CN107492934A - A kind of electronic installation with power supply circuit - Google Patents
A kind of electronic installation with power supply circuit Download PDFInfo
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- CN107492934A CN107492934A CN201710846698.2A CN201710846698A CN107492934A CN 107492934 A CN107492934 A CN 107492934A CN 201710846698 A CN201710846698 A CN 201710846698A CN 107492934 A CN107492934 A CN 107492934A
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- 238000009434 installation Methods 0.000 title claims abstract description 26
- 239000004065 semiconductor Substances 0.000 claims description 125
- 230000005611 electricity Effects 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000007600 charging Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a kind of electronic installation with power supply circuit, belongs to electronic technology field, and the power supply circuit includes：External power interface, first switch circuit, second switch circuit, power interface circuit for detecting and output interface, external power interface includes the first external power interface and the second external power interface, in outside the first external power interface of plant-grid connection, external power source is powered through first switch circuit to system power circuit, in outside the second external power interface of plant-grid connection, external power source is powered through second switch circuit to system power circuit, first is accessed simultaneously in external power source, during the second external power interface, external power source is powered through first switch circuit to system power circuit.The electronic installation with power supply circuit of the present invention, its power supply circuit construction is simple, has automatic monitoring function, and single channel or two-way parallel powering can be achieved, and realizes the collaborative work of DC interfaces and the switching of USB Type C interface power supply modes Auto-Sensing.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of electronic installation with power supply circuit.
Background technology
A variety of USB interfaces are currently there are, including：（1）Type-A：Standard edition USB interface, Type-A be we most
A kind of common usb type, is commonly used on computers, and it, which has some prominent questions, has direction requirement, it is necessary to from some
Joint (male mouth) could be inserted interface (female mouth) by specific direction, but because two facial contours of USB public affairs mouths are very close, this
The process of individual insertion often malfunctions；2）Micro-B：The USB standard interface of mobile device, use in Most current Android mobile phone
Be Micro USB interfaces (i.e. USB Micro-B), this interface is still widely used in various Mobile portable formulas so far
In equipment；（3）USB Type-C：Emerging novel USB interface, the interface have size it is small, it is positive and negative can insert, speed it is fast
（10Gb）The advantages that, although Type-C interfaces occur soon, it is contemplated that, with the maturation of USB Type-C technologies, future
Various notebooks, tablet personal computer even smart mobile phone can all start popularize USB Type-C interfaces.And with USB Type-
C popularization, increasing consumer electronics product using USB Type-C interfaces come undertake the charging of system, data transfer,
The functions such as display output.
The content of the invention
It is an object of the invention to provide a kind of electronic installation with power supply circuit, its power supply circuit can be only outer
During portion's the first external power interface of plant-grid connection, external power source is powered through first switch circuit to system power circuit, only
When external power source accesses the second external power interface, external power source is powered through second switch circuit to system power circuit, outside
Portion's power supply accesses the first external power interface and the second external power interface simultaneously when, external power source is through first switch circuit
Power circuit of uniting is powered, and circuit structure is simple, has automatic monitoring function, and single channel or two-way parallel powering can be achieved, realize DC
Interface and the collaborative work of USB Type-C electric supply interface formulas Auto-Sensing switching.
It is as follows that the present invention provides technical scheme：
The invention provides a kind of electronic installation with power supply circuit, the power supply circuit includes：
External power interface, first switch circuit, second switch circuit, power interface circuit for detecting and output interface, it is described outer
Portion's power interface includes the first external power interface and the second external power interface, and for accessing external power source, described first opens
Powered-down road includes the first binary channels metal-oxide-semiconductor, is arranged between the first external power interface and output interface, the second switch electricity
Road includes the second binary channels metal-oxide-semiconductor, is arranged between the second external power interface and output interface, the power interface detecting electricity
Road is arranged between the first external power interface and first, second on-off circuit, and the output interface is used to connect system electricity consumption
Circuit；
External power source, when the second external power interface does not access external power source, described first are accessed in the first external power interface
On-off circuit turns on, and external power source forms path through first switch circuit and output interface, is powered to system power circuit；
External power source, when the first external power interface does not access external power source, second switch are accessed in the second external power interface
Circuit turn-on, external power source form path through second switch circuit and output interface, are powered to system power circuit；
When the first external power interface and the second external power interface access external power source simultaneously, first switch circuit turn-on,
Second switch circuit is closed, and external power source forms path through first switch circuit and output interface, is powered to system power circuit.
