CN205921359U - USBType female first intellectual detection system of C interface and protection circuit - Google Patents
USBType female first intellectual detection system of C interface and protection circuit Download PDFInfo
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- CN205921359U CN205921359U CN201620664681.6U CN201620664681U CN205921359U CN 205921359 U CN205921359 U CN 205921359U CN 201620664681 U CN201620664681 U CN 201620664681U CN 205921359 U CN205921359 U CN 205921359U
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Abstract
The utility model relates to a USBType female first intellectual detection system of C interface and protection circuit, this circuit include female first pin, CC control chip, protection detection module, is CC control chip used for USB type C's logical detection & controling, protection detection module includes that short circuit detection module, test voltage control module and CC control chip make the ability module, short -circuit detection module is used for detecting the voltage or the electric current of female first pin, short -circuit detection module can be closed, the test voltage control module be used for to VBUS provide voltage, and CC control chip makes and the module to be used for making ability CC control chip. The utility model discloses a can USB type be realized to the circuit the intellectual detection system and the protection of the female head of C interface, furthest prevents that the damage that the short circuit led to the fact from taking place, simultaneously, the last influence that reduces port communication of furthest.
Description
Technical field
This utility model is related to a kind of usb type-c interface female Intelligent Measurement and protection circuit.
Background technology
Type-c is a kind of connecting interface of usb interface, all pluggable regardless of tow sides, size about 8.3mm ×
2.5mm, the function such as the charging of supporting usb standard the same with other interfaces, data transfer, display output.Type-c is by usb
Implementers forum formulates, and obtained in 2014 and starts to popularize after the manufacturers such as Fructus Mali pumilae, Google, Intel, Microsoft support.
On August 1st, 2015, special section core is proposed the mobile solid state hard disc of first type-c interface global.On October 10th, 2015, ferrum prestige
Horse releases first usb 3.1 type-c interface disk array global.
Sb type-c interface has the characteristics that miniaturization, stitch dense arrangement, and stitch voltage range changes greatly simultaneously,
Cc foot therein, tx/rx, dp/dm foot and sbu foot support 5v running voltage, and vbus foot highest can support 20v.Cause
This, when there is contamination it is easy to short-circuit conditions, leading to the high voltage on vbus to occur on other 5v pins, causing
Interface and device damage.
Existing passive protection scheme can add a high voltage transistor in pin, and additional voltage is higher than certain threshold value
When, close this high voltage transistor, thus isolating high pressure.
Existing passive protection scheme can bring very big parasitic capacitance on pin, thus affecting tx/tx, dp/dm etc.
The maximum communication speed of communications pins.Generally tx/rx needs to support the signal rate of 5gbps, and dp/dm needs to support 480mbps
Signal rate.
Utility model content
In order to solve above-mentioned technical problem, this utility model provide a kind of usb type-c interface female Intelligent Measurement and
Protection circuit, this circuit includes female pin, cc control chip, protection detection module, and described cc control chip is used for usb
The logic detection of type-c and control, described protection detection module includes short-circuit detecting module, test voltage control module and cc
Control chip enables module, and described short-circuit detecting module is used for detecting voltage or the electric current of female pin, described short-circuit detecting mould
Block can be closed, and described test voltage control module is used for providing voltage to vbus, and cc control chip enables module and is used for enabling
Cc control chip.
Described female pin includes vbus pin, cc pin, dp pin, dm pin, sbu1 pin, sbu2 pin, rx2+
Pin, rx2- pin, tx1- pin, tx1+ pin, tx2+ pin, tx2- pin, rx1+ pin, rx1- pin.
Described test voltage control module is used for providing at least one voltage to vbus pin.
Described protection detection module also include alarm module, described alarm module according to short-circuit detecting module detect short
Road information, is reported to the police to primary processor by fault signal, and warning message is prompted to user it is desirable to being checked or keeping in repair.
A kind of usb equipment, described usb equipment includes aforesaid circuit.
A kind of electronic equipment, described electronic equipment includes aforesaid usb equipment.
A kind of usb type-c interface female Intelligent Measurement and guard method, usb type-c interface female includes female and draws
Foot, cc control chip, protection detection module, described cc control chip is used for logic detection and the control of usb type-c, described
Protection detection module includes short-circuit detecting module, test voltage control module and cc control chip and enables module, described short circuit inspection
Survey module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, described test voltage controls
Module is used for providing voltage to vbus, and cc control chip enables module and is used for enabling cc control chip；
Close cc control chip, a voltage source vtest is added on vbus；
Detect the voltage vsense or electric current isense of at least one pin;
Judge whether that voltage or the electric current of two pins are identical；
If existing, remain turned-off cc control chip, disconnection detection circuit；If not existing, enabling cc control chip, breaking
Open testing circuit.
