CN207251191U - A kind of mobile terminal protects structure - Google Patents
A kind of mobile terminal protects structure Download PDFInfo
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- CN207251191U CN207251191U CN201721127518.7U CN201721127518U CN207251191U CN 207251191 U CN207251191 U CN 207251191U CN 201721127518 U CN201721127518 U CN 201721127518U CN 207251191 U CN207251191 U CN 207251191U
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- interface
- differential signal
- mobile terminal
- serial bus
- module
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Abstract
The utility model embodiment provides a kind of mobile terminal protection structure.The mobile terminal includes power management chip and central processing unit, and the power management chip includes interface protection module；One end of the interface protection module connects the differential signal outputs of the Universal Serial Bus Interface outside the mobile terminal, and the other end of the interface protection module connects the differential signal input of the central processing unit；The interface protection module, for receiving the differential signal of the Universal Serial Bus Interface output, and the differential signal is inputted to the central processing unit.When high direct voltage or surge are appeared on the differential signal outputs of Universal Serial Bus Interface; power management chip can reduce voltage, decay surge; so as to protecting the pin of central processing unit without damage, avoid causing mobile terminal from being unable to data communication or the failure phenomenon such as cannot start shooting.
Description
Technical field
Communication technique field is the utility model is related to, structure is protected more particularly to a kind of mobile terminal.
Background technology
Universal Serial Bus (Universal Serial Bus, USB) is connect computer system and external equipment one
Kind serial bus standard, and a kind of technical specification of input/output interface, are widely used in PC and movement is set
The information communication product such as standby.USB interface has plug and play and warm connection function.Data communication interface is served not only as, while
It is the charging interface of mobile communication equipment.
Be in the prior art USB interface differential signal outputs D+ and D- directly with the CPU in mobile terminal
(Central Processing Unit, central processing unit) pin is connected, when high voltage direct current and surge are from the difference of USB interface
High voltage direct current and surge directly can be delivered to CPU pins, cause CPU pins to burn out, make into fashionable by signal output part D+ and D-
Data communication is unable into mobile terminal or the failure phenomenon such as cannot start shooting.
Utility model content
The utility model embodiment provides a kind of mobile terminal protection structure, is connect with solving high voltage direct current and surge from USB
The problem of mouth burns out mobile terminal CPU pins, causes mobile terminal to damage into mobile terminal.
To solve the above-mentioned problems, the utility model discloses a kind of mobile terminal to protect structure, the mobile terminal bag
Power management chip and central processing unit are included, the power management chip includes interface protection module；
One end of the interface protection module connects the difference letter of the Universal Serial Bus Interface outside the mobile terminal
Number output terminal, the other end of the interface protection module connect the differential signal input of the central processing unit；The interface
Protection module, for receiving the differential signal of the Universal Serial Bus Interface output, and the differential signal is inputted to institute
State central processing unit.
Alternatively, the power management chip further includes protocol detection module；
The protocol detection module connects the interface protection module；The protocol detection module, for being connect according to
The differential signal that mouth protection module receives, detects the charge protocol of the Universal Serial Bus Interface.
Alternatively, the interface protection module connects the external equipment identification end of the Universal Serial Bus Interface.
Alternatively, the power management chip further includes charging module；
One end of the charging module connects the voltage output end of the Universal Serial Bus Interface, the charging module
The other end connects the battery in the mobile terminal；The charging module, for receiving the Universal Serial Bus Interface output
Voltage, and for the battery charge.
Alternatively, the differential signal of the Signal interface module in the interface protection module connection central processing unit is defeated
Enter end.
Compared with prior art, the utility model embodiment includes advantages below：
In the utility model embodiment, mobile terminal includes power management chip and central processing unit, power management chip
Including interface protection module；The difference letter of Universal Serial Bus Interface outside one end connection mobile terminal of interface protection module
Number output terminal, the differential signal input of the other end connection central processing unit of interface protection module；Interface protection module receives
The differential signal of Universal Serial Bus Interface output, and differential signal is inputted to central processing unit.When high direct voltage or wave
When gushing out on the differential signal outputs of serial bus interface generally used now, power management chip can reduce voltage, decay wave
Gush, so as to protect the pin of central processing unit without damage, avoid causing mobile terminal to be unable to data communication or cannot start shooting
Deng failure phenomenon.
Brief description of the drawings
Fig. 1 shows a kind of one of structure diagram of mobile terminal protection structure of the utility model；
Fig. 2 shows a kind of second structural representation of mobile terminal protection structure of the utility model.