According to an embodiment of the present invention, the power interface circuit for detecting includes first via circuit for detecting and the second tunnel
Circuit for detecting, the first via circuit for detecting include the 5th metal-oxide-semiconductor, and the 5th metal-oxide-semiconductor is N-type metal-oxide-semiconductor, the 5th MOS
The grid of pipe connects first external power interface through first resistor, source ground, drains through second resistance and the first electric capacity
The output interface is connected, the second resistance and the first electric capacity are in parallel；Second road circuit for detecting includes the 4th resistance, institute
The grid for stating the second binary channels metal-oxide-semiconductor connects the first external power interface through the 4th resistance.
According to another embodiment of the present invention, the first binary channels metal-oxide-semiconductor and the second binary channels metal-oxide-semiconductor are double P
Type metal-oxide-semiconductor, the first binary channels metal-oxide-semiconductor include the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, and the second binary channels metal-oxide-semiconductor includes the
Three metal-oxide-semiconductors and the 4th metal-oxide-semiconductor.
According to another embodiment of the present invention, the source electrode of the first metal-oxide-semiconductor of first switch circuit connection described the
One external power interface, grid connect the drain electrode of the 5th metal-oxide-semiconductor, and drain electrode connects the drain electrode of second metal-oxide-semiconductor, and described the
The source electrode of second metal-oxide-semiconductor of one on-off circuit connects the output interface, and grid connects the drain electrode of the 5th metal-oxide-semiconductor.
According to another embodiment of the present invention, the first switch circuit also includes a diode, the diode
Negative pole connection first external power interface, drain electrode of the positive pole through the 5th metal-oxide-semiconductor described in 3rd resistor and the second capacitance connection,
The 3rd resistor and the second electric capacity are in parallel.
According to another embodiment of the present invention, the source electrode of the 3rd metal-oxide-semiconductor of second switch circuit connection described the
Two external power interfaces, grid connect the drain electrode of the 4th metal-oxide-semiconductor through the 5th resistance eutral grounding, drain electrode, the 4th metal-oxide-semiconductor
Source electrode connects the output interface, and grid connects the grid of the 3rd metal-oxide-semiconductor.
According to another embodiment of the present invention, first external power interface and the second external power interface are respectively
DC interfaces and USB Type-C interfaces.
According to another embodiment of the present invention, in addition to the 3rd on-off circuit, with the first external power interface of detection
Access state, in outside the first external power interface of plant-grid connection, the conducting of the 3rd on-off circuit, notify the external electrical of system first
Source interface inserts external power source.
According to another embodiment of the present invention, the 3rd on-off circuit includes the 6th metal-oxide-semiconductor, system VCC voltage ends
And state output end, the grid of the 6th metal-oxide-semiconductor connect first external power interface and warp through the 6th resistance respectively
7th resistance eutral grounding, source ground, drain electrode connect the system VCC voltage ends through the 8th resistance respectively and connected through the 9th resistance
Connect the state output end.
According to another embodiment of the present invention, the 6th metal-oxide-semiconductor is N-type metal-oxide-semiconductor.
