CN209675978U

CN209675978U - A kind of usb hub circuit and usb hub

Info

Publication number: CN209675978U
Application number: CN201920638310.4U
Authority: CN
Inventors: 王智勇; 梁明坤; 张朝龙
Original assignee: Hefei Huike Jinyang Technology Co Ltd
Current assignee: Hefei Huike Jinyang Technology Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2019-11-22
Anticipated expiration: 2029-05-06

Abstract

The application is suitable for charging technique technical field, provides a kind of usb hub circuit and usb hub, the usb hub circuit includes: to carry out voltage conversion to power supply signal, to export the DC voltage conversion module of corresponding d. c. voltage signal；Corresponding upstream differential is exported to the USB input module of signal according to bus voltage signal；Multiple groups downstream differential is exported to the usb hub control module of signal according to d. c. voltage signal；Multiple groups downstream differential is converted to signal to the USB output module of corresponding multiple direct-flow output signals；And d. c. voltage signal is converted to the power management module of multiple fast charge d. c. voltage signals, it realizes and quick charge is carried out to the mobile terminal with fast charge function by usb hub, need to carry dedicated charger so as to avoid user.

Description

A kind of usb hub circuit and usb hub

Technical field

The application belongs to charging technique field, in particular to a kind of usb hub circuit and usb hub.

Background technique

Rapid nitriding obtains on the consumer electronics products such as mobile phone, tablet computer, wearable device at present It is widely applied very much, brings very big convenience to user.

However, supporting the electronic product of fast charge to require just to be able to achieve quick charge equipped with special charger, with oneself It carries dedicated charger and brings great inconvenience to user.

Utility model content

The application's is designed to provide a kind of usb hub circuit and usb hub, it is intended to solve to support the electricity of fast charge Sub- product requires just to be able to achieve quick charge equipped with special charger, carries dedicated charger and brings to user Greatly inconvenient problem.

The embodiment of the present application provides a kind of usb hub circuit, connect with signal input module, the usb hub Circuit includes:

DC voltage conversion module is connect with the signal input module, and the DC voltage conversion module is to the letter The power supply signal of number input module output carries out voltage conversion, to export corresponding d. c. voltage signal；

USB input module is connect with the signal input module, and the USB input module receives the signal and inputs mould The bus voltage signal of block output, and corresponding upstream differential is exported to signal according to the bus voltage signal；

Usb hub control module is connect with the USB input module and the DC voltage conversion module, described Usb hub control module receives the d. c. voltage signal and the upstream differential to signal, and according to the DC voltage Signal and the upstream differential export multiple groups downstream differential to signal to signal；

USB output module is connect with the usb hub control module, under the USB output module receives described in multiple groups Row differential pair signal, and downstream differential described in multiple groups is converted into corresponding multiple direct-flow output signals to signal；And

Power management module is connect with the DC voltage conversion module, and the power management module is by the direct current Pressure signal is converted to multiple fast charge d. c. voltage signals.The downstream differential described in signal multiple groups of downstream differential described in multiple groups is to signal

The embodiment of the present application also provides a kind of usb hubs, comprising:

Receive the signal input part of power supply signal input and USB authentication signal；

Usb hub circuit as described in any of the above-described embodiment；And

The packaging body that the usb hub circuit is packaged.

The embodiment of the present application provides a kind of usb hub circuit and usb hub, the usb hub circuit include: Voltage conversion is carried out to the power supply signal of signal input module output, to export the direct current of corresponding d. c. voltage signal Press conversion module；The d. c. voltage signal and USB authentication signal are received, according to the USB authentication signal by the direct current Voltage signal is converted to the general-purpose interface authentication unit of corresponding bus voltage signal；Receive the bus of signal input module output Voltage signal exports corresponding upstream differential to the USB input module of signal according to the bus voltage signal；It receives described straight Voltage signal and the upstream differential are flowed to signal, and signal is exported according to the d. c. voltage signal and the upstream differential Usb hub control module of the multiple groups downstream differential to signal；Downstream differential described in multiple groups is received to signal, and will be described in multiple groups Downstream differential is converted to the USB output module of corresponding multiple direct-flow output signals to signal；And the DC voltage is believed The power management module for number being converted to multiple fast charge d. c. voltage signals is realized through usb hub to having the function of fast charge Mobile terminal carry out quick charge, need to carry dedicated charger so as to avoid user, solve and support fast charge Electronic product requires just to be able to achieve quick charge equipped with special charger, carries dedicated charger and brings to user The problem of great inconvenience.

