CN206003085U - A kind of new USB isolation circuit - Google Patents
A kind of new USB isolation circuit Download PDFInfo
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- CN206003085U CN206003085U CN201620633464.0U CN201620633464U CN206003085U CN 206003085 U CN206003085 U CN 206003085U CN 201620633464 U CN201620633464 U CN 201620633464U CN 206003085 U CN206003085 U CN 206003085U
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Abstract
The utility model discloses a kind of new USB isolation circuit，Belong to USB data transmission technical field，Including USB input、Power source protective module、First Voltage stabilizing module、Line concentration controller、First digital isolation module、Second digital isolation module、3rd digital isolation module、4th digital isolation module、First USB lead-out terminal、2nd USB lead-out terminal、3rd USB lead-out terminal、4th USB lead-out terminal、First overcurrent protection module、Second overcurrent protection module、3rd overcurrent protection module、4th overcurrent protection module、24V power input terminal、Second Voltage stabilizing module、First ground wire and the second ground wire，Achieve four road USB set line control signals and exchange the isolation with USB data transmission，It is difficult to ensure that when solving USB data transmission that the high speed of data is exchanged、It is difficult to the problem of multiple-channel output and high cost.
Description
Technical field
The utility model belongs to USB data transmission technical field.
Background technology
Now with the increasingly renewal of PC technology, USB data transmission technology is also widely applied to the life of people therewith
In, and usb data is difficult in transmitting procedure isolate at present, because it is difference, bidirectional interface, and needs configuration (to pass through
Pull up and drop-down) resistance instruction bus speed.This characteristic only two-way just has very big challenge, because having to use certain
Method come determine data transmission direction.In isolated form USB interface, this information must be able to pass over isolation barrier.Control
Stream is determined by data structure, rather than control signal.
Utility model content
The purpose of this utility model is to provide a kind of new USB isolation circuit, it is achieved that four road USB set line control signals are handed over
The isolation with USB data transmission is changed, when solving USB data transmission, is difficult to ensure that the high speed of data is exchanged, is difficult to multichannel
Output and the problem of high cost.
For achieving the above object, the utility model is employed the following technical solutions：
A kind of new USB isolation circuit, including USB input, power source protective module, the first Voltage stabilizing module, collection line traffic control
Device processed, the first digital isolation module, the second digital isolation module, the 3rd digital isolation module, the 4th digital isolation module, first
USB lead-out terminal, the 2nd USB lead-out terminal, the 3rd USB lead-out terminal, the 4th USB lead-out terminal, the first overcurrent protection module,
Second overcurrent protection module, the 3rd overcurrent protection module, the 4th overcurrent protection module, 24V power input terminal, the second voltage stabilizing mould
Block, the first ground wire and the second ground wire, line concentration controller are provided with first group of I/O port, second group of I/O port, the 3rd group of I/O port, the 4th group of IO
Mouth and the 5th group of I/O port, USB input connection first group of I/O port, the first numeral isolation module connection second group of IO
Mouthful, the second numeral isolation module connection the 3rd group of I/O port, the 3rd numeral isolation module connection the 4th group of I/O port, the 4th
Digital isolation module connects the 5th group of I/O port, and USB input is also connected with power source protective module, and power source protective module also connects
The first Voltage stabilizing module is connect, the first Voltage stabilizing module is powered for line concentration controller, the first digital isolation module and the first overcurrent protection mould
Block is all connected with a USB lead-out terminal, and the second digital isolation module and the second overcurrent protection module are all connected with the 2nd USB output end
Son, the 3rd digital isolation module and the 3rd overcurrent protection module are all connected with the 3rd USB lead-out terminal, the 4th digital isolation module and
4th overcurrent protection module is all connected with the 4th USB lead-out terminal, the first overcurrent protection module, the second overcurrent protection module, the 3rd
Overcurrent protection module and the 4th overcurrent protection module are all connected with the second Voltage stabilizing module, and it is defeated that the second Voltage stabilizing module is also connected with 24V power supply
Enter terminal, USB input, power source protective module, the first Voltage stabilizing module and line concentration controller are all connected with the first ground wire, first
USB lead-out terminal, the 2nd USB lead-out terminal, the 3rd USB lead-out terminal, the 4th USB lead-out terminal, the first overcurrent protection module,
Second overcurrent protection module, the 3rd overcurrent protection module, the 4th overcurrent protection module, 24V power input terminal and the second voltage stabilizing
Module is all connected with the second ground wire, the first digital isolation module, the second digital isolation module, the 3rd digital isolation module and the 4th number
Word isolation module is all connected with the first ground wire and the second ground wire.
Line concentration controller model GL850A, the line concentration controller are additionally provided with analog power input, numeral electricity
Source input, simulation ground wire input and digital ground wire input, the USB input attached bag include binding post X1, terminals
2 pin of sub- X1 and 3 pin connect first group of I/O port of the line concentration controller, and 4 pin of binding post X1 connect the first ground wire, described
Power source protective module includes overcurrent protection chip U9, resistance R4, resistance R38 and light emitting diode DS1, first Voltage stabilizing module
Including voltage-stablizer U6, electric capacity C30, inductance L2 and inductance L3,1 pin of binding post X1 connects overcurrent protection chip by inductance L1
5 pin of U9 and 4 pin, 1 pin of overcurrent protection chip U9 pass through the positive pole of resistance R38 connecting luminous diode DS1, light emitting diode
2 pin of the negative pole connection overcurrent protection chip U9 of DS1, are connected with resistance R4, mistake between 2 pin of overcurrent protection chip U9 and 3 pin
2 pin of stream protection chip U9 are also connected with the first ground wire, and 1 pin of overcurrent protection chip U9 is also connected with 3 pin of voltage-stablizer U6, voltage-stablizer
1 pin of U6 connects the first ground wire, and the 2 pin out-put supply VDD_3.3V of voltage-stablizer U6, the power vd D_3.3V connect the collection
The analog power input of lane controller, 1 pin of voltage-stablizer U6 connect the simulation ground wire input of the line concentration controller, voltage stabilizing
2 pin of electric capacity C30, voltage-stablizer U6 are connected between 2 pin of device U6 and 1 pin by inductance L2 out-put supply VDD_3.3VD, voltage stabilizing
1 pin of device U6 exports the digital power that ground wire VSS_DGND, power vd D_3.3VD connect the line concentration controller by inductance L3
Input, ground wire VSS_DGND connect the digital ground wire input of the line concentration controller, the model of the voltage-stablizer U6
LM1117.