Beneficial effects of the present invention are as follows：
A kind of electronic installation with power supply circuit of the present invention, its power supply circuit construction is simple, including external power interface, the
One on-off circuit, second switch circuit, power interface circuit for detecting and output interface, pass through first switch circuit and second switch
Circuit is powered to switch the first external power interface and the second external power interface, and the first external electrical is accessed in only external power source
During source interface, external power source is powered through first switch circuit to system power circuit, outside only external power source access second
During power interface, external power source is powered through second switch circuit to system power circuit, is accessed simultaneously outside first in external power source
When portion's power interface and the second external power interface, external power source is powered through first switch circuit to system power circuit, circuit
It is simple in construction, there is automatic monitoring function, single channel or two-way parallel powering can be achieved, the Auto-Sensing that distinct interface can be achieved is cut
The collaboration power supply changed.Increase USB Type-C interfaces on the basis of original DC chargings, it is arbitrarily electric that USB Type-C, DC can be achieved
Source input start, system not power down when open state mono-/bis-road power input switches, USB Type-C enter data-transmission mode
The input power supply of Shi Keyong DC substituting batteries, realize that DC interfaces and USB Type-C electric supply interfaces formula cooperate.The present invention's
A kind of electronic installation with power supply circuit, the loss of its power supply circuit power consumption is low, and the on-off circuit formed using metal-oxide-semiconductor, PCB is accounted for
Low with area, the response time is fast.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the electronic installation with power supply circuit of the present invention；
Fig. 2 is the principle schematic of the embodiment one of the power supply circuit of the electronic installation of the present invention；
Fig. 3 is the principle schematic of the embodiment two of the power supply circuit of the electronic installation of the present invention.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
On the one hand, as shown in figure 1, the invention provides a kind of electronic installation with power supply circuit, power supply circuit includes：
External power interface 10, first switch circuit 20, second switch circuit 30, power interface circuit for detecting 50 and output interface 40,
External power interface includes the first external power interface 11 and the second external power interface 12, for accessing external power source, first
On-off circuit 20 includes the first binary channels metal-oxide-semiconductor 21（Not shown in figure）, it is arranged at the first external power interface 11 and output connects
Between mouth 40, second switch circuit 30 includes the second binary channels metal-oxide-semiconductor 31（Not shown in figure）, it is arranged at the second external power source and connects
Between mouth 12 and output interface 40, power interface circuit for detecting 50 is arranged at the first external power interface 11 and the one 20, second
Between on-off circuit 30, output interface 40 is used to connect system power circuit,
External power source, when the second external power interface does not access external power source, first switch are accessed in the first external power interface
Circuit turn-on, external power source form path through first switch circuit and output interface, are powered to system power circuit；
External power source, when the first external power interface does not access external power source, second switch are accessed in the second external power interface
Circuit turn-on, external power source form path through second switch circuit and output interface, are powered to system power circuit；
When the first external power interface and the second external power interface access external power source simultaneously, the first switch circuit is led
Logical, second switch circuit is closed, and external power source forms path through first switch circuit and output interface, is supplied to system power circuit
Electricity.
A kind of electronic installation with power supply circuit of the embodiment of the present invention, its power supply circuit construction is simple, including outside
Power interface, first switch circuit, second switch circuit, power interface circuit for detecting and output interface, pass through first switch electricity
Road and second switch circuit are powered to switch the first external power interface and the second external power interface, are connect in only external power source
When entering the first external power interface, external power source is powered through first switch circuit to system power circuit, in only external power source
When accessing the second external power interface, external power source is powered through second switch circuit to system power circuit, same in external power source
When accessing the first external power interface and the second external power interface, external power source gives system electricity consumption electricity through first switch circuit
Road powers, and circuit structure is simple, has automatic monitoring function, and single channel or two-way parallel powering can be achieved, and distinct interface can be achieved
Auto-Sensing switching collaboration power supply.
One as the embodiment of the present invention is for example, as illustrated in fig. 1 and 2, the power interface of the embodiment of the present invention is detectd
Slowdown monitoring circuit 50 includes the road circuit for detecting 52 of first via circuit for detecting 51 and second, and wherein first via circuit for detecting 51 includes the 5th
Metal-oxide-semiconductor Q5, the 5th metal-oxide-semiconductor are N-type metal-oxide-semiconductor, the 5th metal-oxide-semiconductor Q5 grid G（1 pin）Outside first resistor R1 connections first
Power interface, source S（2 pin）Ground connection, drain D（3 pin）Through second resistance R2 and the first electric capacity C1 connection output interfaces, the second electricity
It is in parallel to hinder R2 and the first electric capacity C1, the second road circuit for detecting 52 includes the 4th resistance R4, the grid G of the second binary channels metal-oxide-semiconductor（2、
5 pin）Through the 4th resistance R4 the first external power interfaces of connection.
