CN110442220A - A kind of power control and method for USB-C interface equipment - Google Patents
A kind of power control and method for USB-C interface equipment Download PDFInfo
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- CN110442220A CN110442220A CN201910550010.5A CN201910550010A CN110442220A CN 110442220 A CN110442220 A CN 110442220A CN 201910550010 A CN201910550010 A CN 201910550010A CN 110442220 A CN110442220 A CN 110442220A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
This application discloses a kind of power controls and method for USB-C interface equipment, including USB-C interface, external power source interface, switching module, power supply adjustment module and control module, detect whether USB-C interface and external power source interface have plant-grid connection by control module, and it is switched over by the power supply that switching module accesses USB-C interface and external power source interface, then the electric current of the power supply of access is adjusted according to the different of power input by power supply adjustment module.Since USB-C interface equipment can be adjusted source current according to the difference of power input, USB-C interface equipment is allowed to automatically control the size of USB output electric current, to reduce the risk of adaptive output current, to improve user experience.
Description
Technical field
The present invention relates to the power supply control technology fields of USB-C interface equipment, and in particular to one kind is set for USB-C interface
Standby power control and method.
Background technique
The electric current for the power power-supply that the USB-C interface of the laptop on mainstream market provides at present is 1.5A or with thunder
The electric current for the power power-supply that the USB-C interface of electric 3 functions provides is 3A.It is with the electric current of power power-supply that USB-C interface provides
For 1.5A, when the load of USB-C interface is more than 1.5A electric current, the USB-C interface peripherals equipment of access computer will lead to
Can not work normally, can generally show that electric current is excessive, TYPE-C equipment cannot use, serious to burn out laptop.
For this purpose, preventing from burning out laptop in the prior art using set current limiting technology, i.e. over-current protection device uses PTC
(Positive Temperature Coefficient positive temperature coefficient) mode, is usually used the temperature-sensitive of positive temperature coefficient
Resistance, but have big limitation in actual application, if excessive improve of setting electric current burns computer risk, setting electricity
Flow through small, bearing power becomes smaller and reduces the maximum power of peripheral hardware user experience is made to be deteriorated.Therefore it needs to provide a kind of new
The power control of USB-C interface peripherals equipment, to optimize the power management of USB-C interface equipment.
Summary of the invention
The present invention provides a kind of power control and method for USB-C interface equipment, to optimize in the prior art
To the deficiency of USB-C interface equipment power management.
According in a first aspect, a kind of power control for USB-C interface equipment, comprising:
USB-C interface, for being connect with computer USB-C interface；
External power source interface, the input for external power supply；
Switching module is connect with the USB-C interface and the external power source interface respectively, for passing through the USB-C
Interface and the external power source interface are connect with the power supply of the computer USB-C interface and external power supply respectively, and will be described
The power supply or external power supply of computer USB-C interface export；
Power supply adjusts module, connect with the switching module, for power supply to the computer USB-C interface or described
The electrical parameter of external power supply exports after being adjusted；
Control module, respectively with the external power source interface, the USB-C interface, the switching module and the power supply
Module connection is adjusted, for detecting whether the USB-C interface and the external power source interface have plant-grid connection；
It is described when the computer USB-C interface has power input and the external power source interface does not have power input
Control module be also used to control the switching module by the power supply of the computer USB-C interface export give the power supply adjust mould
Block, and control the power supply adjustment module source current of the computer USB-C interface is adjusted to it is defeated after the first current value
Out to the computer USB-C interface peripherals equipment；
When the external power source interface has power input, the control module is also used to control the switching module for institute
It states external power supply and exports and give power supply adjustment module, and control power supply adjustment module for the electric current tune of the external power supply
Section is output after the second current value to the computer USB-C interface peripherals equipment.
Further, the power supply adjustment module includes voltage-regulating circuit and matrix current adjustment circuit；
The voltage-regulating circuit is connect with the switching module, the computer for exporting to the switching module
The power supply of USB-C interface or the external power supply carry out pressure regulation and export；
The matrix current adjustment circuit is connect with the voltage-regulating circuit, for the computer USB-C after pressure regulation
The electric current of the power supply of interface or the external power supply is adjusted and exports to the computer USB-C interface peripherals equipment.
Further, the control module includes controller；The controller includes the first control output end and the second control
Output end；
First control output end and the second control output end are connect with the switching module, pass through for the controller
One control output end and the second control output end are to the switching module to low and high level signal is sent, to control the switching mould
Block exports the power supply or external power supply of the computer USB-C interface.
Further, the switching module includes switching circuit；The switching circuit includes field-effect tube Q41, field-effect tube
Q42, field-effect tube Q43, field-effect tube Q44, resistance R41, resistance R42, resistance R43 and resistance R44；
The drain electrode of field-effect tube Q41 is connect with the power access end of the USB-C interface；The source electrode of field-effect tube Q41 and
The source electrode of field-effect tube Q42 connects, as the output end of the switching circuit, for by the electricity of the computer USB-C interface
Source or external power supply, which are exported, adjusts module to the power supply；
The grid of field-effect tube Q41 is connect with one end of resistance R41, the other end of resistance R41 and the source of field-effect tube Q43
Pole is connected with one end of resistance R42, and the other end of R42 is connect with the output end of the switching circuit；
The drain electrode of field-effect tube Q42 is connect with the power access end of the external power source interface；The grid of field-effect tube Q42
It is connect with one end of resistance R44, the other end of resistance R44 is connect with one end of the source electrode of field-effect tube Q44 and resistance R43, R43
The other end connect with the output end of the switching circuit；
The grounded drain of field-effect tube Q43, the grid of field-effect tube Q43 is connect with the first control output end and resistance R47
One end connection, resistance R47 the other end ground connection；
The grounded drain of field-effect tube Q44, the grid of field-effect tube Q44 is connect with the second control output end and resistance R48
One end connection, resistance R48 the other end ground connection.