The described method using the short circuit of detection voltage vtest test pin it is also possible to replace with using current source itest or
Other method for detecting short circuit.
Described detection and guard method also include alarming step:
The short circuit information being detected according to short-circuit detecting module, is reported to the police to primary processor by fault signal, and will alert
Information alert is to user it is desirable to being checked or keeping in repair.
A kind of usb type-c interface female Intelligent Measurement and guard method, usb type-c interface female includes female and draws
Foot, cc control chip, protection detection module, described cc control chip is used for logic detection and the control of usb type-c, described
Protection detection module includes short-circuit detecting module, test voltage control module and cc control chip and enables module, described short circuit inspection
Survey module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, described test voltage controls
Module is used for providing voltage to vbus, and cc control chip enables module and is used for enabling cc control chip；
Close cc control chip, and several different voltage source vtest are added on vbus；
Detect the voltage vsense or electric current isense of at least one pin;
Judge whether the voltage of two pins or electric current be always maintained at identical；
If existing, remain turned-off cc control chip, disconnection detection circuit；If not existing, enabling cc control chip, breaking
Open testing circuit.
Described detection and guard method also include alarming step:
The short circuit information being detected according to short-circuit detecting module, is reported to the police to primary processor by fault signal, and will alert
Information alert is to user it is desirable to being checked or keeping in repair.
Circuit of the present utility model and method can realize Intelligent Measurement and the protection of usb type-c interface female, maximum
Limit prevents the damage that short circuit causes from occurring, meanwhile, the upper impact reducing to port communication to greatest extent.
It is more readily understood the above-mentioned of the application and other features, aspect and advantage with reference to described further below.
Brief description
Fig. 1 is the schematic diagram of detection and protection circuit.
Specific embodiment
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
The accompanying drawing of type embodiment, is clearly and completely described to the technical scheme of this utility model embodiment.Obviously, described
Embodiment is a part of embodiment of the present utility model, rather than whole embodiments.Based on described of the present utility model
Embodiment, all other embodiment that those of ordinary skill in the art are obtained on the premise of without creative work, all belong to
Scope in this utility model protection.
Unless otherwise defined, technical term used herein or scientific terminology should be in this utility model art
There is the ordinary meaning that the personage of general technical ability is understood.Make in this utility model patent application specification and claims
" first ", " second " and similar word are not offered as any order, quantity or importance, and are used only to distinguish
Different ingredients.Equally, the similar word such as " one " or " " does not indicate that quantity limits yet, but represents and exist at least
One.
A kind of usb type-c interface female Intelligent Measurement and protection circuit, this circuit includes female pin, cc controls core
Piece, protection detection module, described cc control chip is used for logic detection and the control of usb type-c, described protection detection module
Enable module including short-circuit detecting module, test voltage control module and cc control chip, described short-circuit detecting module is used for examining
Survey the voltage of female pin or electric current, described short-circuit detecting module can be closed, described test voltage control module be used for
Vbus provides voltage, and cc control chip enables module and is used for enabling cc control chip.Described female pin includes vbus pin, cc
Pin, dp pin, dm pin, sbu1 pin, sbu2 pin, rx2+ pin, rx2- pin, tx1- pin, tx1+ pin, tx2+
Pin, tx2- pin, rx1+ pin, rx1- pin.
As a kind of preferred technical scheme, test voltage control module described in the utility model is used for carrying to vbus pin
For at least one voltage.
As a kind of preferred technical scheme, described protection detection module described in the utility model also includes alarm module,
The short circuit information that described alarm module detects according to short-circuit detecting module, is reported to the police to primary processor by fault signal, and will
Warning message is prompted to user it is desirable to being checked or keeping in repair.
This utility model also provides a kind of usb equipment, and described usb equipment includes aforesaid circuit.
This utility model also provides a kind of electronic equipment, and described electronic equipment includes aforesaid usb equipment.