One as the embodiment of the present invention is for example, as shown in Fig. 2 the first binary channels MOS of the embodiment of the present invention
Pipe and the second binary channels metal-oxide-semiconductor are double-P type metal-oxide-semiconductor, and the first binary channels metal-oxide-semiconductor includes the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor
Q2, the second binary channels metal-oxide-semiconductor include the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4.The whole power supply circuit power of the embodiment of the present invention
Low, to be formed using the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor on-off circuit is lost, reduces conducting
When power consumption.
As the embodiment of the present invention another for example, as shown in Fig. 2 the first metal-oxide-semiconductor Q1 of first switch circuit
Source S（1 pin）Connect the first external power interface, grid G（2 pin）Connect the 5th metal-oxide-semiconductor Q5 drain D（3 pin）, leakage
Pole D（The pin of 6 pin/7）Connect the second metal-oxide-semiconductor Q2 drain D（The pin of 8 pin/3）, the second metal-oxide-semiconductor Q2 of first switch circuit source electrode
S（4 pin）Connect output interface, grid G（5 pin）Connect the drain D of the 5th metal-oxide-semiconductor（3 pin）.
The electronic installation of the embodiment of the present invention is formed using the 5th metal-oxide-semiconductor and second resistance R2 and the first electric capacity C1 are in parallel
Loop cause mono-/bis-road power input switch, system not power down.
As the embodiment of the present invention another for example, as shown in Fig. 2 the first switch circuit of the embodiment of the present invention
Also include a diode OR1, diode OR1 negative pole connects the first external power interface, and positive pole is through 3rd resistor R3 and second
The drain D of the metal-oxide-semiconductor of electric capacity C2 connections the 5th（3 pin）, 3rd resistor R3 and the second electric capacity C2 are in parallel.The of the embodiment of the present invention
The diode of one on-off circuit can effectively prevent from leaking electricity.
As the embodiment of the present invention another for example, as shown in Fig. 2 the second switch circuit of the embodiment of the present invention
The 3rd metal-oxide-semiconductor Q3 source S（1 pin）Connect the second external power interface, grid G（2 pin）It is grounded through the 5th resistance R5, leakage
Pole D（The pin of 6 pin/7）Connect the 4th metal-oxide-semiconductor Q4 drain D（The pin of 3 pin/8）, the 4th metal-oxide-semiconductor Q4 source S（4 pin）Connection output connects
Mouthful, grid G（5 pin）Connect the 3rd metal-oxide-semiconductor Q3 grid G（2 pin）.
As the embodiment of the present invention another for example, as shown in Fig. 2 the first external power source of the embodiment of the present invention
Interface and the second external power interface are respectively DC interfaces and USB Type-C interfaces.Electronic installation of the embodiment of the present invention is original
Increase USB Type-C interfaces on the basis of DC chargings, any power input start of USB Type-C, DC, open state can be achieved
System not power down during the power input switching of mono-/bis-road, DC substituting batteries can be used defeated when USB Type-C enter data-transmission mode
Enter power supply, realize that DC interfaces and USB Type-C electric supply interfaces formula cooperate.
First switch circuit and second switch circuit operation are as follows：
When it is DC interfaces that external power source, which accesses the first external power interface, the 5th metal-oxide-semiconductor Q5 grids S is high level, the 5th MOS
Pipe Q5 is turned on, drain D ground connection, and the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 grid G is low level, the first metal-oxide-semiconductor Q1 and second
Metal-oxide-semiconductor Q2 conductings are first switch circuit turn-on；The grid G of 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor is high level, the 3rd metal-oxide-semiconductor and
4th metal-oxide-semiconductor cut-off is that second switch circuit is not turned on, and now external power source passes through DC interfaces and first switch circuit and output
Interface forms path, is powered to system power circuit.
When it is USB Type-C interfaces that external power source, which accesses the second external power interface, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor
Grid G be low level, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor conducting are second switch circuit turn-on；5th metal-oxide-semiconductor Q5 grids S is
Low level, the 5th metal-oxide-semiconductor Q5 cut-offs, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 grid G be high level, the first metal-oxide-semiconductor Q1 with
Second metal-oxide-semiconductor Q2 cut-offs are that first switch circuit is not turned on, and now external power source passes through USB Type-C interfaces and second switch
Circuit forms path with output interface, is powered to system power circuit.