Further, the controller further includes that first voltage detection signal input part and/or second voltage detection signal are defeated
Enter end；
The control module further include:
First voltage detection circuit, the power input with first voltage detection signal input part and the USB-C interface
Connection, for detecting whether the USB-C interface has plant-grid connection；
And/or second voltage detection circuit, the electricity with second voltage detection signal input part and the external power source interface
Source input terminal connection, for detecting whether the external power source interface has plant-grid connection；
The first voltage detection circuit includes resistance R11 and resistance R12；One end of resistance R11 and the USB-C interface
Power access end connection, the other end of resistance R11 and the first voltage detection signal input part and resistance R12 one end connect
It connects, the other end ground connection of resistance R12；
The second voltage detection circuit includes resistance R13 and resistance R14；One end of resistance R13 and the external power supply
The power access end of interface connects, and the one of the other end of resistance R13 and second voltage detection signal input part and resistance R12
End connection, the other end ground connection of resistance R12.
Further, the controller further includes the first discharge signal output end and/or the second discharge signal output end；
The control module further include:
First discharge circuit connect with the power input of the first discharge signal output end and the USB-C interface, is used for
The power supply of the USB-C interface is put by the discharge signal that the first discharge signal output end receives the controller
Electric protection；
And/or second discharge circuit, it is connect with the second discharge signal output end and the power supply of the external power source interface connects
Enter end connection, for receiving the discharge signal of the controller by the second discharge signal output end for the external power supply
The power supply of interface carries out discharge prevention.
First discharge circuit includes resistance R24, resistance R25 and field-effect tube Q21；
One end of resistance R24 is connect with the power input of the USB-C interface, the leakage of the other end and field-effect tube Q21
Pole connection；
The source electrode of field-effect tube Q21 is grounded；
The grid of field-effect tube Q21 is connect with one end of the first discharge signal output end and resistance R25, and resistance R25's is another
One end ground connection；
Second discharge circuit includes resistance R31, resistance R32 and field-effect tube Q31；
One end of resistance R31 is connect with the power input of the external power source interface, and the other end is with field-effect tube Q31's
Drain electrode connection；
The source electrode of field-effect tube Q31 is grounded；
The grid of field-effect tube Q31 is connect with one end of the second discharge signal output end and resistance R32, and resistance R32's is another
One end ground connection.
Further, the controller further includes electric current adjustment control output end, passes through the electric current for the controller
It adjusts control output end and sends low and high level signal to the matrix current adjustment circuit, to control the matrix current adjustment circuit to pressure regulation
The power supply of the computer USB-C interface or the electric current of the external power supply afterwards is adjusted；
The matrix current adjustment circuit includes current control device U51, resistance R14, resistance 15 and field-effect tube Q51；
Current control device U51 includes output end OUT, input terminal IN, ground terminal GND, switch control terminal EN and electric current limit
End ISET processed；
The input terminal IN of current control device U51 and the output end of switch control terminal EN connection and the voltage-regulating circuit
Connection, for the input terminal as the matrix current adjustment circuit；
The ground terminal GND of current control device U51 is grounded；
Output end of the output end OUT of current control device U51 as the matrix current adjustment circuit；
The current limit end ISET of current control device U51 is connect with one end of resistance R52, another termination of resistance R52
Ground；
The current limit end ISET of current control device U51 is also connect with one end of resistance R51, the other end of resistance R51
It is connect with the drain electrode of field-effect tube Q51；
The grid of field-effect tube Q51 is connect with electric current adjustment control output end；
The source electrode of field-effect tube Q51 is grounded.
According to second aspect, a kind of computer USB-C interface peripherals equipment is controlled including power supply described in first aspect and is filled
It sets.
It further, further include USB interface HUB, video conversion module and/or audio conversion module；
The power supply of the USB interface HUB, video conversion module and/or audio conversion module adjust module by the power supply
It provides.
According to the third aspect, a kind of power control method for USB-C interface equipment, comprising:
Whether computer USB-C interface peripherals equipment detection USB-C interface and external power source interface have plant-grid connection；It is described
USB-C interface is connect with computer USB-C interface, the connection of the external power source interface and external power supply；
When detecting that the computer USB-C interface has power input and the external power source interface does not have power input
When, output is to the computer USB-C interface after the source current of the computer USB-C interface is adjusted to the first current value
Peripheral apparatus；
When detecting that the external power source interface has power input, the external source current is adjusted to the second electricity
Output is to the computer USB-C interface peripherals equipment after flow valuve.
