CN201039335Y - Power supply circuit and TV set for multi-channel voltage switch output - Google Patents
Power supply circuit and TV set for multi-channel voltage switch output Download PDFInfo
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- CN201039335Y CN201039335Y CNU200720021636XU CN200720021636U CN201039335Y CN 201039335 Y CN201039335 Y CN 201039335Y CN U200720021636X U CNU200720021636X U CN U200720021636XU CN 200720021636 U CN200720021636 U CN 200720021636U CN 201039335 Y CN201039335 Y CN 201039335Y
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- switch
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Abstract
The utility model discloses a power supplying circuit which can realize a multi-channel voltage switching output and a television, comprising a processor, a multi-channel supply power source and a switch circuit comprising multiple switch channels. One end of the switch channels of the switch circuit is respectively and correspondingly connected with the multi-channel supply power source and the other end is connected with a power source end of a load; a controlling end receives a switch controlling signal sent by the processor and controls the communication state of the switch channels according to the switch controlling signal. The switch circuit is connected between the multi-channel supply power source and the power source end of the load, so that the utility model realizes the switching output of the multi-channel supply voltage through the communication and breaking states of the switch channels in the switch circuit; the utility model not only has the marked advantages of simple circuit structure, low cost and high reliability, but also can satisfy the power-on work of the load circuit when necessary and power-off when unnecessary so as to greatly reduce the power consumption of the integral appliance and reach the aim of saving energy and reducing consumption.
Description
Technical field
The utility model belongs to the power circuit technical field, specifically, relates to a kind of multiple voltage power demands that satisfies, and realizes that plurality of voltages switches the power supply circuits of output.
Background technology
In present most Circuits System designs; use the electronic device with different power demands to build circuit through regular meeting, this just needs a kind of power circuit that can compatible multiple voltage power demands of design to satisfy the power demands of dissimilar electronic devices.For example in the Circuits System design of tv product; use the electronic device of 5V and 3.3V power supply through regular meeting; the supply power mode of existing power supply circuit is after television set works on power; no matter whether device work; always to described two class devices power supply; cause the waste of the energy, and the consumption in device useful life.Can when working, electronic device provide operating voltage if design is a kind of for it, and when it is not worked, stop power supply, make electronic device be in the outage off position, so not only can saves energy, prolong the useful life of tv product, and help improving the complete machine quality of electric equipment, strengthen its market competitiveness.
Based on this, how utilizing simple circuit configuration to design a kind of power circuit that satisfies the multiple voltage power demands is subject matter to be solved in the utility model.
The utility model content
The purpose of this utility model is to provide a kind of plurality of voltages of realizing to switch the power supply circuits of output, not only can satisfy the power demands of multiple load device, and can realize only powering when load device needs work, to reach energy saving purposes.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of plurality of voltages of realizing switches the power supply circuits of output, comprises processor, multiple-way supply power supply and includes the switching circuit of Multiplexer Channel; One end of the Multiplexer Channel of described switching circuit respectively with the corresponding connection of described multiple-way supply power supply, the other end connects the power end of load, the switch controlling signal that the control end receiving processor sends, and control the connected state of its switch ways according to described switch controlling signal.
A kind of enforcement structure as described switching circuit, in described switching circuit, include multichannel NPN type triode, the base stage of described multichannel NPN type triode respectively with the corresponding connection of multichannel I/O mouth of described processor, collector electrode respectively with the corresponding connection of described multiple-way supply power supply, emitter connects the power end of described load; Described processor is exported described switch controlling signal by its I/O mouth.
Another kind as described switching circuit is implemented structure, in described switching circuit, include multichannel NPN type triode and multichannel P-channel field-effect transistor (PEFT) pipe, the base stage of described multichannel NPN type triode respectively with the corresponding connection of multichannel I/O mouth of described processor, the switch controlling signal that receiving processor sends, collector electrode respectively with the corresponding connection of grid of described multichannel P-channel field-effect transistor (PEFT) pipe, and separately by the described multiple-way supply power supply of the corresponding connection of one road divider resistance, emitter is separately by another road divider resistance ground connection; The source electrode of described multichannel P-channel field-effect transistor (PEFT) pipe respectively with the corresponding connection of described multiple-way supply power supply, drain electrode connects the power end of described load.
