CN209313715U - Double mode isolation control circuit - Google Patents
Double mode isolation control circuit Download PDFInfo
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- CN209313715U CN209313715U CN201920167311.5U CN201920167311U CN209313715U CN 209313715 U CN209313715 U CN 209313715U CN 201920167311 U CN201920167311 U CN 201920167311U CN 209313715 U CN209313715 U CN 209313715U
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Abstract
The utility model discloses a kind of double mode isolation control circuits, it passes through the coordinate design to internal power module, switch control unit and isolated location, the work of isolated location can be carried out via two ways, the internal electric source module generates control signal when off, when the switch control unit is in blank state, the isolated location exports isolation signals；When the switch control unit is in running order, the isolated location exports isolation signals.To improve the flexibility of isolated location output.The circuit power consumption is low, and flexibility ratio is high, it can be achieved that high reusability in backend application.
Description
Technical field
The utility model relates to circuit field, specially a kind of double mode isolation control circuit.
Background technique
Integrated circuit is essential core devices in national product life.
Integrated circuit enters after deep-submicron, and scale is increasing, and integrated level is higher and higher.Therefore the domain of stratification
Design scheme is more and more important.When carrying out rear end design, integrated circuit diagram is usually allocated as several modules, gives respectively
It realizes, is then integrated in top layer.
Wherein, the low power dissipation design scheme of integrated circuit, it will usually introduce several particular criteria unit, such as switch and every
From unit etc., switch is for closing circuit module, and isolated location is used to generate fixed level after circuit module closing and prevent
Electric leakage caused by high-impedance state.More design is needed at present rationally, the side of the isolation control signal of the back-end realization based on module level
Case.
Utility model content
The utility model aim be to provide it is a kind of based on can power cutoff domain isolation signals circuit, to further decrease
Power consumption improves circuit multiplexer rate.
In order to achieve the above object, the technical solution of the utility model includes a kind of double mode isolation control circuit, special
Sign is, the first end of the double mode isolation control circuit is used for and enable signal module be isolated is connected, second end for
Internal electric source module is connected, and third end with isolated location for being connected；
When the output end of the isolation enable signal module is blank state, the internal electric source module shutdown is described double
Mode isolation control circuit exports isolation signals, and control isolated location is isolated；
When the output end of the isolation enable signal module is in running order, the double mode isolation control circuit output
Isolation signals, control isolated location are isolated.
Optionally, the isolated location is one or more.
It optionally, further include buffer, the buffer is arranged in the double mode isolation control circuit and isolated location
Between.
Optionally, the double mode isolation control circuit is to latch stabilization control circuit.
Optionally, the latch stabilization control circuit includes: the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor, diode and differential coupling
Circuit, the 7th metal-oxide-semiconductor, the control terminal of the 8th metal-oxide-semiconductor, diode cathode be connected with first end, the anode of diode connects
The input terminal on ground, the 7th metal-oxide-semiconductor is connected with second end, the efferent duct of the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor it is defeated
Enter end and output end input terminal different from differential coupling circuit to be connected, the differential coupling circuit and internal electric source module phase
Connect, and third end of the output end of differential coupling circuit as double mode isolation control circuit.
Optionally, the differential coupling circuit include: the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, third metal-oxide-semiconductor, the 4th metal-oxide-semiconductor,
The control terminal of 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor, first metal-oxide-semiconductor and the 5th metal-oxide-semiconductor is connected and defeated with differential coupling circuit
Outlet is connected, and the control terminal of second metal-oxide-semiconductor and the 6th metal-oxide-semiconductor is connected with the output end of the 7th metal-oxide-semiconductor, the 5th MOS
It manages, the input terminal of the 6th metal-oxide-semiconductor is connected with internal electric source module, the output of the output end and the 7th metal-oxide-semiconductor of the 5th metal-oxide-semiconductor
End is connected, and the output end of the 6th metal-oxide-semiconductor is connected with the output end of differential coupling circuit, the third metal-oxide-semiconductor, the 4th
The control terminal of metal-oxide-semiconductor is connected with internal electric source module, the input terminal of the input terminal of the third metal-oxide-semiconductor and the 8th metal-oxide-semiconductor, the 7th
The output end of metal-oxide-semiconductor is connected, and the output end of the third metal-oxide-semiconductor is connected with the input terminal of the first metal-oxide-semiconductor, the third metal-oxide-semiconductor
Output end ground connection, the input terminal of the 4th metal-oxide-semiconductor is connected with the output end of coupling circuit, the output of the 4th metal-oxide-semiconductor
End ground connection.
