 5V, are provided with the corresponding lead that carries three different magnitudes of voltage in the simultaneously described direct current output connecting line, so that different voltages with different is transferred to display interior.
Generally for display; Because it needs three different direct voltages, so the direct current of this secondary commutation filtration module output is identical with prior art, the direct voltage of output 14V; Respectively the 14V direct current of input is converted into the 5V and the 3V direct current of output with two DC-DC transducers; Can effectively satisfy the display interior need for electricity, need not to carry out voltage transitions, save internal circuit design in its inside of demonstration; Can effectively avoid simultaneously the influence of voltage transitions, improve the demonstration precision the signal transmission.Certainly adopt the transducer that described transducer DC-DC transducer can adopt a dual output, its input 14V direct current is exported 5V and 3V direct current simultaneously, and this is easy to realize to those skilled in the art, and physical circuit repeats no more.
Preferably; The power supply adaptor of these three tunnel outputs; Adopt traditional inverse-excitation type switch power-supply topology; Alternating current is from exchanging the input terminal input and carrying out through rectification module AC rectification being filtered into direct current again after the Filtering Processing through emi-filter module; Then with described direct current input transformer behind power supply control chip; Described transformer carries out the direct current of input decompression transformation and obtains a low-voltage dc pulse moving voltage, then the secondary commutation filtration module with low-voltage dc pulse moving voltage rectifying and wave-filtering after voltage of output direct current stably, carry out voltage stabilizing adjustment will for simultaneously the said feedback circuit module of the input of mainboard energy supply; Described feedback circuit transfers to power supply control chip with the variation of output voltage, recently realizes the purpose of the change of input with the realization output voltage stabilization by power supply control chip adjustment duty.Simultaneously, the transducer DC-DC transducer that is connected in parallel to direct voltage output is that the two-way low-voltage is with direct confession display interior components and parts with voltage transitions.
Shown in Figure 4 is the particular circuit configurations sketch map of present embodiment; It adopts two DC-DC transducers to carry out voltage transitions; Described two DC-DC transducers comprise control chip and are arranged on control chip peripheral circuit on every side that for the DC-DC transducer of different model, its control chip is slightly different with peripheral circuit; This is easy to realize for a person skilled in the art, no longer launches to describe at this.The input of DC-DC transducer is connected to the output of secondary commutation filtration module, the voltage output after described DC-DC transducer transforms through lead directly be communicated to display interior by supply unit, circuit connects clear, simple and stable structure property is high.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (7)
1. the power supply adaptor of multichannel output; Comprise AC input terminal; Accommodate the housing and the direct current output connecting line of inverse-excitation type switch power-supply; Described Switching Power Supply comprises interchange input module, ac filter module, rectification module and transformer, it is characterized in that described transformer is the multichannel output transformer; Direct current of voltage regulation is exported in the repeatedly level output of described multichannel output transformer respectively behind rectification filtering module, described direct current output connecting line comprises a plurality of leads that carry direct current of voltage regulation output respectively.
2. power supply adaptor as claimed in claim 1 is characterized in that: described multichannel output transformer is No. three output transformers, and three tunnel outputs of described No. three output transformers obtain direct current of voltage regulation respectively behind the rectification filtering module rectifying and wave-filtering.
3. according to claim 1 or claim 2 power supply adaptor, it is characterized in that: described rectification filtering module comprises rectifier diode and filter capacitor parallelly connected with described rectifier diode and an end ground connection.
4. the power supply adaptor of multichannel output; Comprise AC input terminal; Accommodate the housing and the direct current output connecting line of Switching Power Supply; Described Switching Power Supply comprises interchange input module and secondary commutation filtration module; It is characterized in that: it also comprises the transducer DC-DC transducer that is connected with the output of secondary commutation filtration module, and described transducer DC-DC transducer is exported the direct current that transfers a plurality of different voltages to the direct current of secondary commutation filtration module, and described direct current output connecting line comprises a plurality of leads that carry the output of DC-DC transducer direct current respectively.