The third enforcement structure as described switching circuit, described switching circuit can adopt the integrated switch chip to realize, its channel selecting control end connects the switch controlling signal output of described processor, selects to be communicated with corresponding switch ways according to the level state of described switch controlling signal.
Further, when adopting the integrated switch chip to form switching circuit, the switch controlling signal output of described processor can adopt the multichannel I/O mouth of processor or digital-to-analogue conversion port to realize.
In conjunction with above-mentioned power supply circuits, the utility model has proposed a kind of television set that includes described power supply circuits again, and wherein, described processor, multiple-way supply power supply and the switching circuit that includes Multiplexer Channel all are arranged on the TV SKD.Described processor can adopt the main decoder chip of television set to realize, select the function carried out according to the user, export corresponding switch controlling signal, its corresponding switch ways of control switch circuit gating, and then provide its required operating voltage to the load circuit of finishing described function, with the response user instruction.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by being connected switching circuit between the power end of multiple-way supply power supply and load, utilize the connection of Multiplexer Channel in the switching circuit and switching that off state is realized multiple-way supply voltage output, not only have significant advantages such as circuit structure is simple, cost is low, reliability height, and can satisfy load circuit and work on power when needed, power down is when not required turn-offed, thereby greatly reduced Overall Power Consumption, reached energy saving purposes.
Description of drawings
Fig. 1 switches the circuit theory diagrams of a kind of embodiment of the power supply circuits of exporting for the plurality of voltages realized that the utility model proposed;
Fig. 2 is the circuit theory diagrams of second kind of embodiment of described power supply circuits;
Fig. 3 is the circuit theory diagrams of the third embodiment of described power supply circuits.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
The utility model proposes a kind of power supply circuits of realizing that plurality of voltages switch to be exported for energy-conservation, consumption reduction, specifically comprises processor, multiple-way supply power supply and includes the switching circuit of Multiplexer Channel.Wherein, one end of the Multiplexer Channel of described switching circuit respectively with the corresponding connection of described multiple-way supply power supply, the other end connects the power end of load circuit, the switch controlling signal that the control end receiving processor sends, and control the connected state of its switch ways according to described switch controlling signal.When the back a certain load device of level needs work, send the control signal of the switch ways that gating is connected with the required power supply of this road load device to switching circuit by processor, and then realize the power supply of power supply to load device, satisfy the requirement that works on power of load device.The utility model by adopt load device only when needing work to its mode of operation of powering, reached the circuitry energy saving purposes.
The way of described multiple-way supply power supply and potential value can require to determine that specifically the utility model does not specifically limit this according to the quantity of load and the difference of required power supply.For convenience of description, be that example is specifically addressed described power supply circuit construction with plurality of voltages switching output function only below the utility model with duplex feeding power supply 3.3V, 5V commonly used at present.
Embodiment one, and described switching circuit can select two-way NPN type triode V1, V2 to connect realization simply, as shown in Figure 1.The switch controlling signal output CTRL1 of the base stage connection processing device of triode V1 specifically can adopt wherein one road I/O cause for gossip of processor existing; Collector electrode connects the 3.3V power supply, and emitter connects the power end VCC of the load that needs the 3.3V power supply.In like manner, the switch controlling signal output CTRL2 of the base stage connection processing device of triode V2 specifically can adopt other one road I/O cause for gossip of processor existing; Collector electrode connects the 5V power supply, and emitter connects the power end VCC of the load that needs the 5V power supply.Processor is exported switch controlling signal CTRL1, the CTRL2 of different high-low levels by its I/O mouth, and then controls the conducting state of described two triode V1, V2.
