CN106026006A - USB Type-C interface female head intelligent detection and protection circuit - Google Patents
USB Type-C interface female head intelligent detection and protection circuit Download PDFInfo
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- CN106026006A CN106026006A CN201610492815.5A CN201610492815A CN106026006A CN 106026006 A CN106026006 A CN 106026006A CN 201610492815 A CN201610492815 A CN 201610492815A CN 106026006 A CN106026006 A CN 106026006A
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- module
- pin
- control chip
- circuit
- voltage
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention relates to a USB Type-C interface female head intelligent detection and protection circuit. The circuit comprises a female head pin, a CC control chip and a protection and detection module. The CC control chip is used for USB Type-C logic detection and control. The protection and detection module comprises a short circuit detection module, a test voltage control module and a CC control chip enabling module. The short circuit detection module is used for detecting voltage or current of the female head pin. The short circuit detection module can be turned off. The test voltage control module is used for supplying voltage to a VBUS. The CC control chip enabling module is used for enabling the CC control chip. According to the circuit, intelligent detection and protection of a USB Type-C interface female head can be realized, damage caused by short circuit can be prevented to the greatest extent and influence on port communication can be reduced to the greatest extent.
Description
Technical field
The present invention relates 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 can be inserted into regardless of tow sides, size be about 8.3mm ×
2.5mm, the same with other interfaces supports the charging of USB standard, data transmission, the display function such as output.Type-C is by USB
Implementers Forum formulates, and obtained after the manufacturers such as Fructus Mali pumilae, Google, Intel, Microsoft support in 2014 and starts to popularize.
On August 1st, 2015, special section core is proposed the mobile solid state hard disc of first Type-C interface of the whole world.On October 10th, 2015, ferrum prestige
Horse releases first USB 3.1 Type-C interface disk array of the whole world.
SB Type-C interface has the feature of 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 is the highest can support 20V.Cause
, in this when there is contamination, it is easy to short-circuit conditions occurs, causes the high voltage on VBUS to occur on other 5V pins, cause
Interface and device damage.
Existing passive protection scheme can add a high voltage transistor at pin, and additional voltage is higher than certain threshold value
Time, close this high voltage transistor, thus isolate high pressure.
The communications such as existing passive protection scheme can bring the biggest parasitic capacitance on pin, thus affects TX/TX, DP/DM
The maximum communication speed of pin.Generally TX/RX needs to support the letter that the signal rate of 5Gbps, DP/DM need to support 480Mbps
Number speed.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides 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 Type-C
Logic detection and control, described protection detection module includes that short-circuit detecting module, test voltage control module and CC control core
Sheet enables module, and described short-circuit detecting module is for detecting voltage or the electric current of female pin, and described short-circuit detecting module can quilt
Closing, described test voltage control module is 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 for providing at least one voltage to VBUS pin.
Described protection detection module also includes 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 check or keep in repair.
A kind of USB device, described USB device includes aforesaid circuit.
A kind of electronic equipment, described electronic equipment includes aforesaid USB device.
A kind of USB Type-C interface female Intelligent Measurement and guard method, USB Type-C interface female includes that female is drawn
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 that short-circuit detecting module, test voltage control module and CC control chip enable module, described short circuit inspection
Surveying module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, and described test voltage controls
Module is for providing voltage to VBUS, and CC control chip enables module and is used for enabling CC control chip；
Close CC control chip, VBUS adds a voltage source Vtest；
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, then remain turned-off CC control chip, disconnection detection circuit；If not existing, then enable CC control chip, disconnect inspection
Slowdown monitoring circuit.
Described use detection voltage Vtest test pin short circuit method, it is also possible to replace with employing current source Itest or
Other method for detecting short circuit.
Described detection and guard method also include alarming step:
The short circuit information detected according to short-circuit detecting module, is reported to the police to primary processor by Fault signal, and by warning message
It is prompted to user, it is desirable to check or keep in repair.
