CN107272802B - Electronic device - Google Patents
Electronic device Download PDFInfo
- Publication number
- CN107272802B CN107272802B CN201710500544.8A CN201710500544A CN107272802B CN 107272802 B CN107272802 B CN 107272802B CN 201710500544 A CN201710500544 A CN 201710500544A CN 107272802 B CN107272802 B CN 107272802B
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- unit
- electric current
- electronic device
- power supply
- resistance
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- 230000005611 electricity Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Power Sources (AREA)
Abstract
For the present invention about a kind of electronic device, which includes the first functional unit, processing unit, power supply output control unit, first resistor, second resistance, switch unit and power output unit.Processing unit is electrically connected the first functional unit, and sends the first information according to the working condition of the first functional unit；The resistance value of second resistance is less than the resistance value of first resistor；Switch unit is electrically connected processing unit and power supply output control unit, and switch unit receives the first information and first resistor or second resistance are connected to power supply output control unit according to the first information；Power supply output control unit controls power output unit and exports the first electric current or the second electric current, the current value of the current value of the first electric current less than the second electric current；If the first information is yes, switch unit connection first resistor to power supply output control unit, power output unit the first electric current of output；Otherwise connection second resistance to power supply output control unit, power output unit exports the second electric current.
Description
Technical field
The electronics dress of High Output Current is mentioned the present invention relates to a kind of electronic device more particularly to a kind of closing function unit
It sets.
Background technique
Currently, existing have the universal serial bus port (USB) or mobile terminal high-definition audio and video standard (MHL) on the market
The electronic device of interface, the magnitude of current that interface is supplied to external device are usually fixed, as USB2.0 interface is available
Size of current is 900mA, the available size of current 500mA of USB interface.And when the starting current (such as 1A) of external device is big
When fixed value above-mentioned, external device then will start failure, alternatively, user need to increase the device of amplification output electric current to protect
Card smoothly starting, but can all cause that user's is inconvenient for use.
Summary of the invention
To improve above-mentioned user problem inconvenient for use, the present invention provides a kind of electronic device.
Above-mentioned electronic device includes:
First functional unit；
Processing unit, the processing unit are electrically connected first functional unit, and according to the work shape of first functional unit
State sends the first information；
Power supply output control unit；
First resistor, second resistance, the resistance value of the second resistance are less than the resistance value of the first resistor, and the one of the first resistor
End and one end of the second resistance are grounded；
Switch unit, is electrically connected the processing unit and the power supply output control unit, which receives first letter
It ceases and the other end of the other end of the first resistor or the second resistance is connected to by power supply output according to the first information
Control unit；And
Power output unit is electrically connected the power supply output control unit, and it is defeated which controls the power supply
Unit exports the first electric current or the second electric current out, and the current value of first electric current is less than the current value of second electric current；
Wherein, if the first information be it is yes, which connects the first resistor to the power supply output control unit,
The power output unit exports first electric current；If the first information be it is no, the switch unit connect the second resistance to should
Power supply output control unit, the power output unit export second electric current.
As optional technical solution, which is multimedia module group unit.
As optional technical solution, which has USB port and mobile terminal high definition shadow
At least one of sound standard interface.
As optional technical solution, which is projector.
As optional technical solution, which prestores electric current preset value, when to couple this outer for the power output unit
When connection device, which compares the current value and the electric current preset value of power output unit output, if judging the power supply
The current value of output unit output is less than the electric current preset value, which closes first functional unit, wherein this is external
The current value of operating current needed for device starting is the electric current preset value.
It is opened after external device starting if the working current value of the external device is less than as optional technical solution
Streaming current value, the processing unit can be then turned on first functional unit.
As optional technical solution, which is mobile hard disk or set-top box.
As optional technical solution, which is G517AL chip, which is ADG772
Chip.
As optional technical solution, which is 24.9K Ω, and the current value of first electric current is 1A, should
Second resistance resistance value is 11K Ω, and the current value of second electric current is 2.5A.
As optional technical solution, which has SET pin, which has D1 pin, S1A
Pin, S2A pin and IN1 pin, the D1 pin couple the SET pin, which couples the first resistor, the S2A pin
The second resistance is coupled, which couples the processing unit to receive the first information.
Compared with the prior art, electronic device of the invention can ensure that in the case where main system is stablized, can be by the first function
Extra power consumption is supplied to external device use after the closing of energy unit, without because power output unit output is fixed
Current value, and cause the inconvenience in user's use.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1 is the schematic diagram of electronic device of the present invention；
Fig. 2 be electronic device of the present invention in power supply output control unit, switch unit an embodiment schematic diagram.
Specific embodiment
Fig. 1 is the schematic diagram of electronic device of the present invention.Please refer to Fig. 1, electronic device 100 include the first functional unit 110,
Processing unit 120, power supply output control unit 130, first resistor 141, second resistance 142, switch unit 150 and power supply output
Unit 160.