Double mode isolation control circuit according to the present utility model, by internal power module VDDI, switch control
The work of the coordinate design of unit and isolated location, isolated location can be carried out via two ways, and the internal electric source module exists
Control signal is generated when shutdown, when the switch control unit is in blank state, the isolated location exports isolation signals；Institute
State switch control unit it is in running order when, the isolated location exports isolation signals.To improve isolated location output
Flexibility.The circuit power consumption is low, and flexibility ratio is high, it can be achieved that high reusability in backend application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the double mode isolation control circuit of the utility model embodiment；
Fig. 2 is the truth table of the double mode isolation control circuit of the utility model embodiment；
Fig. 3 is the electrical block diagram of the double mode isolation control circuit of the utility model embodiment.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this reality
With novel protected range.
In conjunction with attached drawing, the specific implementation of the utility model is illustrated and is illustrated:
A kind of double mode isolation control circuit 4 is shown with reference to Fig. 1, Fig. 1, the of the double mode isolation control circuit 4
One end is used for and enable signal module 2 be isolated is connected, second end for being connected with internal electric source module 1, third end for every
It is connected from unit 3；
When the output end EN of the isolation enable signal module 2 is blank state, the internal electric source module 1 is turned off, institute
It states double mode isolation control circuit 4 and exports isolation signals, control isolated location 3 is isolated；
When the output end of the isolation enable signal module 2 is in running order, the double mode isolation control circuit 4 is defeated
Isolation signals out, control isolated location 3 are isolated.
Specifically, isolation enable signal module (EN) 2 signal is being isolated when isolation enable signal module (EN) 2 is vacant
Enable signal inside modules are pulled down.At this point, isolated location (Z) 3 follows internal electric source module (VDDI) 1 and changes, work as inside
When 1 internal electric source of power module (VDDI) becomes 0, the output end of double mode isolation control circuit 4 becomes 1, controls isolated location 3
Export isolation signals.
When internal electric source module (VDDI) 1, the output end of double mode isolation control circuit 4 becomes 0, the normal work of circuit
Make.
When isolation enable signal module (EN) 2 is driven, if isolation enable signal module (EN) 2 is 0, list is isolated
Member (Z) 3 is not responding to isolation enable signal module (EN) 2；
When it is 1 that enable signal module (EN) 2, which is isolated, the output end of double mode isolation control circuit 4 becomes 1, same defeated
Isolation signals out are equivalent to isolated location (Z) 3 and are isolated the control of enable signal module (EN) 2.
In the present embodiment, double mode isolation control circuit drives an isolated location.Isolation letter in other embodiments
Number it can also enable and drive n isolated location 3.
In other embodiments, buffering can also be set between the double mode isolation control circuit and isolated location
Device.Buffer helps to improve driving capability.And the buffer increased by the multistage size step by step of setting, it advantageously forms good
Good driving capability, convenient for driving multiple isolated locations.
In the present embodiment, the output end (EN) of the isolation enable signal module can be vacant, but when user needs spy
When other timing Design, the output end (EN) of isolation enable signal module can also be directly controlled.
When the module for needing to turn off is the biggish MCU module of power consumption, when MCU does not work, upper layer circuit can be switched off,
It needs to consider isolation module at this time to be isolated.The double mode isolation control circuit of the utility model embodiment may be implemented from movable property
Raw isolation signals, while alternately, user can also accurately control the timing of isolation signals generation if necessary, to meet certain
A little special circuit requirements, increase the reusability that can turn off module.
According to the above mechanism, Fig. 2 shows truth table schematic diagrames.
In the present embodiment, upper layer circuit can both ignore isolation enable signal, also can be used isolation enable signal with
Meet certain timing or requirement in logic, provides low-power consumption, the stone design basis of high flexibility.
In the present embodiment, referring to FIG. 3, the double mode isolation control circuit is to latch stabilization control circuit.It is described
Latching stabilization control circuit includes: the 7th metal-oxide-semiconductor M7, the 8th metal-oxide-semiconductor M8, diode D1 and differential coupling circuit, and the described 7th
Metal-oxide-semiconductor, the control terminal of the 8th metal-oxide-semiconductor, diode cathode be connected with first end, the plus earth of diode, the 7th MOS
The input terminal of pipe is connected with second end, the efferent duct of the 7th metal-oxide-semiconductor, the input terminal of the 8th metal-oxide-semiconductor and output end with
The different input terminals of differential coupling circuit are connected, and the differential coupling circuit is connected with internal electric source module, and differential coupling electricity
Third end of the output end on road as double mode isolation control circuit, and the differential coupling circuit is as latch, for locking
Deposit the latch of stabilization control circuit output signal.