The 24V power input terminal includes binding post X2, diode D1 and diode D2, and the second Voltage stabilizing module includes
Voltage-stablizer U7, electric capacity C31, electric capacity C32, resistance R39 and light emitting diode DS2, the 1 pin connection diode D1's of binding post X2
Positive pole, 2 pin of the negative pole connection voltage-stablizer U7 of diode D1,1 pin of the 2 pin connection voltage-stablizer U7 of binding post X2, terminals
The positive pole of the 3 pin connection diode D2 of sub- X2,3 pin of the negative pole connection voltage-stablizer U7 of diode D2,4 pin of binding post X2 connect
Second ground wire is connect, between 3 pin of voltage-stablizer U7 and 5 pin, is connected with the electric capacity C31 and electric capacity C32 being connected in parallel, voltage-stablizer
3 pin of U7 connect second ground also by the positive pole of resistance R39 connecting luminous diode DS2, the negative pole of light emitting diode DS2
Line, 5 pin of voltage-stablizer U7 are also connected with second ground wire, model RA2405YMD-6W of the voltage-stablizer U7.
First overcurrent protection module includes overcurrent protection chip U8 and resistance R3,5 pin and 4 of overcurrent protection chip U8
Pin is all connected with 3 pin of the voltage-stablizer U7,1 pin out-put supply VDD_BUS1, the overcurrent protection chip U8 of overcurrent protection chip U8
2 pin connect second ground wire, be connected with resistance R3 between 3 pin of overcurrent protection chip U8 and 2 pin；Second excessively stream is protected
Shield module includes that overcurrent protection chip U10 and resistance R7,5 pin of overcurrent protection chip U10 and 4 pin are all connected with the voltage-stablizer U7
3 pin, 2 pin of 1 pin out-put supply VDD_BUS2, the overcurrent protection chip U10 of overcurrent protection chip U10 connect second ground
Line, is connected with resistance R7 between 3 pin of overcurrent protection chip U10 and 2 pin；3rd overcurrent protection module includes overcurrent protection
Chip U11 and resistance R10,5 pin of overcurrent protection chip U11 and 4 pin are all connected with 3 pin of the voltage-stablizer U7, overcurrent protection core
2 pin of 1 pin out-put supply VDD_BUS3, the overcurrent protection chip U11 of piece U11 connect second ground wire, overcurrent protection chip
Resistance R10 is connected between 3 pin of U11 and 2 pin；4th overcurrent protection module includes overcurrent protection chip U12 and resistance
R13,5 pin of overcurrent protection chip U12 and 4 pin are all connected with 3 pin of the voltage-stablizer U7, the 1 pin output of overcurrent protection chip U12
2 pin of power vd D_BUS4, overcurrent protection chip U12 connect second ground wire, 3 pin of overcurrent protection chip U12 and 2 pin it
Between be connected with resistance R13.
The first USB lead-out terminal includes binding post X3A, resistance R1 and resistance R2, the described first digital isolation mode
Block includes USB isolating chip U2, electric capacity C1, electric capacity C3, electric capacity C2, electric capacity C4, resistance R14, resistance R15, resistance R16 and resistance
1 pin of R17, USB isolating chip U2 connects 1 pin of the overcurrent protection chip U9, and 1 pin of USB isolating chip U2 is also by electricity
Hold C1 and connect first ground wire, 2 pin of USB isolating chip U2 connect first ground wire, 3 pin of USB isolating chip U2,4
Pin and 5 pin all connect first ground wire by electric capacity C3,6 pin of USB isolating chip U2 and 7 pin respectively by resistance R14 and
R15 connects second group of I/O port of the line concentration controller, 6 pin of USB isolating chip U2 and 7 pin also respectively by resistance R16 and
8 pin of resistance R17 connection USB isolating chip U2,8 pin of USB isolating chip U2 are also connected with first ground wire, USB isolated core
9 pin of piece U2 connect second ground wire, and 11 pin of USB isolating chip U2 and 10 pin are connected by resistance R1 and resistance R2 respectively
2 pin of binding post X3A and 3 pin, 12 pin of USB isolating chip U2,13 pin and 14 pin all connect described second by electric capacity C4
Ground wire, 15 pin of USB isolating chip U2 connect second ground wire, and 16 pin of USB isolating chip U2 connect institute by electric capacity C2
The second ground wire is stated, 16 pin of USB isolating chip U2 are also connected with 1 pin of binding post X3A, and the 4 pin connection of binding post X3A is described
Second ground wire；The 2nd USB lead-out terminal includes binding post X3B, resistance R5 and resistance R6, the described second digital isolation mode
Block includes USB isolating chip U3, electric capacity C5, electric capacity C7, electric capacity C6, electric capacity C8, resistance R21, resistance R22, resistance R23 and resistance
1 pin of R24, USB isolating chip U3 connects 1 pin of the overcurrent protection chip U9, and 1 pin of USB isolating chip U3 is also by electricity
Hold C5 and connect first ground wire, 2 pin of USB isolating chip U3 connect first ground wire, 3 pin of USB isolating chip U3,4
Pin and 5 pin all connect first ground wire by electric capacity C7,6 pin of USB isolating chip U3 and 7 pin respectively by resistance R21 and
R22 connects the 3rd group of I/O port of the line concentration controller, 6 pin of USB isolating chip U3 and 7 pin also respectively by resistance R23 and
8 pin of resistance R24 connection USB isolating chip U3,8 pin of USB isolating chip U3 are also connected with first ground wire, USB isolated core
9 pin of piece U3 connect second ground wire, and 11 pin of USB isolating chip U3 and 10 pin are connected by resistance R5 and resistance R6 respectively
2 pin of binding post X3B and 3 pin, 12 pin of USB isolating chip U3,13 pin and 14 pin all connect described second by electric capacity C8
Ground wire, 15 pin of USB isolating chip U3 connect second ground wire, and 16 pin of USB isolating chip U3 connect institute by electric capacity C6