Detailed description of the invention

Fig. 1 is the structural schematic diagram for the usb hub circuit that one embodiment of the application provides；

Fig. 2 is the structural schematic diagram for the usb hub circuit that another embodiment of the application provides；

Fig. 3 is the structural schematic diagram for the usb hub circuit that another embodiment of the application provides；

Fig. 4 is the structural schematic diagram for the usb hub circuit that another embodiment of the application provides；

Fig. 5 is the structural schematic diagram for the usb hub circuit that another embodiment of the application provides；

Fig. 6 is the structural schematic diagram for the usb hub circuit that another embodiment of the application provides；

Fig. 7 is the structural schematic diagram for the DC voltage conversion module that one embodiment of the application provides；

Fig. 8 is the structural schematic diagram for the general-purpose interface authentication unit that one embodiment of the application provides；

Fig. 9 is the structural schematic diagram for the USB input module that one embodiment of the application provides；

Figure 10 is the structural schematic diagram for the usb hub control module that one embodiment of the application provides；

Figure 11 is the structural schematic diagram for the first USB output unit that one embodiment of the application provides；

Figure 12 is the structural schematic diagram for the 2nd USB output unit that one embodiment of the application provides；

Figure 13 is the structural schematic diagram for the first fast charge unit that one embodiment of the application provides；

Figure 14 is the structural schematic diagram for the second fast charge unit that one embodiment of the application provides；

Figure 15 is the structural schematic diagram for the first over-current protecting unit that one embodiment of the application provides；

Figure 16 is the structural schematic diagram for the second over-current protecting unit that one embodiment of the application provides；

Figure 17 is the structural schematic diagram for the anti-static module that one embodiment of the application provides；

Figure 18 is the first electromagnetism interference module and the second electromagnetism interference mould that one embodiment of the application provides The structural schematic diagram of block.

Specific embodiment

It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood The application is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the application, not For limiting the application.

It should be noted that when component is referred to as " being fixed on " or " being set to " another component, it can directly or It connects and is located on another component.When a component referred to as " is connected to " another component, it be can be directly or indirectly It is connected on another component.Term " on ", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", The orientation or position of the instructions such as "bottom", "inner", "outside" are orientation based on the figure or position, are merely for convenience of describing, It should not be understood as the limitation to the technical program.Term " first ", " second " are used merely to facilitate description purpose, and should not be understood as Indication or suggestion relative importance or the quantity for implicitly indicating technical characteristic.The meaning of " plurality " is two or more, Unless otherwise specifically defined.

In order to illustrate technical solution described herein, it is described in detail below in conjunction with specific accompanying drawings and embodiments.

Fig. 1 is the structural schematic diagram for the usb hub circuit that one embodiment of the application provides, shown in Figure 1, this The usb hub circuit of support quick-charge function in embodiment, connect with signal input module 10, usb hub circuit Include:

DC voltage conversion module 20 is connect with signal input module 10, and DC voltage conversion module 20 inputs signal The power supply signal of module output carries out voltage conversion, to export corresponding d. c. voltage signal；

USB input module 30 is connect with signal input module 10, and it is defeated that USB input module 30 receives signal input module 10 Bus voltage signal out exports corresponding upstream differential to signal according to bus voltage signal；

Usb hub control module 40 is connect with USB input module 30 and DC voltage conversion module 20, USB set line Device control module 40 receives d. c. voltage signal and upstream differential to signal, and according to d. c. voltage signal and upstream differential to letter Number output multiple groups downstream differential to signal；

USB output module 50 is connect with usb hub control module 40, and USB output module 50 receives downlink described in multiple groups Differential pair signal, and downstream differential described in multiple groups is converted into corresponding multiple direct-flow output signals to signal；And

Power management module 60 is connect with DC voltage conversion module 20, and power management module 60 is by d. c. voltage signal Be converted to multiple fast charge d. c. voltage signals.

In the present embodiment, signal output module 10 can be the input interface of usb hub circuit, for when in use The power supply signal, such as computer, adapter etc. of upper equipment output are received, synchronous signal output module 10 can be also used for receiving Bus voltage signal in upper equipment.DC voltage conversion module 20 carries out electricity to the power supply signal that signal input module exports Pressure conversion, to export corresponding d. c. voltage signal, is then converted to d. c. voltage signal by power management module 60 more A fast charge d. c. voltage signal, USB input module 30, USB input module 30 receive the bus voltage of signal input module output Signal exports corresponding upstream differential according to bus voltage signal and exports signal to usb hub control module 40, USB set Line device control module 40 is according to d. c. voltage signal and upstream differential to signal output multiple groups downstream differential to signal, USB output Module 50 receives downstream differential described in multiple groups to signal, and downstream differential described in multiple groups is converted to signal corresponding multiple straight Stream output signal charges to terminal device, wherein and USB output module 50 carries out data transmission with downbound expansion equipment, under Row expansion equipment includes USB flash disk, plate etc..

In one embodiment, signal input module 10 includes: general-purpose interface authentication unit 11, with signal input module 10 And DC voltage conversion module 20 connects, general-purpose interface authentication unit 11 receives d. c. voltage signal and USB authentication signal, D. c. voltage signal is converted into corresponding bus voltage signal according to USB authentication signal.