A kind of usb type-c interface female Intelligent Measurement and guard method, usb type-c interface female includes female and draws
Foot, cc control chip, protection detection module, described cc control chip is used for logic detection and the control of usb type-c, described
Protection detection module includes short-circuit detecting module, test voltage control module and cc control chip and enables module, described short circuit inspection
Survey module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, described test voltage controls
Module is used for providing voltage to vbus, and cc control chip enables module and is used for enabling cc control chip；
Close cc control chip, a voltage source vtest is added on vbus；
Detect the voltage vsense or electric current isense of at least one pin;
Judge whether that voltage or the electric current of two pins are identical；
If existing, remain turned-off cc control chip, disconnection detection circuit；If not existing, enabling cc control chip, breaking
Open testing circuit.
Described detection and guard method also include alarming step:
The short circuit information being detected according to short-circuit detecting module, is reported to the police to primary processor by fault signal, and will alert
Information alert is to user it is desirable to being checked or keeping in repair.
As a kind of preferred technical scheme, this utility model can add different several voltage sources on vbus
Vtest, judges whether the voltage of two pins or electric current is always maintained at identical, if existing, remaining turned-off cc and controlling core
Piece, disconnection detection circuit；If not existing, enable cc control chip, disconnection detection circuit.
Specifically, detection of the present utility model and protection circuit execution following steps:
1. go up electrical testing one: during device power, within a very short time, a specific voltage is added on vbus
Source vtest, such as 1.2v.Meanwhile, cc, dp/dm, rx/tx and sbu pin vsense are measured.In normal operating conditions, this
Will not be short-circuit between a little pins, therefore should measure different voltages.If measuring same voltage, then illustrate there is short circuit
Phenomenon.
2. go up electrical testing two: in order to exclude the occasionality in test, change the voltage in test voltage source, surveyed again
Examination.Process ibid electrical testing one step.
3. judge and report to the police: if after multiple test, confirming there is short circuit phenomenon, enable type-c can be suspended
Controller, and reported to the police to primary processor by fault signal, and warning message is prompted to user it is desirable to be checked
Or maintenance, prevent from damaging generation.
4. normal work: test through multiple, really there is no short circuit phenomenon, enable type-c controller, permissible
Set up type-c to connect, equipment normal work.
Circuit of the present utility model and method can realize Intelligent Measurement and the protection of usb type-c interface female, maximum
Limit prevents the damage that short circuit causes from occurring, meanwhile, the upper impact reducing to port communication to greatest extent.
Embodiment 1
A kind of usb type-c interface female Intelligent Measurement and protection circuit, with cc, as a example dp/dm, sbu1/sbu2, Fig. 1
In cc_con/dp_con/dm_con/sbu1_con/sbu2_con represent pin in usb type-c female, cc_int/
Dp_int/dm_int/sbu1_int/sbu2_int represents internal or opposite side female pin.The female pin of this interface
Including vbus pin, cc pin cc_con, dp pin dp_con, dm pin dm_con, sbu1 pin sbu1_con, sbu2 pin
Sbu2_con, each female pin has corresponding inside or the pin of opposite side female to be respectively cc_int, dp_int, dm_
Int, sbu1_int, sbu2_int, this circuit includes female pin, cc control chip type-c controller, protection detection
Module protection detection, cc control chip type-c controller is used for the logic detection of usb type-c
With control, detection module protection detection is protected to include short-circuit detecting module, test voltage control module and cc
Control chip enables module, and described short-circuit detecting module is used for detecting voltage or the electric current of female pin, short-circuit detecting module can
It is closed, test voltage control module is used for providing voltage to vbus, cc control chip enables module and is used for enabling cc control core
Piece.
During beginning, close cc control chip, the voltage vtest that a voltage source is 1.2v is added on vbus；
Detect the voltage vsense of at least one pin;
Judge whether that the voltage of two pins is identical；
If existing, remain turned-off cc control chip, disconnection detection circuit；If not existing, enabling cc control chip, breaking
Open testing circuit.
Embodiment 2
A kind of usb type-c interface female Intelligent Measurement and protection circuit, with cc, as a example dp/dm, sbu1/sbu2, Fig. 1
In cc_con/dp_con/dm_con/sbu1_con/sbu2_con represent pin in usb type-c female, cc_int/
Dp_int/dm_int/sbu1_int/sbu2_int represents internal or opposite side female pin.The female pin of this interface
Including vbus pin, cc pin cc_con, dp pin dp_con, dm pin dm_con, sbu1 pin sbu1_con, sbu2 pin
Sbu2_con, each female pin has corresponding inside or the pin of opposite side female to be respectively cc_int, dp_int, dm_
Int, sbu1_int, sbu2_int, this circuit includes female pin, cc control chip type-c controller, protection detection
Module protection detection, cc control chip type-c controller is used for the logic detection of usb type-c
With control, detection module protection detection is protected to include short-circuit detecting module, test voltage control module and cc
Control chip enables module, and described short-circuit detecting module is used for detecting voltage or the electric current of female pin, short-circuit detecting module can
It is closed, test voltage control module is used for providing voltage to vbus, cc control chip enables module and is used for enabling cc control core
Piece.