When needs used 3.3V load device or functional circuit work, processor sent high level signal by its CTRL1 mouth, by its CTRL2 mouth output low level signal.At this moment, NPN type triode V1 conducting, triode V2 ends, thereby the power end of 3.3V load device is connected with the 3.3V power supply, has realized the direct current supply of 3.3V power supply to the 3.3V load device.In like manner, when needs used 5V load device or functional circuit work, processor sent low level signal by its CTRL1 mouth, by its CTRL2 mouth output high level switch controlling signal.At this moment, NPN type triode V1 ends, triode V2 conducting, thus the power end of 5V load device is connected with the 5V power supply, realized of the direct current supply of 5V power supply to the 5V load device.
In order to keep the stable of power supply output voltage, between 3.3V power supply and ground, be connected with two filter capacitor C58, CB198 parallel with one another; Be connected with two filter capacitor C52, CB199 parallel with one another between 5V power supply and ground, effectively the wave interference of making an uproar of sneaking in the filtering power supply keeps the pure of power supply.
Certainly, switch controlling signal output CTRL1, the CTRL2 of described processor are not limited in above-mentioned I/O mouth, also can adopt the digital-to-analogue conversion port of processor to realize.
Other components and parts that described switching circuit also can adopt field effect transistor, relay or switch control chip etc. to have the gate-controlled switch effect connect realizes that the utility model is not limited thereto.
Embodiment two, and described switching circuit also can adopt two-way NPN type triode V1, V2 to be connected realization with an integrated chip U47 who is integrated with two P channel MOS tubes, as shown in Figure 2.The switch controlling signal output CTRL1 of the base stage connection processing device of NPN type triode V1 specifically can adopt wherein one road I/O cause for gossip of processor existing, the switch controlling signal that receiving processor sends; Collector electrode connects the extreme G1 of the first grid of two P channel MOS tube U47 on the one hand, is connected with the 3.3V power supply by divider resistance R156 on the other hand, and described 3.3V power supply is by filter capacitor C56, CB198 ground connection in parallel each other; Emitter is by divider resistance R157 ground connection.In like manner, the switch controlling signal output CTRL2 of the base stage connection processing device of NPN type triode V2 specifically can adopt other one road I/O cause for gossip of processor existing, the switch controlling signal that receiving processor sends; Collector electrode is connected with the second grid end G2 of two P channel MOS tube U47 on the one hand, links to each other with the 5V power supply by divider resistance R163 on the other hand, and described 5V power supply is by filter capacitor C52, CB199 ground connection parallel with one another; Emitter is by divider resistance R164 ground connection.Two source terminal S1, the S2 of described couple of P channel MOS tube U47 are connected with the 5V power supply is corresponding with 3.3V respectively, and drain D 1～D4 connects the power end VCC of load.
Its operation principle is: when complete machine need use 3.3V load device or functional circuit work, processor sent the high level switch controlling signal by its CTRL1 mouth, by its CTRL2 mouth output low level signal.At this moment, NPN type triode V1 conducting, 3.3V power supply is under the dividing potential drop effect of divider resistance R156, R157, make the first grid G1 voltage that is input to two P channel MOS tube U47 be lower than its source S 1 voltage, and then the first passage conducting of the two P channel MOS tube U47 of control, the connecting path that is communicated with 3.3V power supply and 3.3V load power source is realized the direct current supply to the 3.3V load device.Because the CTRL2 mouth output low level signal of processor is so triode V2 ends.At this moment, the second road metal-oxide-semiconductor of two P channel MOS tube U47 ends owing to its source voltage S2 equals grid voltage G2, and therefore, the connecting path of blocking-up 5V power supply is guaranteed the stable+3.3V direct voltage of its drain electrode end output.
Power supply and above-mentioned 3.3V power supply to the 5V load device are similar, and the utility model does not repeat them here.