In the present embodiment, general-purpose interface authentication unit 11 is used to carry out USB IF certification to connector.

In one embodiment, shown in Figure 2, power management module 60 includes:

First fast charge unit 61, connect with DC voltage conversion module 20, and the first fast charge unit 61 receives DC voltage letter Number, and d. c. voltage signal is converted into the first fast charge d. c. voltage signal；And

Second fast charge unit 61, connect with DC voltage conversion module 20, and the second fast charge unit 61 receives DC voltage letter Number, and d. c. voltage signal is converted into the second fast charge d. c. voltage signal.

In one embodiment, shown in Figure 3, usb hub circuit further include:

First over-current protecting unit 71 is connect with DC voltage conversion module 20 and the first fast charge unit 61, first respectively Over-current protecting unit 71 carries out overcurrent protection to the first fast charge d. c. voltage signal；And

Second over-current protecting unit 72 is connect with DC voltage conversion module 20 and with the second fast charge unit 62 respectively, the Two over-current protecting units 72 carry out overcurrent protection to the second fast charge d. c. voltage signal.

In the present embodiment, the first over-current protecting unit 71 detects the first fast charge d. c. voltage signal, and One fast charge d. c. voltage signal carries out shutdown output, the second overcurrent protection to the first fast charge d. c. voltage signal when being more than setting value Unit 72 detects the second fast charge d. c. voltage signal, and when the second fast charge d. c. voltage signal is more than setting value to the Two fast charge d. c. voltage signals carry out shutdown output.

In one embodiment, shown in Figure 4, USB output module 50 includes:

First USB output unit 51 is connect with usb hub control module 40, and the first USB output unit 51 receives USB The first downstream differential that hub control module 40 exports is converted to the first direct current to signal to signal, and by the first downstream differential Output signal；And

2nd USB output unit 52 is connect with usb hub control module 40, and the 2nd USB output unit 51 receives USB The second downstream differential that hub control module 40 exports is converted to the second direct current to signal to signal, and by the second downstream differential Output signal.

In the present embodiment, the multiple groups downstream differential that usb hub control module 40 exports includes the first downlink to signal To signal, the first USB output unit 51 and the 2nd USB output unit 52 be can be used as differential pair signal and the second downstream differential Downbound expansion output interface is connect with downstream plant.

In one embodiment, shown in Figure 5, usb hub circuit further include:

First electromagnetism interference module 81 is set between usb hub control module 40 and the first USB output unit 51, First electromagnetism interference module 81 carries out the first electromagnetism interference mould of electromagnetism interference processing to the first downstream differential to signal Block 81；

Second electromagnetism interference module 82 is set between usb hub control module 40 and the 2nd USB output unit 52, Second electromagnetism interference module 82 carries out the second electromagnetism interference mould of electromagnetism interference processing to the second downstream differential to signal Block 82.

In one embodiment, shown in Figure 6, usb hub circuit further include:

Anti-static module 80 is set between USB input module 30 and usb hub control module 40, anti-static module 80 The anti-static module 80 of electrostatic protection processing is carried out to signal to upstream differential.

In one embodiment, shown in Figure 7, DC voltage conversion module 20 includes: power supply chip U2, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the first inductance L1, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7, the 8th capacitor C8 and the 9th capacitor C9；

The first end of first capacitor C1, the first end of the second capacitor C2, the first end and power supply chip of first resistor R1 The power supply signal input IN of U2 is connected to signal input module 10, the second end of first capacitor C1 and the second of the second capacitor C2 altogether End is connected to ground altogether, and the second end of first resistor R1, the first end of second resistance R2, the first end of third capacitor C3 are connected to power supply altogether The second end and third of the enable signal end En of chip U2, the operating mode signal end MODE of power supply signal, second resistance R2 The second end of capacitor C3 is connected to ground altogether, and the first end of the output voltage signal monitoring side PG and 3rd resistor R3 of power supply chip U2 connect It connecing, the first end of the second end of 3rd resistor R3, the voltage signal end VCC of power supply chip U2 and the 4th capacitor C4 connects altogether, the The second end of four capacitor C4 is grounded, and the simulation earth signal end AGND and power ground signal end PGND of power supply chip U2 is grounded, Voltage signal output end VOUT, the first end of the 6th capacitor C6, the first end of the first inductance L1, the 7th capacitor of power supply chip U2 The first end of C7, the first end of the 7th resistance R7, the first end of the 9th capacitor C9 and the first end of the 8th capacitor C8 connect work altogether For DC voltage conversion module 20 d. c. voltage signal output end P5V, power supply chip U2 from boost signal end BST and the 4th The first end of resistance R4 connects, the conversion signal end SW of power supply chip U2, the first end of the 5th capacitor C5, the first inductance L1 the The first end of two ends and the 5th resistance R5 connect altogether, the second end of the 5th capacitor C5 and the second end of the 4th resistance R4, the 5th electricity Second end, the second end of the 7th capacitor C7 and the first end of the 6th resistance R6 of resistance R5 connects altogether, the feedback signal of power supply signal End FB, the second end of the 6th resistance R6, the second end of the 7th resistance R7 and the first end of the 8th resistance R8 connect altogether, the 8th resistance The second end of R8 is connect with the first end of the 9th resistance R9, the second end ground connection of the 9th resistance R9, the second end of the 9th capacitor C9 It is connected to ground altogether with the second end of the 8th capacitor C8.

