CN110380381A - A kind of electrical fuse of multiple transmission modes - Google Patents
A kind of electrical fuse of multiple transmission modes Download PDFInfo
- Publication number
- CN110380381A CN110380381A CN201910736549.XA CN201910736549A CN110380381A CN 110380381 A CN110380381 A CN 110380381A CN 201910736549 A CN201910736549 A CN 201910736549A CN 110380381 A CN110380381 A CN 110380381A
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- electrical fuse
- transmission modes
- multiple transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 230000008054 signal transmission Effects 0.000 claims abstract description 14
- 238000002955 isolation Methods 0.000 claims description 40
- 238000012545 processing Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 230000005669 field effect Effects 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 9
- 229910044991 metal oxide Inorganic materials 0.000 description 7
- 150000004706 metal oxides Chemical class 0.000 description 7
- 230000005611 electricity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
- H02H1/0069—Details of emergency protective circuit arrangements concerning transmission of signals by means of light or heat rays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/16—Modifications for eliminating interference voltages or currents
- H03K17/161—Modifications for eliminating interference voltages or currents in field-effect transistor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuses (AREA)
Abstract
The present invention provides a kind of electrical fuse of multiple transmission modes；Isolated location is used for the signal being isolated between the first power domain and second source domain；First connecting pin VIN, path unit, second connection end VOUT, current detecting unit are sequentially connected in series；The path unit is on or off-state, for controlling the on state of the first connecting pin VIN to second connection end VOUT.Benefit of the invention is that: electrical fuse can normally work in non-power supply state；Expand the application range of fuse, synchronous signal transmission mode multiplicity and high reliablity；Accurate to the status monitoring of fuse, protective capability is strong.
Description
Technical field
The present invention relates to electronic circuit fields, and in particular to a kind of electrical fuse of multiple transmission modes
Background technique
Fuse is in electric system for taking precautions against the electric installation of super-high-current.If being coupled to the negative of power electronics power supply unit
Carry and from electric supply draw super-high-current, then fuse the load and power electronics power supply unit can be made to disconnect to prevent
The only thus damage in electric system caused by super-high-current.Fuse generally comprises its physical size and is selected to limit current to
In the conductor of threshold value.In the case where electric current is more than this threshold value, conductor fusing is to prevent super-high-current from damaging electric system.
For existing fuse mostly using fever fusing principle, fusing body portion is the core of fuse, is fused by fuse-link
When play the role of cut off electric current, the melt processes of fuse are more demanding, and existing fuse response speed compared with
Slowly, blowout current size is difficult to control exact value.It scraps, secondary cannot use after existing blown fuse.
Fuse is gradually switched off device substitution.Breaker is a kind of electric switch being automatically brought into operation, and is designed to protect
Circuit is from the damage caused by overcurrent or overload or short circuit.In many applications, electronic switch can be used (for example, MOS
Transistor, IGBT etc.) Lai Shixian breaker to be to disconnect protected circuit and power supply in the case where overcurrent.Such electronics
Breaker can also be referred to as electrical fuse (electrical fuse e-fuse, intelligent fuse, electrical fuse etc.).
But existing electrical fuse has the following deficiencies:
The signal transmission unit mode of fuse is single, and reliability is low；
Electrical fuse is in normally off state, could work normally after needing to control power supply power supply (powering on)；
And inaccuracy simple to the status monitoring of fuse, causes protection inadequate；
Summary of the invention
To solve the above problems, the invention proposes a kind of electrical fuse of multiple transmission modes and its working methods.
According to the first aspect of the invention, the invention proposes a kind of electrical fuses of multiple transmission modes；Include:
First power domain, second source domain, the first connecting pin VIN, second connection end VOUT, isolated location, control and guarantor
Protect unit, path unit and current detecting unit；First power domain refers to the transmission of external signal and the work of isolated location
Make power domain；The second source domain is the working power domain of isolated location, control and protection unit；The isolated location is used for
The signal between the first power domain and second source domain is isolated；And signal is solved, decoding processing；The signal is outside
Signal and internal signal；
The isolated location is one-way or bi-directional transmission mode；
The first connecting pin VIN, path unit, second connection end VOUT, current detecting unit are sequentially connected in series；Institute
It states path unit to be on or off-state, for controlling the conducting of the first connecting pin VIN to second connection end VOUT
State；
The current detecting unit flows through the path unit electric current for detecting；The control and protection unit for pair
The state of the path unit is controlled；When the control and protection unit does not control the path unit, institute
It is in the conductive state to state path unit.
According to a preferred embodiment of the invention, the isolated location is light-coupled isolation.
According to a preferred embodiment of the invention, the isolated location is transformer isolation.
According to a preferred embodiment of the invention, the isolated location relay isolation.