It is connect according to a kind of power control and method for USB-C interface equipment of above-described embodiment, including USB-C
Mouth, external power source interface, switching module, power supply adjustment module and control module, by control module detection USB-C interface and outside
It connects whether power interface has plant-grid connection, and is carried out by the power supply that switching module accesses USB-C interface and external power source interface
Switching, then the electric current of the power supply of access is adjusted according to the different of power input by power supply adjustment module.Due to USB-C
Interface equipment can be adjusted source current according to the difference of power input, allow USB-C interface equipment automatic
The size for controlling USB output electric current, to reduce the risk of adaptive output current, to improve user experience.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in a kind of implementation for the power control of USB-C interface equipment；
Fig. 2 is a kind of structural schematic diagram of the control module of power control in implementation；
Fig. 3 is a kind of structural schematic diagram of the USB-C interface of power control in implementation；
Fig. 4 is a kind of external power source interface structural schematic diagram of power control in implementation；
Fig. 5 is a kind of switching module structural schematic diagram of power control in implementation；
Fig. 6 is a kind of structural schematic diagram of the matrix current adjustment circuit of power control in implementation；
Fig. 7 is a kind of structural schematic diagram of the first voltage detection circuit of power control in implementation；
Fig. 8 is a kind of structural schematic diagram of the second voltage detection circuit of power control in implementation；
Fig. 9 is a kind of structural schematic diagram of the first discharge circuit of power control in implementation；
Figure 10 is a kind of structural schematic diagram of the second discharge circuit of power control in implementation；
Figure 11 is the computer USB-C interface peripherals device structure schematic diagram in another embodiment.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can recognize without lifting an eyebrow, part of feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant it is some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
Relevant operation can be completely understood according to the general technology knowledge of description and this field in specification.
It is formed respectively in addition, feature described in this description, operation or feature can combine in any suitable way
Kind embodiment.Meanwhile each step in method description or movement can also can be aobvious and easy according to those skilled in the art institute
The mode carry out sequence exchange or adjustment seen.Therefore, the various sequences in the description and the appended drawings are intended merely to clearly describe a certain
A embodiment is not meant to be necessary sequence, and wherein some sequentially must comply with unless otherwise indicated.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
The power supply current limiting technique of USB-C interface equipment in the prior art is limited using single current value
Stream.
In embodiments of the present invention, detect whether USB-C interface and external power source interface have power supply to connect by control module
Enter, and switched over by the power supply that switching module accesses USB-C interface and external power source interface, then by power supply adjustment module according to
The electric current of the power supply of access is adjusted according to the difference of power input.Since USB-C interface equipment can be defeated according to power supply
Source current is adjusted in the difference for entering end, and USB-C interface equipment is allowed to automatically control the size of USB output electric current,
There is the danger of overcurrent protection to reduce risk and the computer of adaptive output current, to reach protection computer and improve user
Experience.
Embodiment one
Fig. 1 is please referred to, is the structural schematic diagram in a kind of implementation for the power control of USB-C interface equipment, packet
Include control module 10, USB-C interface 20, external power source interface 30, switching module 40 and power supply adjustment module 50.USB-C interface
20 with computer USB-C interface for connecting.External power source interface 30 is used for the input of external power supply.Switching module 40 respectively with
USB-C interface 20 and external power source interface 30 connect, for by USB-C interface 20 and external power source interface 30 respectively with calculating
The power supply of the USB-C interface of machine is connected with external power supply, and the power supply of computer USB-C interface or external power supply are exported.Electricity
Source adjustment module 50 connect with switching module 40, for power supply or external power supply to computer USB-C interface electrical parameter into
Row exports after adjusting.Control module 10 is adjusted with external power source interface 30, USB-C interface 30, switching module 40 and power supply respectively
Module 50 connects, for detecting whether USB-C interface 20 and external power source interface 30 have plant-grid connection.When computer USB-C connects
Mouthfuls 20 have a power input and external power source interface 30 when not having power input, and control module 10 is also used to control switching module 40 will
The power supply of computer USB-C interface, which is exported, adjusts module 50 to power supply, and controls power supply adjustment module 50 and meet computer USB-C
Computer USB-C interface peripherals equipment is given in output after the source current of mouth is adjusted to the first current value.When external power source interface 30
When having power input, control module 10 be also used to control switching module 40 by external power supply export give power supply adjust module 50, and
Control power supply adjustment module 50 gives the current regulation of external power supply to computer USB-C interface peripherals for output after the second current value
Equipment.
It referring to figure 2., is a kind of structural schematic diagram of the control module of power control in implementation, control module includes
Controller, controller include the first control output end GPIO1 and the second control output end GPIO2.First control output end GPIO1
It is connect with the second control output end GPIO2 with switching module 40, passes through the first control output end GPIO1 and for controller 10
Two control output end GPIO2 export computer to switching module 40 to low and high level signal is sent, to control switching module 40
The power supply or external power supply of USB-C interface.In one embodiment, the first control output end GPIO1 is high level signal and the second control
When output end GPIO2 processed is low level, controller 10 controls the power supply that switching module 40 exports computer USB-C interface；First
When control output end GPIO1 is low level signal and the second control output end GPIO2 is high level, the control switching mould of controller 10
Block 40 exports external power supply.