It is DC interfaces and the second external power interface i.e. USB when external power source accesses the first external power interface of access simultaneously
During Type-C interfaces, the 5th metal-oxide-semiconductor Q5 grids S is high level, the 5th metal-oxide-semiconductor Q5 conductings, drain D ground connection, the first metal-oxide-semiconductor Q1 and
Second metal-oxide-semiconductor Q2 grid G is low level, and the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 conductings are first switch circuit turn-on；The
The grid G of three metal-oxide-semiconductors and the 4th metal-oxide-semiconductor is high level, and the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor cut-off are that second switch circuit is not led
Logical, now external power source forms path by DC interfaces and first switch circuit with output interface, is powered to system power circuit.
As the embodiment of the present invention another for example, as shown in figure 3, also including the 3rd on-off circuit 60, with inspection
The access state of the first external power interface is surveyed, in outside the first external power interface of plant-grid connection, the 3rd on-off circuit is led
It is logical, notice system first external power interface insertion external power source.
As the embodiment of the present invention another for example, as shown in figure 3, the 3rd on-off circuit includes the 6th metal-oxide-semiconductor
Q6, system VCC voltage ends and state output end DC_DET_H, the 6th metal-oxide-semiconductor are N-type metal-oxide-semiconductor, the 6th metal-oxide-semiconductor Q6 grid G（1
Pin）It is grounded respectively through the 6th the first external power interface of resistance R6 connections and through the 7th resistance R7, source S（2 pin）Ground connection, leakage
Pole D（3 pin）Respectively through the 8th resistance R8 connections system VCC voltage ends and through the 9th resistance R9 connection status output ends DC_
DET_H.The electronic installation of the embodiment of the present invention can detect whether external power source inserts by the 3rd on-off circuit, be easy to system
Do power configuration so that power supply circuit function more optimizes.
3rd on-off circuit working condition is as follows：
When it is DC interfaces that external power source, which accesses the first external power interface, the 6th metal-oxide-semiconductor Q6 grid G is high level, the 6th
Metal-oxide-semiconductor Q6 is turned on, and now system VCC voltage ends are grounded through the 8th resistance R8, state output end DC_DET_H output low level letters
Number；When external power source does not access the i.e. DC interfaces of the first external power interface, the 6th metal-oxide-semiconductor Q6 grid G is low level, the 6th
Metal-oxide-semiconductor Q6 ends, and now state output end DC_DET_H exports high level signal.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of electronic installation with power supply circuit, it is characterised in that the power supply circuit includes：
External power interface, first switch circuit, second switch circuit, power interface circuit for detecting and output interface, it is described outer
Portion's power interface includes the first external power interface and the second external power interface, and for accessing external power source, described first opens
Powered-down road includes the first binary channels metal-oxide-semiconductor, is arranged between the first external power interface and output interface, the second switch electricity
Road includes the second binary channels metal-oxide-semiconductor, is arranged between the second external power interface and output interface, the power interface detecting electricity
Road is arranged between the first external power interface and first, second on-off circuit, and the output interface is used to connect system electricity consumption
Circuit,
External power source is accessed in first external power interface, when second external power interface does not access external power source,
The first switch circuit turn-on, external power source forms path through the first switch circuit and the output interface, to system
Power circuit is powered；
External power source is accessed in second external power interface, when first external power interface does not access external power source,
The second switch circuit turn-on, external power source forms path through the second switch circuit and the output interface, to system
Power circuit is powered；
When first external power interface and second external power interface access external power source simultaneously, described first opens
Circuit turn-on is closed, the second switch circuit is closed, and external power source is formed through the first switch circuit with the output interface
Path, powered to system power circuit.
2. the electronic installation according to claim 1 with power supply circuit, it is characterised in that the power interface detecting electricity
Road includes first via circuit for detecting and the second road circuit for detecting, and the first via circuit for detecting includes the 5th metal-oxide-semiconductor, and the described 5th
Metal-oxide-semiconductor is N-type metal-oxide-semiconductor, and the grid of the 5th metal-oxide-semiconductor connects first external power interface through first resistor, and source electrode connects
Ground, draining through output interface described in second resistance and the first capacitance connection, the second resistance and the first electric capacity are in parallel, and described the
Two road circuit for detecting include the 4th resistance, and the grid of the second binary channels metal-oxide-semiconductor connects the first external power source through the 4th resistance
Interface.