A kind of USB Type-C interface female Intelligent Measurement and guard method, USB Type-C interface female includes that female is drawn
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 that short-circuit detecting module, test voltage control module and CC control chip enable module, described short circuit inspection
Surveying module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, and described test voltage controls
Module is for providing voltage to VBUS, and CC control chip enables module and is used for enabling CC control chip；
Close CC control chip, and on VBUS, add several different voltage source Vtest；
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 always maintained at identical；
If existing, then remain turned-off CC control chip, disconnection detection circuit；If not existing, then enable CC control chip, disconnect inspection
Slowdown monitoring circuit.
Described detection and guard method also include alarming step:
The short circuit information detected according to short-circuit detecting module, is reported to the police to primary processor by Fault signal, and by warning message
It is prompted to user, it is desirable to check or keep in repair.
The circuit of the present invention and method can realize Intelligent Measurement and the protection of USB Type-C interface female, to greatest extent
The damage preventing short circuit from causing occurs, meanwhile, and the upper impact reduced 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.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of detection and protection circuit.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this
Bright a part of embodiment rather than whole embodiments.Based on described embodiments of the invention, ordinary skill
All other embodiments that personnel are obtained on the premise of without creative work, broadly fall into the scope of protection of the invention.
Unless otherwise defined, technical term used herein or scientific terminology have in shoulding be art of the present invention
The ordinary meaning that the personage of general technical ability is understood.Present patent application description and claims use " the
One ", " second " and similar word be not offered as any order, quantity or importance, and be used only to distinguish different
Ingredient.Equally, the similar word such as " " or " " does not indicates that quantity limits yet, but represents and there is at least one.
A kind of USB Type-C interface female Intelligent Measurement and protection circuit, this circuit includes that female pin, CC control core
Sheet, protection detection module, described CC control chip is used for logic detection and control, the described protection detection module of USB Type-C
Enabling module including short-circuit detecting module, test voltage control module and CC control chip, described short-circuit detecting module is used for examining
Surveying the voltage of female pin or electric current, described short-circuit detecting module can be closed, described test voltage control module 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 the preferred technical scheme of one, test voltage control module of the present invention is for providing extremely to VBUS pin
Few a kind of voltage.
As the preferred technical scheme of one, described protection detection module of the present invention also includes alarm module, described
The short circuit information that alarm module detects according to short-circuit detecting module, is reported to the police to primary processor by Fault signal, and will warning
Information alert is to user, it is desirable to checks or keeps in repair.
The present invention also provides for a kind of USB device, and described USB device includes aforesaid circuit.
The present invention also provides for a kind of electronic equipment, and described electronic equipment includes aforesaid USB device.
A kind of USB Type-C interface female Intelligent Measurement and guard method, USB Type-C interface female includes that female is drawn
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 that short-circuit detecting module, test voltage control module and CC control chip enable module, described short circuit inspection
Surveying module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, and described test voltage controls
Module is for providing voltage to VBUS, and CC control chip enables module and is used for enabling CC control chip；
Close CC control chip, VBUS adds a voltage source Vtest；
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, then remain turned-off CC control chip, disconnection detection circuit；If not existing, then enable CC control chip, disconnect inspection
Slowdown monitoring circuit.
Described detection and guard method also include alarming step:
The short circuit information detected according to short-circuit detecting module, is reported to the police to primary processor by Fault signal, and by warning message
It is prompted to user, it is desirable to check or keep in repair.
As the preferred technical scheme of one, the present invention can add different several voltage source Vtest on VBUS, sentences
The disconnected voltage that whether there are two pins or electric current are always maintained at identical, if existing, then remaining turned-off CC control chip, disconnecting inspection
Slowdown monitoring circuit；If not existing, then enable CC control chip, disconnection detection circuit.
Specifically, the detection of the present invention and protection circuit perform following steps:
1. go up electrical testing one: during device power, within a time the shortest, VBUS adds a specific voltage source
Vtest, such as 1.2V.Meanwhile, CC, DP/DM, RX/TX and SBU pin Vsense is measured.In normal operating conditions, these
Will not be short-circuit between pin, therefore should measure different voltage.If measuring same voltage, then illustrate to there is short circuit existing
As.