Controller further includes first voltage detection signal input part VBUS_DET1, second voltage detection signal input part
VBUS_DET1, the first discharge signal output end GPIO4, the second discharge signal output end GPIO5 and/or electric current adjustment control are defeated
Outlet GPIO3.In one embodiment, controller further includes control output end GPIO6, control output end GPIO7, control output end
GPIO8 and control output end GPIO9, for connecting controllable USB interface HUB, video conversion module and/or audio conversion module
Deng.In one embodiment, controller further includes data communication end CC1_DRP, data communication end CC2_DRP, data communication end CC1_
The data communications end such as URP, data communication end CC2_URP and data communication terminal D+, data communication end D-.In one embodiment, USB-C
Interface is USB-C male connector, data communication end D+, data communication end D-, data communication end CC1_DRP and the data of control module 10
Communication terminal CC2_DRP with data communication corresponding with the computer USB-C interface end of USB-C interface 20 by connecting, for controlling
Device 10 is communicated with computer USB-C interface, is output port of power source to coordinate the power output end of computer USB-C interface
B4 or output port of power source A4.In one embodiment, external power source interface 30 is USB-C female, the data communication end of controller 10
CC1_URP and data communication terminal CC2_URP interface corresponding with external power supply is connected to coordinate the output end of external power supply.
It referring to figure 3., is a kind of structural schematic diagram of the USB-C interface of power control in implementation, USB-C interface is
USB-C male connector, including output terminals A 1-A12 and output terminals A 1-A12 totally 24 output ports, connect with the USB-C of computer respectively
Mouth connection.In one embodiment, the output terminals A 2 and output terminals A 3 of USB-C interface are connected separately with capacitor C21 and C22, and USB-C connects
The output end B2 and output end B3 of mouth are connected separately with capacitor C23 and C24, output end B5 and the controller 10 of USB-C interface
The CC2_DRP connection of data communication end, and resistance R21 is in series between it.It is worn between the output terminals A 5 and ground connection of USB-C interface
There is capacitor C25.Resistance R23 and resistance R22 is connected on respectively between the output terminals A 8 of USB-C interface and output end B8 and ground connection.
The output end B4 and output terminals A 4 of USB-C interface are connect with an input terminal VBUS of switching module 40, are connect for computer USB-C
The input of the power supply of mouth.
It referring to figure 4., is a kind of external power source interface structural schematic diagram of power control in implementation, external power supply connects
It mouthful is USB-C female, including output terminals A 1-A12 and output terminals A 1-A12 totally 24 output ports.In one embodiment, external electricity
Output terminals A 4, output terminals A 9, output end B4 and the output end B9 of source interface are connect with another input terminal V-W of switching module 40,
For external power supply V-W1, external power supply V-W2, external power supply V-W3 and/or external power supply V-W4 to be inputed to switching module
40.In one embodiment, the output terminals A 5 and output end B5 of external power source interface are grounded respectively, and be in series with respectively capacitor C31 and
Capacitor C32.Output terminals A 1, output terminals A 12, output end B1 and the output end B12 ground connection of external power source interface.
It referring to figure 5., is a kind of switching module structural schematic diagram of power control in implementation, switching module includes cutting
Change circuit.Switching circuit includes field-effect tube Q41, field-effect tube Q42, field-effect tube Q43, field-effect tube Q44, resistance R41, electricity
Hinder R42, resistance R43 and resistance R44.The drain electrode of field-effect tube Q41 is connect with the power access end of USB-C interface, as switching
The input terminal VBUS of circuit.In one embodiment, the drain electrode of field-effect tube Q41 and the output end B4 and output terminals A 4 of USB-C interface
Connection, the input for computer USB-C interface power.The source electrode of field-effect tube Q41 is connected with the source electrode of field-effect tube Q42,
As an output end VBUS-M of switching circuit, for exporting the power supply of computer USB-C interface or external power supply to power supply
Adjust module 50.The grid of field-effect tube Q41 is connect with one end of resistance R41, the other end and field-effect tube Q43 of resistance R41
Source electrode connected with one end of resistance R42, the other end of R42 and the output end VBUS-M connection of switching circuit.Field-effect tube Q42
Drain electrode connect with the power access end of external power source interface 30, another input terminal V-W as switching circuit.One embodiment
In, the drain electrode of field-effect tube Q42 and output terminals A 4, output terminals A 9, output end B4 and the output end B9 connection of external power source interface,
Input for external power supply.The grid of field-effect tube Q42 is connect with one end of resistance R44, and the other end of resistance R44 and field are imitated
Should the source electrode of pipe Q44 connected with one end of resistance R43, the other end of R43 and the output end V-W connection of switching circuit.Field-effect
The grounded drain of pipe Q43, the first control output end GPIO1 connection of the grid and controller of field-effect tube Q43 and resistance R47's
One end connection, the other end ground connection of resistance R47.The grounded drain of field-effect tube Q44, the grid and controller of field-effect tube Q44
The second control output end GPIO2 connection connected with one end of resistance R48, the other end of resistance R48 ground connection.In one embodiment,
Switching circuit further includes capacitor C43 and capacitor C44, and capacitor C43 is connected between resistance 42 and the grid of field-effect tube Q41, electricity
Hold C44 to be connected between resistance 43 and the grid of field-effect tube Q42.In one embodiment, field-effect tube Q41 and field-effect tube Q42
For P-channel metal-oxide-semiconductor, field-effect tube Q43 and field-effect tube Q44 are N-channel MOS pipe.In one embodiment, the first control of controller
Output end GPIO1 be input to switching circuit 40 signal be high level signal when, 40 output end VBUS-M of switching circuit output meter
The power supply of calculation machine USB-C interface.It is high level signal that second control output end GPIO2 of controller, which is input to switching circuit 40,
When, 40 output end VBUS-M of switching circuit exports external power supply.I.e. when the first control output end GPIO1 of controller is high level
When, the power supply that the USB-C interface of computer provides is connected to the output end of switching circuit 40 by field-effect tube Q41 conducting
VBUS-M；When the second control output end GPIO2 of controller is high level, external power supply is connected by field-effect tube Q42 conducting
It is connected to the output end VBUS-M of switching circuit 40.