The second ground wire is stated, 16 pin of USB isolating chip U3 are also connected with 1 pin of binding post X3B, and the 4 pin connection of binding post X3B is described
Second ground wire；The 3rd USB lead-out terminal includes binding post X4A, resistance R8 and resistance R9, the described 3rd digital isolation mode
Block include USB isolating chip U4, electric capacity C11, electric capacity C9, electric capacity C10, electric capacity C12, resistance R25, resistance R27, resistance R30 and
1 pin of resistance R31, USB isolating chip U4 connects 1 pin of the overcurrent protection chip U9, and 1 pin of USB isolating chip U4 also leads to
Cross electric capacity C9 and connect first ground wire, 2 pin of USB isolating chip U4 connect first ground wire, the 3 of USB isolating chip U4
Pin, 4 pin and 5 pin all connect first ground wire by electric capacity C11, and 6 pin of USB isolating chip U4 and 7 pin pass through resistance respectively
R25 and R27 connects the 4th group of I/O port of the line concentration controller, and 6 pin of USB isolating chip U4 and 7 pin also pass through resistance respectively
R30 and resistance R31 connect 8 pin of USB isolating chip U4, and 8 pin of USB isolating chip U4 are also connected with first ground wire, USB every
9 pin of off-chip piece U4 connect second ground wire, and 11 pin of USB isolating chip U4 and 10 pin pass through resistance R8 and resistance R9 respectively
2 pin of connection binding post X4A and 3 pin, 12 pin of USB isolating chip U4,13 pin and 14 pin are all described by electric capacity C12 connection
Second ground wire, 15 pin of USB isolating chip U4 connect second ground wire, and 16 pin of USB isolating chip U4 are connected by electric capacity C10
Second ground wire is connect, 16 pin of USB isolating chip U4 are also connected with 1 pin of binding post X4A, the 4 pin connection of binding post X4A
Second ground wire；The 4th USB lead-out terminal includes binding post X4B, resistance R11 and resistance R12, the 4th numeral
Isolation module includes USB isolating chip U5, electric capacity C14, electric capacity C16, electric capacity C17, electric capacity C15, resistance R32, resistance R33, electricity
1 pin of resistance R34 and resistance R35, USB isolating chip U5 connects 1 pin of the overcurrent protection chip U9, and the 1 of USB isolating chip U5
Pin connects first ground wire also by electric capacity C14, and 2 pin of USB isolating chip U5 connect first ground wire, USB isolated core
3 pin of piece U5,4 pin and 5 pin all connect first ground wire by electric capacity C16, and 6 pin of USB isolating chip U5 and 7 pin lead to respectively
The 5th group of I/O port that resistance R32 and R33 connects the line concentration controller is crossed, 6 pin of USB isolating chip U5 and 7 pin also lead to respectively
8 pin that resistance R34 and resistance R35 connect USB isolating chip U5 are crossed, 8 pin of USB isolating chip U5 are also connected with first ground
Line, 9 pin of USB isolating chip U5 connect second ground wire, and 11 pin of USB isolating chip U5 and 10 pin pass through resistance respectively
2 pin of R11 and resistance R12 connection binding post X4B and 3 pin, 12 pin of USB isolating chip U5,13 pin and 14 pin are all by electricity
Hold C17 and connect second ground wire, 15 pin of USB isolating chip U5 connect second ground wire, 16 pin of USB isolating chip U5
Second ground wire is connected by electric capacity C15,16 pin of USB isolating chip U5 are also connected with 1 pin of binding post X4B, terminals
4 pin of sub- X4B connect second ground wire.
Model SY6280 of the overcurrent protection chip U9.
The overcurrent protection chip U8, the overcurrent protection chip U10, the overcurrent protection chip U11 and the excessively stream
The model of protection chip U12 is SY6280.
The USB isolating chip U2, the USB isolating chip U3, the USB isolating chip U4 and the USB isolated core
The model of piece U5 is ADuM4160.
A kind of new USB isolation circuit described in the utility model, by achieving four road USB set using line concentration controller
Line control signal is exchanged, and is designed by dual power supply design, double earth wire and asked by the solution overcurrent isolation of overcurrent protection chip
The technical scheme of topic, it is achieved that the isolation of USB data transmission, is difficult to ensure that when solving USB data transmission that the high speed of data is handed over
Change, be difficult to the problem of multiple-channel output and high cost.
Description of the drawings
Fig. 1 is hardware elementary diagram block diagram of the present utility model；
Fig. 2 is the schematic diagram of USB input of the present utility model；
Fig. 3 is the schematic diagram of power source protective module of the present utility model；
Fig. 4 is the schematic diagram of the first Voltage stabilizing module of the present utility model；
Fig. 5 is the schematic diagram of the second Voltage stabilizing module of the present utility model and 24V power input terminal；
Fig. 6 is the schematic diagram of the first overcurrent protection module of the present utility model and the second overcurrent protection module；
Fig. 7 is the schematic diagram of the 3rd overcurrent protection module of the present utility model and the 4th overcurrent protection module；
Fig. 8 is the schematic diagram of a USB lead-out terminal of the present utility model and the 2nd USB lead-out terminal；
Fig. 9 is the schematic diagram of the 3rd USB lead-out terminal of the present utility model and the 4th USB lead-out terminal；
Figure 10 is the schematic diagram of the of the present utility model first digital isolation module and the second digital isolation module；
Figure 11 is the schematic diagram of the of the present utility model 3rd digital isolation module and the 4th digital isolation module.