Embodiment
To enable the above-mentioned purpose of the utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
Mobile terminal protection structure provided by the utility model is discussed in detail below by specific embodiment.
Fig. 1 shows a kind of mobile terminal protection structure provided by the utility model.
The mobile terminal includes power management chip 10 and central processing unit 20, and the power management chip 10 includes connecing
Mouth protection module 101.
One end of the interface protection module 101 connects the difference of the Universal Serial Bus Interface 30 outside the mobile terminal
Sub-signal output terminal D+ and D-, the other end of the interface protection module 101 connect the differential signal of the central processing unit 20
Input terminal DM and DP；The interface protection module 101, the difference letter exported for receiving the Universal Serial Bus Interface 30
Number, and the differential signal is inputted to the central processing unit 20.
In the present embodiment, mobile terminal includes power management chip (Power Management Integrated
Circuit, PMIC) 10 and central processing unit 20, power management chip 10 is typically the simulation prepared using 180nm making technologies
Integrated circuit；Central processing unit 20 is using more advanced making technology, such as 8nm, 16nm, 14nm, 10nm.Due to power supply
The line width of managing chip 10 is larger, therefore horizontal with stronger resistance to voltage levels and antisurge.Universal Serial Bus Interface is usual
With 5 ports：Power output end VBUS, differential signal outputs D+ and D-, external equipment identification end ID, ground terminal GND.Its
Middle power output end VBUS can be that mobile terminal charges, and differential signal outputs D+ and D- can realize data communication and charging
The detection of agreement, the equipment that external equipment identification end ID can identify exterior insertion.
Power management chip 10 includes interface protection module 101,101 one end connection universal universal serial bus of interface protection module
The differential signal outputs D+ and D- of interface 30, the other end connect the differential signal input DM and DP of central processing unit 20.Connect
Mouth protection module 101 receives the differential signal that Universal Serial Bus Interface 30 exports, and differential signal is inputted to central processing
Device 20, realizes the communication between Universal Serial Bus Interface 30 and central processing unit 20.When high direct voltage or surge occur
When on the differential signal outputs D+ and D- of Universal Serial Bus Interface, high pressure and surge initially enter power management chip
10, power management chip can reduce DC voltage, surge of decaying, during the voltage after reduction and the surge after decay are transmitted to
The differential signal input of central processor 20, so as to protect central processing unit 20 without damage.
Preferably, the mobile terminal protection structure with reference to shown in Fig. 2, the power management chip 10 further include protocol detection
Module 102.
The protocol detection module 102 connects the interface protection module 101；The protocol detection module 102, for root
The differential signal received according to the interface protection module 101, detects the charging association of the Universal Serial Bus Interface 30
View.
In the present embodiment, power management chip 10 further includes protocol detection module 102, and protocol detection module 102 connects
Mouth protection module 101.Interface protection module 101 receives differential signal from Universal Serial Bus Interface 30, by differential signal transmission
To protocol detection module 102, the charging that protocol detection module 102 detects Universal Serial Bus Interface 30 according to differential signal is assisted
View.After the charge protocol of mobile terminal detection Universal Serial Bus Interface 30, suitable charging can be selected according to charge protocol
Mode, for example, high-voltage charging or low pressure can be selected to charge, can also select large current charge or common current to charge.Pass through
Interface protection module 101 gives 102 differential signal transmission of protocol detection module, reduces protocol detection module 102 and general serial
Line between bus interface 30, optimizes cabling.
Preferably, the mobile terminal protection structure with reference to shown in Fig. 2, the interface protection module 101 connects described general
The external equipment identification end ID of serial bus interface 30.
In the present embodiment, after the external equipment identification end ID of mobile terminal connection universal serial bus interface 30, general string
Row bus interface 30 will recognise that whether mobile terminal belongs to external equipment.The external equipment of usual Universal Serial Bus Interface 30
Identification end ID can connect the GPIO (General Purpose Input Output, universal input/output) of central processing unit 20
Port, identifies end ID using the external equipment of 101 connection universal serial bus interface 30 of interface protection module, reduces outside and set
Line between standby identification end ID and central processing unit 20.
Preferably, the mobile terminal protection structure with reference to shown in Fig. 2, the power management chip 10 further include charging module
103；
One end of the charging module 103 connects the voltage output end VBUS of the Universal Serial Bus Interface 30, described
The other end of charging module 103 connects the battery 40 in the mobile terminal；The charging module 103 is described logical for receiving
The voltage exported with serial bus interface 30, and charge for the battery 40.