2. go up electrical testing two: for the occasionality getting rid of in test, change the voltage in test voltage source, again survey
Examination.Process ibid electrical testing one step.
3. judge and report to the police: if after repeatedly testing, confirming to 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 check
Or maintenance, prevent from damaging generation.
The most normally work: through repeatedly testing, really there is no short circuit phenomenon, enable Type-C Controller, permissible
Setting up Type-C to connect, equipment normally works.
The circuit of the present invention and method can realize Intelligent Measurement and the protection of USB Type-C interface female, to greatest extent
The damage preventing short circuit from causing occurs, meanwhile, and the upper impact reduced 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 by DP/DM, SBU1/SBU2, in Fig. 1
CC_CON/DP_CON/DM_CON/SBU1_CON/SBU2_CON represents the pin in USB Type-C female, CC_INT/DP_
INT/DM_INT/SBU1_INT/SBU2_INT represents the internal or pin of opposite side female.The female pin of this interface includes
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 the inside of correspondence 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 for the logic detection of USB Type-C
With control, protection detection module Protection Detection includes short-circuit detecting module, test voltage control module and CC
Control chip enables module, and described short-circuit detecting module is for detecting voltage or the electric current of female pin, and short-circuit detecting module can
Being closed, test voltage control module is for providing voltage to VBUS, and CC control chip enables module and is used for enabling CC control core
Sheet.
During beginning, close CC control chip, VBUS adds the voltage Vtest that a voltage source is 1.2V；
Detect the voltage Vsense of at least one pin;
Judge whether that the voltage of two pins is identical；
If existing, then remain turned-off CC control chip, disconnection detection circuit；If not existing, then enable CC control chip, disconnect inspection
Slowdown monitoring circuit.
Embodiment 2
A kind of USB Type-C interface female Intelligent Measurement and protection circuit, with CC, as a example by DP/DM, SBU1/SBU2, in Fig. 1
CC_CON/DP_CON/DM_CON/SBU1_CON/SBU2_CON represents the pin in USB Type-C female, CC_INT/DP_
INT/DM_INT/SBU1_INT/SBU2_INT represents the internal or pin of opposite side female.The female pin of this interface includes
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 the inside of correspondence 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 for the logic detection of USB Type-C
With control, protection detection module Protection Detection includes short-circuit detecting module, test voltage control module and CC
Control chip enables module, and described short-circuit detecting module is for detecting voltage or the electric current of female pin, and short-circuit detecting module can
Being closed, test voltage control module is for providing voltage to VBUS, and CC control chip enables module and is used for enabling CC control core
Sheet.
During beginning, close CC control chip, on VBUS, add the voltage Vtest that a voltage source is 1.2V and 3V continuously；
Detect the voltage Vsense of at least one pin;
Judge whether that the voltage of two pins is always maintained at identical；
If existing, then remain turned-off CC control chip, disconnection detection circuit, reported to the police to primary processor by Fault signal, and will
Warning message is prompted to user, it is desirable to checks or keeps in repair；If not existing, then enable CC control chip, disconnection detection circuit.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.Every
The impartial change done according to present invention and modification, be encompassed by the scope of the claims of the present invention.
Claims (10)
1. USB Type-C interface female Intelligent Measurement and a protection circuit, described circuit includes that female pin, CC control core
Sheet, protection detection module, described CC control chip is used for logic detection and control, the described protection detection module of USB Type-C
Enabling module including short-circuit detecting module, test voltage control module and CC control chip, described short-circuit detecting module is used for examining
Surveying the voltage of female pin or electric current, described short-circuit detecting module can be closed, described test voltage control module for
VBUS provides voltage, and CC control chip enables module and is used for enabling CC control chip.
USB Type-C interface female Intelligent Measurement the most according to claim 1 and protection circuit, it is characterised in that described
Female pin includes that 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.
USB Type-C interface female Intelligent Measurement the most according to claim 1 and protection circuit, it is characterised in that described
Test voltage control module is for providing at least one voltage to VBUS pin.
USB Type-C interface female Intelligent Measurement the most according to claim 1 and protection circuit, 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 checks or keeps in repair.