Certainly, described couple of P channel MOS tube integrated chip U47 equally also can adopt two independently P-channel field-effect transistor (PEFT) pipe realizations, and its syndeton is the same, and the utility model does not specifically limit this.
Embodiment three, and in order to simplify circuit structure, described switching circuit can also adopt integrated switch chip N1 to realize, as shown in Figure 3.The channel selecting control end SA of described switch chip N1 connects the switch controlling signal output CTRL1 of described processor, select control end SB to connect the switch controlling signal output CTRL2 of described processor, two switch passage A, B link to each other with the 5V power supply is corresponding with the 3.3V power supply respectively, and common port COM connects the power end VCC of follow-up load.Described switch chip N1 selects to be communicated with a wherein way switch passage according to the high-low level state of its channel selecting control end SA, control signal CTRL1, CTRL2 that SB receives, and then realizes the switching output to 3.3V and 5V power supply.
Equally, in order to keep the stable of 3.3V and 5V power supply output voltage, between 3.3V power supply and ground, be connected with two filter capacitor C58, CB198 parallel with one another; Between 5V power supply and ground, be connected with two filter capacitor C52, CB199 parallel with one another.
Described switch chip N1 can adopt the integrated chip of the multiple model with Multiplexer Channel to realize, for some switch chip, its channel selecting control end is realized the selection of switch passage according to the voltage potential difference that receives, when selecting this switch chip for use, its channel selecting control end needs the digital-to-analogue conversion port DAC of connection processing device to switch requirement to satisfy it.Because this technology contents is that those skilled in the art are common, therefore, the utility model is not specifically described at this.
Embodiment four, and the utility model has proposed a kind of television set with described power supply circuits again in conjunction with the said switching circuit structure.Described processor, 3.3V and 5V power supply and switching circuit all are arranged on the TV SKD.In order to simplify circuit structure, reduce cost, can adopt the main decoder chip of television set to be also used as described processor.Described load can be concrete components and parts on the TV SKD or the modular circuit of finishing some specific function of television set, for example: section directory amplification module circuit or network browsing modular circuit or the like.When the user selects to carry out a certain function, during such as function of surfing the Net, the main decoder chip receives user instruction, and then the potential state of definite its switch controlling signal output CTRL1, CTRL2, to realize gating to respective switch passage in the switching circuit, for the network browsing modular circuit provides working power, realize the wired or wireless networking capabilities of television set.
Certainly, the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. can realize that plurality of voltages switches the power supply circuits of output, is characterized in that for one kind: comprise processor, multiple-way supply power supply and include the switching circuit of Multiplexer Channel; One end of the Multiplexer Channel of described switching circuit respectively with the corresponding connection of described multiple-way supply power supply, the other end connects the power end of load, the switch controlling signal that the control end receiving processor sends, and control the connected state of its switch ways according to described switch controlling signal.
2. power supply circuits according to claim 1, it is characterized in that: in described switching circuit, include multichannel NPN type triode, the base stage of described multichannel NPN type triode respectively with the corresponding connection of multichannel I/O mouth of described processor, collector electrode respectively with the corresponding connection of described multiple-way supply power supply, emitter connects the power end of described load; Described processor is exported described switch controlling signal by its I/O mouth.
3. power supply circuits according to claim 1, it is characterized in that: in described switching circuit, include multichannel NPN type triode and multichannel P-channel field-effect transistor (PEFT) pipe, the base stage of described multichannel NPN type triode respectively with the corresponding connection of multichannel I/O mouth of described processor, the switch controlling signal that receiving processor sends, collector electrode respectively with the corresponding connection of grid of described multichannel P-channel field-effect transistor (PEFT) pipe, and separately by the described multiple-way supply power supply of the corresponding connection of one road divider resistance, emitter is separately by another road divider resistance ground connection; The source electrode of described multichannel P-channel field-effect transistor (PEFT) pipe respectively with the corresponding connection of described multiple-way supply power supply, drain electrode connects the power end of described load.
