CN110445385A - Separate television power supply system and separate television - Google Patents
Separate television power supply system and separate television Download PDFInfo
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- CN110445385A CN110445385A CN201910710882.3A CN201910710882A CN110445385A CN 110445385 A CN110445385 A CN 110445385A CN 201910710882 A CN201910710882 A CN 201910710882A CN 110445385 A CN110445385 A CN 110445385A
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4432—Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4436—Power management, e.g. shutting down unused components of the receiver
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of separate television power supply system and separate television, the separate television power supply system includes set-top box power supply module and display module, and the set-top box power supply module includes the first DC-DC circuit, and the display module includes constant current plate；The input terminal of first DC-DC circuit connects the output end of the constant current plate；The output end of first DC-DC circuit connects the input terminal of the constant current plate；First DC-DC circuit, for when receiving the backlight control signal that the constant current plate is sent, exporting corresponding adjusting voltage to the constant current plate.While meeting liquid crystal display power reguirements, due to not needing liquid crystal display itself configuration independent current source power supply, so without configuring a large amount of component in liquid crystal display, and then support liquid crystal display ultrathin design promoting TV good appearance degree.
Description
Technical field
The present invention relates to TV technology more particularly to a kind of separate television power supply system and separate televisions.
Background technique
Increase year by year with the improvement of people's living standards, the popularity rate of China's TV with the development of science and technology, TV
As a kind of common household electrical appliance, huge numbers of families are gradually entered into.
Current TV common on the market has separate television, and separate television is made of liquid crystal display and set-top box two parts, just
Because in this way, existing fission separate television power supply system is designed using dual power supply, i.e. difference is respectively adopted in liquid crystal display and set-top box
Power supply power supply, guarantee the normal work of TV with this.In TV operational process, the power consumption of liquid crystal display is much higher than set-top box
Power consumption a large amount of electrolytic capacitor and transformer etc. are configured in liquid crystal display in order to meet the power demands of liquid crystal display
Component, this power supply system make the liquid crystal display thickness of TV excessive, and also not beautiful enough in appearance.
Summary of the invention
The main purpose of the present invention is to provide a kind of separate television power supply system and separate televisions, it is intended to solve existing
Separate television power supply system in liquid crystal display need to configure a large amount of power supply component so that the excessive technology of liquid crystal display thickness is asked
Topic.
To achieve the above object, the present invention provides a kind of separate television power supply system, the separate television power supply systems
Including set-top box power supply module and display module, the set-top box power supply module includes the first DC-DC circuit, the display mould
Block includes constant current plate；
The input terminal of first DC-DC circuit connects the output end of the constant current plate；First DC-DC circuit it is defeated
Outlet connects the input terminal of the constant current plate；
First DC-DC circuit, for when receiving the backlight control signal that the constant current plate is sent, output to be corresponded to
Adjusting voltage to the constant current plate.
Optionally, first DC-DC circuit includes boost module, sampling module, comparison module, feedback module, voltage
Adjust module and control IC；
The output end of the control IC and the input terminal of boost module connect, the output end of the boost module and the perseverance
The input terminal of flowing plate connects, the output end of the boost module also with the first input end of the sampling module and the feedback
The input terminal of module connection, the control IC is connect with the output end of the feedback module；
The input terminal of the feedback module connects the output end of the comparison module, the input terminal of the comparison module and institute
The output end connection of sampling module is stated, the second input terminal of the sampling module connects the output end of the voltage regulator module,
The input terminal of the voltage regulator module connects the output end of the constant current plate；
The sampling module, for collection voltages adjustment module after adjusting the backlight control signal that the constant current plate is sent
The voltage of corresponding output；
The comparison module, the sampled voltage for obtaining sampling module are compared with predeterminated voltage, and according to than
Relatively result controls the feedback module and sends corresponding feedback signal to the control IC；
The control IC, for receiving the corresponding feedback signal of feedback module transmission, and according to corresponding feedback signal
It controls boost module and exports corresponding adjusting voltage.
Optionally, the boost module includes transformer and first capacitor；
The first end of the transformer connects the first output end of the control IC, the primary line
The second end of circle connects the second output terminal of the control IC, the first end connection of the transformer secondary coil first electricity
The first end of appearance, the second end of the transformer secondary coil connect the second end of the first capacitor, the first capacitor
Second end is also grounded；The first end of the transformer secondary coil also adjusts electricity as the output end output of the boost module
Pressure.