In one embodiment, the model MP8765 of power supply chip U2.

In one embodiment, shown in Figure 8, general-purpose interface authentication unit 11 includes: the first electronic switching tube Q1, One diode D1, the tenth resistance R10 and the tenth capacitor C10；

The current input terminal of the cathode of first diode D1 and the first electronic switching tube Q1 are connected to DC voltage modulus of conversion altogether Block 20, the anode of first diode D1, the first electronic switching tube Q1 current output terminal be connected to USB input module 30 altogether, first The control terminal of electronic switching tube Q1 is connect with the first end of the tenth resistance R10, the second end and the tenth capacitor of the tenth resistance R10 The first end of C10 is connected to signal input module 10, the second end ground connection of the tenth capacitor C10 altogether.

In one embodiment, the cathode of first diode D1 and the current input terminal of the first electronic switching tube Q1 are connected to altogether The d. c. voltage signal output end P5V of DC voltage conversion module 20.The anode of first diode D1, the first electronic switching tube Q1 Current output terminal meet the bus voltage signal output end 5VBus as general-purpose interface authentication unit 11 altogether.

In one embodiment, the second end of the tenth resistance R10 and the first end of the tenth capacitor C10 are connected to signal input altogether The USB authentication signal pin AdinDet of module 10.

In one embodiment, shown in Figure 9, USB input module 30 include: uplink USB connector chip UPPORT, 11st capacitor C11, the 12nd capacitor C12 and the second inductance L2；

The first end of second inductance L2, the first end of the 11st capacitor C11, the first end of the 12nd capacitor C12 and on The power end VCC of row USB connector chip UPPORT is connected to general-purpose interface authentication unit 11, uplink USB connector chip altogether The upstream differential of UPPORT to signal anode transmitting terminal TXP and upstream differential to signal cathode transmitting terminal TXN and usb hub Control module 40 connects, and the upstream differential of uplink USB connector chip UPPORT is to signal anode receiving end RXP and upstream differential Signal cathode receiving end RXN is connect with usb hub control module 40, the anode of uplink USB connector chip UPPORT Signal output end D+ and negative signal output end D- are connect with usb hub control module 40, uplink USB connector chip The ground terminal GND of UPPORT is grounded.

In one embodiment, shown in Figure 10, usb hub control module includes: USB HUB chip U5, the tenth Three capacitor C13, the 14th capacitor C14 and third inductance L3；

The pin LX of USB HUB chip U5 is connect with the first end of third inductance L3, the second end of third inductance L3, the tenth The first end of three capacitor C13 and the first end of the 14th capacitor C14 are connected to the pin VCC11FB of USB HUB chip U5 altogether, draw Foot VCCD4, pin VCC11_L0, pin VCC11_L3, pin VCCD1, pin VCC11_L2, pin VCC11M, pin VCCD3, to be filtered to d. c. voltage signal DC1_1V, the second end and the 14th capacitor C14 of the 13rd capacitor C13 Second end connect altogether.

In one embodiment, pin SSTX0+, pin of the transmission upstream differential of USB HUB chip U5 to signal SSTX0- respectively the upstream differential with uplink USB connector chip UPPORT to signal anode transmitting terminal TXP and upstream differential pair Signal cathode transmitting terminal TXN connection, pin SSRX0+, the pin SSRX0- of USB HUB chip U5 respectively with uplink USB connector The upstream differential of chip UPPORT is to signal anode receiving end RXP and upstream differential to the receiving end RXN connection of signal cathode, USB Pin HSD+, the pin HSD- of HUB chip U5 respectively with the positive signal output end D+ of uplink USB connector chip UPPORT with And negative signal output end D- connection.

In one embodiment, the model of USB HUB chip U5 can be VL817.

