CN205375262U - Change TV voltage output's circuit - Google Patents
Change TV voltage output's circuit Download PDFInfo
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- CN205375262U CN205375262U CN201620036556.0U CN201620036556U CN205375262U CN 205375262 U CN205375262 U CN 205375262U CN 201620036556 U CN201620036556 U CN 201620036556U CN 205375262 U CN205375262 U CN 205375262U
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Abstract
The utility model discloses a change TV voltage output's circuit, but CPU voltage dynamic adjustment's intelligent TV is applied to to the circuit, and it includes: power module and adjustable feedback circuit, power module for carry voltage to CPU, adjustable feedback circuit for magnitude of voltage after dynamic adjustment output voltage will adjust feeds back to power module, power module adopts and takes the voltage output management chip of negative feedback, adjustable feedback circuit includes enhancement mode MOS pipe and resistance. The utility model provides a change TV voltage output's circuit, through introducing feedback output, control MOS pipe grid changes the feedback resistance resistance, realizes TV voltage dynamic adjustment. This patent circuit framework is simple, is convenient for promote on the TV product.
Description
Technical field
This utility model relates to a kind of circuit changing the output of TV voltage.
Background technology
The built-in CPU of current intelligent television is mostly fixing supply voltage.Along with TV adopts ultrathin design, the CPU speed of service is accelerated in addition, and CPU heating becomes heat important source head in machine.In the contradiction of balance thin design and heating, intelligent television CPU powers and starts to develop to dynamically adjustment direction.
Most of high-grade intelligent televisions, CPU supply module adopts power supply management module able to programme.When using this module, both needed complex software programme-control, and relatively costly.In, low-grade intelligent television use the method to seem cost performance is not enough.
For solving this problem, this patent realizes a kind of simple and practical circuit changing variable voltage output, while cost is not significantly increased, it is achieved this function.
Utility model content
This utility model overcomes the deficiencies in the prior art, it is provided that a kind of circuit changing the output of TV voltage.
Consider the problems referred to above of prior art, an aspect disclosed in this utility model, this utility model by the following technical solutions:
Changing the circuit of TV voltage output, described circuit is applied to the intelligent television that CPU voltage dynamic regulates, comprising:
Supply module and scalable feedback circuit；
Supply module, for carrying voltage to CPU；
Scalable feedback circuit, for dynamically regulating output voltage and the magnitude of voltage after regulating being fed back to supply module；
Described supply module adopts is with degenerative voltage outgoing management chip；
Described scalable feedback circuit includes enhancement mode metal-oxide-semiconductor and resistance.
In order to realize this utility model better, further technical scheme is:
According to an embodiment of the present utility model, described supply module is provided with feedback reception, for receiving the voltage of scalable feedback circuit output.
Further technical scheme: be provided with output filter capacitor between described supply module and the CPU receiving voltage.
Further technical scheme: described enhancement mode metal-oxide-semiconductor is two.
Further technical scheme: described enhancement mode metal-oxide-semiconductor is N-channel.
Compared with prior art, one of the beneficial effects of the utility model are:
The circuit changing the output of TV voltage that this utility model provides, by introducing feedback output, controls metal-oxide-semiconductor grid, changes feedback resistance resistance, it is achieved TV voltage dynamically regulates.This patent circuit architecture is simple, it is simple to promote on tv product.
Accompanying drawing explanation
For 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 to the reference of some embodiments in present specification, for those skilled in the art, when not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the block architecture diagram of circuit described in the utility model.
Fig. 2 illustrates the structural representation of the circuit changing the output of TV voltage according to one embodiment of this utility model.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As shown in Figure 1 and Figure 2, according to an embodiment of the present utility model, a kind of circuit changing the output of TV voltage includes: supply module and scalable feedback circuit.Supply module adopts is with degenerative voltage outgoing management chip；R1 R2 R3 R4 REF1 be resistance, C1 is output filter capacitor；1#MOS 2#MOS adopt enhancement mode N-channel MOS pipe.By controlling metal-oxide-semiconductor grid, change feedback resistance resistance, it is achieved voltage dynamically regulates.
Supply module voltage output formula is VOutput=VREF×(1+REF/REF2), VREFInvariable, REFAnd REF1It is set as fixed resistance value.By controlling 1 and control 2 control 1#MOS pipe and 2#MOS tube grid respectively, R2 and R3 is connected in parallel to REF1, change whole REF2Grounding resistance, it is achieved VOutputThe change of voltage.Wherein, REF2Value be R2, R3 and REF1Resistance value after three resistor coupled in parallel, control 1, control 2 are respectively connected to external level.
VREFConstant is 0.765 volt, C1 value 100 microfarad, REFValue 12 kilohms, REF1Value 22 kilohms, R1 and R4 value 10 kilohms, R2 value 220 kilohms, R3 value 140 kilohms.