Specific embodiment
A kind of new USB isolation circuit as shown in Figure 1, including USB input, power source protective module, the first voltage stabilizing
Module, line concentration controller, the first digital isolation module, the second digital isolation module, the 3rd digital isolation module, the 4th numeral every
From module, a USB lead-out terminal, the 2nd USB lead-out terminal, the 3rd USB lead-out terminal, the 4th USB lead-out terminal, the first mistake
Stream protection module, the second overcurrent protection module, the 3rd overcurrent protection module, the 4th overcurrent protection module, 24V power input
Son, the second Voltage stabilizing module, the first ground wire and the second ground wire, line concentration controller be provided with first group of I/O port, second group of I/O port, the 3rd group
I/O port, the 4th group of I/O port and the 5th group of I/O port, USB input connection first group of I/O port, the first digital isolation module connect
Second group of I/O port is connect, the second digital isolation module connects the 3rd group of I/O port, the 3rd digital isolation module connection is described
4th group of I/O port, the 4th digital isolation module connect the 5th group of I/O port, and USB input is also connected with power source protective module,
Power source protective module is also connected with the first Voltage stabilizing module, and the first Voltage stabilizing module is powered for line concentration controller, the first digital isolation module
A USB lead-out terminal is all connected with the first overcurrent protection module, the second digital isolation module and the second overcurrent protection module are equal
Connect the 2nd USB lead-out terminal, the 3rd digital isolation module and the 3rd overcurrent protection module are all connected with the 3rd USB lead-out terminal,
4th digital isolation module and the 4th overcurrent protection module are all connected with the 4th USB lead-out terminal, the first overcurrent protection module, second
Overcurrent protection module, the 3rd overcurrent protection module and the 4th overcurrent protection module are all connected with the second Voltage stabilizing module, the second voltage stabilizing mould
Block is also connected with 24V power input terminal, and USB input, power source protective module, the first Voltage stabilizing module and line concentration controller all connect
Connect the first ground wire, a USB lead-out terminal, the 2nd USB lead-out terminal, the 3rd USB lead-out terminal, the 4th USB lead-out terminal,
One overcurrent protection module, the second overcurrent protection module, the 3rd overcurrent protection module, the 4th overcurrent protection module, 24V power input
Terminal and the second Voltage stabilizing module are all connected with the second ground wire, the first digital isolation module, the second digital isolation module, the 3rd numeral every
The first ground wire and the second ground wire are all connected with from module and the 4th digital isolation module.
As in Figure 2-4, line concentration controller model GL850A, it is defeated that the line concentration controller is additionally provided with analog power
Enter end, digital power input, simulation ground wire input and digital ground wire input, the USB input attached bag includes terminals
2 pin of sub- X1, binding post X1 and 3 pin connect first group of I/O port of the line concentration controller, the 4 pin connection of binding post X1 the
One ground wire, the power source protective module include overcurrent protection chip U9, resistance R4, resistance R38 and light emitting diode DS1, described
First Voltage stabilizing module includes voltage-stablizer U6, electric capacity C30, inductance L2 and inductance L3, and 1 pin of binding post X1 is connected by inductance L1
5 pin of overcurrent protection chip U9 and 4 pin, 1 pin of overcurrent protection chip U9 are just passing through resistance R38 connecting luminous diode DS1
Pole, 2 pin of the negative pole connection overcurrent protection chip U9 of light emitting diode DS1, connect between 2 pin of overcurrent protection chip U9 and 3 pin
2 pin for being connected to resistance R4, overcurrent protection chip U9 are also connected with the first ground wire, and 1 pin of overcurrent protection chip U9 is also connected with voltage-stablizer
3 pin of U6,1 pin of voltage-stablizer U6 connect the first ground wire, 2 pin out-put supply VDD_3.3V, the power vd D_ of voltage-stablizer U6
3.3V connects the analog power input of the line concentration controller, and 1 pin of voltage-stablizer U6 connects the simulation of the line concentration controller
Ground wire input, is connected with 2 pin of electric capacity C30, voltage-stablizer U6 by inductance L2 output electricity between 2 pin of voltage-stablizer U6 and 1 pin
1 pin of source VDD_3.3VD, voltage-stablizer U6 exports ground wire VSS_DGND, power vd D_3.3VD by inductance L3 and connects the line concentration
The digital power input of controller, ground wire VSS_DGND connect the digital ground wire input of the line concentration controller, described steady
Model LM1117 of depressor U6.
As shown in figure 5, the 24V power input terminal includes binding post X2, diode D1 and diode D2, second is steady
Die block includes voltage-stablizer U7, electric capacity C31, electric capacity C32, resistance R39 and light emitting diode DS2, the 1 pin connection of binding post X2
The positive pole of diode D1,2 pin of the negative pole connection voltage-stablizer U7 of diode D1, the 1 of the 2 pin connection voltage-stablizer U7 of binding post X2
Pin, the positive pole of the 3 pin connection diode D2 of binding post X2,3 pin of the negative pole connection voltage-stablizer U7 of diode D2, binding post
4 pin of X2 connect second ground wire, are connected with the electric capacity C31 and electric capacity being connected in parallel between 3 pin of voltage-stablizer U7 and 5 pin
3 pin of C32, voltage-stablizer U7 connect also by the positive pole of resistance R39 connecting luminous diode DS2, the negative pole of light emitting diode DS2
Second ground wire, 5 pin of voltage-stablizer U7 are also connected with second ground wire, model RA2405YMD- of the voltage-stablizer U7
6W.
As shown in fig. 6-7, first overcurrent protection module includes overcurrent protection chip U8 and resistance R3, overcurrent protection core
5 pin of piece U8 and 4 pin are all connected with 3 pin of the voltage-stablizer U7, the 1 pin out-put supply VDD_BUS1 of overcurrent protection chip U8, mistake
2 pin of stream protection chip U8 connect second ground wire, are connected with resistance R3 between 3 pin of overcurrent protection chip U8 and 2 pin；Institute
Stating the second overcurrent protection module includes that overcurrent protection chip U10 and resistance R7,5 pin of overcurrent protection chip U10 and 4 pin are all connected with
3 pin of the voltage-stablizer U7,2 pin of 1 pin out-put supply VDD_BUS2, the overcurrent protection chip U10 of overcurrent protection chip U10 connect
Second ground wire is connect, between 3 pin of overcurrent protection chip U10 and 2 pin, is connected with resistance R7；3rd overcurrent protection module
Including overcurrent protection chip U11 and resistance R10,5 pin of overcurrent protection chip U11 and 4 pin are all connected with the 3 of the voltage-stablizer U7
Pin, 2 pin of 1 pin out-put supply VDD_BUS3, the overcurrent protection chip U11 of overcurrent protection chip U11 connect second ground wire,
Resistance R10 is connected between 3 pin of overcurrent protection chip U11 and 2 pin；4th overcurrent protection module includes overcurrent protection core
Piece U12 and resistance R13,5 pin of overcurrent protection chip U12 and 4 pin are all connected with 3 pin of the voltage-stablizer U7, overcurrent protection chip
2 pin of 1 pin out-put supply VDD_BUS4, the overcurrent protection chip U12 of U12 connect second ground wire, overcurrent protection chip U12
3 pin and 2 pin between be connected with resistance R13.
