CN106026006B - A kind of USB Type-C interface female intelligent measurement and protection circuit - Google Patents
A kind of USB Type-C interface female intelligent measurement and protection circuit Download PDFInfo
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- CN106026006B CN106026006B CN201610492815.5A CN201610492815A CN106026006B CN 106026006 B CN106026006 B CN 106026006B CN 201610492815 A CN201610492815 A CN 201610492815A CN 106026006 B CN106026006 B CN 106026006B
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- 230000004224 protection Effects 0.000 title claims abstract description 37
- 238000005259 measurement Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 14
- 238000007689 inspection Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The present invention relates to a kind of USB Type-C interface female intelligent measurements and protection circuit, the circuit includes female pin, CC controls chip, protect detection module, the CC control chip is used for the logic detection and control of USB Type-C, the protection detection module includes short-circuit detecting module, test voltage control module and CC control chip enable module, the short-circuit detecting module is used to detect the voltage or electric current of female pin, the short-circuit detecting module can be closed, the test voltage control module is used to provide voltage to VBUS, CC control chip enables module for enabling CC control chip.The intelligent measurement and protection of USB Type-C interface female may be implemented in circuit of the invention, prevents from damaging generation caused by short circuit to greatest extent, meanwhile, the upper influence reduced to port communication to greatest extent.
Description
Technical field
The present invention relates to a kind of USB Type-C interface female intelligent measurements and protection circuit.
Background technique
Type-C is a kind of connecting interface of USB interface, regardless of tow sides can be inserted into, size be about 8.3mm ×
2.5mm supports the functions such as the charging of USB standard, data transmission, display output as other interfaces.Type-C is by USB
Implementers Forum is formulated, and starts to popularize after the manufacturers such as acquisition apple, Google, Intel, Microsoft in 2014 support.
On August 1st, 2015, special section's core are proposed the mobile solid state hard disk of first global Type-C interface.On October 10th, 2015, iron prestige
Horse releases first global 3.1 Type-C interface disk array of USB.
SB Type-C interface has the characteristics that miniaturization, stitch dense arrangement, while stitch voltage range changes greatly,
CC foot therein, TX/RX, DP/DM foot and SBU foot support 5V operating voltage, and VBUS foot highest can support 20V.Cause
This, when there is contamination, it is easy to short-circuit conditions occur, cause the high voltage on VBUS to appear on other 5V pins, cause
Interface and equipment damage.
A high voltage transistor can be added in pin in existing passive protection scheme, and additional voltage is higher than some threshold value
When, this high voltage transistor is closed, so that high pressure be isolated.
Existing passive protection scheme can bring very big parasitic capacitance on pin, so that TX/TX is influenced, DP/DM etc.
The maximum communication speed of communications pins.Usual TX/RX needs support the signal rate of 5Gbps, and DP/DM needs support 480Mbps
Signal rate.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of USB Type-C interface female intelligent measurement and protections
Circuit, the circuit include female pin, CC control chip, protection detection module, and the CC control chip is used for USB Type-C
Logic detection and control, the protection detection module include short-circuit detecting module, test voltage control module and CC control core
Piece enables module, and the short-circuit detecting module is used to detect the voltage or electric current of female pin, and the short-circuit detecting module can quilt
It closes, the test voltage control module is used to provide voltage to VBUS, and CC control chip enables module for enabling CC control
Chip.
The 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.
The test voltage control module is used to provide at least one voltage to VBUS pin.
The protection detection module further includes alarm module, and the alarm module detects short according to short-circuit detecting module
Road information is alarmed to primary processor by Fault signal, and warning message is prompted to user, it is desirable that is checked or is repaired.
A kind of USB device, the USB device include circuit above-mentioned.
A kind of electronic equipment, the electronic equipment include USB device above-mentioned.
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, the CC control chip is used for the logic detection and 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, the short circuit inspection
Voltage or electric current that module is used to detect female pin are surveyed, the short-circuit detecting module can be closed, the test voltage control
Module is used to provide voltage to VBUS, and CC control chip enables module for enabling CC control chip；
It closes CC and controls chip, a voltage source Vtest is added on VBUS；
Detect the voltage Vsense or electric current Isense of at least one pin;
Voltage or the electric current for judging whether there is two pins are identical；
If it exists, then CC control chip, disconnection detection circuit are remained turned-off；If it does not exist, then it enables CC and controls chip, break
Open detection circuit.
The method using detection voltage Vtest test pin short circuit, also could alternatively be using current source Itest or
Other method for detecting short circuit.
The detection and guard method further include alarming step:
According to the short circuit information that short-circuit detecting module detects, alarmed by Fault signal to primary processor, and will warning
Information alert is to user, it is desirable that is checked or is repaired.
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, the CC control chip is used for the logic detection and 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, the short circuit inspection
Voltage or electric current that module is used to detect female pin are surveyed, the short-circuit detecting module can be closed, the test voltage control
Module is used to provide voltage to VBUS, and CC control chip enables module for enabling CC control chip；
It closes CC and controls chip, and several different voltage source Vtest are added on VBUS；
Detect the voltage Vsense or electric current Isense of at least one pin;
The voltage or electric current for judging whether there is two pins are always maintained at identical；
If it exists, then CC control chip, disconnection detection circuit are remained turned-off；If it does not exist, then it enables CC and controls chip, break
Open detection circuit.
