CN205692122U - A kind of USB Type C interface circuit and control device thereof - Google Patents

A kind of USB Type C interface circuit and control device thereof Download PDF

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Publication number
CN205692122U
CN205692122U CN201620453552.2U CN201620453552U CN205692122U CN 205692122 U CN205692122 U CN 205692122U CN 201620453552 U CN201620453552 U CN 201620453552U CN 205692122 U CN205692122 U CN 205692122U
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interface
level signal
switch
state
usb type
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刘靖
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Shenzhen Huinengtai Semiconductor Technology Co Ltd
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Shenzhen Huinengtai Semiconductor Technology Co Ltd
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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

Abstract

The open a kind of USB Type C interface circuit of this utility model and control device thereof.Wherein this circuit includes: power circuit, for output the first voltage；Power controller, for and power circuit connect, and export control signal with control power circuit export the first voltage；Microprocessor, it is connected for the first power pins and power controller with USB Type C interface respectively, and when USB Type C interface does not connect equipment, receive the second voltage that the first power pins from USB Type C interface inputs, make USB detection equipment be in holding state by the first Enable Pin output low level signal, make power controller be in holding state by the second Enable Pin output low level signal.This utility model is by turning off the USB detection equipment under ideal case and power controller, and USB detection equipment and power controller were without constantly work in 24 hours, thus reduced whole circuit standby power consumption.

Description

A kind of USB Type-C interface circuit and control device thereof
Technical field
This utility model relates to USB technical field, particularly relates to a kind of USB Type-C interface circuit and controls device.
Background technology
USB tissue discloses novel USB interface i.e. USB Type-C interface.This novel USBType-C connects Mouth compares old-fashioned USBType-A interface and USBType-B interface has the following characteristics that 1, interface size is the thinnest less；2, number According to transmission speed faster；3, through-put power ability is higher；4, positive anti-plug is supported.
Refer to the schematic diagram that Fig. 1, Fig. 1 are the interface definition of USBType-C socket.As it is shown in figure 1, this interface divides two Row, each row all has 12 signal pins.Wherein having 4 power pins is all the power supply VBUS of USB, respectively A4, B4, A9 and B9.Additionally having 4 grounding pins is all the ground GND, respectively A1, B1, A12 and B12 of USB.Two different USBType-C insert Coupled together by Type-C connecting line between Zuo.A Type-C plug is had respectively at the connecting line two ends of Type-C.USB A4, B4, A9 and B9 pin in Type-C plug is joined together in connecting line, and A1 in USB Type-C plug, B1, A12 and B12 pin is also joined together in connecting line.It addition, USB Type-C socket also has CC1 and CC2 these two to draw Foot is respectively intended to do the detection of Type-C interface, is used for judging the information such as the direction that equipment connects, and the type of equipment.
Utility model people, during realizing this utility model, finds that prior art at least there is problems in that generally The equipment supporting this interface is required for a special USB Type-C interface controller to detect the plugging condition of interface, uses Identify whether equipment inserts or pull out, and the type of equipment.In order to realize this function, this USB Type-C Interface Controller Device needs the detection being continued for.Even if not having equipment to insert, USB Type-C interface controller also want 24 hours always Line detects, and this can increase the stand-by power consumption of USB Type-C interface controller undoubtedly.In view of mobile device when the overwhelming majority Between be all to be powered by built-in battery, the standby current of system own is had and compares strict requirements.From mobile USB system Energy Angle consider, these electric currents additionally consumed standby when all be need eliminate.
Utility model content
In order to overcome above-mentioned technical problem, this utility model purpose aim to provide a kind of USB Type-C interface circuit and Control device, with solve existing USB Type-C interface circuit or control device under ideal case, there is the technology that power consumption is high Problem.
For solving above-mentioned technical problem, this utility model embodiment offer techniques below scheme:
In first aspect, this utility model embodiment provides a kind of USB Type-C interface circuit, and described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit Export described first voltage；
Microprocessor, for being connected with the first power pins and the described power controller of USB Type-C interface respectively, And when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface Second voltage of input, makes USB detection equipment be in holding state, by second by the first Enable Pin output low level signal Enable Pin output low level signal makes described power controller be in holding state；Wherein, described second voltage is described external When equipment extracts USB Type-C interface, the first power pins is low level signal that is that input described microprocessor because of unsettled.
Alternatively, described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the second source pin of described USB Type-C interface, the 3rd Power pins, the 4th power pins and described microprocessor connect；Described second switch respectively with described power circuit, described Microprocessor, the first grounding pin, the second grounding leg, the 3rd grounding pin and the 4th ground connection of described USB Type-C interface Pin connects；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from described USB First voltage of the first power pins input of Type-C interface, by the 3rd Enable Pin output low level signal, by described the The closure state of one switch switches to off-state；Described microprocessor exports high level signal by described by the 4th Enable Pin The off-state of second switch switches to closure state, makes described USB detection set by the first Enable Pin output high level signal For starting to detect described external equipment；Described USB detection is after equipment identifies described external equipment, and described microprocessor is by the Two Enable Pin output high level signals make described power controller start working, will by the 3rd Enable Pin output high level signal The off-state of described first switch switches to closure state；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C Second voltage of the first power pins input of interface, and by the 3rd Enable Pin output low level signal, by described first The closure state of switch switches to off-state；After switching off described first, described microprocessor is by the first enable End output low level signal makes described USB detection equipment be in holding state, is made by the second Enable Pin output low level signal Described power controller is in holding state, by the 4th Enable Pin output low level signal by the closed form of described second switch State switches to off-state；After being disconnected by described second switch, described microprocessor is by the 3rd Enable Pin output high level The off-state of described first switch is switched to closure state by signal.
In second aspect, this utility model embodiment provides a kind of USB Type-C interface circuit, and described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit Export described first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interface, second source pin and described Power controller connects, and when USB Type-C interface does not connect external equipment, receives and connect from described USB Type-C First power pins of mouth or the second voltage of second source pin input, made by the first Enable Pin output low level signal USB detection equipment is in holding state, makes described power controller be in by the second Enable Pin output low level signal standby State；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, the first power pins or the second electricity Source pin is low level signal that is that input described microprocessor because of unsettled.
Alternatively, described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 3rd power pins of described USB Type-C interface, the 4th Power pins and described microprocessor connect；Described second switch respectively with described power circuit, described microprocessor, described First grounding pin of USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from described USB First power pins of Type-C interface or the first voltage of second source pin input, export low electricity by the 3rd Enable Pin Ordinary mail number, switches to off-state by the closure state of described first switch；Described microprocessor is exported by the 4th Enable Pin The off-state of described second switch is switched to closure state by high level signal, by the first Enable Pin output high level signal Described USB detection equipment is made to start to detect described external equipment；After described USB detection equipment identifies described external equipment, institute Stating microprocessor makes described power controller start working, by the 3rd Enable Pin by the second Enable Pin output high level signal The off-state of described first switch is switched to closure state by output high level signal；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C First power pins of interface or the second voltage of second source pin input, and believed by the 3rd Enable Pin output low level Number, the closure state of described first switch is switched to off-state；After switching off described first, described microprocessor Make described USB detection equipment be in holding state by the first Enable Pin output low level signal, exported by the second Enable Pin Low level signal makes described power controller be in holding state, by the 4th Enable Pin output low level signal by described second The closure state of switch switches to off-state；After being disconnected by described second switch, described microprocessor is by the 3rd enable The off-state of described first switch is switched to closure state by end output high level signal.