During beginning, close cc control chip, the voltage vtest that a voltage source is 1.2v and 3v is continuously added on vbus；
Detect the voltage vsense of at least one pin;
Judge whether two pins voltage be always maintained at identical；
If existing, remaining turned-off cc control chip, disconnection detection circuit, being reported to the police to primary processor by fault signal,
And warning message is prompted to user it is desirable to being checked or keeping in repair；If not existing, enable cc control chip, disconnection detection
Circuit.
The above, preferred embodiment only of the present utility model, it is not intended to limit protection of the present utility model
Scope.Every impartial change done according to this utility model content and modification, are encompassed by the scope of the claims of the present utility model
Interior.
Claims (4)
1. a kind of usb type-c interface female Intelligent Measurement and protection circuit, described circuit includes female pin, cc controls core
Piece, protection detection module, described cc control chip is used for logic detection and the control of usb type-c, described protection detection module
Enable module including short-circuit detecting module, test voltage control module and cc control chip, described short-circuit detecting module is used for examining
Survey the voltage of female pin or electric current, described short-circuit detecting module can be closed, described test voltage control module be used for
Vbus provides voltage, and cc control chip enables module and is used for enabling cc control chip.
2. usb type-c interface female Intelligent Measurement according to claim 1 and protection circuit are it is characterised in that described
Female pin includes vbus pin, cc pin, dp pin, dm pin, sbu1 pin, sbu2 pin, rx2+ pin, rx2- draw
Foot, tx1- pin, tx1+ pin, tx2+ pin, tx2- pin, rx1+ pin, rx1- pin.
3. usb type-c interface female Intelligent Measurement according to claim 1 and protection circuit are it is characterised in that described
Test voltage control module is used for providing at least one voltage to vbus pin.
4. usb type-c interface female Intelligent Measurement according to claim 1 and protection circuit are it is characterised in that described
Protection detection module also includes alarm module, the short circuit information that described alarm module detects according to short-circuit detecting module, passes through
Fault signal is reported to the police to primary processor, and warning message is prompted to user it is desirable to being checked or keeping in repair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620664681.6U CN205921359U (en) | 2016-06-30 | 2016-06-30 | USBType female first intellectual detection system of C interface and protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620664681.6U CN205921359U (en) | 2016-06-30 | 2016-06-30 | USBType female first intellectual detection system of C interface and protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205921359U true CN205921359U (en) | 2017-02-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620664681.6U Active CN205921359U (en) | 2016-06-30 | 2016-06-30 | USBType female first intellectual detection system of C interface and protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205921359U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026006A (en) * | 2016-06-30 | 2016-10-12 | 成绎半导体技术（上海）有限公司 | USB Type-C interface female head intelligent detection and protection circuit |
| CN108051697A (en) * | 2017-12-18 | 2018-05-18 | 广东欧珀移动通信有限公司 | Test device |
-
2016
- 2016-06-30 CN CN201620664681.6U patent/CN205921359U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026006A (en) * | 2016-06-30 | 2016-10-12 | 成绎半导体技术（上海）有限公司 | USB Type-C interface female head intelligent detection and protection circuit |
| CN106026006B (en) * | 2016-06-30 | 2019-07-16 | 成绎半导体技术（上海）有限公司 | A kind of USB Type-C interface female intelligent measurement and protection circuit |
| CN108051697A (en) * | 2017-12-18 | 2018-05-18 | 广东欧珀移动通信有限公司 | Test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200729 Address after: Room 3001 and 3002, No. 3000, Zhongshan North Road, Putuo District, Shanghai, 200063 Patentee after: Daker (Shanghai) Electronic Technology Co.,Ltd. Address before: 201000 Shanghai city Pudong New Area Jing Road No. 498 Building No. 19 room 205A Patentee before: CHENGYI SEMICONDUCTORS SHANGHAI Co.,Ltd. |
|
| TR01 | Transfer of patent right |