In one embodiment, the model SM4307PSK of field-effect tube Q41 and field-effect tube Q42, field-effect tube Q43 and field
The model 2N7002 of effect pipe Q44.
In one embodiment, it includes voltage-regulating circuit and matrix current adjustment circuit that power supply, which adjusts module,.Voltage-regulating circuit packet
Include output end and input terminal, the output end VBUS-M connection of input terminal and switching module, output end and matrix current adjustment circuit
Input terminal V-M connection, the power supply or external power supply of the computer USB-C interface for exporting to switching module carry out pressure regulation simultaneously
It exports to matrix current adjustment circuit.Matrix current adjustment circuit is connect with voltage-regulating circuit, for connecing to the computer USB-C after pressure regulation
The power supply of mouth or the electric current of external power supply are adjusted and export and give computer USB-C interface peripherals equipment.In one embodiment, electricity
Pressure adjustment circuit by the power supply of computer USB-C interface or the voltage of external power supply that switching module exports be adjusted to 5V, 3.3V,
The voltage outputs such as 1.8V and/or 1.2V.It is directly USB-C interface through voltage-regulating circuit power supply adjusted in one embodiment
Peripheral apparatus power supply.
Controller includes that electric current adjustment control output end GPIO3 is connect with matrix current adjustment circuit, passes through electricity for controller
Stream adjustment control output end GPIO3 sends low and high level signal to matrix current adjustment circuit, to control matrix current adjustment circuit to pressure regulation
The power supply of computer USB-C interface or the electric current of external power supply afterwards is adjusted.
Fig. 6 is please referred to, is a kind of structural schematic diagram of the matrix current adjustment circuit of power control in implementation, an embodiment
In, matrix current adjustment circuit includes current control device U51, resistance R14, resistance 15 and field-effect tube Q51.Current control device
U51 includes output end OUT, input terminal IN, ground terminal GND, switch control terminal EN and current limit end ISET.Current control device
The input terminal IN of U51 and switch control terminal EN connection are connect with the output end of voltage-regulating circuit, for as electric current adjustment electricity
The input terminal V-M on road.The ground terminal GND of current control device U51 is grounded.The output end OUT of current control device U51 is as electricity
Flow the output end USB-M of adjustment circuit.The current limit end ISET of current control device U51 is connect with one end of resistance R52, electricity
Hinder the other end ground connection of R52.The current limit end ISET of current control device U51 is also connect with one end of resistance R51, resistance
The other end of R51 is connect with the drain electrode of field-effect tube Q51, and the grid of field-effect tube Q51 is connect with electric current adjustment control output end,
The source electrode of field-effect tube Q51 is grounded.In one embodiment, matrix current adjustment circuit further includes capacitor C51, capacitor C52 and capacitor C53,
Capacitor C51 is connected between the output end USB-M of matrix current adjustment circuit and ground, and capacitor C52 and capacitor C53 are connected on electric current adjustment
Between the input terminal V-M and ground of circuit.In one embodiment, the electric current adjustment control output end GPIO3 of controller exports high level
Signal or low level signal keep resistance R51 and resistance R52 in parallel or are not connected in parallel on the current limit end of current control device U51
Between ISET and ground, and then the resistance value between the current limit end ISET and ground of change current control device U51, and then realize defeated
Enter to hold the power supply of V-M to be exported after electric current changes after matrix current adjustment circuit in its output end USB-M.In one embodiment,
Field-effect tube Q51 is N-channel MOS pipe.In one embodiment, the model of current control device U51 is SY6280.
In one embodiment, control module 10 further includes first voltage detection circuit and second voltage detection circuit, the first electricity
Detection circuit and the power input of the first voltage of controller detection signal input part VBUS_DET1 and USB-C interface is pressed to connect
It connects, for detecting whether USB-C interface has plant-grid connection.Second voltage detection circuit and second voltage detect signal input part
VBUS_DET2 is connected with the power input of external power source interface, for detecting whether external power source interface has plant-grid connection.
Please refer to Fig. 7, be a kind of implementation in power control first voltage detection circuit structural schematic diagram, first
Voltage detecting circuit includes resistance R11 and resistance R12, and one end of resistance R11 is as first voltage detection circuit input terminal VBUS
It is connect with the power access end of USB-C interface, the other end and first voltage of resistance R11 detects signal input part VBUS_DET1
It is connected with one end of resistance R12, the other end ground connection of resistance R12.
Please refer to Fig. 8, be a kind of implementation in power control second voltage detection circuit structural schematic diagram, second
Voltage detecting circuit includes resistance R13 and resistance R14, one end of resistance R13 as second voltage detection circuit input terminal V-W with
The power access end of external power source interface connects, and the other end and second voltage of resistance R13 detects signal input part VBUS_DET2
It is connected with one end of resistance R12, the other end ground connection of resistance R12.
In one embodiment, control module 10 further includes the first discharge circuit and the second discharge circuit, the first discharge circuit with
First discharge signal output end GPIO4 is connected with the power input of USB-C interface, for passing through the first discharge signal output end
The power supply of USB-C interface is carried out discharge prevention by the discharge signal that GPIO4 receives controller 10.Second discharge circuit is put with second
Electrical signal GPIO5 connection is connected with the power access end of external power source interface, for being exported by the second discharge signal
The power supply of external power source interface is carried out discharge prevention by the discharge signal for holding GPIO5 to receive controller.