In the third aspect, this utility model embodiment provides a kind of USB Type-C interface circuit, and described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit Export described first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interface, second source pin, the 3rd power supply Pin and described power controller connect, and when USB Type-C interface does not connect external equipment, receive from described First power pins of USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, by the One Enable Pin output low level signal makes USB detection equipment be in holding state, by the second Enable Pin output low level signal Described power controller is made to be in holding state；Wherein, described second voltage is that described external equipment is extracted USB Type-C and connect During mouth, the first power pins or second source pin or the 3rd power pins be low electricity that is that input described microprocessor because of unsettled Ordinary mail number.
Alternatively, described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 4th power pins of described USB Type-C interface and institute State microprocessor to connect；Described second switch respectively with described power circuit, described microprocessor, described USB Type-C interface The first grounding pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from described USB The first voltage that first power pins of Type-C interface or second source pin or the 3rd power pins input, makes by the 3rd Energy end output low level signal, switches to off-state by the closure state of described first switch；Described microprocessor is by the The off-state of described second switch is switched to closure state by four Enable Pin output high level signals, defeated by the first Enable Pin Going out high level signal makes described USB detection equipment start to detect described external equipment；Described USB detection equipment identify described outside After connecing equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, logical Cross the 3rd Enable Pin output high level signal and the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C The second voltage that first power pins of interface or second source pin or the 3rd power pins input, and by the 3rd enable End output low level signal, switches to off-state by the closure state of described first switch；It is switched off by described first After, described microprocessor makes described USB detection equipment be in holding state by the first Enable Pin output low level signal, passes through Second Enable Pin output low level signal makes described power controller be in holding state, by the 4th Enable Pin output low level The closure state of described second switch is switched to off-state by signal；After described second switch is disconnected, described micro-process The off-state of described first switch is switched to closure state by the 3rd Enable Pin output high level signal by device.
In fourth aspect, this utility model embodiment provides a kind of USB Type-C interface control unit, described device bag Include:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit Export described first voltage；
Type-C interface controller, for the first detection pin and the second detection pin with USB Type-C interface even Connect, and detect external equipment；
Microprocessor, for being connected with the first power pins and the described power controller of USB Type-C interface respectively, And when USB Type-C interface does not connect external equipment, receive the first power pins from described USB Type-C interface Second voltage of input, makes described Type-C interface controller be in standby shape by the first Enable Pin output low level signal State, makes described power controller be in holding state by the second Enable Pin output low level signal；Wherein, described second voltage When extracting USB Type-C interface for described external equipment, the first power pins is that input described microprocessor low because of unsettled Level signal.
Alternatively, described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the second source pin of described USB Type-C interface, the 3rd Power pins, the 4th power pins and described microprocessor connect；Described second switch respectively with described power circuit, described Microprocessor, the first grounding pin, the second grounding leg, the 3rd grounding pin and the 4th ground connection of described USB Type-C interface Pin connects；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from described USB First voltage of the first power pins input of Type-C interface, by the 3rd Enable Pin output low level signal, by described the The closure state of one switch switches to off-state；Described microprocessor exports high level signal by described by the 4th Enable Pin The off-state of second switch switches to closure state, makes described Type-C interface by the first Enable Pin output high level signal Controller starts to detect described external equipment；After described Type-C interface controller identifies described external equipment, described micro-place Reason device makes described power controller start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output height The off-state of described first switch is switched to closure state by level signal；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C Second voltage of the first power pins input of interface, and by the 3rd Enable Pin output low level signal, by described first The closure state of switch switches to off-state；After switching off described first, described microprocessor is by the first enable End output low level signal makes described Type-C interface controller be in holding state, is believed by the second Enable Pin output low level Number described power controller is made to be in holding state, by the 4th Enable Pin output low level signal closing described second switch Conjunction state switches to off-state；After being disconnected by described second switch, described microprocessor is by the 3rd Enable Pin output height The off-state of described first switch is switched to closure state by level signal.
At the 5th aspect, this utility model embodiment provides a kind of USB Type-C interface control unit, described device bag Include:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit Export described first voltage；
Type-C interface controller, for the first detection pin and the second detection pin with USB Type-C interface even Connect, and detect external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interface, second source pin and described Power controller connects, and when USB Type-C interface does not connect external equipment, receives and connect from described USB Type-C First power pins of mouth or the second voltage of second source pin input, made by the first Enable Pin output low level signal Type-C interface controller is in holding state, makes described power controller be in by the second Enable Pin output low level signal Holding state；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, the first power pins or Two power pins are low level signal that is that input described microprocessor because of unsettled.
Alternatively, described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 3rd power pins of described USB Type-C interface, the 4th Power pins and described microprocessor connect；Described second switch respectively with described power circuit, described microprocessor, described First grounding pin of USB Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from described USB First power pins of Type-C interface or the first voltage of second source pin input, by the 3rd Enable Pin output low level Signal, switches to off-state by the closure state of described first switch；Described microprocessor is by the 4th Enable Pin output height The off-state of described second switch is switched to closure state by level signal, is made by the first Enable Pin output high level signal Described Type-C interface controller starts to detect described external equipment；Described Type-C interface controller identifies described external set After Bei, described microprocessor makes described power controller start working, by the by the second Enable Pin output high level signal The off-state of described first switch is switched to closure state by three Enable Pin output high level signals；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type- First power pins of C interface or the second voltage of second source pin input, and by the 3rd Enable Pin output low level Signal, switches to off-state by the closure state of described first switch；After switching off described first, described micro-process Device makes described Type-C interface controller be in holding state by the first Enable Pin output low level signal, enables by second End output low level signal makes described power controller be in holding state, by the 4th Enable Pin output low level signal by institute The closure state stating second switch switches to off-state；After being disconnected by described second switch, described microprocessor is by the The off-state of described first switch is switched to closure state by three Enable Pin output high level signals.
At the 6th aspect, this utility model embodiment provides a kind of USB Type-C interface control unit, described device bag Include:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control described power circuit Export described first voltage；
Type-C interface controller, for the first detection pin and the second detection pin with USB Type-C interface even Connect, and detect external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interface, second source pin, the 3rd power supply Pin and described power controller connect, and when USB Type-C interface does not connect external equipment, receive from described First power pins of USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, by the One Enable Pin output low level signal makes Type-C interface controller be in holding state, by the second Enable Pin output low level Signal makes described power controller be in holding state；Wherein, described second voltage is that described external equipment extracts USB Type- During C interface, described microprocessor is inputted by the first power pins or second source pin or the 3rd power pins because of unsettled Low level signal.
Alternatively, described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 4th power pins of described USB Type-C interface and institute State microprocessor to connect；Described second switch respectively with described power circuit, described microprocessor, described USB Type-C interface The first grounding pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives from described USB The first voltage that first power pins of Type-C interface or second source pin or the 3rd power pins input, by the 3rd Enable Pin output low level signal, switches to off-state by the closure state of described first switch；Described microprocessor passes through The off-state of described second switch is switched to closure state, by the first Enable Pin by the 4th Enable Pin output high level signal Output high level signal makes described Type-C interface controller start to detect described external equipment；Described Type-C interface controller After identifying described external equipment, described microprocessor makes described power controller by the second Enable Pin output high level signal Start working, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C The second voltage that first power pins of interface or second source pin or the 3rd power pins input, and by the 3rd enable End output low level signal, switches to off-state by the closure state of described first switch；It is switched off by described first After, described microprocessor makes described Type-C interface controller be in standby shape by the first Enable Pin output low level signal State, makes described power controller be in holding state by the second Enable Pin output low level signal, defeated by the 4th Enable Pin Go out low level signal and the closure state of described second switch is switched to off-state；After described second switch is disconnected, institute State microprocessor, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state.
