CN102331980A - USB device isolator - Google Patents
USB device isolator Download PDFInfo
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- CN102331980A CN102331980A CN2010102270295A CN201010227029A CN102331980A CN 102331980 A CN102331980 A CN 102331980A CN 2010102270295 A CN2010102270295 A CN 2010102270295A CN 201010227029 A CN201010227029 A CN 201010227029A CN 102331980 A CN102331980 A CN 102331980A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a USB (universal serial bus) device isolator. The isolator comprises an A type USB interface, a B type USB interface and an isolating unit; the isolating unit comprises a signal isolating unit and a power isolating unit, and an input interface of the signal isolating unit is electrically connected with a signal transmission port of the A type USB interface, and an output interface of the signal isolating unit is electrically connected with a signal transmission port of the B type USB interface, a power source signal of the A type USB interface is electrically connected with a power source signal of the B type USB interface through the power isolating unit. The power consumption of the USB device isolator provided by the invention is only 1/6-1/10 of that of the existing photon coupled isolator, the transmission speed is greatly improved; meanwhile, the withstand voltage capability of the USB isolating device is improved.
Description
Technical field
The present invention relates to the signal isolator technical field, especially a kind of USB device isolator.
Background technology
USB interface since its can hot plug, standard is unified, can connect plurality of advantages such as multiple devices, become computing machine and other equipment standard interface.Yet existing the utilization between the equipment that USB interface connects; Basically all be directly to link to each other with Type B USB interface (female mouthful) through A type USB interface (public mouthful); And do not carry out Signal Spacing, when producing potential difference (PD) owing to reasons such as external world's thunderbolt, forceful electric power interference, mains fluctuations between two or the multiple devices, burn out interface chip easily; Cause communication disruption, bring economic loss to the user.
On present some Medical Instruments, high voltage data acquisition equipment and the human interface device use USB interface is arranged also; But these equipment are had higher requirement to the withstand voltage of USB interface, and present USB interface generally can't bear these equipment to high pressure requirement.
The patent of CN200720305047.4 discloses the interface isolating converter of a kind of USB and standard serial communication interfaces such as RS-232, RS-485 or RS-422, and it adopts optical coupling isolator and TTL circuit to realize the isolation and the conversion of voltage between two kinds of different structure interfaces.Because the power consumption of its optical coupling isolator that adopts is higher, and exists the nonlinear transport property of unsettled current delivery rate and electric current, so transfer rate is lower, and the temperature range of its use is narrower, and serviceable life is also shorter.
Summary of the invention
The purpose of this invention is to provide that a kind of power consumption is little, transfer rate is high, high voltage bearing a kind of USB device isolator.
The technical scheme that the present invention adopts is such: a kind of USB device isolator; Comprise A type USB interface, Type B USB interface and isolated location; Said isolated location comprises Signal Spacing unit and isolated from power unit; The input interface of said Signal Spacing unit is electrically connected with the signal transmission mouth of A type USB interface; The output interface of Signal Spacing unit is electrically connected with the signal transmission mouth of Type B USB interface, and the power supply signal of said A type USB interface is electrically connected through said isolated from power unit with the power supply signal of said Type B USB interface.
The Signal Spacing unit of above-mentioned isolated location comprises the ADuM4160 isolator, and the isolated from power unit comprises the H0505s-1W isolator.No. 1 port of A type USB interface is electrically connected with power supply, and No. 2 ports and No. 3 ports are electrically connected No. 4 port ground connection through first resistance R 1 and second resistance R 2 with No. 6 ports and No. 7 ports of ADuM4160 isolator respectively; No. 1 port of Type B USB interface is electrically connected with No. 4 ports of H0505s-1W isolator, and No. 2 ports and No. 3 ports are electrically connected No. 4 port ground connection through the 3rd resistance R 3 and the 4th resistance R 4 with No. 11 ports and No. 10 ports of ADuM4160 isolator respectively; No. 1 port of H0505s-1W isolator is electrically connected No. 2 ports and No. 3 equal ground connection of port with No. 1 port of A type USB interface; No. 1 port of ADuM4160 isolator is electrically connected with No. 1 port of A type USB interface; No. 2 ports, No. 8 ports, No. 9 ports and the equal ground connection of 15 good ports; Pass through second capacitor C, 2 ground connection after No. 3 ports, No. 4 ports and No. 5 port parallel connections; Through the 4th capacitor C 4 ground connection, 16 ports are electrically connected with No. 4 ports of H0505s-1W isolator after No. 12 ports, No. 13 ports and No. 14 port parallel connections.