4. power supply circuits according to claim 1, it is characterized in that: described switching circuit is the integrated switch chip, its channel selecting control end connects the switch controlling signal output of described processor, selects to be communicated with corresponding switch ways according to the level state of described switch controlling signal.
5. power supply circuits according to claim 4 is characterized in that: the switch controlling signal output of described processor is the multichannel I/O mouth or the digital-to-analogue conversion port of processor.
6. one kind has and can realize that plurality of voltages switches the television set of the power supply circuits of output, and it is characterized in that: described TV motherboard is provided with processor, multiple-way supply power supply and includes the switching circuit of Multiplexer Channel; One end of the Multiplexer Channel of described switching circuit respectively with the corresponding connection of described multiple-way supply power supply, the other end connects the power end of load, the switch controlling signal that the control end receiving processor sends, and control the connected state of its switch ways according to described switch controlling signal.
7. television set according to claim 6, it is characterized in that: in described switching circuit, include multichannel NPN type triode, the base stage of described multichannel NPN type triode respectively with the corresponding connection of multichannel I/O mouth of described processor, collector electrode respectively with the corresponding connection of described multiple-way supply power supply, emitter connects the power end of described load; Described processor is exported described switch controlling signal by its I/O mouth.
8. television set according to claim 6, it is characterized in that: in described switching circuit, include multichannel NPN type triode and multichannel P-channel field-effect transistor (PEFT) pipe, the base stage of described multichannel NPN type triode respectively with the corresponding connection of multichannel I/O mouth of described processor, the switch controlling signal that receiving processor sends, collector electrode respectively with the corresponding connection of grid of described multichannel P-channel field-effect transistor (PEFT) pipe, and separately by the described multiple-way supply power supply of the corresponding connection of one road divider resistance, emitter is separately by another road divider resistance ground connection; The source electrode of described multichannel P-channel field-effect transistor (PEFT) pipe respectively with the corresponding connection of described multiple-way supply power supply, drain electrode connects the power end of described load.
9. television set according to claim 6, it is characterized in that: described switching circuit is the integrated switch chip, its channel selecting control end connects the switch controlling signal output of described processor, selects to be communicated with corresponding switch ways according to the level state of described switch controlling signal.
10. television set according to claim 9 is characterized in that: the switch controlling signal output of described processor is the multichannel I/O mouth or the digital-to-analogue conversion port of processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720021636XU CN201039335Y (en) | 2007-04-29 | 2007-04-29 | Power supply circuit and TV set for multi-channel voltage switch output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720021636XU CN201039335Y (en) | 2007-04-29 | 2007-04-29 | Power supply circuit and TV set for multi-channel voltage switch output |
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| Publication Number | Publication Date |
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| CN201039335Y true CN201039335Y (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200720021636XU Expired - Fee Related CN201039335Y (en) | 2007-04-29 | 2007-04-29 | Power supply circuit and TV set for multi-channel voltage switch output |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102547102A (en) * | 2010-12-28 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Camera equipment and image sensor replacing method |
| CN104426391A (en) * | 2013-08-23 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | DC power source circuit |
| CN104617772A (en) * | 2013-11-04 | 2015-05-13 | 深圳市海洋王照明工程有限公司 | Wireless voltage conversion device |
-
2007
- 2007-04-29 CN CNU200720021636XU patent/CN201039335Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102547102A (en) * | 2010-12-28 | 2012-07-04 | 鸿富锦精密工业（深圳）有限公司 | Camera equipment and image sensor replacing method |
| CN102547102B (en) * | 2010-12-28 | 2014-12-03 | 南通新业电子有限公司 | Camera equipment and image sensor replacing method |
| CN104426391A (en) * | 2013-08-23 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | DC power source circuit |
| CN104617772A (en) * | 2013-11-04 | 2015-05-13 | 深圳市海洋王照明工程有限公司 | Wireless voltage conversion device |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20080319 Termination date: 20110429 |