Processing unit 120 is electrically connected the first functional unit 110, and processing unit 120 is according to the first functional unit 110
Working condition sends the first information, and the resistance value of second resistance 142 is less than the resistance value of first resistor 141, one end of first resistor 141
And one end of second resistance 142 is grounded.Switch unit 150 is electrically connected processing unit 120 and power supply output control unit 130,
Switch unit 150 receives the first information and according to the first information by the another of the other end of first resistor 141 or second resistance 142
One end is connected to power supply output control unit 130.160 electric connection of power supply output control unit 130 of power output unit, power supply is defeated
Control unit 130 controls the first electric current of output of power output unit 160 out or the second electric current, the current value of the first electric current are less than
The current value of second electric current.Wherein, if the first information is yes, the connection first resistor 141 of switch unit 150 to power supply output control
Unit 130 processed, power output unit 160 export the first electric current；If the first information is no, second electricity of the connection of switch unit 150
Resistance 142 to power supply output control unit 130, power output unit 160 exports the second electric current.
I.e. when the first functional unit 110 is in off position, power output unit 160 is can be improved in electronic device 100
More power consumptions can be supplied to the external device that power output unit 160 is connect by the electric current of output.That is, electronics
Device 100 can ensure that (closing or temporary close of the first functional unit 110 do not influence entire electronic device in main system stabilization
100 operation) in the case where, power consumption extra after the closing of the first functional unit 110 can be supplied to external device makes
With without and causing the inconvenience in user's use because power output unit 160 exports fixed current value, here not
Just the starting including external device unsuccessfully or needs to increase additional current-amplifying device.
In this present embodiment, electronic device 100 is projector, and the first functional unit 110 is multimedia module group unit, when
So, in other embodiments, electronic device 100 can also be other electronic devices, and the first functional unit 110 can also be other function
Unit, for example, electronic device 100 is car-mounted electronic device, the first functional unit 110 is wireless network transmission unit or heat dissipation
Module group unit.Herein, electronic device 100, the first functional unit 110 without limitation, need to only meet the first functional unit 110
Closing or temporary close will not influence the normal operation of electronic device 100.
In this present embodiment, power output unit 160 has USB port (USB port) and mobile terminal high
At least one of clear audio-visual standard interface (port MHL), port is for being electrically connected above-mentioned external device, for outer tipping
The normal starting and operation set.
In this present embodiment, electronic device 100 realizes the quick of the first functional unit 110 by the way of being automatically closed
It closes.Electronic device 100 also prestores electric current preset value, wherein electric current preset value is operating current needed for external device starting
Current value, in this present embodiment, external device be mobile hard disk or set-top box (such as millet box).When power supply exports list
When member 160 couples external device, processing unit 120 compares the current value and electric current preset value that power output unit 160 exports, if
Judge that the current value that power output unit 160 exports is less than electric current preset value, processing unit 120 closes the first functional unit 110；
And if judge current value that power output unit 160 exports not less than electric current preset value, processing unit 120 does not close the first function
It can unit 110.Whether i.e. electronic device 100 can rapidly determine the closing of the first functional unit 110 according to the actual situation.
Certainly, in other embodiments, the mode manually closed can also be used, i.e. user when accessing external device,
If it was found that it is defeated to improve power output unit 160 that the first functional unit 110 can be closed by hand when external device cannot normally start
Current value out.In this way, electronic device 100 or user can carry out the pass of the first functional unit 110 according to the actual situation
It closes.
In external device starting after, if the working current value of external device be less than starting current value, processing unit 120 or
User can be then turned on the first functional unit 110, certainly, if the closing of the first functional unit 110 does not influence subsequent operation, the
One functional unit 110 can also be constantly in the state of closing, that is, close or 110 end of the first functional unit of temporary close view is practical
Depending on situation.
Fig. 2 be electronic device of the present invention in power supply output control unit, switch unit an embodiment schematic diagram.Please
Referring to Fig. 2, power supply output control unit 130 is G517AL chip, and switch unit 150 is ADG772 chip.G517AL chip tool
There is SET pin, ADG772 chip has D1 pin, S1A pin, S2A pin and IN1 pin, and D1 pin couples SET pin, S1A
Pin couples first resistor 141, and S2A pin couples second resistance 142, and IN1 pin couples processing unit 120 to receive the first letter
Breath.In this present embodiment, 141 resistance value of first resistor is 24.9K Ω, and the current value of the first electric current is 1A, 142 resistance value of second resistance
For 11K Ω, the current value of the second electric current is 2.5A.I.e. ADG772 chip can be selected according to the received first information of IN1 pin
Perhaps D1 pin couples S2A pin so that SET pin is connected to first resistor 141 or the second electricity to D1 pin coupling S1A pin
Resistance 142, G517AL chip control the power output unit 160 of electrical connection again with export different electric currents (such as 1A or
2.5A).The adjustable function of 160 output current value of power output unit can be realized by G517AL chip, ADG772 chip.