3. the electronic installation according to claim 2 with power supply circuit, it is characterised in that the first binary channels MOS
Pipe and the second binary channels metal-oxide-semiconductor are double-P type metal-oxide-semiconductor, and the first binary channels metal-oxide-semiconductor includes the first metal-oxide-semiconductor and the 2nd MOS
Pipe, the second binary channels metal-oxide-semiconductor include the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor.
4. the electronic installation according to claim 3 with power supply circuit, it is characterised in that the first switch circuit
The source electrode of first metal-oxide-semiconductor connects first external power interface, and grid connects the drain electrode of the 5th metal-oxide-semiconductor, drain electrode connection
The drain electrode of second metal-oxide-semiconductor, the source electrode of the second metal-oxide-semiconductor of the first switch circuit connect the output interface, and grid connects
Connect the drain electrode of the 5th metal-oxide-semiconductor.
5. the electronic installation according to claim 4 with power supply circuit, it is characterised in that the first switch circuit is also
Including a diode, the negative pole of the diode connects first external power interface, and positive pole is through 3rd resistor and the second electricity
Hold the drain electrode for connecting the 5th metal-oxide-semiconductor, the 3rd resistor and the second electric capacity are in parallel.
6. the electronic installation according to claim 2 with power supply circuit, it is characterised in that the second switch circuit
The source electrode of 3rd metal-oxide-semiconductor connects second external power interface, and grid is through the 5th resistance eutral grounding, drain electrode connection the described 4th
The drain electrode of metal-oxide-semiconductor, the source electrode of the 4th metal-oxide-semiconductor connect the output interface, and grid connects the grid of the 3rd metal-oxide-semiconductor.
7. according to any described electronic installations with power supply circuit of claim 1-6, it is characterised in that outside described first
Portion's power interface and the second external power interface are respectively DC interfaces and USB Type-C interfaces.
8. according to any described electronic installations with power supply circuit of claim 1-6, it is characterised in that also opened including the 3rd
Powered-down road, with the access state of the first external power interface of detection, in outside the first external power interface of plant-grid connection, the 3rd
On-off circuit turns on, notice system first external power interface insertion external power source.
9. the electronic installation according to claim 8 with power supply circuit, it is characterised in that the 3rd on-off circuit bag
The 6th metal-oxide-semiconductor, system VCC voltage ends and state output end are included, the 6th metal-oxide-semiconductor is N-type metal-oxide-semiconductor, the 6th metal-oxide-semiconductor
Grid connects first external power interface and through the 7th resistance eutral grounding, source ground, drain electrode point through the 6th resistance respectively
The system VCC voltage ends are not connected through the 8th resistance and connect the state output end through the 9th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710846698.2A CN107492934B (en) | 2017-09-19 | 2017-09-19 | Electronic device with power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710846698.2A CN107492934B (en) | 2017-09-19 | 2017-09-19 | Electronic device with power supply circuit |
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| Publication Number | Publication Date |
|---|---|
| CN107492934A true CN107492934A (en) | 2017-12-19 |
| CN107492934B CN107492934B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710846698.2A Active CN107492934B (en) | 2017-09-19 | 2017-09-19 | Electronic device with power supply circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023005969A1 (en) * | 2021-07-27 | 2023-02-02 | 广州视源电子科技股份有限公司 | Power supply circuit and electronic device |
Citations (5)
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| CN105680513A (en) * | 2016-02-24 | 2016-06-15 | 北京天诚盛业科技有限公司 | Electronic device with power supply circuit |
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| WO2015131335A1 (en) * | 2014-03-04 | 2015-09-11 | 华为终端有限公司 | Charging circuit and terminal |
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| WO2023005969A1 (en) * | 2021-07-27 | 2023-02-02 | 广州视源电子科技股份有限公司 | Power supply circuit and electronic device |
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| Publication number | Publication date |
|---|---|
| CN107492934B (en) | 2024-01-30 |
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