As illustrated in figs. 8-11, a USB lead-out terminal includes binding post X3A, resistance R1 and resistance R2, described
One digital isolation module include USB isolating chip U2, electric capacity C1, electric capacity C3, electric capacity C2, electric capacity C4, resistance R14, resistance R15,
1 pin of resistance R16 and resistance R17, USB isolating chip U2 connects 1 pin of the overcurrent protection chip U9, USB isolating chip U2
1 pin connect first ground wire also by electric capacity C1,2 pin of USB isolating chip U2 connect first ground wire, and USB isolates
3 pin of chip U2,4 pin and 5 pin all connect first ground wire, 6 pin of USB isolating chip U2 and 7 pin difference by electric capacity C3
Connect second group of I/O port of the line concentration controller by resistance R14 and R15,6 pin of USB isolating chip U2 and 7 pin are also distinguished
Connect 8 pin of USB isolating chip U2 by resistance R16 and resistance R17,8 pin of USB isolating chip U2 are also connected with first ground
Line, 9 pin of USB isolating chip U2 connect second ground wire, and 11 pin of USB isolating chip U2 and 10 pin pass through resistance R1 respectively
With 2 pin and 3 pin of resistance R2 connection binding post X3A, 12 pin of USB isolating chip U2,13 pin and 14 pin all pass through electric capacity C4
Connect second ground wire, 15 pin of USB isolating chip U2 connect second ground wire, and 16 pin of USB isolating chip U2 pass through
Electric capacity C2 connects second ground wire, and 16 pin of USB isolating chip U2 are also connected with 1 pin of binding post X3A, binding post X3A
4 pin connect second ground wire；The 2nd USB lead-out terminal includes binding post X3B, resistance R5 and resistance R6, described
Second digital isolation module includes USB isolating chip U3, electric capacity C5, electric capacity C7, electric capacity C6, electric capacity C8, resistance R21, resistance
1 pin of R22, resistance R23 and resistance R24, USB isolating chip U3 connects 1 pin of the overcurrent protection chip U9, USB isolated core
1 pin of piece U3 connects first ground wire also by electric capacity C5, and 2 pin of USB isolating chip U3 connect first ground wire, USB
3 pin of isolating chip U3,4 pin and 5 pin all connect first ground wire, 6 pin of USB isolating chip U3 and 7 pin by electric capacity C7
Connect the 3rd group of I/O port of the line concentration controller respectively by resistance R21 and R22,6 pin of USB isolating chip U3 and 7 pin are also
Connect 8 pin of USB isolating chip U3 respectively by resistance R23 and resistance R24,8 pin of USB isolating chip U3 are also connected with described the
One ground wire, 9 pin of USB isolating chip U3 connect second ground wire, and 11 pin of USB isolating chip U3 and 10 pin are respectively by electricity
2 pin of resistance R5 and resistance R6 connection binding post X3B and 3 pin, 12 pin of USB isolating chip U3,13 pin and 14 pin are all by electricity
Hold C8 and connect second ground wire, 15 pin of USB isolating chip U3 connect second ground wire, 16 pin of USB isolating chip U3
Second ground wire is connected by electric capacity C6,16 pin of USB isolating chip U3 are also connected with 1 pin of binding post X3B, binding post
4 pin of X3B connect second ground wire；The 3rd USB lead-out terminal includes binding post X4A, resistance R8 and resistance R9, institute
Stating the 3rd digital isolation module includes USB isolating chip U4, electric capacity C11, electric capacity C9, electric capacity C10, electric capacity C12, resistance R25, electricity
Resistance R27,1 pin of resistance R30 and resistance R31, USB isolating chip U4 connect 1 pin of the overcurrent protection chip U9, and USB isolates
1 pin of chip U4 connects first ground wire also by electric capacity C9, and 2 pin of USB isolating chip U4 connect first ground wire,
3 pin of USB isolating chip U4,4 pin and 5 pin all connect first ground wire by electric capacity C11,6 pin of USB isolating chip U4 and
7 pin connect the 4th group of I/O port of the line concentration controller, 6 pin of USB isolating chip U4 and 7 pin respectively by resistance R25 and R27
Also connect 8 pin of USB isolating chip U4 respectively by resistance R30 and resistance R31,8 pin of USB isolating chip U4 are also connected with described
First ground wire, 9 pin of USB isolating chip U4 connect second ground wire, and 11 pin of USB isolating chip U4 and 10 pin pass through respectively
2 pin of resistance R8 and resistance R9 connection binding post X4A and 3 pin, 12 pin of USB isolating chip U4,13 pin and 14 pin all pass through
Electric capacity C12 connects second ground wire, and 15 pin of USB isolating chip U4 connect second ground wire, and the 16 of USB isolating chip U4
Pin connects second ground wire by electric capacity C10, and 16 pin of USB isolating chip U4 are also connected with 1 pin of binding post X4A, wiring
4 pin of terminal X4A connect second ground wire；The 4th USB lead-out terminal includes binding post X4B, resistance R11 and resistance
R12, the described 4th digital isolation module include USB isolating chip U5, electric capacity C14, electric capacity C16, electric capacity C17, electric capacity C15, electricity
1 pin of resistance R32, resistance R33, resistance R34 and resistance R35, USB isolating chip U5 connects 1 pin of the overcurrent protection chip U9,
1 pin of USB isolating chip U5 connects first ground wire also by electric capacity C14, the 2 pin connection of USB isolating chip U5 described the
One ground wire, 3 pin of USB isolating chip U5,4 pin and 5 pin all connect first ground wire, USB isolating chip U5 by electric capacity C16
6 pin and 7 pin connect the 5th group of I/O port of the line concentration controller respectively by resistance R32 and R33, the 6 of USB isolating chip U5
Pin and 7 pin also connect 8 pin of USB isolating chip U5 respectively by resistance R34 and resistance R35, and 8 pin of USB isolating chip U5 are also
Connect first ground wire, 9 pin of USB isolating chip U5 connect second ground wire, 11 pin of USB isolating chip U5 and 10 pin
Connect 2 pin and 3 pin of binding post X4B respectively by resistance R11 and resistance R12,12 pin of USB isolating chip U5,13 pin and
14 pin all connect second ground wire by electric capacity C17, and 15 pin of USB isolating chip U5 connect second ground wire, and USB isolates
16 pin of chip U5 connect second ground wire by electric capacity C15, and 16 pin of USB isolating chip U5 are also connected with binding post X4B
1 pin, 4 pin of binding post X4B connect second ground wire.