Optionally, the sampling module includes first resistor, second resistance, 3rd resistor and the 4th resistance；
The first end of the first resistor connects the output end of the boost module, the second end connection of the first resistor
The first end of the second resistance；
The second end of the second resistance connects the first end of the 3rd resistor；
The second end of the 3rd resistor connects the first end of the 4th resistance, the 3rd resistor second end also with institute
State the output end connection of the input terminal and the voltage regulator module of comparison module；
The second end of 4th resistance is grounded.
Optionally, the voltage regulator module includes adjustable 5th resistance；
The first end of 5th resistance connects the second input terminal of the sampling module, the second end of the 5th resistance
Connect the output end of the constant current plate.
Optionally, the feedback module includes the 6th resistance, the 7th resistance and photoelectrical coupler；
The first end of 6th resistance connects the output end of the boost module, the second end connection of the 6th resistance
The first end of 7th resistance and the first controlled end of the photoelectrical coupler；
The second end of 7th resistance connects the second controlled end of the photoelectrical coupler, and the second of the 7th resistance
End is also connected with the output end of the comparison module；
The control terminal of the photoelectrical coupler connects the input terminal of the control IC.
Optionally, the comparison module includes voltage regulation unit；
The output end of the voltage regulation unit connects the input terminal of the feedback module, the input terminal connection of the voltage regulation unit
The output end of the sampling module, the ground terminal ground connection of the voltage regulation unit.
Optionally, the comparison module further includes the 8th resistance and the second capacitor；
The first end of 8th resistance connects the output end of the voltage regulation unit and the input terminal of the feedback module, institute
The second end for stating the 8th resistance connects the first end of second capacitor；
Second input terminal of the second end connection sampling module of second capacitor.
Optionally, the comparison module further includes third capacitor；
The first end of the third capacitor connects the first end of the 8th resistance, the second end connection of the third capacitor
The second end of second capacitor.
In addition, to achieve the above object, the present invention also provides a kind of separate television, the separate television includes separate television
Power supply system, the separate television power supply system are configured as separate television power supply system as described above.
The present invention provides a kind of separate television power supply system and separate television, separate television power supply system includes set-top box
Power supply module and display module, set-top box power supply module include the first DC-DC circuit, and display module includes constant current plate；First
The output end of the input terminal connection constant current plate of DC-DC circuit；The input terminal of the output end connection constant current plate of first DC-DC circuit；
First DC-DC circuit, for exporting corresponding adjusting voltage to constant current when receiving the backlight control signal of constant current plate transmission
Plate.By the above-mentioned means, liquid crystal display exports corresponding backlight control signal, set-top box power supply module, that is, exportable corresponding adjusting
Voltage is powered to liquid crystal display, while meeting liquid crystal display power reguirements, due to not needing liquid crystal display itself configuration independent current source
Power supply, so without configuring a large amount of component in liquid crystal display, and then support liquid crystal display ultrathin design promoting TV beautiful outline form
It sees.Further, since can also reduce manufacturing cost without configuring a large amount of component in liquid crystal display.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of separate television power supply system of the present invention；
Fig. 2 is separate television power supply system bulk supply structural schematic diagram of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 10 | First DC-DC circuit | U6 | Photoelectrical coupler |
| 20 | Constant current plate | R6 | 6th resistance |
| 11 | Control IC | R7 | 7th resistance |
| 12 | Boost module | R8 | 8th resistance |
| 13 | Sampling module | C2 | Second capacitor |
| 14 | Voltage regulator module | C3 | Third capacitor |
| 15 | Feedback module | U8 | Voltage regulation unit |
| 16 | Comparison module | 30 | First mainboard |
| T1 | Transformer | 40 | Sequence controller |
| C1 | First capacitor | 50 | First switching circuit |
| R1 | First resistor | 60 | Second DC-DC circuit |
| R2 | Second resistance | 70 | Second switching circuit |
| R3 | 3rd resistor | 80 | Stand-by circuit |
| R4 | 4th resistance | 90 | Second mainboard |
| R5 | 5th resistance | 100 | Pfc circuit |
| AC | AC power source | 110 | Filter circuit |
| 120 | Discharge circuit |
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention provides a kind of separate television power supply system, is applied in separate television.