5. a USB device, described USB device includes the circuit in claim 1-4 described in any one claim.
6. an electronic equipment, described electronic equipment includes the USB device described in claim 5.
7. USB Type-C interface female Intelligent Measurement and a guard method, USB Type-C interface female includes that female is drawn
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 that short-circuit detecting module, test voltage control module and CC control chip enable module, described short circuit inspection
Surveying module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, and described test voltage controls
Module is for providing voltage to VBUS, and CC control chip enables module and is used for enabling CC control chip；
Close CC control chip, VBUS adds a voltage source Vtest；
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, then remain turned-off CC control chip, disconnection detection circuit；If not existing, then enable CC control chip, disconnect inspection
Slowdown monitoring circuit.
USB Type-C interface female Intelligent Measurement the most according to claim 7 and guard method, it is characterised in that described
Detection and guard method also include alarming step:
The short circuit information detected according to short-circuit detecting module, is reported to the police to primary processor by Fault signal, and by warning message
It is prompted to user, it is desirable to check or keep in repair.
9. USB Type-C interface female Intelligent Measurement and a guard method, USB Type-C interface female includes that female is drawn
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 that short-circuit detecting module, test voltage control module and CC control chip enable module, described short circuit inspection
Surveying module and be used for detecting voltage or the electric current of female pin, described short-circuit detecting module can be closed, and described test voltage controls
Module is for providing voltage to VBUS, and CC control chip enables module and is used for enabling CC control chip；
Close CC control chip, and on VBUS, add several different voltage source Vtest；
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 always maintained at identical；
If existing, then remain turned-off CC control chip, disconnection detection circuit；If not existing, then enable CC control chip, disconnect inspection
Slowdown monitoring circuit.
USB Type-C interface female Intelligent Measurement the most according to claim 9 and guard method, it is characterised in that institute
State detection and guard method also include alarming step:
The short circuit information detected according to short-circuit detecting module, is reported to the police to primary processor by Fault signal, and by warning message
It is prompted to user, it is desirable to check or keep in repair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492815.5A CN106026006B (en) | 2016-06-30 | 2016-06-30 | A kind of USB Type-C interface female intelligent measurement and protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610492815.5A CN106026006B (en) | 2016-06-30 | 2016-06-30 | A kind of USB Type-C interface female intelligent measurement and protection circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN106026006A true CN106026006A (en) | 2016-10-12 |
| CN106026006B CN106026006B (en) | 2019-07-16 |
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| CN201610492815.5A Active CN106026006B (en) | 2016-06-30 | 2016-06-30 | A kind of USB Type-C interface female intelligent measurement and protection circuit |
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| US10218129B1 (en) | 2018-04-11 | 2019-02-26 | Cypress Semiconductor Corporation | Overvoltage protection for universal serial bus type-C (USB-C) connector systems |
| CN112041828A (en) * | 2018-04-11 | 2020-12-04 | 赛普拉斯半导体公司 | USB C-type sideband signal interface circuit |
| CN114041251A (en) * | 2019-06-27 | 2022-02-11 | 松下知识产权经营株式会社 | Charging device and socket control method |
| CN114039400A (en) * | 2022-01-11 | 2022-02-11 | 荣耀终端有限公司 | Electronic equipment |
| US11329438B2 (en) | 2018-08-20 | 2022-05-10 | Samsung Electronics Co., Ltd. | Device and method of ensuring power delivery in universal serial bus interface |
| CN116087825A (en) * | 2022-12-05 | 2023-05-09 | 江苏帝奥微电子股份有限公司 | Charging interface foreign matter short circuit detection chip, detection device and method |
| CN116226010A (en) * | 2023-03-17 | 2023-06-06 | 成绎半导体(苏州)有限公司 | USB PD interface circuit, data line and charging method |
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| CN116226010A (en) * | 2023-03-17 | 2023-06-06 | 成绎半导体(苏州)有限公司 | USB PD interface circuit, data line and charging method |
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| Publication number | Publication date |
|---|---|
| CN106026006B (en) | 2019-07-16 |
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