Concrete, also comprise No. 1 port of a termination ADuM4160 isolator of first capacitor C 1, the 3rd capacitor C 3, the 5th capacitor C 5 and the 6th capacitor C 6, the first capacitor C 1, other end ground connection; No. 16 ports of one termination ADuM4160 isolator of the 3rd capacitor C 3, other end ground connection; No. 1 port of one termination H0505s-1W isolator of the 5th capacitor C 5, other end ground connection; No. 4 ports of one termination H0505s-1W isolator of the 6th capacitor C 6, other end ground connection.First capacitor C 1 and the 3rd capacitor C 3 are 0.1 μ F electric capacity, and the 5th capacitor C 5 and the 6th capacitor C 6 are 0.47 μ F electric capacity.
Concrete, first resistance R 1, second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4 are 24 Ω resistance.
Concrete, second capacitor C 2 and the 4th capacitor C 4 are 0.1 μ F electric capacity.
In sum, owing to adopted technique scheme, the invention has the beneficial effects as follows:
1, Signal Spacing adopts the ADuM4160 isolator of magnetic coupling, makes the power consumption of USB device isolator be merely the 1/6-1/10 of optical coupling isolator, and transfer rate improves greatly.
2, isolated from power adopts the H0505s-1W isolator, voltage endurance capability that can high USB xegregating unit.
3, integrated degree is high, and other cost of products of the same type are lower relatively, size is littler.
Description of drawings
The present invention will explain through example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the theory diagram of USB device isolator of the present invention.
Fig. 2 is the packaging pin figure of ADuM4160 isolator.
Fig. 3 is the circuit theory diagrams of USB device isolator of the present invention.
Embodiment
Disclosed all characteristics in this instructions, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this instructions (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
As shown in Figure 1; A kind of USB device isolator; Comprise A type USB interface (public mouthful), Type B USB interface (female mouthful) and isolated location; Said isolated location comprises Signal Spacing unit and isolated from power unit; The input interface of said Signal Spacing unit is electrically connected with the signal transmission mouth of A type USB interface, and the output interface of Signal Spacing unit is electrically connected with the signal transmission mouth of Type B USB interface, and the power supply signal of said A type USB interface is electrically connected through said isolated from power unit with the power supply signal of said Type B USB interface.
In the present invention, the Signal Spacing unit of said isolated location adopts the ADuM4160 isolator, also can adopt other magnetic coupling isolators, and the encapsulation figure of ADuM4160 isolator is as shown in Figure 2.The isolated from power unit comprises the H0505s-1W isolator.