Fig. 9 is please referred to, is a kind of structural schematic diagram of the first discharge circuit of power control in implementation, the first electric discharge
Circuit includes resistance R24, resistance R25 and field-effect tube Q21.Input terminal of the one end of resistance R24 as the first discharge circuit
VBUS is connect with the power input of USB-C interface, and the other end is connect with the drain electrode of field-effect tube Q21, the source of field-effect tube Q21
Pole ground connection, the grid of field-effect tube Q21 are connect with one end of the first discharge signal output end GPIO4 and resistance R25, resistance R25
The other end ground connection.In one embodiment, field-effect tube Q21 is N-channel MOS pipe, model 2N7002.
Figure 10 is please referred to, is a kind of structural schematic diagram of the second discharge circuit of power control in implementation, second puts
Circuit includes resistance R31, resistance R32 and field-effect tube Q31.Input terminal of the one end of resistance R31 as the second discharge circuit
V-W and the power input of external power source interface connect, and the other end is connect with the drain electrode of field-effect tube Q31, field-effect tube Q31's
Source electrode ground connection, the grid of field-effect tube Q31 are connect with one end of the second discharge signal output end GPIO5 and resistance R32, resistance
The other end of R32 is grounded.In one embodiment, field-effect tube Q31 is N-channel MOS pipe, model 2N7002.
A kind of computer USB-C interface peripherals equipment is also disclosed in the embodiment of the present application, including described in the present embodiment
Power control, computer USB-C interface peripherals equipment further includes USB interface HUB, video conversion module and/or sound
Frequency conversion module, wherein the power supply of USB interface HUB, video conversion module and/or audio conversion module are as described in the present embodiment
Power supply adjustment module provide.
A kind of power control method for USB-C interface equipment is also disclosed in the embodiment of the present application, comprising:
Whether computer USB-C interface peripherals equipment detection USB-C interface and external power source interface have plant-grid connection,
In, USB-C interface is connect with computer USB-C interface, the connection of external power source interface and external power supply.
It, will when detecting that the computer USB-C interface has a power input and external power source interface does not have power input
Computer USB-C interface peripherals equipment is given in output after the source current of computer USB-C interface is adjusted to the first current value.
When detecting that external power source interface has power input, external source current is adjusted to defeated after the second current value
Computer USB-C interface peripherals equipment is given out.
A kind of power control and method for USB-C interface equipment according to the present embodiment, passes through control module
Whether detection USB-C interface and external power source interface have plant-grid connection, and are connect by switching module to USB-C interface and external power supply
The power supply of mouthful access switches over, then by power supply adjustment module according to the different power supplys to access of power input electric current into
Row is adjusted.Since USB-C interface equipment can be adjusted source current according to the difference of power input, so that USB-C
Interface equipment can automatically control the size of USB output electric current, to reduce the risk of adaptive output current, to improve user
Experience.
Embodiment two
Figure 11 is please referred to, for the computer USB-C interface peripherals device structure schematic diagram in another embodiment, computer
USB-C interface peripherals equipment includes microprocessor 100, USB-C male connector 200, USB-C female 300, voltage-regulating circuit 410, electricity
Flow adjustment circuit 420, discharge circuit 500 and switching circuit 600.Microprocessor 100 is female with USB-C male connector 200, USB-C respectively
First 300, matrix current adjustment circuit 420, discharge circuit 500 and switching circuit 600 connect.USB-C female 300 is for external power supply
Input, USB-C male connector 200 for being connect with computer USB-C interface 900, switching circuit 600 respectively with USB-C female 300 and
USB-C male connector 200 connects, for by USB-C female 300 and USB-C male connector 200 respectively with the USB-C interface of computer
Power supply is connected with external power supply, and the power supply of computer USB-C interface or external power supply are exported to voltage-regulating circuit 410,
In one embodiment, the voltage range of external power supply is between 5V-20V.Voltage-regulating circuit 410 is for defeated to switching circuit 600
The power supply or external power supply of computer USB-C interface out carry out pressure regulation and export to matrix current adjustment circuit 420, an embodiment
In, voltage-regulating circuit 410 by the voltage of the power supply of computer USB-C interface or external power supply be adjusted to 5V, 3.3V, 1.8V and
It exports after 1.2V and powers to computer USB-C interface peripherals equipment respectively.In one embodiment, voltage-regulating circuit 410 will be adjusted
Pressure is that the power supply of 5V is exported to matrix current adjustment circuit 420, and matrix current adjustment circuit 420 is adjusted the electric current of the power supply of 5V.One
In embodiment, microprocessor 100 detects whether USB-C female 300 and USB-C male connector 200 have plant-grid connection.When USB-C male connector
200 have a power input and USB-C female 300 when not having power input, and microprocessor 100 is also used to control switching circuit 600 will
The power supply of USB-C male connector 200, which is exported, carries out pressure regulation to voltage-regulating circuit 410, and controlling matrix current adjustment circuit 420 will be after pressure regulation
Computer USB-C interface power supply current regulation be the first current value after output give computer USB-C interface peripherals equipment.