Model SY6280 of the overcurrent protection chip U9.
The overcurrent protection chip U8, the overcurrent protection chip U10, the overcurrent protection chip U11 and the excessively stream
The model of protection chip U12 is SY6280.
The USB isolating chip U2, the USB isolating chip U3, the USB isolating chip U4 and the USB isolated core
The model of piece U5 is ADuM4160.
During work, USB input input external USB data-signal, and outside 5V power supply is input into, outside 5V power supply is passed through
Power source protective module is accessed after inductance L1 filtering, output end is connected the first Voltage stabilizing module, the first voltage stabilizing mould by power source protective module
Block exports VDD_3.3V power supply and VDD_3.3VD power supply, respectively the analog power input to the line concentration controller and numeral
Power input is powered, and USB input is sub simultaneously by external USB data signal transmission in the line concentration controller, the collection
The usb signal of input is divided into 4 road usb signals by lane controller, and respectively by the first digital isolation module, the second numeral isolation
Module, the 3rd digital isolation module and the 4th digital isolation module by usb signal be respectively transmitted to a USB lead-out terminal, the
Two USB lead-out terminals, the 3rd USB lead-out terminal and the 4th USB lead-out terminal, realize four road USB set line control signals and exchange,
The 24V power supply for exporting is introduced the second Voltage stabilizing module, the second voltage stabilizing by preventing reversed diode D1 by 24V power input terminal
Module passes through the first overcurrent protection module, the second overcurrent protection module, the 3rd overcurrent protection module and the 4th overcurrent protection respectively
Module is supplied to a USB lead-out terminal, the 2nd USB lead-out terminal, the 3rd USB lead-out terminal and the 4th USB lead-out terminal
Electricity, it is achieved that USB input and USB lead-out terminal between power supply isolation, and be simultaneously achieved USB input signal with
The isolation of the ground wire between USB output signal.
Model GL850A of line concentration controller of the present utility model, the line concentration controller observe USB2.0 specification can
To realize the processor of 8 position RISC collection line traffic controls.
A kind of new USB isolation circuit described in the utility model, by achieving four road USB set using line concentration controller
Line control signal is exchanged, and is designed by dual power supply design, double earth wire and asked by the solution overcurrent isolation of overcurrent protection chip
The technical scheme of topic, it is achieved that the isolation of USB data transmission, is difficult to ensure that when solving USB data transmission that the high speed of data is handed over
Change, be difficult to the problem of multiple-channel output and high cost.
Claims (8)
1. a kind of new USB isolation circuit, it is characterised in that：Including USB input, power source protective module, the first voltage stabilizing mould
Block, line concentration controller, the first digital isolation module, the second digital isolation module, the 3rd digital isolation module, the 4th numeral isolation
Module, a USB lead-out terminal, the 2nd USB lead-out terminal, the 3rd USB lead-out terminal, the 4th USB lead-out terminal, the first excessively stream
Protection module, the second overcurrent protection module, the 3rd overcurrent protection module, the 4th overcurrent protection module, 24V power input terminal,
Second Voltage stabilizing module, the first ground wire and the second ground wire, line concentration controller are provided with first group of I/O port, second group of I/O port, the 3rd group of IO
Mouth, the 4th group of I/O port and the 5th group of I/O port, USB input connection first group of I/O port, the first digital isolation module connection
Second group of I/O port, the second digital isolation module connect the 3rd group of I/O port, the 3rd digital isolation module connection described the
Four groups of I/O ports, the 4th digital isolation module connect the 5th group of I/O port, and USB input is also connected with power source protective module, electricity
Source protection module is also connected with the first Voltage stabilizing module, and the first Voltage stabilizing module is powered for line concentration controller, the first digital isolation module and
First overcurrent protection module is all connected with a USB lead-out terminal, and the second digital isolation module and the second overcurrent protection module all connect
The 2nd USB lead-out terminal is connect, the 3rd digital isolation module and the 3rd overcurrent protection module are all connected with the 3rd USB lead-out terminal, the
Four digital isolation modules and the 4th overcurrent protection module are all connected with the 4th USB lead-out terminal, the first overcurrent protection module, the second mistake
Stream protection module, the 3rd overcurrent protection module and the 4th overcurrent protection module are all connected with the second Voltage stabilizing module, the second Voltage stabilizing module
24V power input terminal is also connected with, USB input, power source protective module, the first Voltage stabilizing module and line concentration controller are all connected with
First ground wire, a USB lead-out terminal, the 2nd USB lead-out terminal, the 3rd USB lead-out terminal, the 4th USB lead-out terminal, first
Overcurrent protection module, the second overcurrent protection module, the 3rd overcurrent protection module, the 4th overcurrent protection module, 24V power input
Son and the second Voltage stabilizing module are all connected with the second ground wire, the first digital isolation module, the second digital isolation module, the 3rd numeral isolation
Module and the 4th digital isolation module are all connected with the first ground wire and the second ground wire.