As shown in Figure 3; Be the circuit theory diagrams of USB device isolator of the present invention; No. 1 port of A type USB interface is electrically connected with power supply, and No. 2 ports and No. 3 ports are electrically connected No. 4 port ground connection through first resistance R 1 and second resistance R 2 with No. 6 ports and No. 7 ports of ADuM4160 isolator respectively; No. 1 port of Type B USB interface is electrically connected with No. 4 ports of H0505s-1W isolator, and No. 2 ports and No. 3 ports are electrically connected No. 4 port ground connection through the 3rd resistance R 3 and the 4th resistance R 4 with No. 11 ports and No. 10 ports of ADuM4160 isolator respectively; No. 1 port of H0505s-1W isolator is electrically connected No. 2 ports and No. 3 equal ground connection of port with No. 1 port of A type USB interface; No. 1 port of ADuM4160 isolator is electrically connected with No. 1 port of A type USB interface; No. 2 ports, No. 8 ports, No. 9 ports and the equal ground connection of 15 good ports; Pass through second capacitor C, 2 ground connection after No. 3 ports, No. 4 ports and No. 5 port parallel connections; Through the 4th capacitor C 4 ground connection, 16 ports are electrically connected with No. 4 ports of H0505s-1W isolator after No. 12 ports, No. 13 ports and No. 14 port parallel connections.No. 1 port that also comprises a termination ADuM4160 isolator of first capacitor C 1, the 3rd capacitor C 3, the 5th capacitor C 5 and the 6th capacitor C 6, the first capacitor C 1, other end ground connection; No. 16 ports of one termination ADuM4160 isolator of the 3rd capacitor C 3, other end ground connection; No. 1 port of one termination H0505s-1W isolator of the 5th capacitor C 5, other end ground connection; No. 4 ports of one termination H0505s-1W isolator of the 6th capacitor C 6, other end ground connection.First capacitor C 1 and the 3rd capacitor C 3 are 0.1 μ F electric capacity, and the 5th capacitor C 5 and the 6th capacitor C 6 are 0.47 μ F electric capacity.
Concrete, first resistance R 1, second resistance R 2, the 3rd resistance R 3 and the 4th resistance R 4 are 24 Ω resistance.
Concrete, second capacitor C 2 and the 4th capacitor C 4 are 0.1 μ F electric capacity.
USB device isolator of the present invention is connected with computing machine with USB device.A type USB interface is connected with computing machine; The power supply signal of computing machine passes through No. 1 port transmission of A type USB interface to the H0505s-1W isolator; Power supply signal after via the H0505s-1W isolator power supply signal being isolated; Again via No. 1 port transmission of Type B USB interface to USB device, supply power to USB device.
Simultaneously, to the ADuM4160 isolator, data-signal is isolated 2, No. 3 port transmission of back through the Type B USB interface to USB device through isolator to the data-signal of computing machine of the present invention via 2, No. 3 port transmission of A type USB interface; The data-signal of USB device also can transfer to computing machine through reverse path, and the data interaction transmission channel forms, and USB device and computing machine get into normal communication state.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (7)
1. USB device isolator; Comprise A type USB interface, Type B USB interface and isolated location; It is characterized in that said isolated location comprises Signal Spacing unit and isolated from power unit, the input interface of said Signal Spacing unit is electrically connected with the signal transmission mouth of A type USB interface; The output interface of Signal Spacing unit is electrically connected with the signal transmission mouth of Type B USB interface, and the power supply signal of said A type USB interface is electrically connected through said isolated from power unit with the power supply signal of said Type B USB interface.
2. a kind of USB device isolator according to claim 1 is characterized in that the Signal Spacing unit of said isolated location comprises the ADuM4160 isolator, and the isolated from power unit comprises the H0505s-1W isolator.
3. a kind of USB device isolator according to claim 2; It is characterized in that; No. 1 port of A type USB interface is electrically connected with power supply; No. 2 ports and No. 3 ports are electrically connected No. 4 port ground connection through first resistance (R1) and second resistance (R2) with No. 6 ports and No. 7 ports of ADuM4160 isolator respectively; No. 1 port of Type B USB interface is electrically connected with No. 4 ports of H0505s-1W isolator, and No. 2 ports and No. 3 ports are electrically connected No. 4 port ground connection through the 3rd resistance (R3) and the 4th resistance (R4) with No. 11 ports and No. 10 ports of ADuM4160 isolator respectively; No. 1 port of H0505s-1W isolator is electrically connected No. 2 ports and No. 3 equal ground connection of port with No. 1 port of A type USB interface; No. 1 port of ADuM4160 isolator is electrically connected with No. 1 port of A type USB interface; No. 2 ports, No. 8 ports, No. 9 ports and the equal ground connection of 15 good ports; Pass through second electric capacity (C2) ground connection after No. 3 ports, No. 4 ports and No. 5 port parallel connections; Through the 4th electric capacity (C4) ground connection, 16 ports are electrically connected with No. 4 ports of H0505s-1W isolator after No. 12 ports, No. 13 ports and No. 14 port parallel connections.