Referring to Figure 1 and Fig. 2, the separate television power supply system include set-top box power supply module (not indicating) and display
Module (does not indicate), and the set-top box power supply module includes the first DC-DC circuit 10, and the display module includes constant current plate 20；
The input terminal of first DC-DC circuit 10 connects the output end of the constant current plate 20；The output of first DC-DC circuit 10
End connects the input terminal of the constant current plate 20；First DC-DC circuit 10, for receiving what the constant current plate 20 was sent
When backlight control signal, corresponding adjusting voltage is exported to the constant current plate 20.
Set-top box power supply module is connect by supply lines with display module, wherein constant current plate 20 is used for according to display module
First DC-DC circuit 10 of the operation conditions into set-top box power supply module send backlight control signal, the first DC-DC electricity
Road 10 exports corresponding adjusting voltage to constant current plate 20, to power to display module after receiving backlight control signal.It should
Understand, by this present embodiment, display module is directly powered by set-top box power supply module, traditional compared to separate television
Power supply circuit, without configuring the circuit of power conversion in supply lines, therefore the diameter of the supply lines used is smaller, more fine
Carefully, the lightweight of supply lines is realized.
Liquid crystal display exports corresponding backlight control signal, set-top box power supply module, that is, exportable corresponding tune in the present embodiment
It saves voltage to power to liquid crystal display, by the above-mentioned means, liquid crystal display exports corresponding backlight control signal, set-top box power supply module is
Exportable corresponding adjusting voltage is powered to liquid crystal display, while meeting liquid crystal display power reguirements, due to not needing liquid crystal display
Itself configuration independent current source power supply so without configuring a large amount of component in liquid crystal display, and then is supported to set liquid crystal display is ultra-thin
Meter promotes TV good appearance.Further, since can also reduce manufacturing cost without configuring a large amount of component in liquid crystal display.
Further, continuing with referring to Fig. 1, first DC-DC circuit 10 include boost module 12, sampling module 13,
Comparison module 16, feedback module 15, voltage regulator module 14 and control IC11；The output end and boosting mould of the control IC11
The input terminal of block 12 connects, and the output end of the boost module 12 is connect with the input terminal of the constant current plate 20, the boosting mould
The output end of block 12 is also connect with the first input end of the sampling module 13 and the feedback module 15, the control IC11
Input terminal connect with the output end of the feedback module 15；The input terminal of the feedback module 15 connects the comparison module 16
Output end, the input terminal of the comparison module 16 connect with the output end of the sampling module 13, the sampling module 13
Second input terminal connects the output end of the voltage regulator module 14, and the input terminal of the voltage regulator module 14 connects the perseverance
The output end of flowing plate 20；The sampling module 13 is adjusting what the constant current plate 20 was sent for collection voltages adjustment module 14
The voltage of corresponding output after backlight control signal；The comparison module 16, the sampled voltage for obtaining sampling module 13
It is compared with predeterminated voltage, and corresponding anti-to control IC11 transmission according to the comparison result control feedback module 15
Feedback signal；The control IC11, for receiving the corresponding feedback signal of the transmission of feedback module 15, and according to corresponding feedback letter
Number control boost module 12 export corresponding adjusting voltage.
Further, the boost module 12 includes transformer T1 and first capacitor C1；The transformer T1 primary coil
First end connect the first output end of the control IC11, the second end of the transformer T1 primary coil connects the control
The second output terminal of IC11, the first end of the transformer T1 secondary coil connects the first end of the first capacitor C1, described
The second end of transformer T1 secondary coil connects the second end of the first capacitor C1, and the second end of the first capacitor C1 also connects
Ground；The first end of the transformer T1 secondary coil also adjusts voltage as the output end output of the boost module 12.
The transformer T1 primary coil receives the voltage of control IC11 output, and boosts to received voltage, will
Voltage after boosting passes through secondary coil to the output of constant current plate 20, to power to constant current plate 20 as voltage is adjusted.
Further, the sampling module 13 includes first resistor R1, second resistance R2, the electricity of 3rd resistor R3 and the 4th
Hinder R4；The first end of the first resistor R1 connects the output end of the boost module 12, the second end of the first resistor R1
Connect the first end of the second resistance R2；The second end of the second resistance R2 connects the first end of the 3rd resistor R3；
The second end of the 3rd resistor R3 connects the first end of the 4th resistance R4, the 3rd resistor R3 second end also with it is described
The connection of the output end of the input terminal of comparison module 16 and the voltage regulator module 14；The second termination of the 4th resistance R4
Ground.