In one embodiment, shown in Figure 11, the first USB output unit 51 includes: the first downlink USB connector core Piece DOWN1, the 15th capacitor C15, the 4th inductance L4, the 16th capacitor C16 and the 17th capacitor C17；

The first end of 15th capacitor C15, the first end of the 4th inductance L4 connect as the first USB output unit 51 altogether The second end of one direct-flow output signal output end 5V_DP1, the 4th inductance L4, the first end of eleventh resistor R11, the 16th electricity Hold the power end VCC of the first end of C16, the first end of the 17th capacitor C17 and the first downlink USB connector chip DOWN1, Second end, the second end of the 16th capacitor C16, the second end of the 17th capacitor C17 and the 11st electricity of 15th capacitor C15 The second end of resistance R11 is connected to ground altogether, and the downstream differential of the first downlink USB connector chip DOWN1 is to signal anode transmitting terminal TXP With downstream differential to signal cathode transmitting terminal TXN respectively with the transmission downstream differential of USB HUB chip U5 to the pin of signal SSTX1+, pin SSTX1- connection, the downstream differential of the first downlink USB connector chip DOWN1 is to signal anode transmitting terminal RXP With downstream differential to signal cathode receiving end RXN respectively with the transmission downstream differential of USB HUB chip U5 to the pin of signal SSRX1+, pin SSRX1- connection, the positive signal end D+ of the first downlink USB connector chip DOWN1 and negative signal end D- respectively with the positive signal end USBHP1+ and negative signal end USBHP1- of USB HUB chip U5, the first downlink USB connection The ground terminal GND of device chip DOWN1 is grounded.

In one embodiment, shown in Figure 12, the 2nd USB output unit 52 includes: the second downlink USB connector core Piece DOWN2, the 18th capacitor C18, the 5th inductance L5, twelfth resistor R12, the 19th capacitor C19 and the 20th capacitor C20；

The first end of 18th capacitor C18, the first end of the 5th inductance L5 connect as the 2nd USB output unit 51 altogether The second end of two direct-flow output signal output end 5V_DP2, the 5th inductance L5, the first end of twelfth resistor R12, the 19th electricity Hold the power end VCC of the first end of C19, the first end of the 20th capacitor C20 and the second downlink USB connector chip DOWN2, The second end of 15th capacitor, the second end of the 16th capacitor, the second end of the 17th capacitor and eleventh resistor second End is connected to ground altogether, and the downstream differential of the second downlink USB connector chip DOWN2 is to signal anode transmitting terminal TXP and downstream differential To signal cathode transmitting terminal TXN respectively with the transmission downstream differential of USB HUB chip U5 to pin SSTX2+, the pin of signal SSTX2- connection, the downstream differential of the second downlink USB connector chip DOWN2 is to signal anode transmitting terminal RXP and downstream differential To signal cathode receiving end RXN respectively with the transmission downstream differential of USB HUB chip U5 to pin SSRX2+, the pin of signal SSRX2- connection, the positive signal end D+ and negative signal end D- of the second downlink USB connector chip DOWN2 respectively with USB The positive signal end USBHP2+ and negative signal end USBHP2- of HUB chip U5, the first downlink USB connector chip DOWN1 Ground terminal GND ground connection.

In one embodiment, shown in Figure 13, the first fast charge unit 61 includes: the first fast charge chip U6, the 20th One capacitor C21, the 22nd capacitor C22, the 23rd capacitor C23, thirteenth resistor R13；

The first end of 21st capacitor C21, the first input end of the first fast charge chip U6, the first fast charge chip U6 Two input terminals are connected to the d. c. voltage signal output end P5V of DC voltage conversion module 20 altogether, and the second of the 21st capacitor C21 The ground terminal GND of end and the first fast charge chip U6 are connected to ground, enable signal end EN and USB the HUB core of the first fast charge chip U6 altogether The first switch power supply signal pin PWREN1 connection of piece U5, the first end of the 22nd capacitor C22, the first fast charge chip U6 First voltage output end OUT1, second voltage output end OUT2 and tertiary voltage output end OUT3 are connect altogether as the first fast charge list First fast charge DC signal output end 5V_DP11, the overcurrent protection input terminal OC and the 13rd of the first fast charge chip U6 of member 61 The first end of resistance R13 connects, and the first end of the second end of thirteenth resistor R13 and the 23rd capacitor C23 are connected to USB altogether The second end and the 23rd capacitor of the first overcurrent protection signal pins OVCUR1, the 22nd capacitor C22 of HUB chip U5 The second end of C23 is connected to ground altogether.

In one embodiment, the model of the first fast charge chip U6 can be G547E1P81U.

In one embodiment, shown in Figure 14, the second fast charge unit 62 includes: the second fast charge chip U7, the 20th Four capacitor C24, the 25th capacitor C25, the 14th resistance R14 and the 26th capacitor C26；

The first end of 24th capacitor C24, the first input end of the second fast charge chip U7, the second fast charge chip U7 Two input terminals are connected to the d. c. voltage signal output end P5V of DC voltage conversion module 20 altogether, and the second of the 24th capacitor C24 The ground terminal GND of end and the second fast charge chip U7 are connected to ground, enable signal end EN and USB the HUB core of the second fast charge chip U7 altogether The second switch power supply signal pin PWREN2 connection of piece U5, the first end of the 25th capacitor C25, the second fast charge chip U7 First voltage output end OUT1, second voltage output end OUT2 and tertiary voltage output end OUT3 are connect altogether as the second fast charge core The second fast charge DC signal output end 5V_DP21, the overcurrent protection input terminal OC and the 14th of the second fast charge chip U7 of piece U7 The first end of resistance R14 connects, and the first end of the second end of thirteenth resistor R13 and the 26th capacitor C26 are connected to USB altogether The second end and the 26th capacitor of the second overcurrent protection signal pins OVCUR2, the 25th capacitor C25 of HUB chip U5 The second end of C26 is connected to ground altogether.