4. a kind of USB device isolator according to claim 3; It is characterized in that; Also comprise first electric capacity (C1), the 3rd electric capacity (C3), the 5th electric capacity (C5) and the 6th electric capacity (C6), No. 1 port of a termination ADuM4160 isolator of first electric capacity (C1), other end ground connection; No. 16 ports of one termination ADuM4160 isolator of the 3rd electric capacity (C3), other end ground connection; No. 1 port of one termination H0505s-1W isolator of the 5th electric capacity (C5), other end ground connection; No. 4 ports of one termination H0505s-1W isolator of the 6th electric capacity (C6), other end ground connection.
5. a kind of USB device isolator according to claim 4 is characterized in that, first electric capacity (C1) and the 3rd electric capacity (C3) are 0.1 μ F electric capacity, and the 5th electric capacity (C5) and the 6th electric capacity (C6) are 0.47 μ F electric capacity.
6. a kind of USB device isolator according to claim 3 is characterized in that, first resistance (R1), second resistance (R2), the 3rd resistance (R3) and the 4th resistance (R4) are 24 Ω resistance.
7. a kind of USB device isolator according to claim 3 is characterized in that, second electric capacity (C2) and the 4th electric capacity (C4) are 0.1 μ F electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102270295A CN102331980A (en) | 2010-07-14 | 2010-07-14 | USB device isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102270295A CN102331980A (en) | 2010-07-14 | 2010-07-14 | USB device isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102331980A true CN102331980A (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102270295A Pending CN102331980A (en) | 2010-07-14 | 2010-07-14 | USB device isolator |
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| CN (1) | CN102331980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559163A (en) * | 2013-11-11 | 2014-02-05 | 上海航天测控通信研究所 | Signal isolating and conditioning device and method capable of configuring multiple functional modules |
| WO2018194439A1 (en) * | 2017-04-20 | 2018-10-25 | Gonzalez Briceno Gaspar | Isolated usb interface for connecting medical instruments to a computer and usb speed sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7075329B2 (en) * | 2003-04-30 | 2006-07-11 | Analog Devices, Inc. | Signal isolators using micro-transformers |
-
2010
- 2010-07-14 CN CN2010102270295A patent/CN102331980A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7075329B2 (en) * | 2003-04-30 | 2006-07-11 | Analog Devices, Inc. | Signal isolators using micro-transformers |
Non-Patent Citations (2)
| Title |
|---|
| MARK CANTRELL: "《Digital Isolator Simplifies USB Isolation in Medical and Industrial Applications》", 30 June 2009, HTTP://WWW.ANALOG.COM * |
| 广州金升阳科技有限公司: "《电源应用方案》", 31 December 2007, HTTP://WWW.MORNSUN.CN * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103559163A (en) * | 2013-11-11 | 2014-02-05 | 上海航天测控通信研究所 | Signal isolating and conditioning device and method capable of configuring multiple functional modules |
| CN103559163B (en) * | 2013-11-11 | 2016-03-09 | 上海航天测控通信研究所 | A kind of signal isolation conditioning device of configurable several functions module and method |
| WO2018194439A1 (en) * | 2017-04-20 | 2018-10-25 | Gonzalez Briceno Gaspar | Isolated usb interface for connecting medical instruments to a computer and usb speed sensor |
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Application publication date: 20120125 |