In this utility model embodiment, when USB Type-C interface does not connect external equipment, microprocessor receives From the second voltage of the first power pins input of described USB Type-C interface, by the first Enable Pin output low level signal Make USB detection equipment be in holding state, make described power controller be in by the second Enable Pin output low level signal and treat Machine state, thus solve existing USB Type-C interface circuit under ideal case, there is the technical problem that power consumption is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the interface definition of USBType-C socket；
Fig. 2 is the theory diagram of a kind of USB Type-C interface circuit that this utility model embodiment one provides；
Fig. 2 a is the theory diagram of a kind of USB Type-C interface circuit that this utility model embodiment one provides；
Fig. 3 is the structural representation of a kind of USB Type-C interface circuit that this utility model embodiment provides；
Fig. 4 is the sequential chart during external equipment grafting USB Type-C interface of this utility model embodiment one offer；
Fig. 5 is the external equipment that this utility model embodiment one provides sequential chart when extracting USB Type-C interface；
Fig. 6 is the structural representation of a kind of USB Type-C interface circuit that this utility model embodiment two provides；
Fig. 7 is the structural representation of a kind of USB Type-C interface circuit that this utility model embodiment three provides；
Fig. 8 is the structural representation of a kind of USB Type-C interface control unit that this utility model embodiment four provides；
Fig. 9 is the structural representation of a kind of USB Type-C interface control unit that this utility model embodiment five provides；
Figure 10 is the structural representation of a kind of USB Type-C interface control unit that this utility model embodiment six provides.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain this Utility model, is not used to limit this utility model.
Embodiment one
Refer to the principle frame that Fig. 2, Fig. 2 are a kind of USB Type-C interface circuits that this utility model embodiment one provides Figure.As in figure 2 it is shown, this USB Type-C interface circuit 20 is connected by USB Type-C interface 21 and external equipment 22, and External equipment 23 is detected by controlling USB detection equipment 23.Concrete, USB detection equipment 23 respectively with USB Type-C interface The first detection pin CC1 and the second detection pin CC2 of 21 connect, and are drawn by the first detection pin CC1 and the second detection Foot CC2 identifies type or the direction of insertion of external equipment 23.External equipment 23 herein includes connecing with USB Type-C The charger of mouth, smart mobile phone, intelligent sound, intelligent television, desktop computer, panel computer, Intelligent bracelet, intelligent watch etc. Equipment.
It is a kind of USB Type-C interface that this utility model embodiment one provides please also refer to Fig. 2 and Fig. 2 a, Fig. 2 a The theory diagram of circuit.As shown in Figure 2 a, this USB Type-C interface circuit 20 includes:
Power circuit 201, for output the first voltage；
Power controller 202, for connecting with power circuit 201, and exports control signal to control power circuit 201 Export described first voltage；
Microprocessor 203, for respectively with the first power pins B9 of USB Type-C interface and power controller 202 even Connect, and when external equipment extracts USB Type-C interface, receive the first power pins B9 input from USB Type-C interface The second voltage 204, make USB detection equipment 205 be in holding state by the first Enable Pin EN1 output low level signal, logical Crossing the second Enable Pin EN2 output low level signal makes power controller 202 be in holding state；Wherein, described second voltage is When described external equipment extracts USB Type-C interface, described microprocessor 203 is inputted by the first power pins B9 because of unsettled Low level signal.
In the present embodiment, first Enable Pin EN1 output low level signal make USB detection equipment be in holding state and The low level signal of the second Enable Pin EN2 output makes power controller 202 be in holding state to be useful signal, certainly, also may be used It is in holding state or power controller 202 is in the signal of holding state and has for high level signal USB being detected equipment Effect, be not limited to the form of useful signal herein, as long as output signal can make USB detection equipment be in holding state and Power controller 202 is in holding state, and can implement in conjunction with the content that the present embodiment is instructed and guided, it should fall into this practicality In novel protection domain.
Microprocessor herein can also is that general processor, digital signal processor (DSP), special IC (ASIC), field programmable gate array (FPGA) or other PLD, discrete gate or transistor logic, discrete hard Part assembly or any combination of these parts.Further, microprocessor herein can be any conventional processors, controller, Microcontroller or state machine.Microprocessor can also be implemented as the combination of calculating equipment, such as, DSP and the group of microprocessor Conjunction, multi-microprocessor, one or more microprocessor combine DSP core or other this configuration any.
In the present embodiment, when external equipment extracts USB Type-C interface, microprocessor 203 is according to USB Type-C Second voltage of the first power pins B9 input of interface, the second voltage herein is that external equipment extracts USB Type-C interface Time, the first power pins is low level signal that is that input described microprocessor because of unsettled.Microprocessor 203 is sentenced by logic Disconnected, analyze " external equipment non-grafting USB Type-C interface ", then made by the first Enable Pin EN1 output low level signal USB detection equipment is in holding state, makes power controller 202 be in by the second Enable Pin EN2 output low level signal and treats Machine state, makes USB detection equipment 204 or power controller 202 within 24 hours, need not the most fully detect the work of port, thus It is substantially reduced the stand-by power consumption of equipment.
Refer to the knot that Fig. 3, Fig. 3 are a kind of USB Type-C interface circuits that this utility model embodiment provides Structure schematic diagram.As it is shown on figure 3, this circuit include power circuit 31, power controller 32, microprocessor 33, first switch S1, the Two switch S2 and resistance R.First switch S1 respectively with power circuit 31, the second source pin A9 of USB Type-C interface, 3rd power pins B4, the 4th power pins A4 and microprocessor 33 connect, second switch S2 respectively with power circuit 31, micro- Processor 33, the first grounding pin A1 of USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and the 4th Grounding pin B12 connects.
In the present embodiment, microprocessor 33 includes four Enable Pins and with reference to earth terminal, the first Enable Pin EN1 and USB Detection equipment 34 connects, and the second Enable Pin EN2 and power controller 32 connect, and the 3rd Enable Pin EN3 and the first switch S1 connect And can control the first switch S1 is opened or closed state, the 4th Enable Pin EN4 and second switch S2 connect and permissible Control the state that is opened or closed of second switch S2, with reference to earth terminal GND_BAT ground connection.
In the present embodiment, power circuit 31 includes the first body two of battery V1, inductance L1, NPN field effect transistor Q1 Pole pipe D1, NPN field effect transistor Q1, the second body diode D2 of the 2nd NPN field effect transistor Q2, the 2nd NPN field effect transistor Q2 And one end of the positive pole of electric capacity C1, battery V1 and inductance L1 connects, the other end respectively with the first body diode D1 of inductance L1 Positive pole, the second body diode D2 negative pole connect, the negative pole of the first body diode D1 by first switch S1 and USB Type- The second source pin A9 of C interface, the 3rd power pins B4, the 4th power pins A4 connect, and the first body diode D1 Negative pole passes through electric capacity C1 ground connection, and the negative pole of the Anode and battery V1 of the second body diode D2 connects, and the negative pole of battery V1 leads to Cross second switch S2 and the first grounding pin A1 of USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 and 4th grounding pin B12 connects.First body diode D1 is parallel to drain electrode and the two ends of source electrode of NPN field effect transistor Q1, Second body diode D2 is parallel to drain electrode and the two ends of source electrode of the 2nd NPN field effect transistor Q2.Q2 and Q1 herein can also be PNP field effect transistor.