(1) when controlling 1 and control 2 respectively high level and high level:
1. controlling 1 is high level, and 1#MOS pipe turns on, and is conducting to ground by R2 resistance；
2. controlling 2 is high level, and 2#MOS pipe turns on, and is conducting to ground by R3 resistance；
3. now REF1R2 parallel connection R3, R in parallelEF2Grounding resistance is 17.5 kilohms, VOutputIt it is 1.290 volts.
(2) when controlling 1 and control 2 respectively low level and high level:
1. controlling 1 is high level, and 1#MOS pipe ends；
2. controlling 2 is high level, and 2#MOS pipe turns on, and is conducting to ground by R3 resistance；
3. now REF1R3, R in parallelEF2Grounding resistance is 19 kilohms, VOutputIt it is 1.248 volts.
(3) when controlling 1 and control 2 respectively high level and low level:
1. controlling 1 is high level, and 1#MOS pipe turns on, and is conducting to ground by R2 resistance；
2. controlling 2 is high level, and 2#MOS pipe ends；
3. now REF1R2, R in parallelEF2Grounding resistance is 20 kilohms, VOutputIt it is 1.224 volts.
(4) when controlling 1 and control 2 respectively low level and low level:
1. controlling 1 is high level, and 1#MOS pipe ends；
2. controlling 2 is high level, and 2#MOS pipe ends；
3. now REF1=REF2, REF2Grounding resistance is 12 kilohms, VOutputIt it is 1.182 volts.
In sum, change control 1 and control 2 high and low level changes, it is achieved 4 groups of combinations, simply realizing supply district 1.182 volts to 1.290 volts.This patent circuit architecture is simple, it is simple to promote on tv product.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, identical similar portion cross-reference between each embodiment.
Than that described above, it can further be stated that, " embodiment ", " another embodiment ", " embodiment " spoken of in this manual etc., refer to the specific features, structure or the feature that describe in conjunction with this embodiment and include at least one embodiment that the application generality describes.Multiple local appearance statement of the same race is not necessarily refer to same embodiment in the description.Furthermore, it is understood that when describing a specific features, structure or 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 reference be made herein to this utility model is described by multiple explanatory embodiment of the present utility model, but, should be appreciated that, those skilled in the art can be designed that a lot of other amendments and embodiment, and these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More specifically, disclosure, drawings and claims scope in, it is possible to building block and/or layout to theme composite configuration carry out multiple modification and improvement.Except the modification that building block and/or layout are carried out and improvement, to those skilled in the art, other purposes also will be apparent from.
Claims (5)
1. the circuit changing the output of TV voltage, it is characterised in that described circuit is applied to the intelligent television that CPU voltage dynamic regulates, comprising:
Supply module and scalable feedback circuit；
Supply module, for carrying voltage to CPU；
Scalable feedback circuit, for dynamically regulating output voltage and the magnitude of voltage after regulating being fed back to supply module；
Described supply module adopts is with degenerative voltage outgoing management chip；
Described scalable feedback circuit includes enhancement mode metal-oxide-semiconductor and resistance.
2. the circuit of change TV voltage according to claim 1 output, it is characterised in that: described supply module is provided with feedback reception, for receiving the voltage of scalable feedback circuit output.
3. the circuit of change TV voltage according to claim 1 output, it is characterised in that: it is provided with output filter capacitor between described supply module and the CPU receiving voltage.
4. the circuit of change TV voltage according to claim 1 output, it is characterised in that: described enhancement mode metal-oxide-semiconductor is two.
5. the circuit of change TV voltage according to claim 4 output, it is characterised in that: described enhancement mode metal-oxide-semiconductor is N-channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620036556.0U CN205375262U (en) | 2016-01-15 | 2016-01-15 | Change TV voltage output's circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620036556.0U CN205375262U (en) | 2016-01-15 | 2016-01-15 | Change TV voltage output's circuit |
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| Publication Number | Publication Date |
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| CN205375262U true CN205375262U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620036556.0U Expired - Fee Related CN205375262U (en) | 2016-01-15 | 2016-01-15 | Change TV voltage output's circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045369A (en) * | 2017-02-07 | 2017-08-15 | 努比亚技术有限公司 | A kind of power circuit, terminal and voltage output method |
| CN108233711A (en) * | 2018-01-16 | 2018-06-29 | 四川安迪科技实业有限公司 | A kind of LNB polarization power supplies power-supplying circuit |
-
2016
- 2016-01-15 CN CN201620036556.0U patent/CN205375262U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045369A (en) * | 2017-02-07 | 2017-08-15 | 努比亚技术有限公司 | A kind of power circuit, terminal and voltage output method |
| CN108233711A (en) * | 2018-01-16 | 2018-06-29 | 四川安迪科技实业有限公司 | A kind of LNB polarization power supplies power-supplying circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 |