In one embodiment, the model of the second fast charge chip U7 can be G547E1P81U.

In one embodiment, shown in Figure 15, the first over-current protecting unit 71 includes: the first fuse F1, the tenth Five resistance R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18 and second switch Q2；

The first end of first fuse F1 is connect with the d. c. voltage signal output end P5V of DC voltage conversion module 20, The second end of first fuse F1 and the first end of the 15th resistance R15 are connected to the first fast charge direct current of the first fast charge unit 61 altogether Second end, the first end and the 17th resistance of the 16th resistance R16 of signal output end 5V_DP11, the 15th resistance R15 The first end of R17 connects altogether, the second end ground connection of the 16th resistance R16, the second end and second switch Q2 of the 17th resistance R17 Control terminal connection, the current input terminal of second switch Q2 connect with the first end of the 18th resistance R18, second switch Q2 Current output terminal ground connection, the first overcurrent protection signal pins of the second end of the 18th resistance R18 and USB HUB chip U5 OVCUR1 connection.

In one embodiment, second switch Q2 is PNP type triode.

In one embodiment, shown in Figure 16, the second over-current protecting unit 72 includes: the second fuse F2, the tenth Nine resistance R19, the 20th resistance R20, the 21st resistance R21, the 22nd resistance R22 and third switching tube Q3；

The first end of second fuse F2 is connect with the d. c. voltage signal output end P5V of DC voltage conversion module 20, The second end of second fuse F2 and the first end of the 19th resistance F19 are connected to the second fast charge direct current of the second fast charge unit 72 altogether Second end, the first end and the 21st resistance of the 20th resistance R20 of signal output end 5V_DP21, the 19th resistance R19 The first end of R21 connects altogether, the second end ground connection of the 20th resistance R20, the second end and third switching tube of the 21st resistance R21 The control terminal of Q3 connects, the current output terminal ground connection of third switching tube Q3, the current input terminal and the 20th of third switching tube Q3 The first end of two resistance R22 connects, and the second end of the 22nd resistance R22 and the second overcurrent protection of USB HUB chip U5 are believed Number pin OVCUR2 connection.

In one embodiment, third switching tube Q3 can be PNP type triode.

In one embodiment, shown in Figure 17, anti-static module 80 includes: the 27th capacitor C27, the 28th Capacitor C28, the 29th capacitor C29, the 30th capacitor C30, the first common mode inductance CM1, the second common mode inductance CM2 and third Common mode inductance CM3；

The first input end of first common mode inductance CM1, the second input terminal respectively with the first uplink USB connector chip The upstream differential of UPPORT is to signal anode transmitting terminal TXP and upstream differential to signal cathode transmitting terminal TXN connection, the first common mode The first output end of inductance CM1, second output terminal pass through the 27th capacitor C27, the 28th capacitor C28 and USB respectively Pin SSTX0+ of the transmission upstream differential of HUB chip U5 to signal, pin SSTX0- connection, the of the second common mode inductance CM2 One input terminal, the second input terminal respectively the upstream differential with uplink USB connector chip UPPORT to signal anode receiving end RXP Signal cathode receiving end RXN is connect with upstream differential, the first output end of the second common mode inductance CM2, second output terminal difference It is connect by the 29th capacitor C29, the 30th capacitor C30 with pin SSRX0+, the pin SSRX0- of USB HUB chip U5, Third common mode inductance CM3 first input end, the second input terminal are defeated with the positive signal of uplink USB connector chip UPPORT respectively Outlet D+ and the D- connection of negative signal output end, the first output end of third common mode inductance CM3, second output terminal respectively with USB The pin HSD+ of HUB chip U5, pin HSD- connection.