In the present embodiment, power controller 32 respectively with grid and the 2nd NPN field effect of NPN field effect transistor Q1 The grid of pipe Q2 connects, the earth terminal GND_BAT ground connection of power controller 32.When power controller 32 works, power controls Device 32 controls power circuit by output control signal and exports the first voltage VBUS_BAT, and this first voltage VBUS_BAT Load in the second source pin A9 of USB Type-C interface, the 3rd power pins B4, the 4th power pins A4.Wherein, should The voltage volt value of the first voltage VBUS_BAT or size of current and direction are power controlled the control of device 32.Work as power controller 32 when being in holding state, and the voltage of battery V1 exports on electric capacity C1.Therefore when power circuit is in holding state, output Electric capacity C1 voltage over the ground, the i.e. first voltage VBUS_BAT is approximately equal to cell voltage to the voltage of ground end GND.
In the present embodiment, the first power pins B9 and the microprocessor 33 of USB Type-C interface connect, and resistance One end and the microprocessor 33 of R1 connect, other end ground connection.Resistance R1 is set, does not access external setting at USB Type-C interface In the case of Bei, it is ensured that the level signal of the PLUGIN input of microprocessor 33 is low level signal, so that this USB Type-C interface circuit can be reliable and stable work.
In the present embodiment, microprocessor 33 by USB detection equipment 34 respectively with the first inspection of USB Type-C interface Survey pin CC1, the second detection pin CC2 connects.USB detection equipment 34 is for detecting type and the direction of insertion of external equipment. In the embodiment that some are possible, USB detection equipment 34 can be USB Type-C interface controller, or other USB inspection Survey identification circuit.
In the present embodiment, the first switch S1 controls this first voltage VBUS_BAT loading or disconnects in USB Type-C In the second source pin A9 of interface, the 3rd power pins B4, the 4th power pins A4.Second switch S1 controls power controller Reference ground end GND_BAT or USB of 32 detects the defeated of reference ground end GND_BAT and the USB Type-C interface circuit of equipment 34 Go out the break-make between ground GND_C.The first switch S1 or second switch S2 herein can be switch arrays module, it is also possible to be single Individual switch, can be electrical switch, it is also possible to be relay switch.In the embodiment that some are possible, if the first switch S1 or second switch S2 is to be controlled, within all should falling into protection domain of the present utility model by electrically.
When refer to the external equipment grafting USB Type-C interface that Fig. 4, Fig. 4 are this utility model embodiment one offer Sequential chart.As shown in Figure 4, before t1, owing to not having external equipment to insert USB Type-C interface, microprocessor 33 The input signal of PLUGIN input is low level signal, and the input signal of the 3rd Enable Pin EN3 is high level, the i.e. first switch S1 is in closure state, then the first voltage VBUS_BAT loads on the second source pin A9 of USB Type-C interface, the 3rd electricity It is high level signal in source pin B4, the 4th power pins A4.Labelling the first voltage VBUS_BAT now loads on USB The port of Type-C seam is VBUS port, and now VBUS port has voltage between ground end GND_BAT.Now The signal of the 4th Enable Pin EN4 output is low level, i.e. second switch S2 is off, and VBUS port is to reference to ground end Voltage is not had between GND_C.Now the first Enable Pin EN1 and the second Enable Pin EN2 output low level signal, i.e. USB detection sets Standby and power controller is in holding state.
In the t1 moment, when USB Type-C interface described in described external equipment grafting, due to the first power pins B9 and Second source pin A9 short circuit, and the 3rd power pins B4 and the 4th power pins A4 short circuit, now input PLUGIN input The signal of end is high level signal, and microprocessor 33 receives the of the first power pins input from described USB Type-C interface One voltage, i.e. receives the first voltage from PLUGIN input, and the first voltage herein is high level signal.PLUGIN input The time that high level signal maintains is t1 to t2.
In the t2 moment, microprocessor 33 is by the 3rd Enable Pin EN3 output low level signal, by described first switch S1's Closure state switches to off-state, and now VBUS port does not has voltage between GND_BAT.Microprocessor 33 makes by the 4th End EN4 output high level signal the off-state of second switch S2 can be switched to closure state, defeated by the first Enable Pin EN1 Going out high level signal makes described USB detection equipment start to detect described external equipment, and now GND_C with GND_BAT is connected.
In the t3 moment, after USB detection equipment is according to the protocol detection of Type-C to corresponding equipment, send the knowledge of ID identity Other information, microprocessor 33, according to this ID identity identification information, makes power control by the second Enable Pin EN2 output high level signal Device processed is started working, and switches to close by the off-state of described first switch by the 3rd Enable Pin EN3 output high level signal Conjunction state, now, begins with voltage between VBUS port to GND_C, the input signal of PLUGIN input is high level again Signal, therefore, this USB Type-C interface circuit starts normally to work.
Refer to Fig. 5, Fig. 5 is that the external equipment that provides of this utility model embodiment one is when extracting USB Type-C interface Sequential chart.As it is shown in figure 5, before t1, external equipment is grafting USB Type-C interface, the input of PLUGIN input always Signal maintains high level, and the first Enable Pin EN1 maintains high level to the input signal of the 4th Enable Pin EN4, then, and and VBUS end Mouth is high level to the voltage between GND_BAT, and the voltage between VBUS port to GND_C is high level.
In the t1 moment, when external equipment extracts USB Type-C interface, microprocessor 33 receives from USB Type-C interface The second voltage of the first power pins B9 input, this second voltage is low level signal, i.e. the input of PLUGIN input letter Number become low level signal in the t1 moment by high level signal.Now, microprocessor 33 exports low electricity by the 3rd Enable Pin EN3 Ordinary mail number, switches to off-state by the closure state of the first switch S1, i.e. VBUS port does not has voltage between GND_C, VBUS port does not has voltage between GND_BAT yet.When microprocessor 33 is by the low level signal of the 3rd Enable Pin EN3 output Maintain between t1 to t2.
In the t2 moment, after switching off described first, confirming that external equipment has been pulled out, microprocessor 33 passes through First Enable Pin EN output low level signal makes USB detection equipment be in holding state, exports low electricity by the second Enable Pin EN2 Ordinary mail number makes power controller be in holding state, by the 4th Enable Pin EN4 output low level signal by second switch S2's Closure state switches to off-state, thus reduces power consumption.
In the t3 moment, after being disconnected by second switch S2, microprocessor 33 is believed by the 3rd Enable Pin EN3 output high level Number the off-state that first switchs is switched to closure state, be used for accepting signal detection when external equipment inserts next time.
The present embodiment passes through to access second switch S2 on the earth terminal of USB Type-C interface, and by USB Type-C The input as detection signal drawn by one of them power pins line on interface, thus realizes automatically detecting external equipment The purpose inserted and extract USB Type-C interface.
The present embodiment is by turning off the USB detection equipment under ideal case and power controller, and such USB detects equipment With power controller without constantly work in 24 hours, thus greatly reduce the stand-by power consumption of whole circuit.
In the present embodiment, when external equipment or this USB Type-C interface circuit break down, microprocessor leads to Cross and the first switch S1 on VBUS port is disconnected, or the second switch S2 on ground wire is disconnected, thus protect circuitry.
After the external equipment of the present embodiment is extracted, the two ends of USB Type-C port i.e. VBUS port to GND_C are not have Electricity, thus meet the agreement of Type-C.Further, after detecting that external equipment inserts, by opening the first switch S1 and the Two switch S2, Type-C port i.e. VBUS ports have electricity to the two ends of GND_C, thus meet the agreement of Type-C.
In each embodiment above-mentioned, technical characteristic involved in each embodiment of described this utility model As long as the conflict of not constituting each other just can be mutually combined.