Wherein, internal when the voltage of output end (EN) of enable signal module is isolated from 0 to 1 or EN remains 0
When the voltage of power module (VDDI) is from high voltage to 0；It remains stationary at the beginning, it is rapid in the switching threshold for reaching latch
Switching, because of the effect of positive feedback, the output end (Z) for latching stabilization control circuit becomes 0 from 1 rapidly；In isolation enable signal
The voltage of the output end (EN) of module is being latched from 1 to 0 or when the voltage of internal electric source module (VDDI) is from 0 to high voltage
Nearby switching, the output end (Z) for latching stabilization control circuit become 1 from 0 to another switching threshold of device rapidly.
Wherein, the differential coupling circuit includes: the first metal-oxide-semiconductor M1, the second metal-oxide-semiconductor M2, third metal-oxide-semiconductor M3, the 4th MOS
The control terminal of pipe M4, the 5th metal-oxide-semiconductor M5, the 6th metal-oxide-semiconductor M6, first metal-oxide-semiconductor and the 5th metal-oxide-semiconductor is connected and and differential coupling
The output end of circuit is connected, and the control terminal of second metal-oxide-semiconductor and the 6th metal-oxide-semiconductor is connected with the output end of the 7th metal-oxide-semiconductor, described
5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor input terminal be connected with internal electric source module, the output end and the 7th MOS of the 5th metal-oxide-semiconductor
The output end of pipe is connected, and the output end of the 6th metal-oxide-semiconductor is connected with the output end of differential coupling circuit, the third metal-oxide-semiconductor,
The control terminal of 4th metal-oxide-semiconductor is connected with internal electric source module, the input terminal of the input terminal of the third metal-oxide-semiconductor and the 8th metal-oxide-semiconductor,
The output end of 7th metal-oxide-semiconductor is connected, and the output end of the third metal-oxide-semiconductor is connected with the input terminal of the first metal-oxide-semiconductor, the third
The output end of metal-oxide-semiconductor is grounded, and the input terminal of the 4th metal-oxide-semiconductor is connected with the output end of coupling circuit, the 4th metal-oxide-semiconductor
Output end ground connection.
Wherein, third metal-oxide-semiconductor M3, the 4th metal-oxide-semiconductor M4 in the present embodiment are used to increase differential coupling in transition region
Gain, reduces the power consumption of transition region, and circuit is reliably switched.
Wherein, the utility model is connected with diode D1 in the output end EN of the isolation enable signal module, even if every
It is not used from enable signal, i.e., vacant, the diode D1 that EN is reversed at this time pulls down to 0, also can produce isolation signals；And work as
Isolation enable signal module is connected to upper layer module as isolation enable signal, can directly control isolation using isolation enable signal
Unit.The double mode isolation control circuit of the utility model embodiment can both ignore isolation enable signal, oneself generates isolation
Signal can be used isolation enable signal also to meet certain timing or requirement in logic, provide flexibility, facilitate work
It is designed for stone.
Specifically, when isolation enable signal module (EN) 2 do not drive or switch control unit (EN) 2 by it is vacant be 0
When, M7 conducting, isolated location (Z) 3 according to can power cutoff internal electric source module (VDDI) 1 variation and change.
When internal electric source module (VDDI) 1 turns off, the output of isolated location (Z) 3 is 1；It otherwise is 0.
When it is 1 that enable signal module (EN) 2, which is isolated, M8 conducting, output isolation control signal is 1, i.e. isolated location (Z)
3 outputs are 1.
In summary:
Double mode isolation control circuit according to the present utility model, by enabled to internal power module VDDI, isolation
The work of the coordinate design of signaling module and isolated location, isolated location can be carried out via two ways, the internal electric source mould
Block generates control signal when off, when the switch control unit is in blank state, the isolated location output isolation letter
Number；When the switch control unit is in running order, the isolated location exports isolation signals.To improve isolated location
The flexibility of output.The circuit power consumption is low, and flexibility ratio is high, it can be achieved that high reusability in backend application.
It should be understood that embodiment disclosed in the utility model is not limited to specific structure disclosed herein, processing
Step or material, and the equivalent substitute for these features that those of ordinary skill in the related art are understood should be extended to.Also answer
When understanding, term as used herein is used only for the purpose of describing specific embodiments, and is not intended to limit.