According to a preferred embodiment of the invention, when the transformer isolation transmitted in both directions, pass through time-sharing multiplex
The transmission of form progress signal.
According to a preferred embodiment of the invention, when the transformer isolation transmitted in both directions, signal passes through multichannel
The transmission of transformer isolation form unit.
According to a preferred embodiment of the invention, when the light-coupled isolation transmitted in both directions, signal passes through at least two
Above and transmission direction it is opposite light-coupled isolation unit transmission.
According to a preferred embodiment of the invention, the opposite light-coupled isolation unit includes at least an outside
First light-coupled isolation unit of the signal to internal signal transmission；Second transmitted including at least an internal signal to external signal
Light-coupled isolation unit.
According to a preferred embodiment of the invention, the light-coupled isolation is light-coupled isolation chip.
According to a preferred embodiment of the invention, the path unit includes driving unit and power switch tube；It drives
Moving cell is used for driving power switching tube；The on state of power switch tube determines the on or off state of path unit.
According to a preferred embodiment of the invention, the first port of the driving unit connects control and protection list
Member, the third port by driving end, driving unit of the second port of driving unit connection power switch tube connect power switch
The output end and current detecting unit of pipe；The input of power switch tube terminates the first connecting pin VIN.
According to a preferred embodiment of the invention, the power switch tube is multiple arranged side by side group of sub- power switch tubes
At.
According to a preferred embodiment of the invention, the power switch tube is electric-controlled switch device.
According to a preferred embodiment of the invention, the power switch tube is technotron or metal oxide
Semiconductor field.
According to a preferred embodiment of the invention, the technotron is N-channel technotron or P ditch
Road technotron.
According to a preferred embodiment of the invention, the metal oxide semiconductor field effect tube is N-channel junction type
Field-effect tube or P-channel technotron.
According to a preferred embodiment of the invention, the metal oxide semiconductor field effect tube is reinforced insulation
Gate field-effect transistor or metal-oxide-semiconductor transistor.
According to a preferred embodiment of the invention, the metal oxide semiconductor field effect tube is P-channel junction type
When field-effect tube, i.e. PMOS tube；Power switch tube is the grid of power tube PMOS by driving end；The input terminal of power switch tube
For the drain electrode of power tube PMOS；The output end of power switch tube is the source electrode of power tube PMOS；
According to a preferred embodiment of the invention, driving unit is the switch controlled by control with protection location；It opens
The both ends of pass are respectively the second port and third port of driving unit.
According to a preferred embodiment of the invention, the current detecting unit realizes the function curve of I2t, with I2t
Curve carry out trigger protection.
According to a preferred embodiment of the invention, the current detecting unit is resistance.
According to a preferred embodiment of the invention, the current detecting unit is current transformer.
According to a preferred embodiment of the invention, the current transformer is hall device, TMR, fluxgate, Roche
One of coil.
The invention has the following advantages that
The electrical fuse of multiple transmission modes when not powering and (powering on) state can normally work, expand guarantor
The application range of dangerous silk；
The signal transmission form multiplicity of fuse, and the transmission of the different directions of multi-signal, high reliablity may be implemented.
Accurate to the status monitoring of fuse, protective capability is strong.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
The electrical fuse the general frame of Fig. 1 multiple transmission modes of the present invention.
Fig. 2 path unit embodiment of the present invention.
Fig. 3 external signal embodiment of the present invention.
One of Fig. 4 isolated location embodiment of the present invention.
The two of Fig. 5 isolated location embodiment of the present invention.
The three of Fig. 6 isolated location embodiment of the present invention.
The four of Fig. 7 isolated location embodiment of the present invention.
Figure label explanation:
The first power domain of 1-, 2- second source domain, 11- isolated location, 12- control and protection unit, 13- path unit,
14- current detecting unit, 111- input coil, 112- output winding, 113- photophore, 114- light-receiving device, 137- driving unit,
138- power switch tube；
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
The present invention is made further to illustrate in detail, completely below with reference to examples and drawings.
Basic knowledge introduction:
For fuse, melting heat energy value (I2T), this is the parameter of a fuse.By short time adiabatic approximation, phase
I squares of the electric current answered multiplies fusing time T and obtains.Melt the fuse-link of fuse, required for the cutting electric current of part vaporization
Nominal energy value, i.e. minimum thermal energy value needed for blown fuse.It is a constant for each different fuse, is
What the material and specification of fuse itself were determined.I2t facilitates the selection of fuse.
" fusing integral (Melting Integral): the fusing integral of fuse is the fuse member of this fuse of fusing
Energy needed for part, also referred to as fusing value I2t.Structure, material and the cross-sectional area of fuse element determine this value.It is each
Serial fuse has used different material and element configuration according to load current value difference, it is thus determined that every fuse
I2t is very necessary.Usually in DC circuit, using 10 times of rated current as fault current, make fuse extremely short
It is disconnected in time, point-device I2t " is measured by high speed oscilloscope and integrator.