It should be understood that the collected voltage of sampling module 13 is the backlight control signal that voltage adjusts template output
Voltage, specifically, the sampled voltage is first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 series connection
The voltage exported after partial pressure, calculation formula are as follows:
Wherein, V_LED is the voltage regulator circuit that boost module 12 exports, and R1 is the resistance value of first resistor R1, R2 the
The resistance value of two resistance R2, R3 are the resistance value of 3rd resistor R3, and R4 is the resistance value of the 4th resistance R4.Through the above way to backlight control
The voltage of signal processed is sampled.
Further, the voltage regulator module 14 includes adjustable 5th resistance R5；The first of the 5th resistance R5
End connects the second input terminal of the sampling module 13, and the second end of the 5th resistance R5 connects the output of the constant current plate 20
End.
Preferably, the 5th resistance R5 is adjustable resistance, and constant current plate 20 sends backlight control signal to voltage and adjusts mould
Block 14, after the voltage regulator module 14 receives backlight control signal, by the big minor adjustment backlight for adjusting the 5th resistance R5
Control the voltage of signal.Optionally, the adjustable range of backlight control signal voltage is (0V~2.5V).The present embodiment passes through setting
Voltage regulator module 14, the voltage for the backlight control signal that adjustment constant current plate 20 exports, so that sampling module 13 and comparison module
Voltage difference is generated between 16, and then realizes the adjustment of set-top box power supply module output voltage.
Further, the feedback module 15 includes the 6th resistance R6, the 7th resistance R7 and photoelectrical coupler U6；It is described
The first end of 6th resistance R6 connects the output end of the boost module 12, the second end connection of the 6th resistance R6 described the
First controlled end of the first end of seven resistance R7 and the photoelectrical coupler U6；The second end of the 7th resistance R7 connects institute
The second controlled end of photoelectrical coupler U6 is stated, the second end of the 7th resistance R7 is also connected with the output of the comparison module 16
End；The control terminal of the photoelectrical coupler U6 connects the input terminal of the control IC11.
Above-mentioned feedback module 15 includes photoelectrical coupler U6, and photoelectrical coupler U6 is one using light as media transmission electric signal
Kind of electrical-optical-electrical switching device, is made of light emitting source and light-receiving device two parts, and light emitting source and light-receiving device are assembled in same closed
In shell, and it is isolated to each other with transparent insulator.Comparison module 16 is compared sampled voltage and predeterminated voltage, and with
This conducting photoelectrical coupler U6 sends feedback signal to control IC11.It is easily understood that when sampled voltage and predeterminated voltage it
Between voltage difference it is bigger, then the conduction amount of photoelectrical coupler U6 is bigger.
The present embodiment by the above-mentioned means, using photoelectrical coupler U6 characteristic to control IC11 send feedback signal, from
And output voltage is adjusted in control IC11, so that adjusting voltage meets the current operating status of constant current plate 20.
Further, the comparison module 16 includes voltage regulation unit U8；Described in the output end connection of the voltage regulation unit U8
The input terminal of feedback module 15, the input terminal of the voltage regulation unit U8 connect the output end of the sampling module 13, the pressure stabilizing
The ground terminal of unit U8 is grounded.The comparison module 16 further includes the 8th resistance R8 and the second capacitor C2；8th resistance
The first end of R8 connects the output end of the voltage regulation unit U8 and the input terminal of the feedback module 15, the 8th resistance R8's
Second end connects the first end of the second capacitor C2；The second of the second end connection sampling module 13 of the second capacitor C2 is defeated
Enter end.The comparison module 16 further includes third capacitor C3；The first end of the third capacitor C3 connects the 8th resistance R8
First end, the second end of the third capacitor C3 connects the second end of the second capacitor C2.
It is preset with voltage regulation unit U8 in above-mentioned comparison module 16, optionally, voltage regulation unit U8 is common 431 yuan in power supply
Device, inside include comparator, triode and 2.5V source of stable pressure, the voltage that Voltage stabilizing module exports sampling module 13 with
2.5V voltage in voltage regulation unit U8 is compared, and is controlled feedback module 15 with this and is sent corresponding feedback signal to control
IC11.Specifically, can obtain adjusting the size of voltage according to following formula:
Wherein, V_LED is the voltage regulator circuit that boost module 12 exports, and R1 is the resistance value of first resistor R1, R2 the
The resistance value of two resistance R2, R3 are the resistance value of 3rd resistor R3, and R4 is the resistance value of the 4th resistance R4, and R5 is the resistance of the 5th resistance R5
Value, VFB are the voltage that sampling module 13 exports.