In one embodiment, shown in Figure 18, the first electromagnetism interference module 81 include: the 31st capacitor C31, 32nd capacitor C32, the 33rd capacitor C33, the 34th capacitor C34, the 4th common mode inductance CM4, the 5th common mode inductance CM5 and the 6th common mode inductance CM6；

First input end, the second input terminal of 4th common mode inductance CM4 is poor with the transmission downlink of USB HUB chip U5 respectively Pin SSTX1+, pin SSTX1- connection point to signal, the first output end of the 4th common mode inductance CM4, second output terminal are divided Not by the downstream differential of the 30th capacitor C31, the 32nd capacitor C32 and the first downlink USB connector chip DOWN1 to letter Number anode transmitting terminal TXP and downstream differential to signal cathode transmitting terminal TXN connection, the first input end of the 5th common mode inductance CM5, Second input terminal is connect with pin SSRX1+, pin SSRX1- of the transmission downstream differential of USB HUB chip U5 to signal respectively, The first output end of 5th common mode inductance CM5, second output terminal pass through the 33rd capacitor C33, the 34th capacitor C34 respectively With the downstream differential of the first downlink USB connector chip DOWN1 to signal anode transmitting terminal RXP and downstream differential to signal cathode Receiving end RXN connection, the first input end of the 6th common mode inductance CM6, the second input terminal anode with USB HUB chip U5 respectively Signal end USBHP1+ and the USBHP1- connection of negative signal end, the first output end of the 6th common mode inductance CM6, second output terminal It is connect respectively with the positive signal end D+ and negative signal end D- of the first downlink USB connector chip DOWN1.

In one embodiment, shown in Figure 18, the second electromagnetism interference module 82 include: the 38th capacitor C38, 35th capacitor C35, the 36th capacitor C36, the 37th capacitor C37, the 7th common mode inductance CM7, the 8th common mode inductance CM8 and the 9th common mode inductance CM9；

First input end, the second input terminal of 7th common mode inductance CM7 is poor with the transmission downlink of USB HUB chip U5 respectively Pin SSTX2+, pin SSTX2- connection point to signal, the first output end of the 7th common mode inductance CM7, second output terminal are divided Not by the downstream differential pair of the 38th capacitor C38, the 35th capacitor C35 and the second downlink USB connector chip DOWN2 Signal anode transmitting terminal TXP and downstream differential are to signal cathode transmitting terminal TXN, the first input end of the 8th common mode inductance CM8, Two input terminals are connect with pin SSRX2+, pin SSRX2- of the transmission downstream differential of USB HUB chip U5 to signal respectively, the The first output end of eight common mode inductance CM8, second output terminal pass through respectively the 36th capacitor C36, the 37th capacitor C37 with The downstream differential of second downlink USB connector chip DOWN2 meets signal anode transmitting terminal RXP and downstream differential to signal cathode Receiving end RXN connection, first input end, the second input terminal of the 9th common mode inductance CM9 are believed with the anode of USB HUB chip U5 respectively The first output end of number end USBHP2+ and negative signal end USBHP2- connection, the 9th common mode inductance CM9, second output terminal are divided It is not connect with the positive signal end D+ and negative signal end D- of the second downlink USB connector chip DOWN2.

The embodiment of the present application also provides a kind of usb hubs for supporting quick-charge function, comprising:

Usb hub circuit as described in any of the above-described embodiment；And

The packaging body that the usb hub circuit is packaged.

The foregoing is merely the alternative embodiments of the application, not to limit the application, all essences in the application Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within mind and principle.

Claims

1. a kind of usb hub circuit, which is characterized in that connect with signal input module, the usb hub circuit includes:

DC voltage conversion module is connect with the signal input module, and the DC voltage conversion module is defeated to the signal The power supply signal for entering module output carries out voltage conversion, to export corresponding d. c. voltage signal；

USB input module is connect with the signal input module, and it is defeated that the USB input module receives the signal input module Bus voltage signal out, and corresponding upstream differential is exported to signal according to the bus voltage signal；

Usb hub control module is connect, the USB set with the USB input module and the DC voltage conversion module Line device control module receives the d. c. voltage signal and the upstream differential to signal, and according to the d. c. voltage signal and The upstream differential is to signal output multiple groups downstream differential to signal；

USB output module is connect with the usb hub control module, and it is poor that the USB output module receives downlink described in multiple groups Divide to signal, and by downstream differential described in multiple groups and corresponding multiple direct-flow output signals are converted to signal；And

Power management module is connect with the DC voltage conversion module, and the power management module believes the DC voltage Number be converted to multiple fast charge d. c. voltage signals.

2. usb hub circuit as described in claim 1, which is characterized in that the power management module includes:

First fast charge unit is connect with the DC voltage conversion module, and the first fast charge unit receives the DC voltage Signal, and the d. c. voltage signal is converted into the first fast charge d. c. voltage signal；And

Second fast charge unit is connect with the DC voltage conversion module, and the second fast charge unit receives the DC voltage Signal, and the d. c. voltage signal is converted into the second fast charge d. c. voltage signal.

3. usb hub circuit as claimed in claim 2, which is characterized in that the usb hub circuit further include:

First over-current protecting unit is connect with the DC voltage conversion module and the first fast charge unit respectively, and described One over-current protecting unit carries out overcurrent protection to the first fast charge d. c. voltage signal；And

Second over-current protecting unit is connect with the DC voltage conversion module and with the second fast charge unit respectively, described Second over-current protecting unit carries out overcurrent protection to the second fast charge d. c. voltage signal.