The electrical fuse of multiple transmission modes of the present invention is combined with high voltage, low-impedance power switch tube and electric current
The function of detecting, and the state of the electrical fuse of multiple transmission modes can be monitored in real time.Its design is dissipated the smallest
It is operated under hot device.That is power switch tube impedance very little in the present invention, even high current, also very little of generating heat, what is needed dissipates
Hot device is small.
As shown in the electrical fuse the general frame of Fig. 1 multiple transmission modes of the present invention, the electrical fuse of multiple transmission modes
Including the first power domain 1, second source domain 2, the first connecting pin VIN, second connection end VOUT, isolated location 11, control and protect
Protect unit 12, path unit 13 and current detecting unit 14.
Here power domain refers to being worked under certain supply voltage in whole or in part of correlation module in fuse.It needs
What is illustrated be supply voltage here not only include power supply further include power supply ground；Power supply it is not necessarily 0V electricity
Pressure；It is also possible to positive voltage or negative voltage；It is low only with respect to the voltage value of power supply.Such as in common circuit
In have the power supply of analog circuit and the ground of analog circuit；The power supply of digital circuit and the ground of digital circuit.
The power supply of the first power domain 1 and power supply ground are respectively first voltage, the first ground in the present invention；Second source
The power supply and power supply ground in domain 2 are respectively second voltage, second connection end VOUT；
The transmission of external signal and the work of isolated location 11 are in the first power domain 1；Isolated location 11, control and protection list
12 work of member is in second source domain 2；Isolated location 11 is used for the signal being isolated between the first power domain 1 and second source domain 2；
Isolated location 11 is exactly the signal in order to be isolated between different electrical power domain in fact, to avoid because of signal between different electrical power domain
Working power voltage is different and signal is caused to transmit mistake, and the circuit function even resulted in different electrical power domain is abnormal.
Isolated location 11 by the signal to different electrical power domain and solved, decoded (or being known as modulation, demodulation) processing
Carry out the isolation transmission of signal between different electrical power domain.And signal mentioned herein can be divided into external signal and internal signal；
Be external signal be the first power domain 1 under signal；Inside letter is the signal under second source domain 2.
External signal is the electrical fuse and the external signal for interacting control of multiple transmission modes.Internal signal work
Inside the electrical fuse of multiple transmission modes, be relative to external signal through isolated location 11 be isolated in second source domain 2
The signal of lower work.
First connecting pin VIN, path unit 13, second connection end VOUT and current detecting unit 14 are sequentially connected in series.
Under different conditions, path unit 13 is on or off-state.What needs to be explained here is that aforementioned first be sequentially connected in series connects
It connects end VIN, path unit 13, second connection end VOUT and current detecting unit 14 and is similar to traditional fusing function.
When path unit 13 is in the conductive state, the first connecting pin VIN to second connection end VOUT forms access, is in
(or the referred to as access) state of conducting；
When path unit 13 is in an off state, the first connecting pin VIN to second connection end VOUT formed open circuit (or
For open circuit), be in an off state.
When path unit 13 is in the conductive state, the first connecting pin VIN to second connection end VOUT forms access, and electric current is just
This access can be flowed through.Current detecting unit 14 is for detecting the size of current for flowing through path unit.
According to the size for flowing through circuit, current detecting unit 14 will issue signal to control and protection unit 12, meanwhile,
Current detecting unit 14 realizes the function curve of I2t, carrys out trigger protection with the curve of I2t.Further current detecting unit 14
The function curve that I2t is realized by fitting, can also also realize the function curve of I2t by other means.Such protection side
Formula is safer more more acurrate than what traditional fuse came, it can be set according to different products different overcurrent multiple and
The overcurrent time.
Current detecting unit 14 can realize with resistance, be also possible to current transformer, such as Hall, TMR, fluxgate,
The current transformers such as Rogowski coil.,
When the first power domain 1 and second source domain 2 are not powered on and (powered), path unit 13 is in the conductive state；
After the first power domain 1 and second source domain 2 power on, path unit 13 is on or off-state is by control and protection list
Member control determines.
After the first power domain 1 and second source domain 2 normally power on, if the electric current for flowing through path unit 13 is more than pre-
Fixed value, current detecting unit 14 send a signal to control and protection unit 12；Control and protection unit 12 is in combination with outside
The state control access unit 13 of signal becomes off-state.
, whereas if the first power domain 1 and second source domain 2 do not power on normally, even if flowing through the electricity of path unit 13
Stream be more than scheduled value, control and protection unit 12 will not control access unit 13 which kind of state be in.