The detection and guard method further include alarming step:
According to the short circuit information that short-circuit detecting module detects, alarmed by Fault signal to primary processor, and will warning
Information alert is to user, it is desirable that is checked or is repaired.
The intelligent measurement and protection of USB Type-C interface female may be implemented in circuit and method of the invention, to greatest extent
It prevents from damaging caused by short circuit and occur, meanwhile, the upper influence reduced to port communication to greatest extent.
The above-mentioned of the application and other features, aspects and advantages are more readily understood with reference to following detailed description.
Detailed description of the invention
Fig. 1 is the schematic diagram of detection and protection circuit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's all other embodiment obtained under the premise of being not necessarily to creative work, shall fall within the protection scope of the present invention.
Unless otherwise defined, the technical term or scientific term used herein should be in fields of the present invention and has
The ordinary meaning that the personage of general technical ability is understood.Used in present patent application specification and claims " the
One ", " second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish different
Component part.Equally, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates that there are at least one.
A kind of USB Type-C interface female intelligent measurement and protection circuit, the circuit include female pin, CC control core
Piece, protection detection module, the CC control chip are used for the logic detection and control of USB Type-C, the protection detection module
Module is enabled including short-circuit detecting module, test voltage control module and CC control chip, the short-circuit detecting module is for examining
Survey the voltage or electric current of female pin, the short-circuit detecting module can be closed, the test voltage control module be used for
VBUS provides voltage, and CC control chip enables module for enabling CC control chip.The 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 perferred technical scheme, test voltage control module of the present invention to VBUS pin for being provided to
A kind of few voltage.
As a kind of perferred technical scheme, the protection detection module of the present invention further includes alarm module, described
The short circuit information that alarm module is detected according to short-circuit detecting module is alarmed by Fault signal to primary processor, and will warning
Information alert is to user, it is desirable that is checked or is repaired.
The present invention also provides a kind of USB device, the USB device includes circuit above-mentioned.
The present invention also provides a kind of electronic equipment, the electronic equipment includes USB device above-mentioned.
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, the CC control chip is used for the logic detection and 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, the short circuit inspection
Voltage or electric current that module is used to detect female pin are surveyed, the short-circuit detecting module can be closed, the test voltage control
Module is used to provide voltage to VBUS, and CC control chip enables module for enabling CC control chip；
It closes CC and controls chip, a voltage source Vtest is added on VBUS；
Detect the voltage Vsense or electric current Isense of at least one pin;
Voltage or the electric current for judging whether there is two pins are identical；
If it exists, then CC control chip, disconnection detection circuit are remained turned-off；If it does not exist, then it enables CC and controls chip, break
Open detection circuit.
The detection and guard method further include alarming step:
According to the short circuit information that short-circuit detecting module detects, alarmed by Fault signal to primary processor, and will warning
Information alert is to user, it is desirable that is checked or is repaired.
As a kind of perferred technical scheme, different several voltage source Vtest can be added in the present invention on VBUS, sentence
The disconnected voltage that whether there is two pins or electric current are always maintained at identical, and if it exists, then remain turned-off CC control chip, disconnect inspection
Slowdown monitoring circuit；If it does not exist, then it enables CC and controls chip, disconnection detection circuit.
Specifically, detection of the invention and protection circuit execute following steps:
1. power up test one: when device power, within a very short time, a specific voltage being added on VBUS
Source Vtest, such as 1.2V.Meanwhile measuring CC, DP/DM, RX/TX and SBU pin Vsense.In normal operating conditions, this
Will not be short-circuit between a little pins, therefore different voltage should be measured.If measuring same voltage, illustrate in the presence of short circuit
Phenomenon.
2. power up test two: in order to exclude the contingency in test, changing the voltage in test voltage source, surveyed again
Examination.Process is the same as one step of power up test.
3. judgement and alarm: if there are short circuit phenomenons for confirmation repeatedly after test, Enable Type-C can be suspended
Controller, and alarmed by Fault signal to primary processor, and warning message is prompted to user, it is desirable that it is checked
Or maintenance, prevent damage.
4. working normally: by repeatedly test, really there is no short circuit phenomenon, Type-C Controller is enabled, it can be with
Type-C connection is established, equipment works normally.
The intelligent measurement and protection of USB Type-C interface female may be implemented in circuit and method of the invention, to greatest extent
It prevents from damaging caused by short circuit and occur, meanwhile, the upper influence reduced to port communication to greatest extent.