Embodiment two
Refer to the structure that Fig. 6, Fig. 6 are a kind of USB Type-C interface circuits that this utility model embodiment two provides Schematic diagram.As shown in Figure 6, this USB Type-C interface circuit includes:
Power circuit 61, for output the first voltage；
Power controller 62, for connecting with described power circuit, and exports control signal to control described power electricity Road exports described first voltage；
Microprocessor 63, for respectively with the first power pins B9 of USB Type-C interface, second source pin A9 with And described power controller 62 connects, and when USB Type-C interface does not connect external equipment, receive from described USB First power pins B9 of Type-C interface or the second voltage of second source pin A9 input are low by the first Enable Pin output Level signal makes USB detection equipment 64 be in holding state, makes described power control by the second Enable Pin output low level signal Device processed is in holding state；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, the first power supply Pin B9 or second source pin A9 is low level signal to the input of described microprocessor 63 because of unsettled.
Described circuit also includes the first switch S1 and second switch S2；
Described first switch S1 respectively with described power circuit 61, the 3rd power pins of described USB Type-C interface B4, the 4th power pins A4 and described microprocessor 63 connect；Described second switch S2 respectively with described power circuit 61, institute State microprocessor 63, the first grounding pin A1 of described USB Type-C interface, the second grounding leg B1, the 3rd grounding pin A12 And the 4th grounding pin B12 connect.
When USB Type-C interface described in described external equipment grafting, described microprocessor 63 receives from described USB First power pins B9 of Type-C interface or the first voltage of second source pin A9 input, defeated by the 3rd Enable Pin EN3 Go out low level signal, the closure state of described first switch S1 is switched to off-state；Described microprocessor 63 is by the 4th The off-state of described second switch S2 is switched to closure state by Enable Pin EN4 output high level signal, enables by first End EN1 output high level signal makes described USB detection equipment 64 start to detect described external equipment；Described USB detection equipment is known After not going out described external equipment, described microprocessor 63 makes described power control by the second Enable Pin EN2 output high level signal Device 62 processed is started working, and the off-state of described first switch S1 is switched by the 3rd Enable Pin EN3 output high level signal To closure state.
When described external equipment extracts described USB Type-C interface, and described microprocessor 63 receives from described USB First power pins B9 of Type-C interface or the second voltage of second source pin A9 input, and by the 3rd Enable Pin EN3 output low level signal, switches to off-state by the closure state of described first switch S1；By described first switch S1 After disconnection, described microprocessor 63 makes described USB detection equipment 64 be in by the first Enable Pin EN1 output low level signal Holding state, makes described power controller be in holding state, by the 4th by the second Enable Pin EN2 output low level signal The closure state of described second switch S2 is switched to off-state by Enable Pin EN4 output low level signal；Open described second After closing S2 disconnection, described microprocessor 63 switchs S1's by the 3rd Enable Pin EN3 output high level signal by described first Off-state switches to closure state.
In each embodiment above-mentioned, technical characteristic involved in each embodiment of described this utility model As long as the conflict of not constituting each other just can be mutually combined.
Embodiment three
Refer to the structure that Fig. 7, Fig. 7 are a kind of USB Type-C interface circuits that this utility model embodiment three provides show It is intended to.As it is shown in fig. 7, this USB Type-C interface circuit includes:
Power circuit 71, for output the first voltage；
Power controller 72, for connecting with described power circuit, and exports control signal to control described power electricity Road exports described first voltage；
Microprocessor 73, for respectively with the first power pins of USB Type-C interface, second source pin, the 3rd electricity Source pin and described power controller connect, and when USB Type-C interface does not connect external equipment, receive from institute State the first power pins of USB Type-C interface or second source pin or the second voltage of the 3rd power pins input, pass through First Enable Pin output low level signal makes USB detection equipment be in holding state, is believed by the second Enable Pin output low level Number described power controller is made to be in holding state；Wherein, described second voltage is that described external equipment extracts USB Type-C During interface, the first power pins B9 or second source pin A9 or the 3rd power pins B4 because of unsettled and to described microprocessor 73 The low level signal of input.
Described circuit also includes the first switch S1 and second switch S2；Described first switch S1 respectively with described power circuit 71, the 4th power pins A4 and the described microprocessor 73 of described USB Type-C interface connects；Described second switch S2 divides Other and described power circuit 71, described microprocessor 73, the first grounding pin A1 of described USB Type-C interface, the second ground connection Foot B1, the 3rd grounding pin A12 and the 4th grounding pin B12 connect.
When USB Type-C interface described in described external equipment grafting, described microprocessor 73 receives from described USB The first voltage that first power pins B9 of Type-C interface or second source pin A9 or the 3rd power pins B4 input, passes through 3rd Enable Pin EN3 output low level signal, switches to off-state by the closure state of described first switch S1；Described micro- The off-state of described second switch S2 is switched to closed form by the 4th Enable Pin EN4 output high level signal by processor 73 State, makes described USB detection equipment 74 start to detect described external equipment by the first Enable Pin EN1 output high level signal；Institute After stating USB detection equipment 74 identifying described external equipment, described microprocessor 73 is by the second Enable Pin EN2 output high level Signal makes described power controller 72 start working, by the 3rd Enable Pin EN3 output high level signal by described first switch The off-state of S1 switches to closure state.
When described external equipment extracts described USB Type-C interface, and described microprocessor 73 receives from described USB The second voltage that first power pins B9 of Type-C interface or second source pin A9 or the 3rd power pins B4 input, and By the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；By institute After stating the first switch S1 disconnection, described microprocessor 73 makes described USB examine by the first Enable Pin EN1 output low level signal Measurement equipment 74 is in holding state, makes described power controller 72 be in by the second Enable Pin EN2 output low level signal and treats Machine state, switches to disconnect shape by the closure state of described second switch S2 by the 4th Enable Pin EN4 output low level signal State；After being disconnected by described second switch S2, described microprocessor 73 exports high level signal by institute by the 3rd Enable Pin EN3 The off-state stating the first switch S1 switches to closure state.
In each embodiment above-mentioned, technical characteristic involved in each embodiment of described this utility model As long as the conflict of not constituting each other just can be mutually combined.
Embodiment four
Refer to the knot that Fig. 8, Fig. 8 are a kind of USB Type-C interface control units that this utility model embodiment four provides Structure schematic diagram.This device includes:
Power circuit 81, for output the first voltage；
Power controller 82, for connecting with described power circuit, and exports control signal to control described power electricity Road exports described first voltage；
Type-C interface controller 83, for the first detection pin and the second detection pin with USB Type-C interface even Connect, and detect external equipment；
Microprocessor 84, for respectively with the first power pins of USB Type-C interface and described power controller even Connect, and when USB Type-C interface does not connect external equipment, receive the first power supply from described USB Type-C interface Second voltage of pin input, makes described Type-C interface controller be in by the first Enable Pin output low level signal and treats Machine state, makes described power controller be in holding state by the second Enable Pin output low level signal.Wherein, described second Voltage is described external equipment when extracting USB Type-C interface, the first power pins B9 because of unsettled and to described microprocessor 84 The low level signal of input.
Described device also includes the first switch S1 and second switch S2；Described first switch S1 respectively with described power circuit 81, second source pin A9, the 3rd power pins B4, the 4th power pins A4 and described micro-process of USB Type-C interface Device 84 connects；Described second switch S2 respectively with described power circuit 81, described microprocessor 84, described USB Type-C interface The first grounding pin A1, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 connect.