When USB-C female 300 has power input, microprocessor 100 is also used to control switching circuit 600 and exports external power supply to electricity
Adjustment circuit 410 is pressed to carry out pressure regulation, and controlling current adjusting module 50 for the current regulation of the external power supply after pressure regulation is second
Computer USB-C interface peripherals equipment is given in output after current value.In one embodiment, computer USB-C interface peripherals equipment is also wrapped
Discharge circuit 500 is included, discharge circuit 500 is under the control of microprocessor 100 for computer USB-C interface peripherals equipment
Overvoltage protection, i.e., the power supply inputted to USB-C female 300 and USB-C male connector 200 are depressured or are discharged.In one embodiment, meter
Calculation machine USB-C interface peripherals equipment further includes the HUB820 and USB interface 810 of USB interface.In one embodiment, USB interface
HUB820 is connected between USB interface 810 and USB-C male connector 200.In one embodiment, the 5V voltage of USB interface 810 is by through electricity
It flows adjustment circuit and electric current power supply offer adjusted is provided.In one embodiment, computer USB-C interface peripherals equipment further includes view
Frequency conversion module 710 and video output interface 720, video conversion module 710 respectively with USB-C male connector 200 and microprocessor 100
Data communication is connected and carries out, video output interface 720 is used for the connection of video conversion module 710 and video display terminal.One
In embodiment, the end CC of USB-C female 300 is connect by the end CC and computer USB-C of microprocessor 100 and USB-C male connector 200
The end the CC connection of mouth 900, is used for reverse power supply.
It will be understood by those skilled in the art that all or part of function of various methods can pass through in above embodiment
The mode of hardware is realized, can also be realized by way of computer program.When function all or part of in above embodiment
When being realized by way of computer program, which be can be stored in a computer readable storage medium, and storage medium can
To include: read-only memory, random access memory, disk, CD, hard disk etc., it is above-mentioned to realize which is executed by computer
Function.For example, program is stored in the memory of equipment, when executing program in memory by processor, can be realized
State all or part of function.In addition, when function all or part of in above embodiment is realized by way of computer program
When, which also can store in storage mediums such as server, another computer, disk, CD, flash disk or mobile hard disks
In, through downloading or copying and saving into the memory of local device, or version updating is carried out to the system of local device, when logical
When crossing the program in processor execution memory, all or part of function in above embodiment can be realized.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (10)
1. a kind of power control for USB-C interface equipment characterized by comprising
USB-C interface, for being connect with computer USB-C interface；
External power source interface, the input for external power supply；
Switching module is connect with the USB-C interface and the external power source interface respectively, for passing through the USB-C interface
It is connect respectively with the power supply of the computer USB-C interface and external power supply with the external power source interface, and by the calculating
The power supply or external power supply of machine USB-C interface export；
Power supply adjusts module, connect with the switching module, for power supply to the computer USB-C interface or described external
The electrical parameter of power supply exports after being adjusted；
Control module is adjusted with the external power source interface, the USB-C interface, the switching module and the power supply respectively
Module connection, for detecting whether the USB-C interface and the external power source interface have plant-grid connection；
When the computer USB-C interface has power input and the external power source interface does not have power input, the control
Module be also used to control the switching module by the power supply of the computer USB-C interface export give the power supply adjust module,
And control power supply adjustment module by the source current of the computer USB-C interface be adjusted to after the first current value output to
The computer USB-C interface peripherals equipment；
When the external power source interface has power input, the control module is also used to control the switching module will be described outer
It connects power supply and exports and give power supply adjustment module, and control power supply adjustment module for the current regulation of the external power supply and be
Output is to the computer USB-C interface peripherals equipment after second current value.
2. power control as described in claim 1, which is characterized in that the power supply adjustment module includes voltage adjustment electricity
Road and matrix current adjustment circuit；
The voltage-regulating circuit is connect with the switching module, the computer USB- for exporting to the switching module
The power supply of C interface or the external power supply carry out pressure regulation and export；
The matrix current adjustment circuit is connect with the voltage-regulating circuit, for the computer USB-C interface after pressure regulation
Power supply or the electric current of the external power supply be adjusted and export to the computer USB-C interface peripherals equipment.
3. power control as claimed in claim 2, which is characterized in that the control module includes controller；The control
Device processed includes the first control output end and the second control output end；
First control output end and the second control output end are connect with the switching module, pass through the first control for the controller
Output end processed and the second control output end are defeated to control the switching module to the switching module to transmission low and high level signal
The power supply or external power supply of the computer USB-C interface out.
4. power control as claimed in claim 3, which is characterized in that the switching module includes switching circuit；It is described
Switching circuit include field-effect tube Q41, field-effect tube Q42, field-effect tube Q43, field-effect tube Q44, resistance R41, resistance R42,
Resistance R43 and resistance R44；
The drain electrode of field-effect tube Q41 is connect with the power access end of the USB-C interface；The source electrode of field-effect tube Q41 and field effect
Should pipe Q42 source electrode connection, as the output end of the switching circuit, for by the power supply of the computer USB-C interface or
External power supply, which is exported, adjusts module to the power supply；
The grid of field-effect tube Q41 is connect with one end of resistance R41, the other end of resistance R41 and the source electrode of field-effect tube Q43 and
One end of resistance R42 connects, and the other end of R42 is connect with the output end of the switching circuit；
The drain electrode of field-effect tube Q42 is connect with the power access end of the external power source interface；The grid and electricity of field-effect tube Q42
One end connection of R44 is hindered, the other end of resistance R44 is connect with one end of the source electrode of field-effect tube Q44 and resistance R43, and R43's is another
One end is connect with the output end of the switching circuit；
The grounded drain of field-effect tube Q43, the grid of field-effect tube Q43 connect with the first control output end and resistance R47 one
End connection, the other end ground connection of resistance R47；
The grounded drain of field-effect tube Q44, the grid of field-effect tube Q44 connect with the second control output end and resistance R48 one
End connection, the other end ground connection of resistance R48.