Embodiment 1
A kind of USB Type-C interface female intelligent measurement and protection circuit, with CC, for DP/DM, SBU1/SBU2, Fig. 1
In CC_CON/DP_CON/DM_CON/SBU1_CON/SBU2_CON represent the pin in USB Type-C female, CC_INT/
DP_INT/DM_INT/SBU1_INT/SBU2_INT represents internal or other side female pin.The female pin of the interface
Including VBUS pin, CC pin CC_CON, DP pin DP_CON, DM pin DM_CON, SBU1 pin SBU1_CON, SBU2 pin
SBU2_CON, it is respectively CC_INT, DP_INT, DM_ that each female pin, which has the pin of corresponding inside or other side female,
INT, SBU1_INT, SBU2_INT, the circuit include female pin, CC control chip Type-C Controller, protection detection
Module Protection Detection, CC control the logic detection that chip Type-C Controller is used for USB Type-C
With control, protecting detection module Protection Detection includes short-circuit detecting module, test voltage control module and CC
It controls chip and enables module, the short-circuit detecting module is used to detect the voltage or electric current of female pin, and short-circuit detecting module can
It is closed, test voltage control module is used to provide voltage to VBUS, and CC control chip enables module for enabling CC control core
Piece.
It when beginning, closes CC and controls chip, the voltage Vtest that a voltage source is 1.2V is added on VBUS；
Detect the voltage Vsense of at least one pin;
The voltage for judging whether there is two pins is identical；
If it exists, then CC control chip, disconnection detection circuit are remained turned-off；If it does not exist, then it enables CC and controls chip, break
Open detection circuit.
Embodiment 2
A kind of USB Type-C interface female intelligent measurement and protection circuit, with CC, for DP/DM, SBU1/SBU2, Fig. 1
In CC_CON/DP_CON/DM_CON/SBU1_CON/SBU2_CON represent the pin in USB Type-C female, CC_INT/
DP_INT/DM_INT/SBU1_INT/SBU2_INT represents internal or other side female pin.The female pin of the interface
Including VBUS pin, CC pin CC_CON, DP pin DP_CON, DM pin DM_CON, SBU1 pin SBU1_CON, SBU2 pin
SBU2_CON, it is respectively CC_INT, DP_INT, DM_ that each female pin, which has the pin of corresponding inside or other side female,
INT, SBU1_INT, SBU2_INT, the circuit include female pin, CC control chip Type-C Controller, protection detection
Module Protection Detection, CC control the logic detection that chip Type-C Controller is used for USB Type-C
With control, protecting detection module Protection Detection includes short-circuit detecting module, test voltage control module and CC
It controls chip and enables module, the short-circuit detecting module is used to detect the voltage or electric current of female pin, and short-circuit detecting module can
It is closed, test voltage control module is used to provide voltage to VBUS, and CC control chip enables module for enabling CC control core
Piece.
It when beginning, closes CC and controls 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 there is two pins voltage be always maintained at it is identical；
If it exists, then CC control chip is remained turned-off, disconnection detection circuit is alarmed by Fault signal to primary processor,
And warning message is prompted to user, it is desirable that checked or repaired；If it does not exist, then it enables CC and controls chip, disconnection detection
Circuit.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
The equivalent changes and modifications that content is done according to the present invention are encompassed by the scope of the patents of the invention.
Claims (1)
1. a kind of USB Type-C interface female intelligent measurement and guard method, which is characterized in that the USB Type-C interface
Female includes female pin, CC control chip, protection detection module, and logic of the CC control chip for USB Type-C is examined
It surveys and control, the protection detection module includes that short-circuit detecting module, test voltage control module and CC control chip enable mould
Block, the short-circuit detecting module are used to detect the voltage or electric current of female pin, and the short-circuit detecting module can be closed, described
Test voltage control module is used to provide voltage to VBUS, and CC control chip enables module for enabling CC control chip；
It closes CC and controls chip, and several different voltage source Vtest are added on VBUS；
Detect the voltage Vsense or electric current Isense of at least two pins;
The voltage or electric current for judging whether there is two pins are always maintained at identical；
If it exists, then CC control chip, disconnection detection circuit are remained turned-off；If it does not exist, then it enables CC and controls chip, disconnect inspection
Slowdown monitoring circuit,
The detection and guard method further include alarming step:
It according to the short circuit information that short-circuit detecting module detects, is alarmed by Fault signal to primary processor, and by warning message
It is prompted to user, it is desirable that checked or repaired.
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| 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 |
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| CN106026006A CN106026006A (en) | 2016-10-12 |
| CN106026006B true CN106026006B (en) | 2019-07-16 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10353853B1 (en) * | 2018-04-11 | 2019-07-16 | Cypress Semiconductor Corporation | USB type-C sideband signal interface circuit |
| US10218129B1 (en) | 2018-04-11 | 2019-02-26 | Cypress Semiconductor Corporation | Overvoltage protection for universal serial bus type-C (USB-C) connector systems |
| KR102675130B1 (en) | 2018-08-20 | 2024-06-13 | 삼성전자주식회사 | Device and method for ensuring power delivery in universal serial bus interface |
| JP7178640B2 (en) * | 2019-06-27 | 2022-11-28 | パナソニックＩｐマネジメント株式会社 | Charging device and receptacle control method |
| CN114039400B (en) * | 2022-01-11 | 2022-06-07 | 荣耀终端有限公司 | Electronic equipment |
| CN116087825B (en) * | 2022-12-05 | 2023-09-29 | 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 | A USB PD interface circuit, data line, and charging method |
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Effective date of registration: 20200803 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. |