5. power supply adaptor as claimed in claim 4; It is characterized in that; Described transducer DC-DC transducer is the multichannel output translator, and its input is connected with the output of secondary commutation filtration module, and the output of described multichannel output translator is connected to by the energy supply end through lead respectively.
6. power supply adaptor as claimed in claim 5 is characterized in that, described DC-to-dc multiplexer is the two-way output translator.
7. power supply adaptor as claimed in claim 3; It is characterized in that; Described transducer DC-DC transducer is two single output translators; The input of described single output translator is connected to the output of secondary commutation filtration module respectively, and the output of described single output translator is connected to by the energy supply end through lead respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102011707A CN102832829A (en) | 2012-06-18 | 2012-06-18 | Multiplexed output power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102011707A CN102832829A (en) | 2012-06-18 | 2012-06-18 | Multiplexed output power adapter |
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| CN102832829A true CN102832829A (en) | 2012-12-19 |
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| CN2012102011707A Pending CN102832829A (en) | 2012-06-18 | 2012-06-18 | Multiplexed output power adapter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051211A (en) * | 2012-12-24 | 2013-04-17 | 天津三星电子有限公司 | Power adapter |
| CN105183065A (en) * | 2015-10-16 | 2015-12-23 | 天津七六四通信导航技术有限公司 | Portable 28V DC (Direct Current) voltage-stabilized power supply |
| CN105553051A (en) * | 2016-02-29 | 2016-05-04 | 陈涛 | Port management method for multi-port output direct current power supply |
| CN105676983A (en) * | 2014-11-21 | 2016-06-15 | 鸿富锦精密工业(武汉)有限公司 | Supply circuit of mainboard |
| WO2018090454A1 (en) * | 2016-11-15 | 2018-05-24 | 深圳Tcl数字技术有限公司 | Switching power supply and television |
| WO2020224177A1 (en) * | 2019-05-07 | 2020-11-12 | 深圳威富智慧家居科技有限公司 | Continuous direct current output device |
| CN113992041A (en) * | 2021-12-29 | 2022-01-28 | 广州市科锐达光电技术股份有限公司 | Energy-conserving low-power consumption glass cabinet power adapter |
| CN118523593A (en) * | 2024-05-16 | 2024-08-20 | 中山市立尔光电科技有限公司 | LED plug power adapter and LED plug power |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051211A (en) * | 2012-12-24 | 2013-04-17 | 天津三星电子有限公司 | Power adapter |
| CN105676983A (en) * | 2014-11-21 | 2016-06-15 | 鸿富锦精密工业(武汉)有限公司 | Supply circuit of mainboard |
| CN105183065A (en) * | 2015-10-16 | 2015-12-23 | 天津七六四通信导航技术有限公司 | Portable 28V DC (Direct Current) voltage-stabilized power supply |
| CN105553051A (en) * | 2016-02-29 | 2016-05-04 | 陈涛 | Port management method for multi-port output direct current power supply |
| CN105553051B (en) * | 2016-02-29 | 2018-03-30 | 惠州祺瑞电工有限公司 | A kind of port management method of more mouthfuls of output dc sources |
| WO2018090454A1 (en) * | 2016-11-15 | 2018-05-24 | 深圳Tcl数字技术有限公司 | Switching power supply and television |
| WO2020224177A1 (en) * | 2019-05-07 | 2020-11-12 | 深圳威富智慧家居科技有限公司 | Continuous direct current output device |
| CN113992041A (en) * | 2021-12-29 | 2022-01-28 | 广州市科锐达光电技术股份有限公司 | Energy-conserving low-power consumption glass cabinet power adapter |
| CN118523593A (en) * | 2024-05-16 | 2024-08-20 | 中山市立尔光电科技有限公司 | LED plug power adapter and LED plug power |
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Application publication date: 20121219 |