5. power control as claimed in claim 3, which is characterized in that the controller further includes first voltage detection letter
Number input terminal and/or second voltage detect signal input part；
The control module further include:
First voltage detection circuit, the power input for detecting signal input part and the USB-C interface with first voltage are connect,
For detecting whether the USB-C interface has plant-grid connection；
And/or second voltage detection circuit, the power supply for detecting signal input part and the external power source interface with second voltage are defeated
Enter end connection, for detecting whether the external power source interface has plant-grid connection；
The first voltage detection circuit includes resistance R11 and resistance R12；The electricity of one end of resistance R11 and the USB-C interface
The connection of source incoming end, the other end of resistance R11 are connect with one end that the first voltage detects signal input part and resistance R12,
The other end of resistance R12 is grounded；
The second voltage detection circuit includes resistance R13 and resistance R14；One end of resistance R13 and the external power source interface
Power access end connection, the other end of resistance R13 and the second voltage detection signal input part and resistance R12 one end connect
It connects, the other end ground connection of resistance R12.
6. power control as claimed in claim 3, which is characterized in that the controller further includes that the first discharge signal is defeated
Outlet and/or the second discharge signal output end；
The control module further include:
First discharge circuit is connect, for passing through with the power input of the first discharge signal output end and the USB-C interface
The power supply of the USB-C interface is carried out electric discharge guarantor by the discharge signal that the first discharge signal output end receives the controller
Shield；
And/or second discharge circuit, it is connect with the second discharge signal output end and the power access end of the external power source interface
Connection, for receiving the discharge signal of the controller by the second discharge signal output end for the external power source interface
Power supply carry out discharge prevention.
First discharge circuit includes resistance R24, resistance R25 and field-effect tube Q21；
One end of resistance R24 is connect with the power input of the USB-C interface, and the drain electrode of the other end and field-effect tube Q21 connect
It connects；
The source electrode of field-effect tube Q21 is grounded；
The grid of field-effect tube Q21 is connect with one end of the first discharge signal output end and resistance R25, the other end of resistance R25
Ground connection；
Second discharge circuit includes resistance R31, resistance R32 and field-effect tube Q31；
One end of resistance R31 is connect with the power input of the external power source interface, the drain electrode of the other end and field-effect tube Q31
Connection；
The source electrode of field-effect tube Q31 is grounded；
The grid of field-effect tube Q31 is connect with one end of the second discharge signal output end and resistance R32, the other end of resistance R32
Ground connection.
7. power control as claimed in claim 3, which is characterized in that the controller further includes that electric current adjustment control is defeated
Outlet adjusts control output end by the electric current for the controller and sends low and high level letter to the matrix current adjustment circuit
Number, to control the matrix current adjustment circuit to the power supply of the computer USB-C interface after pressure regulation or the external power supply
Electric current is adjusted；
The matrix current adjustment circuit includes current control device U51, resistance R14, resistance 15 and field-effect tube Q51；
Current control device U51 includes output end OUT, input terminal IN, ground terminal GND, switch control terminal EN and current limit end
ISET；
The output end of the input terminal IN of current control device U51 and switch control terminal EN connection and the voltage-regulating circuit connects
It connects, for the input terminal as the matrix current adjustment circuit；
The ground terminal GND of current control device U51 is grounded；
Output end of the output end OUT of current control device U51 as the matrix current adjustment circuit；
The current limit end ISET of current control device U51 is connect with one end of resistance R52, the other end ground connection of resistance R52；
The current limit end ISET of current control device U51 is also connect with one end of resistance R51, the other end of resistance R51 and field
The drain electrode of effect pipe Q51 connects；
The grid of field-effect tube Q51 is connect with electric current adjustment control output end；
The source electrode of field-effect tube Q51 is grounded.
8. a kind of computer USB-C interface peripherals equipment, which is characterized in that including electricity such as claimed in any one of claims 1 to 6
Source control device.
9. equipment as claimed in claim 8, which is characterized in that further include USB interface HUB, video conversion module and/or audio
Conversion module；
The power supply of the USB interface HUB, video conversion module and/or audio conversion module are provided by power supply adjustment module.
10. a kind of power control method for USB-C interface equipment characterized by comprising
Whether computer USB-C interface peripherals equipment detection USB-C interface and external power source interface have plant-grid connection；The USB-
C interface is connect with computer USB-C interface, the connection of the external power source interface and external power supply；
It, will when detecting that the computer USB-C interface has a power input and the external power source interface does not have power input
Output is to the computer USB-C interface peripherals after the source current of the computer USB-C interface is adjusted to the first current value
Equipment；
When detecting that the external power source interface has power input, the external source current is adjusted to the second current value
After export to the computer USB-C interface peripherals equipment.
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| CN201910550010.5A CN110442220B (en) | 2019-06-24 | 2019-06-24 | Power supply control device and method for USB-C interface equipment |
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| CN201910550010.5A CN110442220B (en) | 2019-06-24 | 2019-06-24 | Power supply control device and method for USB-C interface equipment |
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