In conclusion electronic device of the invention can ensure that in the case where main system is stablized, it can be by the first functional unit
Closing after extra power consumption be supplied to external device use, without because power output unit exports fixed current
Value, and cause the inconvenience in user's use.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
Various corresponding changes and modifications, but these corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art
All it should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of electronic device, which is characterized in that the electronic device includes:
First functional unit；
Processing unit, which is electrically connected first functional unit, and is sent out according to the working condition of first functional unit
Send the first information；
Power supply output control unit；
First resistor, second resistance, the resistance value of the second resistance are less than the resistance value of the first resistor, one end of the first resistor and
One end of the second resistance is grounded；
Switch unit, is electrically connected the processing unit and the power supply output control unit, which receives the first information simultaneously
The other end of the other end of the first resistor or the second resistance is connected to power supply output control according to the first information
Unit；And
Power output unit is electrically connected the power supply output control unit, and it is single which controls power supply output
Member the first electric current of output or the second electric current, the current value of first electric current are less than the current value of second electric current；
Wherein, if the first information be it is yes, which connects the first resistor to the power supply output control unit, the electricity
Source output unit exports first electric current；If the first information be it is no, which connects the second resistance to the power supply
Output control unit, the power output unit export second electric current.
2. electronic device as described in claim 1, which is characterized in that first functional unit is multimedia module group unit.
3. electronic device as described in claim 1, which is characterized in that the power output unit has USB port
And at least one of mobile terminal high-definition audio and video standard interface.
4. electronic device as described in claim 1, which is characterized in that the electronic device is projector.
5. electronic device as described in claim 1, which is characterized in that the electronic device prestores electric current preset value, when the power supply
When output unit couples external device, which compares the current value of power output unit output and the electric current is preset
Value, if judging, the current value of power output unit output is less than the electric current preset value, which closes first function
Unit, wherein the current value of operating current needed for external device starting is the electric current preset value.
6. electronic device as claimed in claim 5, which is characterized in that after external device starting, if the external device
Working current value is less than starting current value, which can be then turned on first functional unit.
7. electronic device as claimed in claim 5, which is characterized in that the external device is mobile hard disk or set-top box.
8. electronic device as described in claim 1, which is characterized in that the power supply output control unit is G517AL chip, should
Switch unit is ADG772 chip.
9. electronic device as claimed in claim 8, which is characterized in that the first resistor resistance value is 24.9K Ω, first electric current
Current value be 1A, which is 11K Ω, and the current value of second electric current is 2.5A.
10. electronic device as claimed in claim 8, which is characterized in that the G517AL chip has SET pin, the ADG772
Chip has D1 pin, S1A pin, S2A pin and IN1 pin, which couples the SET pin, and S1A pin coupling should
First resistor, the S2A pin couple the second resistance, which couples the processing unit to receive the first information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710500544.8A CN107272802B (en) | 2017-06-27 | 2017-06-27 | Electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710500544.8A CN107272802B (en) | 2017-06-27 | 2017-06-27 | Electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107272802A CN107272802A (en) | 2017-10-20 |
| CN107272802B true CN107272802B (en) | 2019-02-12 |
Family
ID=60069570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710500544.8A Expired - Fee Related CN107272802B (en) | 2017-06-27 | 2017-06-27 | Electronic device |
Country Status (1)
| Country | Link |
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| CN (1) | CN107272802B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115604405A (en) * | 2021-06-28 | 2023-01-13 | 苏州佳世达光电有限公司（Cn） | Electronic device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103386B (en) * | 2009-12-22 | 2013-06-19 | 宏碁股份有限公司 | Voltage regulating circuit, voltage regulating method and computer system of voltage regulating circuit |
| CN102183989B (en) * | 2011-04-14 | 2013-03-27 | 上海艾为电子技术有限公司 | Self-adaptive current control device |
| EP2538515A1 (en) * | 2011-06-20 | 2012-12-26 | Dialog Semiconductor GmbH | Multi-input current limited voltage regulator and method thereof |
| CN103576814A (en) * | 2012-07-18 | 2014-02-12 | 鸿富锦精密工业（深圳）有限公司 | Power supply circuit |
| CN104753104A (en) * | 2013-12-30 | 2015-07-01 | 鸿富锦精密工业(武汉)有限公司 | USB charging circuit with current regulating function |
| CN104866052A (en) * | 2014-02-25 | 2015-08-26 | 鸿富锦精密工业（深圳）有限公司 | Power supply system for electronic devices |
| CN106292343B (en) * | 2015-05-19 | 2018-11-20 | 鸿富锦精密工业（深圳）有限公司 | Power supply system of electronic device |
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| CN107272802A (en) | 2017-10-20 |
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Granted publication date: 20190212 |