When USB Type-C interface described in described external equipment grafting, described microprocessor 84 receives from described USB First voltage of the first power pins B9 input of Type-C interface, by the 3rd Enable Pin EN3 output low level signal, by institute The closure state stating the first switch S1 switches to off-state；Described microprocessor 84 is by the 4th high electricity of Enable Pin EN4 output The off-state of described second switch S2 is switched to closure state by ordinary mail number, is believed by the first Enable Pin EN1 output high level Number described Type-C interface controller 83 is made to start to detect described external equipment；Described Type-C interface controller 83 identifies institute After stating external equipment, described microprocessor 84 makes described power controller 82 by the second Enable Pin EN2 output high level signal Start working, by the 3rd Enable Pin EN3 output high level signal, the off-state of described first switch S1 is switched to Guan Bi State；
When described external equipment extracts described USB Type-C interface, and described microprocessor 84 receives from described USB Second voltage of the first power pins B9 input of Type-C interface, and by the 3rd Enable Pin EN3 output low level signal, The closure state of described first switch S1 is switched to off-state；After described first switch S1 is disconnected, described micro-process Device 84 makes described Type-C interface controller 83 be in holding state by the first Enable Pin EN1 output low level signal, passes through Second Enable Pin EN2 output low level signal makes described power controller be in holding state, is exported by the 4th Enable Pin EN4 The closure state of described second switch S2 is switched to off-state by low level signal；After described second switch S2 is disconnected, The off-state of described first switch S1 is switched to by described microprocessor 84 by the 3rd Enable Pin EN3 output high level signal Closure state.
In each embodiment above-mentioned, technical characteristic involved in each embodiment of described this utility model As long as the conflict of not constituting each other just can be mutually combined.
Embodiment five
Refer to the knot that Fig. 9, Fig. 9 are a kind of USB Type-C interface control units that this utility model embodiment five provides Structure schematic diagram.As it is shown in figure 9, this device includes:
Power circuit 91, for output the first voltage；
Power controller 92, for connecting with described power circuit, and exports control signal to control described power electricity Road exports described first voltage；
Type-C interface controller 93, for the first detection pin and the second detection pin with USB Type-C interface even Connect, and detect external equipment；
Microprocessor 94, for respectively with the first power pins, second source pin and the institute of USB Type-C interface State power controller to connect, and when USB Type-C interface does not connect external equipment, receive from described USB Type-C First power pins of interface or the second voltage of second source pin input, made by the first Enable Pin output low level signal Type-C interface controller is in holding state, makes described power controller be in by the second Enable Pin output low level signal Holding state.Wherein, described second voltage is described external equipment when extracting USB Type-C interface, the first power pins B9 or Second source pin A9 is low level signal to the input of described microprocessor 94 because of unsettled.
Described device also includes the first switch S1 and second switch S2；Described first switch S1 respectively with described power circuit 91, the 3rd power pins B4, the 4th power pins A4 and the described microprocessor 94 of described USB Type-C interface connects；Institute State second switch S2 respectively with described power circuit 91, described microprocessor 94, the first ground connection of described USB Type-C interface Pin A1, the second grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 connect.
When USB Type-C interface described in described external equipment grafting, described microprocessor 94 receives from described USB First power pins B9 of Type-C interface or the first voltage of second source pin A9 input, defeated by the 3rd Enable Pin EN3 Go out low level signal, the closure state of described first switch S1 is switched to off-state；Described microprocessor 94 is by the 4th The off-state of described second switch S2 is switched to closure state by Enable Pin EN4 output high level signal, enables by first End EN1 output high level signal makes described Type-C interface controller 92 start to detect described external equipment；Described Type-C connects After mouth controller 92 identifies described external equipment, described microprocessor 94 is by the second Enable Pin EN2 output high level signal Described power controller 92 is made to start working, by the 3rd Enable Pin EN3 output high level signal by described first switch S1's Off-state switches to closure state.
When described external equipment extracts described USB Type-C interface, and described microprocessor 94 receives from described USB First power pins B9 of Type-C interface or the second voltage of second source pin A9 input, and by the 3rd Enable Pin EN3 output low level signal, switches to off-state by the closure state of described first switch S1；Described first switch S1 is broken After opening, described microprocessor 94 makes described Type-C interface controller 93 by the first Enable Pin EN1 output low level signal It is in holding state, makes described power controller 92 be in holding state by the second Enable Pin EN2 output low level signal, logical Cross the 4th Enable Pin EN4 output low level signal and the closure state of described second switch S2 is switched to off-state；By described After second switch S2 disconnects, described microprocessor 94 is opened described first by the 3rd Enable Pin EN3 output high level signal The off-state closing S1 switches to closure state.
In each embodiment above-mentioned, technical characteristic involved in each embodiment of described this utility model As long as the conflict of not constituting each other just can be mutually combined.
Embodiment six
Refer to Figure 10, Figure 10 is a kind of USB Type-C interface control unit that this utility model embodiment six provides Structural representation.As shown in Figure 10, this device includes:
Power circuit 101, for output the first voltage；
Power controller 102, for connecting with described power circuit, and exports control signal to control described power electricity Road exports described first voltage；
Type-C interface controller 103, for the first detection pin and the second detection pin with USB Type-C interface Connect, and detect external equipment；
Microprocessor 104, for respectively with the first power pins B9 of USB Type-C interface, second source pin A9, 3rd power pins B4 and described power controller 102 connect, and when USB Type-C interface does not connect external equipment Time, receive the first power pins B9 from described USB Type-C interface or second source pin A9 or the 3rd power pins B4 is defeated The second voltage entered, makes Type-C interface controller be in holding state by the first Enable Pin EN1 output low level signal, logical Crossing the second Enable Pin EN2 output low level signal makes described power controller 102 be in holding state.Wherein, described second electricity When pressure extracts USB Type-C interface for described external equipment, the first power pins B9 or second source pin A9 or the 3rd power supply Pin B4 is low level signal to the input of described microprocessor 104 because of unsettled.
Described device also includes the first switch S1 and second switch S2；Described first switch S1 respectively with described power circuit 101, the 4th power pins A4 and the described microprocessor 104 of described USB Type-C interface connects；Described second switch S2 Respectively with described power circuit 101, described microprocessor 104, the first grounding pin A1 of described USB Type-C interface, Two grounding leg B1, the 3rd grounding pin A12 and the 4th grounding pin B12 connect.
When USB Type-C interface described in described external equipment grafting, described microprocessor 104 receives from described USB The first voltage that first power pins B9 of Type-C interface or second source pin A9 or the 3rd power pins B4 input, passes through 3rd Enable Pin EN3 output low level signal, switches to off-state by the closure state of described first switch S1；Described micro-place The off-state of described second switch S2 is switched to closed form by the 4th Enable Pin EN4 output high level signal by reason device 104 State, makes described Type-C interface controller 103 start to detect described external set by the first Enable Pin EN1 output high level signal Standby；After described Type-C interface controller 103 identifies described external equipment, described microprocessor 104 is by the second Enable Pin EN2 output high level signal makes described power controller 102 start working, by the 3rd Enable Pin EN3 output high level signal The off-state of described first switch S1 is switched to closure state；
When described external equipment extracts described USB Type-C interface, and described microprocessor 104 receives from described USB The second voltage that first power pins B9 of Type-C interface or second source pin A9 or the 3rd power pins B4 input, and By the 3rd Enable Pin EN3 output low level signal, the closure state of described first switch S1 is switched to off-state；By institute After stating the first switch S1 disconnection, described microprocessor 104 makes described by the first Enable Pin EN1 output low level signal Type-C interface controller 103 is in holding state, makes described power control by the second Enable Pin EN2 output low level signal Device 102 is in holding state, is cut by the closure state of described second switch S2 by the 4th Enable Pin EN4 output low level signal Shift to off-state；After being disconnected by described second switch S2, described microprocessor 104 is by the 3rd Enable Pin EN3 output height The off-state of described first switch S1 is switched to closure state by level signal.