2. a kind of new USB isolation circuit as claimed in claim 1, it is characterised in that：The line concentration controller model
GL850A, the line concentration controller are additionally provided with analog power input, digital power input, simulation ground wire input and numeral
Ground wire input, the USB input attached bag includes 2 pin of binding post X1, binding post X1 and 3 pin connect the collection line traffic control
First group of I/O port of device, 4 pin of binding post X1 connect the first ground wire, and the power source protective module includes overcurrent protection chip
U9, resistance R4, resistance R38 and light emitting diode DS1, first Voltage stabilizing module include voltage-stablizer U6, electric capacity C30, inductance L2
Connect 5 pin and 4 pin of overcurrent protection chip U9, overcurrent protection chip U9 by inductance L1 with 1 pin of inductance L3, binding post X1
1 pin by the positive pole of resistance R38 connecting luminous diode DS1, the negative pole connection overcurrent protection chip U9 of light emitting diode DS1
2 pin, be connected with resistance R4 between 2 pin of overcurrent protection chip U9 and 3 pin, 2 pin of overcurrent protection chip U9 are also connected with first
Ground wire, 1 pin of overcurrent protection chip U9 are also connected with 3 pin of voltage-stablizer U6, and 1 pin of voltage-stablizer U6 connects the first ground wire, voltage-stablizer
The 2 pin out-put supply VDD_3.3V of U6, the power vd D_3.3V connect the analog power input of the line concentration controller, surely
1 pin of depressor U6 connects the simulation ground wire input of the line concentration controller, is connected with electricity between 2 pin of voltage-stablizer U6 and 1 pin
Hold 2 pin of C30, voltage-stablizer U6 by 1 pin of inductance L2 out-put supply VDD_3.3VD, voltage-stablizer U6 by inductance L3 output ground
Line VSS_DGND, power vd D_3.3VD connect the digital power input of the line concentration controller, and ground wire VSS_DGND connects institute
State the digital ground wire input of line concentration controller, model LM1117 of the voltage-stablizer U6.
3. a kind of new USB isolation circuit as claimed in claim 1, it is characterised in that：The 24V power input terminal includes
Binding post X2, diode D1 and diode D2, the second Voltage stabilizing module include voltage-stablizer U7, electric capacity C31, electric capacity C32, resistance
The positive pole of the 1 pin connection diode D1 of R39 and light emitting diode DS2, binding post X2, the negative pole connection voltage-stablizer of diode D1
2 pin of U7,1 pin of the 2 pin connection voltage-stablizer U7 of binding post X2, the positive pole of the 3 pin connection diode D2 of binding post X2, two
3 pin of the negative pole connection voltage-stablizer U7 of pole pipe D2,4 pin of binding post X2 connect second ground wire, 3 pin of voltage-stablizer U7 and
3 pin of the electric capacity C31 and electric capacity C32 being connected in parallel, voltage-stablizer U7 are connected between 5 pin also by resistance R39 connection luminous two
The positive pole of pole pipe DS2, the negative pole of light emitting diode DS2 connect second ground wire, and 5 pin of voltage-stablizer U7 are also connected with described second
Ground wire, model RA2405YMD-6W of the voltage-stablizer U7.
4. a kind of new USB isolation circuit as claimed in claim 1, it is characterised in that：The first overcurrent protection module bag
Include overcurrent protection chip U8 and resistance R3,5 pin of overcurrent protection chip U8 and 4 pin are all connected with 3 pin of the voltage-stablizer U7, excessively stream
2 pin of 1 pin out-put supply VDD_BUS1, the overcurrent protection chip U8 of protection chip U8 connect second ground wire, overcurrent protection
Resistance R3 is connected between 3 pin of chip U8 and 2 pin；Second overcurrent protection module includes overcurrent protection chip U10 and electricity
Resistance R7,5 pin of overcurrent protection chip U10 and 4 pin are all connected with 3 pin of the voltage-stablizer U7, and 1 pin of overcurrent protection chip U10 is defeated
2 pin for going out power vd D_BUS2, overcurrent protection chip U10 connect second ground wire, 3 pin of overcurrent protection chip U10 and 2 pin
Between be connected with resistance R7；3rd overcurrent protection module includes overcurrent protection chip U11 and resistance R10, overcurrent protection core
5 pin of piece U11 and 4 pin are all connected with 3 pin of the voltage-stablizer U7, the 1 pin out-put supply VDD_BUS3 of overcurrent protection chip U11,
2 pin of overcurrent protection chip U11 connect second ground wire, are connected with resistance between 3 pin of overcurrent protection chip U11 and 2 pin
R10；4th overcurrent protection module includes overcurrent protection chip U12 and resistance R13,5 pin and 4 of overcurrent protection chip U12
Pin is all connected with 3 pin of the voltage-stablizer U7, the 1 pin out-put supply VDD_BUS4 of overcurrent protection chip U12, overcurrent protection chip
2 pin of U12 connect second ground wire, are connected with resistance R13 between 3 pin of overcurrent protection chip U12 and 2 pin.