" one embodiment " or " embodiment " mentioned in specification means the special characteristic described in conjunction with the embodiments, structure
Or characteristic includes at least one embodiment of the utility model.Therefore, the phrase " one that specification various places throughout occurs
A embodiment " or " embodiment " might not refer both to the same embodiment.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.System embodiment described above is only schematical, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not
In the case where making the creative labor, it can understand and implement.
The above is only the specific embodiment of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection scope of the application.
Claims (6)
1. a kind of double mode isolation control circuit, which is characterized in that the first end of the double mode isolation control circuit be used for
Enable signal module is isolated to be connected, second end with internal electric source module for being connected, and third end with isolated location for being connected；
When the output end of the isolation enable signal module is blank state, the internal electric source module shutdown, the double mode
Isolation control circuit exports isolation signals, and control isolated location is isolated；
When the output end of the isolation enable signal module is in running order, the double mode isolation control circuit output isolation
Signal, control isolated location are isolated.
2. double mode isolation control circuit according to claim 1, which is characterized in that the isolated location is one or more
It is a.
3. double mode isolation control circuit according to claim 1, which is characterized in that it further include buffer, the buffering
Device is arranged between the double mode isolation control circuit and isolated location.
4. double mode isolation control circuit according to claim 1, which is characterized in that the double mode isolation control circuit
To latch stabilization control circuit.
5. double mode isolation control circuit according to claim 4, which is characterized in that the latch stabilization control circuit packet
Include: the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor, diode and differential coupling circuit, the 7th metal-oxide-semiconductor, the 8th metal-oxide-semiconductor control terminal,
The cathode of diode is connected with first end, the plus earth of diode, and the input terminal of the 7th metal-oxide-semiconductor is connected with second end,
The efferent duct of 7th metal-oxide-semiconductor, the input terminal of the 8th metal-oxide-semiconductor and output end input terminal different from differential coupling circuit
It is connected, the differential coupling circuit is connected with internal electric source module, and the output end of differential coupling circuit is isolated as double mode
The third end of control circuit, and the differential coupling circuit is believed as latch for latch stabilization control circuit output
Number latch.
6. double mode isolation control circuit according to claim 5, which is characterized in that the differential coupling circuit includes:
First metal-oxide-semiconductor, the second metal-oxide-semiconductor, third metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor, first metal-oxide-semiconductor and
The control terminal of five metal-oxide-semiconductors is connected and is connected with the output end of differential coupling circuit, the control of second metal-oxide-semiconductor and the 6th metal-oxide-semiconductor
End processed is connected with the output end of the 7th metal-oxide-semiconductor, input terminal and the internal electric source module phase of the 5th metal-oxide-semiconductor, the 6th metal-oxide-semiconductor
Even, the output end of the 5th metal-oxide-semiconductor is connected with the output end of the 7th metal-oxide-semiconductor, the output end and difference coupling of the 6th metal-oxide-semiconductor
The output end for closing circuit is connected, the third metal-oxide-semiconductor, the 4th MOS pipe control terminal be connected with internal electric source module, described the
The input terminal of three metal-oxide-semiconductors is connected with the output end of the input terminal of the 8th metal-oxide-semiconductor, the 7th metal-oxide-semiconductor, the output of the third metal-oxide-semiconductor
End is connected with the input terminal of the first metal-oxide-semiconductor, the output end ground connection of the third metal-oxide-semiconductor, the input terminal and coupling of the 4th metal-oxide-semiconductor
The output end for closing circuit is connected, the output end ground connection of the 4th metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167311.5U CN209313715U (en) | 2019-01-30 | 2019-01-30 | Double mode isolation control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167311.5U CN209313715U (en) | 2019-01-30 | 2019-01-30 | Double mode isolation control circuit |
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| Publication Number | Publication Date |
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| CN209313715U true CN209313715U (en) | 2019-08-27 |
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| CN201920167311.5U Active CN209313715U (en) | 2019-01-30 | 2019-01-30 | Double mode isolation control circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617381A (en) * | 2019-01-30 | 2019-04-12 | 无锡华大国奇科技有限公司 | Double mode isolation control circuit |
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2019
- 2019-01-30 CN CN201920167311.5U patent/CN209313715U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617381A (en) * | 2019-01-30 | 2019-04-12 | 无锡华大国奇科技有限公司 | Double mode isolation control circuit |
| CN109617381B (en) * | 2019-01-30 | 2024-03-22 | 无锡华大国奇科技有限公司 | Dual mode isolation control circuit |
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