In each embodiment above-mentioned, technical characteristic involved in each embodiment of described this utility model As long as the conflict of not constituting each other just can be mutually combined.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model Protection domain within.

Claims (12)

1. a USB Type-C interface circuit, it is characterised in that described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control the output of described power circuit Described first voltage；
Microprocessor, for being connected with the first power pins and the described power controller of USB Type-C interface respectively, and When USB Type-C interface does not connect external equipment, receive the first power pins input from described USB Type-C interface The second voltage, by the first Enable Pin output low level signal make USB detection equipment be in holding state, by second enable End output low level signal makes described power controller be in holding state；Wherein, described second voltage is described external equipment When extracting USB Type-C interface, the first power pins is low level signal that is that input described microprocessor because of unsettled.
Circuit the most according to claim 1, it is characterised in that
Described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the second source pin of described USB Type-C interface, the 3rd power supply Pin, the 4th power pins and described microprocessor connect；Described second switch respectively with described power circuit, described micro-place Reason device, the first grounding pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin of described USB Type-C interface Connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives and connects from described USB Type-C First voltage of the first power pins input of mouth, by the 3rd Enable Pin output low level signal, by described first switch Closure state switches to off-state；Described microprocessor exports high level signal by described second switch by the 4th Enable Pin Off-state switch to closure state, by first Enable Pin output high level signal make described USB detection equipment start inspection Survey described external equipment；After described USB detection equipment identifies described external equipment, described microprocessor passes through the second Enable Pin Output high level signal makes described power controller start working, by the 3rd Enable Pin output high level signal by described first The off-state of switch switches to closure state；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C interface The second voltage of the first power pins input, and by the 3rd Enable Pin output low level signal, will described first switch Closure state switch to off-state；After switching off described first, described microprocessor is defeated by the first Enable Pin Going out low level signal makes described USB detection equipment be in holding state, is made described by the second Enable Pin output low level signal Power controller is in holding state, is cut by the closure state of described second switch by the 4th Enable Pin output low level signal Shift to off-state；After being disconnected by described second switch, described microprocessor is by the 3rd Enable Pin output high level signal The off-state of described first switch is switched to closure state.
3. a USB Type-C interface circuit, it is characterised in that described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control the output of described power circuit Described first voltage；
Microprocessor, for respectively with the first power pins, second source pin and the described power of USB Type-C interface Controller connects, and when USB Type-C interface does not connect external equipment, receives from described USB Type-C interface First power pins or the second voltage of second source pin input, make USB examine by the first Enable Pin output low level signal Measurement equipment is in holding state, makes described power controller be in holding state by the second Enable Pin output low level signal； Wherein, described second voltage is described external equipment when extracting USB Type-C interface, and the first power pins or second source draw Foot is low level signal that is that input described microprocessor because of unsettled.
Circuit the most according to claim 3, it is characterised in that
Described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 3rd power pins of described USB Type-C interface, the 4th power supply Pin and described microprocessor connect；Described second switch respectively with described power circuit, described microprocessor, described USB First grounding pin of Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives and connects from described USB Type-C First power pins of mouth or the first voltage of second source pin input, by the 3rd Enable Pin output low level signal, will The closure state of described first switch switches to off-state；Described microprocessor is by the 4th Enable Pin output high level signal The off-state of described second switch is switched to closure state, makes described USB by the first Enable Pin output high level signal Detection equipment starts to detect described external equipment；After described USB detection equipment identifies described external equipment, described microprocessor Described power controller is made to start working by the second Enable Pin output high level signal, by the 3rd Enable Pin output high level The off-state of described first switch is switched to closure state by signal；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C interface The first power pins or the second voltage of second source pin input, and by the 3rd Enable Pin output low level signal, The closure state of described first switch is switched to off-state；After switching off described first, described microprocessor leads to Crossing the first Enable Pin output low level signal makes described USB detection equipment be in holding state, low by the second Enable Pin output Level signal makes described power controller be in holding state, is opened described second by the 4th Enable Pin output low level signal The closure state closed switches to off-state；After being disconnected by described second switch, described microprocessor passes through the 3rd Enable Pin The off-state of described first switch is switched to closure state by output high level signal.
5. a USB Type-C interface circuit, it is characterised in that described circuit includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control the output of described power circuit Described first voltage；
Microprocessor, for respectively with the first power pins of USB Type-C interface, second source pin, the 3rd power pins And described power controller connects, and when USB Type-C interface does not connect external equipment, receive from described USB The second voltage that first power pins of Type-C interface or second source pin or the 3rd power pins input, makes by first USB detection equipment can be made to be in holding state by end output low level signal, make institute by the second Enable Pin output low level signal State power controller and be in holding state；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, First power pins or second source pin or the 3rd power pins be low level that is that input described microprocessor letter because of unsettled Number.
Circuit the most according to claim 5, it is characterised in that
Described circuit also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 4th power pins of described USB Type-C interface and described micro- Processor connects；Described second switch respectively with described power circuit, described microprocessor, the of described USB Type-C interface One grounding pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives and connects from described USB Type-C The first voltage that first power pins of mouth or second source pin or the 3rd power pins input, is exported by the 3rd Enable Pin Low level signal, switches to off-state by the closure state of described first switch；Described microprocessor passes through the 4th Enable Pin The off-state of described second switch is switched to closure state by output high level signal, by the first Enable Pin output high level Signal makes described USB detection equipment start to detect described external equipment；Described USB detection equipment identifies described external equipment After, described microprocessor makes described power controller start working, by the 3rd by the second Enable Pin output high level signal The off-state of described first switch is switched to closure state by Enable Pin output high level signal；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C interface The first power pins second source pin or the 3rd power pins input the second voltage, and by the 3rd Enable Pin defeated Go out low level signal, the closure state of described first switch is switched to off-state；After switching off described first, institute Stating microprocessor makes described USB detection equipment be in holding state, by second by the first Enable Pin output low level signal Enable Pin output low level signal makes described power controller be in holding state, by the 4th Enable Pin output low level signal The closure state of described second switch is switched to off-state；After being disconnected by described second switch, described microprocessor leads to Cross the 3rd Enable Pin output high level signal and the off-state of described first switch is switched to closure state.
7. a USB Type-C interface control unit, it is characterised in that described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control the output of described power circuit Described first voltage；
Type-C interface controller, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and And detection external equipment；
Microprocessor, for being connected with the first power pins and the described power controller of USB Type-C interface respectively, and When USB Type-C interface does not connect external equipment, receive the first power pins input from described USB Type-C interface The second voltage, make described Type-C interface controller be in holding state by the first Enable Pin output low level signal, logical Crossing the second Enable Pin output low level signal makes described power controller be in holding state；Wherein, described second voltage is institute Stating external equipment when extracting USB Type-C interface, the first power pins is low level that is that input described microprocessor because of unsettled Signal.