In the present embodiment, power management chip 10 further includes charging module 103, and charging module 103 is connected to general serial
Between battery 40 in the voltage output end VBUS and mobile terminal of bus interface 30.Protocol detection module 102 detects general string
After the charge protocol of row bus interface 30, it is defeated that charging module 103 can receive Universal Serial Bus Interface 30 according to charge protocol
The voltage gone out, selects suitable charging modes to charge for battery 40.
Preferably, the mobile terminal protection structure with reference to shown in Fig. 2, the interface protection module 101 connect the center
The differential signal input DM and DP of Signal interface module 201 in processor 20.
In the present embodiment, multiple modules, such as Signal interface module 201 are included in central processing unit 20.Signaling interface mould
The differential signal input DM and DP connecting interface protection module 101 of block 201, is transmitted for receiving interface protection module 101
Differential signal.
In conclusion in the utility model embodiment, mobile terminal includes power management and central processor core, power supply
Managing chip includes interface protection module；Universal Serial Bus Interface outside one end connection mobile terminal of interface protection module
Differential signal outputs, interface protection module the other end connection central processing unit differential signal input；Interface protection
Module receives the differential signal of Universal Serial Bus Interface output, and differential signal is inputted to central processing unit.When direct current height
When pressure or surge are appeared on the differential signal outputs of Universal Serial Bus Interface, power management chip can reduce electricity
Pressure, surge of decaying, so as to protect the pin of central processing unit without damage, avoid causing mobile terminal be unable to data communication or
The failure phenomenon such as cannot start shooting.
A kind of mobile terminal protection structure provided above the utility model embodiment, is described in detail, this
Apply specific case in text to be set forth the principle and embodiment of the utility model, the explanation of above example is
It is used to help understand the method and its core concept of the utility model；Meanwhile for those of ordinary skill in the art, according to this
The thought of utility model, there will be changes in specific embodiments and applications, in conclusion this specification content
It should not be construed as the limitation to the utility model.
Claims (5)
1. a kind of mobile terminal protects structure, it is characterised in that the mobile terminal includes power management chip and central processing
Device, the power management chip include interface protection module；
The differential signal that one end of the interface protection module connects the Universal Serial Bus Interface outside the mobile terminal is defeated
Outlet, the other end of the interface protection module connect the differential signal input of the central processing unit；The interface protection
Module, inputs in described for receiving the differential signal of Universal Serial Bus Interface output, and by the differential signal
Central processor.
2. protection structure according to claim 1, it is characterised in that the power management chip further includes protocol detection mould
Block；
The protocol detection module connects the interface protection module；The protocol detection module, for being protected according to the interface
The differential signal that shield module receives, detects the charge protocol of the Universal Serial Bus Interface.
3. protection structure according to claim 1, it is characterised in that the interface protection module connects the general serial
The external equipment identification end of bus interface.
4. protection structure according to claim 1, it is characterised in that the power management chip further includes charging module；
One end of the charging module connects the voltage output end of the Universal Serial Bus Interface, the charging module it is another
End connects the battery in the mobile terminal；The charging module, for receiving the electricity of the Universal Serial Bus Interface output
Pressure, and charge for the battery.
5. protection structure according to claim 1, it is characterised in that the interface protection module connects the central processing
The differential signal input of Signal interface module in device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127518.7U CN207251191U (en) | 2017-09-04 | 2017-09-04 | A kind of mobile terminal protects structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721127518.7U CN207251191U (en) | 2017-09-04 | 2017-09-04 | A kind of mobile terminal protects structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207251191U true CN207251191U (en) | 2018-04-17 |
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ID=61885079
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721127518.7U Active CN207251191U (en) | 2017-09-04 | 2017-09-04 | A kind of mobile terminal protects structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638917A (en) * | 2018-12-20 | 2019-04-16 | 上海艾为电子技术股份有限公司 | Charging circuit and electronic equipment |
-
2017
- 2017-09-04 CN CN201721127518.7U patent/CN207251191U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638917A (en) * | 2018-12-20 | 2019-04-16 | 上海艾为电子技术股份有限公司 | Charging circuit and electronic equipment |
| CN109638917B (en) * | 2018-12-20 | 2023-10-13 | 上海艾为电子技术股份有限公司 | Charging circuit and electronic equipment |
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