The voltage that sampling module 13 exports is compared by the comparing unit in the present embodiment with predeterminated voltage, to adjust
The entire output voltage of complete machine top box power supply module, so it is easy to understand that the source of stable pressure in above-mentioned voltage regulation unit U8 can also root
Practical application scene according to circuit is the source of stable pressure of other voltage values, and the present embodiment is herein with no restrictions.
Further, in order to more illustrate this programme in detail, referring to Fig. 2, Fig. 2 is separate television power supply system of the present invention
Bulk supply structural schematic diagram.Display module includes the first mainboard 30, sequence controller 40 and constant current plate 20；Set-top box power supply
Module includes filter circuit 110, pfc circuit 100, stand-by circuit 80, the second mainboard 90, the switching of the first DC-DC circuit 10, first
Circuit 50, the second DC-DC circuit 60, the second switching circuit 70 and discharge circuit 120, wherein be the external friendship of filter circuit 110
Galvanic electricity source AC.The output end of filter circuit 110 connects the input terminal of the pfc circuit 100, the first output end of pfc circuit 100
The input terminal of stand-by circuit 80 is connected, the second output terminal of pfc circuit 100 connects the first input end of the second DC-DC circuit 60,
The third output end of pfc circuit 100 connects the first input end of the first DC-DC circuit 10；The first of the stand-by circuit 80 is defeated
Outlet connects the first input end of the second switching circuit 70, and the second output terminal of the stand-by circuit 80 connects the second mainboard 90
First input end；Second input terminal of the second switching circuit 70 connects the first output end of the second mainboard 90, the second switching circuit
70 output end connects the second input terminal of the second DC-DC circuit 60；The output end connection second of second DC-DC circuit 60
Second input terminal of mainboard 90；The second output terminal of second mainboard 90 connects the input terminal of the first switching circuit 50, described
The third output end of second mainboard 90 connects the input terminal of the first mainboard 30；The output end connection the of first switching circuit 50
Second input terminal of one DC-DC circuit 10；The output of the second input terminal connection constant current plate 20 of first DC-DC circuit 10
End, the output end of first DC-DC circuit 10 connect the input terminal of the constant current plate 20；First mainboard 30 also respectively with
Constant current plate 20 and sequence controller 40 connect；The second output terminal of the input terminal of the discharge circuit 120 and the second mainboard 90,
The output end of the discharge circuit 120 connects the third input terminal of first DC-DC circuit 10.
Above-mentioned second mainboard 90 sends trigger signal to described the when detecting the standby enabling signal of user's triggering
Two switching circuits 70 and first switching circuit 50；Above-mentioned second switching circuit 70 after receiving the trigger signal, will be to
The standby voltage that electromechanical road 80 is supplied to the second mainboard 90 is switched to second DC-DC circuit 60 and is supplied to the second mainboard 90
Operating voltage；After receiving the trigger signal, the first DC-DC circuit 10 of control is the constant current to above-mentioned first switching circuit 50
Plate 20 is powered；Above-mentioned discharge circuit 120, for being carried out to first DC-DC circuit 10 when receiving the discharge signal
Electric discharge.
It should be understood that the separate television power supply system bulk supply structure is also configured as other structures, this
Embodiment does not limit the specific power supply structure of power supply system herein.
The present invention also provides a kind of separate television, which includes separate television power supply system, which supplies
The structure of electric system can refer to above-described embodiment, and details are not described herein.Naturally, since the separate television of the present embodiment is adopted
With the technical solution of above-mentioned separate television power supply system, therefore the separate television is all with above-mentioned separate television power supply system
Beneficial effect.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of separate television power supply system, which is characterized in that the separate television power supply system includes set-top box power supply module
And display module, the set-top box power supply module include the first DC-DC circuit, the display module includes constant current plate；
The input terminal of first DC-DC circuit connects the output end of the constant current plate；The output end of first DC-DC circuit
Connect the input terminal of the constant current plate；
First DC-DC circuit, for exporting corresponding tune when receiving the backlight control signal that the constant current plate is sent
Economize on electricity is depressed into the constant current plate.