Device the most according to claim 7, it is characterised in that
Described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the second source pin of described USB Type-C interface, the 3rd power supply Pin, the 4th power pins and described microprocessor connect；Described second switch respectively with described power circuit, described micro-place Reason device, the first grounding pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin of described USB Type-C interface Connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives and connects from described USB Type-C First voltage of the first power pins input of mouth, by the 3rd Enable Pin output low level signal, by described first switch Closure state switches to off-state；Described microprocessor exports high level signal by described second switch by the 4th Enable Pin Off-state switch to closure state, by first Enable Pin output high level signal make described Type-C interface controller open Begin to detect described external equipment；After described Type-C interface controller identifies described external equipment, described microprocessor passes through Second Enable Pin output high level signal makes described power controller start working, by the 3rd Enable Pin output high level signal The off-state of described first switch is switched to closure state；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C interface The second voltage of the first power pins input, and by the 3rd Enable Pin output low level signal, will described first switch Closure state switch to off-state；After switching off described first, described microprocessor is defeated by the first Enable Pin Going out low level signal makes described Type-C interface controller be in holding state, is made by the second Enable Pin output low level signal Described power controller is in holding state, by the 4th Enable Pin output low level signal by the closed form of described second switch State switches to off-state；After being disconnected by described second switch, described microprocessor is by the 3rd Enable Pin output high level The off-state of described first switch is switched to closure state by signal.
9. a USB Type-C interface control unit, it is characterised in that described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control the output of described power circuit Described first voltage；
Type-C interface controller, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and And detection external equipment；
Microprocessor, for respectively with the first power pins, second source pin and the described power of USB Type-C interface Controller connects, and when USB Type-C interface does not connect external equipment, receives from described USB Type-C interface First power pins or the second voltage of second source pin input, make Type-C by the first Enable Pin output low level signal Interface controller is in holding state, makes described power controller be in standby shape by the second Enable Pin output low level signal State；Wherein, described second voltage is described external equipment when extracting USB Type-C interface, the first power pins or second source Pin is low level signal that is that input described microprocessor because of unsettled.
Device the most according to claim 9, it is characterised in that
Described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 3rd power pins of described USB Type-C interface, the 4th power supply Pin and described microprocessor connect；Described second switch respectively with described power circuit, described microprocessor, described USB First grounding pin of Type-C interface, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives and connects from described USB Type-C First power pins of mouth or the first voltage of second source pin input, by the 3rd Enable Pin output low level signal, will The closure state of described first switch switches to off-state；Described microprocessor is by the 4th Enable Pin output high level signal The off-state of described second switch is switched to closure state, makes described by the first Enable Pin output high level signal Type-C interface controller starts to detect described external equipment；Described Type-C interface controller identifies described external equipment After, described microprocessor makes described power controller start working, by the 3rd by the second Enable Pin output high level signal The off-state of described first switch is switched to closure state by Enable Pin output high level signal；
Or,
When described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type-C interface The first power pins or the second voltage of second source pin input, and by the 3rd Enable Pin output low level signal, The closure state of described first switch is switched to off-state；After switching off described first, described microprocessor leads to Crossing the first Enable Pin output low level signal makes described Type-C interface controller be in holding state, defeated by the second Enable Pin Going out low level signal makes described power controller be in holding state, by the 4th Enable Pin output low level signal by described The closure state of two switches switches to off-state；After being disconnected by described second switch, described microprocessor makes by the 3rd End output high level signal the off-state of described first switch can be switched to closure state.
11. 1 kinds of USB Type-C interface control units, it is characterised in that described device includes:
Power circuit, for output the first voltage；
Power controller, for connecting with described power circuit, and exports control signal to control the output of described power circuit Described first voltage；
Type-C interface controller, for being connected with the first of USB Type-C interface the detection pin and the second detection pin, and And detection external equipment；
Microprocessor, for respectively with the first power pins of USB Type-C interface, second source pin, the 3rd power pins And described power controller connects, and when USB Type-C interface does not connect external equipment, receive from described USB The second voltage that first power pins of Type-C interface or second source pin or the 3rd power pins input, makes by first Type-C interface controller can be made to be in holding state, by the second Enable Pin output low level signal by end output low level signal Described power controller is made to be in holding state；Wherein, described second voltage is that described external equipment is extracted USB Type-C and connect During mouth, the first power pins or second source pin or the 3rd power pins be low electricity that is that input described microprocessor because of unsettled Ordinary mail number.
12. devices according to claim 11, it is characterised in that
Described device also includes the first switch and second switch；
Described first switch respectively with described power circuit, the 4th power pins of described USB Type-C interface and described micro- Processor connects；Described second switch respectively with described power circuit, described microprocessor, the of described USB Type-C interface One grounding pin, the second grounding leg, the 3rd grounding pin and the 4th grounding pin connect；
When USB Type-C interface described in described external equipment grafting, described microprocessor receives and connects from described USB Type-C The first voltage that first power pins of mouth or second source pin or the 3rd power pins input, is exported by the 3rd Enable Pin Low level signal, switches to off-state by the closure state of described first switch；Described microprocessor passes through the 4th Enable Pin The off-state of described second switch is switched to closure state by output high level signal, by the first Enable Pin output high level Signal makes described Type-C interface controller start to detect described external equipment；Described Type-C interface controller identifies described After external equipment, described microprocessor makes described power controller start working by the second Enable Pin output high level signal, By the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state；
Or, when described external equipment extracts described USB Type-C interface, and described microprocessor receives from described USB Type- The second voltage that first power pins of C interface or second source pin or the 3rd power pins input, and make by the 3rd Energy end output low level signal, switches to off-state by the closure state of described first switch；Switch off described first Afterwards, described microprocessor makes described Type-C interface controller be in standby shape by the first Enable Pin output low level signal State, makes described power controller be in holding state by the second Enable Pin output low level signal, defeated by the 4th Enable Pin Go out low level signal and the closure state of described second switch is switched to off-state；After described second switch is disconnected, institute State microprocessor, by the 3rd Enable Pin output high level signal, the off-state of described first switch is switched to closure state.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105867593A (en) * 2016-05-17 2016-08-17 深圳慧能泰半导体科技有限公司 USB Type-C interface circuit and control device thereof
CN106681950A (en) * 2017-01-11 2017-05-17 联想(北京)有限公司 Signal transmission processing method and device
WO2018192164A1 (en) * 2017-04-21 2018-10-25 深圳东方酷音信息技术有限公司 Method, device and system for reducing power consumption at type-c interface
CN108874704A (en) * 2017-05-12 2018-11-23 展讯通信（上海）有限公司 Usb circuit and electronic equipment
CN111949107A (en) * 2019-05-15 2020-11-17 北京小米移动软件有限公司 Method and device for controlling electronic equipment comprising USB Type-C interface and electronic equipment

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105867593A (en) * 2016-05-17 2016-08-17 深圳慧能泰半导体科技有限公司 USB Type-C interface circuit and control device thereof
CN105867593B (en) * 2016-05-17 2018-11-13 深圳慧能泰半导体科技有限公司 A kind of USB Type-C interface circuits and its control device
CN106681950A (en) * 2017-01-11 2017-05-17 联想(北京)有限公司 Signal transmission processing method and device
CN106681950B (en) * 2017-01-11 2020-03-24 联想(北京)有限公司 Signal transmission processing method and device
WO2018192164A1 (en) * 2017-04-21 2018-10-25 深圳东方酷音信息技术有限公司 Method, device and system for reducing power consumption at type-c interface
CN108874704A (en) * 2017-05-12 2018-11-23 展讯通信（上海）有限公司 Usb circuit and electronic equipment
CN108874704B (en) * 2017-05-12 2019-12-13 展讯通信（上海）有限公司 USB interface circuit and electronic equipment
CN111949107A (en) * 2019-05-15 2020-11-17 北京小米移动软件有限公司 Method and device for controlling electronic equipment comprising USB Type-C interface and electronic equipment
CN111949107B (en) * 2019-05-15 2023-11-07 北京小米移动软件有限公司 Method and device for controlling electronic equipment comprising USB Type-C interface and electronic equipment

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