5. a kind of new USB isolation circuit as claimed in claim 1, it is characterised in that：The first USB lead-out terminal includes
Binding post X3A, resistance R1 and resistance R2, the described first digital isolation module include USB isolating chip U2, electric capacity C1, electric capacity
C3, electric capacity C2, electric capacity C4, resistance R14, resistance R15, resistance R16 and resistance R17, USB isolating chip U2 the connection of 1 pin described
1 pin of overcurrent protection chip U9,1 pin of USB isolating chip U2 connect first ground wire, USB isolated core also by electric capacity C1
2 pin of piece U2 connect first ground wire, and 3 pin of USB isolating chip U2,4 pin and 5 pin all connect described first by electric capacity C3
Ground wire, 6 pin of USB isolating chip U2 and 7 pin connect second group of IO of the line concentration controller respectively by resistance R14 and R15
Mouth, 6 pin of USB isolating chip U2 and 7 pin also connect 8 pin of USB isolating chip U2 respectively by resistance R16 and resistance R17,
8 pin of USB isolating chip U2 are also connected with first ground wire, and 9 pin of USB isolating chip U2 connect second ground wire, USB every
11 pin of off-chip piece U2 and 10 pin connect 2 pin and 3 pin of binding post X3A, USB isolated core respectively by resistance R1 and resistance R2
12 pin of piece U2,13 pin and 14 pin all connect second ground wire by electric capacity C4, and the 15 pin connection of USB isolating chip U2 is described
Second ground wire, 16 pin of USB isolating chip U2 connect second ground wire by electric capacity C2, and 16 pin of USB isolating chip U2 are also
1 pin of connection binding post X3A, 4 pin of binding post X3A connect second ground wire；The 2nd USB lead-out terminal includes
Binding post X3B, resistance R5 and resistance R6, the described second digital isolation module include USB isolating chip U3, electric capacity C5, electric capacity
C7, electric capacity C6, electric capacity C8, resistance R21, resistance R22, resistance R23 and resistance R24, USB isolating chip U3 the connection of 1 pin described
1 pin of overcurrent protection chip U9,1 pin of USB isolating chip U3 connect first ground wire, USB isolated core also by electric capacity C5
2 pin of piece U3 connect first ground wire, and 3 pin of USB isolating chip U3,4 pin and 5 pin all connect described first by electric capacity C7
Ground wire, 6 pin of USB isolating chip U3 and 7 pin connect the 3rd group of IO of the line concentration controller respectively by resistance R21 and R22
Mouth, 6 pin of USB isolating chip U3 and 7 pin also connect 8 pin of USB isolating chip U3 respectively by resistance R23 and resistance R24,
8 pin of USB isolating chip U3 are also connected with first ground wire, and 9 pin of USB isolating chip U3 connect second ground wire, USB every
11 pin of off-chip piece U3 and 10 pin connect 2 pin and 3 pin of binding post X3B, USB isolated core respectively by resistance R5 and resistance R6
12 pin of piece U3,13 pin and 14 pin all connect second ground wire by electric capacity C8, and the 15 pin connection of USB isolating chip U3 is described
Second ground wire, 16 pin of USB isolating chip U3 connect second ground wire by electric capacity C6, and 16 pin of USB isolating chip U3 are also
1 pin of connection binding post X3B, 4 pin of binding post X3B connect second ground wire；The 3rd USB lead-out terminal includes
Binding post X4A, resistance R8 and resistance R9, the described 3rd digital isolation module include USB isolating chip U4, electric capacity C11, electric capacity
C9, electric capacity C10, electric capacity C12, resistance R25, the 1 pin connection institute of resistance R27, resistance R30 and resistance R31, USB isolating chip U4
1 pin of overcurrent protection chip U9 is stated, 1 pin of USB isolating chip U4 connects first ground wire also by electric capacity C9, and USB isolates
2 pin of chip U4 connect first ground wire, and 3 pin of USB isolating chip U4,4 pin and 5 pin are all described by electric capacity C11 connection
First ground wire, 6 pin of USB isolating chip U4 and 7 pin connect the 4th of the line concentration controller respectively by resistance R25 and R27
Group I/O port, 6 pin of USB isolating chip U4 and 7 pin also connect the 8 of USB isolating chip U4 respectively by resistance R30 and resistance R31
Pin, 8 pin of USB isolating chip U4 are also connected with first ground wire, and 9 pin of USB isolating chip U4 connect second ground wire,
11 pin of USB isolating chip U4 and 10 pin connect 2 pin and 3 pin of binding post X4A, USB respectively by resistance R8 and resistance R9
12 pin of isolating chip U4,13 pin and 14 pin all connect second ground wire, 15 pin of USB isolating chip U4 by electric capacity C12
Connect second ground wire, 16 pin of USB isolating chip U4 connect second ground wire, USB isolating chip U4 by electric capacity C10
16 pin be also connected with 1 pin of binding post X4A, 4 pin of binding post X4A connect second ground wire；The 4th USB output
Terminal includes binding post X4B, resistance R11 and resistance R12, and the described 4th digital isolation module includes USB isolating chip U5, electricity
Hold C14, electric capacity C16, electric capacity C17, electric capacity C15, resistance R32, resistance R33, resistance R34 and resistance R35, USB isolating chip U5
1 pin connect 1 pin of the overcurrent protection chip U9,1 pin of USB isolating chip U5 connects described first also by electric capacity C14
Ground wire, 2 pin of USB isolating chip U5 connect first ground wire, and 3 pin of USB isolating chip U5,4 pin and 5 pin all pass through electric capacity
C16 connects first ground wire, and 6 pin of USB isolating chip U5 and 7 pin connect the collection line traffic control by resistance R32 and R33 respectively
5th group of I/O port of device processed, 6 pin of USB isolating chip U5 and 7 pin also connect USB isolation by resistance R34 and resistance R35 respectively
8 pin of chip U5,8 pin of USB isolating chip U5 are also connected with first ground wire, the 9 pin connection of USB isolating chip U5 described the
Two ground wires, 11 pin of USB isolating chip U5 and 10 pin connect 2 pin of binding post X4B respectively by resistance R11 and resistance R12
With 3 pin, 12 pin of USB isolating chip U5,13 pin and 14 pin all connect second ground wire, USB isolating chip by electric capacity C17
15 pin of U5 connect second ground wire, and 16 pin of USB isolating chip U5 connect second ground wire by electric capacity C15, USB every
16 pin of off-chip piece U5 are also connected with 1 pin of binding post X4B, and 4 pin of binding post X4B connect second ground wire.
6. a kind of new USB isolation circuit as claimed in claim 2, it is characterised in that：The type of the overcurrent protection chip U9
Number be SY6280.
7. a kind of new USB isolation circuit as claimed in claim 4, it is characterised in that：The overcurrent protection chip U8, described
The model of overcurrent protection chip U10, the overcurrent protection chip U11 and the overcurrent protection chip U12 is SY6280.
8. a kind of new USB isolation circuit as claimed in claim 5, it is characterised in that：The USB isolating chip U2, described
The model of USB isolating chip U3, the USB isolating chip U4 and the USB isolating chip U5 is ADuM4160.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620633464.0U CN206003085U (en) | 2016-06-23 | 2016-06-23 | A kind of new USB isolation circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620633464.0U CN206003085U (en) | 2016-06-23 | 2016-06-23 | A kind of new USB isolation circuit |
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| CN206003085U true CN206003085U (en) | 2017-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878415A (en) * | 2017-05-12 | 2018-11-23 | 展讯通信（上海）有限公司 | Simulation input/output unit layout design method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878415A (en) * | 2017-05-12 | 2018-11-23 | 展讯通信（上海）有限公司 | Simulation input/output unit layout design method |
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