4. usb hub circuit as described in claim 1, which is characterized in that the USB output module includes:

First USB output unit is connect with the usb hub control module, described in the first USB output unit reception First downstream differential of usb hub control module output is converted to the to signal to signal, and by first downstream differential One direct-flow output signal；And

2nd USB output unit is connect with the usb hub control module, described in the 2nd USB output unit reception Second downstream differential of usb hub control module output is converted to the to signal to signal, and by second downstream differential Two direct-flow output signals.

5. usb hub circuit as claimed in claim 4, which is characterized in that the usb hub circuit further include:

First electromagnetism interference module is set between the usb hub control module and the first USB output unit, institute It states the first electromagnetism interference module and electromagnetism interference processing is carried out to signal to first downstream differential；

Second electromagnetism interference module is set between the usb hub control module and the 2nd USB output unit, institute It states the second electromagnetism interference module and electromagnetism interference processing is carried out to signal to second downstream differential.

6. usb hub circuit as described in claim 1, which is characterized in that the usb hub circuit further include:

Anti-static module is set between the USB input module and the usb hub control module, the anti-static module Electrostatic protection processing is carried out to signal to the upstream differential.

7. usb hub circuit as described in claim 1, which is characterized in that the DC voltage conversion module includes: power supply Chip, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, 9th resistance, the first inductance, first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th Capacitor, the 8th capacitor and the 9th capacitor；

The first end of the first capacitor, the first end of second capacitor, the first end of the first resistor and the electricity The power supply signal input of source chip is connected to the signal input module, the second end of the first capacitor and second electricity altogether The second end of appearance is connected to ground altogether, the second end of the first resistor, the first end of the second resistance, the third capacitor the One end is connected to the enable signal end of the power supply chip, the operating mode signal end of the power supply signal, the second resistance altogether Second end and the second end of the third capacitor be connected to ground, the output voltage signal monitoring side of the power supply chip and institute altogether State the first end connection of 3rd resistor, the second end of the 3rd resistor, the voltage signal end of the power supply chip and described The first end of 4th capacitor connects altogether, the second end of the 4th capacitor ground connection, the simulation earth signal end of the power supply chip and Power ground signal end is grounded, the voltage signal output end of the power supply chip, the first end of the 6th capacitor, described first The first end of inductance, the first end of the 7th capacitor, the first end of the 7th resistance, the first end of the 9th capacitor with And the first end of the 8th capacitor connects the d. c. voltage signal output end as the DC voltage conversion module, the electricity altogether Source chip is connect from boost signal end with the first end of the 4th resistance, the conversion signal end of the power supply chip, described The first end of the first end of 5th capacitor, the second end of first inductance and the 5th resistance connects altogether, the 5th electricity The second end of the second end of appearance and the 4th resistance, the second end of the 5th resistance, the second end of the 7th capacitor with And the first end of the 6th resistance connects altogether, it is the feedback signal terminal of the power supply signal, the second end of the 6th resistance, described The second end of 7th resistance and the first end of the 8th resistance connect altogether, the second end of the 8th resistance and the 9th electricity The first end of resistance connects, the second end ground connection of the 9th resistance, second end and the 8th capacitor of the 9th capacitor Second end is connected to ground altogether.

8. usb hub circuit as described in claim 1, which is characterized in that the USB input module includes: that uplink USB connects Connect device chip, the 11st capacitor, the 12nd capacitor and the second inductance；

The first end of second inductance, the first end of the 11st capacitor, the first end of the 12nd capacitor and institute The power end for stating uplink USB connector chip is connected to the signal input module, the uplink of the uplink USB connector chip altogether Differential pair signal anode transmitting terminal and upstream differential connect signal cathode transmitting terminal with the usb hub control module, The upstream differential of the uplink USB connector chip to signal anode receiving end and upstream differential to signal cathode receiving end with The usb hub control module connection, the positive signal output end and negative signal of the uplink USB connector chip are defeated Outlet is connect with the usb hub control module, the ground terminal ground connection of the uplink USB connector chip.

9. usb hub circuit as described in claim 1, which is characterized in that usb hub control module includes: USB HUB Chip, the 13rd capacitor, the 14th capacitor and third inductance；

The pin of USB HUB chip is connect with the first end of third inductance, and the first of the second end of third inductance, the 13rd capacitor The first end of end and the 14th capacitor is connected to the pin VCC11FB, pin VCCD4, pin VCC11_ of USB HUB chip altogether L0, pin VCC11_L3, pin VCCD1, pin VCC11_L2, pin VCC11M, pin VCCD3, to d. c. voltage signal It is filtered, the second end of the 13rd capacitor and the second end of the 14th capacitor connect altogether.

10. a kind of usb hub characterized by comprising

Such as the described in any item usb hub circuits of claim 1-9；And

The packaging body that the usb hub circuit is packaged.