2. separate television power supply system as described in claim 1, which is characterized in that first DC-DC circuit includes boosting
Module, sampling module, comparison module, feedback module, voltage regulator module and control IC；
The output end of the control IC and the input terminal of boost module connect, the output end of the boost module and the constant current plate
Input terminal connection, the output end of the boost module also with the first input end of the sampling module and the feedback module
The input terminal of connection, the control IC is connect with the output end of the feedback module；
The input terminal of the feedback module connects the output end of the comparison module, and the input terminal of the comparison module is adopted with described
The output end of egf block connects, and the second input terminal of the sampling module connects the output end of the voltage regulator module, described
The input terminal of voltage regulator module connects the output end of the constant current plate；
The sampling module, for collection voltages adjustment module, institute is right after adjusting the backlight control signal that the constant current plate is sent
The voltage that should be exported；
The comparison module, the sampled voltage for obtaining sampling module are compared with predeterminated voltage, and are tied according to comparing
Fruit controls the feedback module and sends corresponding feedback signal to the control IC；
The control IC is controlled for receiving the corresponding feedback signal of feedback module transmission, and according to corresponding feedback signal
Boost module exports corresponding adjusting voltage.
3. separate television power supply system as claimed in claim 2, which is characterized in that the boost module includes transformer and
One capacitor；
The first end of the transformer connects the first output end of the control IC, the transformer
Second end connects the second output terminal of the control IC, and the first end of the transformer secondary coil connects the first capacitor
First end, the second end of the transformer secondary coil connect the second end of the first capacitor, and the second of the first capacitor
End is also grounded；The first end of the transformer secondary coil also adjusts voltage as the output end output of the boost module.
4. separate television power supply system as claimed in claim 2, which is characterized in that the sampling module include first resistor,
Second resistance, 3rd resistor and the 4th resistance；
The first end of the first resistor connects the output end of the boost module, described in the second end connection of the first resistor
The first end of second resistance；
The second end of the second resistance connects the first end of the 3rd resistor；
The second end of the 3rd resistor connects the first end of the 4th resistance, the 3rd resistor second end also with the ratio
It is connected compared with the output end of the input terminal of module and the voltage regulator module；
The second end of 4th resistance is grounded.
5. separate television power supply system as claimed in claim 2, which is characterized in that the voltage regulator module includes adjustable
5th resistance；
The first end of 5th resistance connects the second input terminal of the sampling module, the second end connection of the 5th resistance
The output end of the constant current plate.
6. separate television power supply system as claimed in claim 2, which is characterized in that the feedback module include the 6th resistance,
7th resistance and photoelectrical coupler；
The first end of 6th resistance connects the output end of the boost module, described in the second end connection of the 6th resistance
The first end of 7th resistance and the first controlled end of the photoelectrical coupler；
The second end of 7th resistance connects the second controlled end of the photoelectrical coupler, and the second end of the 7th resistance is also
Connect the output end of the comparison module；
The control terminal of the photoelectrical coupler connects the input terminal of the control IC.
7. such as the described in any item separate television power supply systems of claim 2-6, which is characterized in that the comparison module includes steady
Press unit；
The output end of the voltage regulation unit connects the input terminal of the feedback module, described in the input terminal connection of the voltage regulation unit
The output end of sampling module, the ground terminal ground connection of the voltage regulation unit.
8. separate television power supply system as claimed in claim 7, which is characterized in that the comparison module further includes the 8th resistance
And second capacitor；
The first end of 8th resistance connects the output end of the voltage regulation unit and the input terminal of the feedback module, and described
The second end of eight resistance connects the first end of second capacitor；
Second input terminal of the second end connection sampling module of second capacitor.
9. separate television power supply system as claimed in claim 8, which is characterized in that the comparison module further includes third electricity
Hold；
The first end of the third capacitor connects the first end of the 8th resistance, the second end connection second of the third capacitor
The second end of capacitor.
10. a kind of separate television, which is characterized in that including Split TV set ontology and separate television power supply system, described point
Body TV power supply system is configured as separate television power supply system as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910710882.3A CN110445385A (en) | 2019-07-30 | 2019-07-30 | Separate television power supply system and separate television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910710882.3A CN110445385A (en) | 2019-07-30 | 2019-07-30 | Separate television power supply system and separate television |
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| CN110445385A true CN110445385A (en) | 2019-11-12 |
Family
ID=68432896
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910710882.3A Pending CN110445385A (en) | 2019-07-30 | 2019-07-30 | Separate television power supply system and separate television |
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