When external signal provides the order of shutdown, become internal signal after handling by isolated location 11.Internal signal
It is in an off state by 12 control access unit 13 of control and protection unit；Conversely, when external signal provides the order of conducting
When, path unit 13 is in the conductive state.
Path unit 13 includes driving unit 137 and power switch tube 138；Driving unit is used for driving power switching tube；
The on state of power switch tube determines the on or off state of path unit.
Driving unit 137 has 3 ports；First port is passed through by 131 connection control and protection units, second port
132 connection power switch tubes 138 (here for ease of description, are illustrated in figure with power MOS pipe, i.e. connection MOS by driving end
Grid), third port by 133 connection power switch tubes 138 output ends (that is: the source level of power MOS pipe in figure) and electricity
Flow detection unit；The input terminal (i.e. the drain electrode of power MOS pipe in figure) of power switch tube 138 passes through 134 the first connecting pins of connection
VIN.What needs to be explained here is that power MOS here is a kind of preferred schematic form of power switch tube.Here 131-
134 be the definition of the different names carried out to distinguish different connecting lines.In order to facilitate signal, driving unit 137 and function
The port name of rate switching tube 138, can be clearly from figure according to different connecting line 131-134 there is no drawn in the figure
In obtain.
It is necessary to be noted that the driving unit 137 especially therein of path unit 13 also needs in some cases
Connect the second voltage in second source domain 12.
In order to make power switch tube impedance very little.Power switch tube described here is arranged side by side group of multiple power switch pipes
At.Accordingly even when be high current, also very little of generating heat.
Power switch tube 138 in special path unit can be with are as follows: technotron (Junction FET-JFET)
With metal oxide semiconductor field effect tube (metal-oxide semiconductor FET, abbreviation MOS-FET).
Meanwhile the electric-controlled switch device such as power switch tube 138 or brilliant valve pipe, silicon-controlled, relay, contactor.
Which kind of form is power switch tube specifically use selected according to actual needs.
It can also be N-channel technotron and P-channel technotron for technotron；
Metal oxide semiconductor field effect tube or N-channel technotron and P-channel junction type field are imitated
Ying Guan；It can also be simultaneously reinforced insulation gate field-effect transistor, metal-oxide-semiconductor transistor.
As long as above-mentioned power switch tube 138 carries out realizing different on or off states i.e. under corresponding working condition
It can.
Such as: it from the main distinction of N-type power MOS pipe is that threshold voltage is different for N-type JFET, the threshold voltage of JFET
It is negative value, power NMOS tube is positive value, so the grid voltage of JFET and source voltage turn on when short circuit.That is JFET
Need 0V voltage that can be connected；JFET need negative pressure (such as: -15V) can turn off.
And power NMOS tube needs a positive voltage, so power MOS pipe needs 0V voltage that can turn off；Power NMOS
Pipe need positive pressure (such as: 10V), so that it may be connected.
The main function of driving unit 137 is exactly to realize the above-mentioned effect for making power switch tube 138 carry out on or off.
As shown in Fig. 2 path unit embodiment of the present invention, power switch tube 138 here is power tube PMOS.Driving is single
The work functions of member 137 can be briefly described are as follows: be passed through the switch of 131 controls with protection location 12 by control.
The both ends of switch are respectively the second port of driving unit 137 and the third port of driving unit 137；I.e. driving is single
The grid (being driven end grade of power tube PMOS) that the second port of member 137 passes through 132 connection power tube PMOSs；That is driving unit
The drain electrode (output end of power tube PMOS) that 137 third port passes through 133 connection power tube PMOSs.
Under normal conditions, it if the first power domain 1 and second source domain 2 do not power on normally, closes the switch, driving unit
137 second port and third port is shorted, i.e., it (is power tube PMOS that the grid of power tube PMOS and drain electrode are shorted at this time
Diode connection type).In this case, because the threshold voltage of power tube PMOS is less than or equal to 0V；Therefore power P MOS
It manages in the conductive state.
After the first power domain 1 and second source domain 12 normally power on, if the electric current for flowing through path unit 13 is more than
Scheduled value, current detecting unit 14 send a signal to control and protection unit 12；Control and protection unit 12 is in combination with outer
The state control switch of portion's signal is in an off state, and the grid of power tube PMOS and drain electrode disconnect at this time, and power tube PMOS is just
It is in an off state.
There can be other implementations for external signal, for the ease of introducing description explanation, in external signal embodiment
Attached drawing in, only relevant to the external signal unit of signal, other non-schematical sections and Fig. 1 multiple transmission modes of the present invention in figure
It is similar in electrical fuse the general frame.
As shown in Fig. 3 external signal embodiment of the present invention, external signal (to control signal hint in figure) inputs to isolation
Unit 11 controls the state (being turned on or off) that signal is used for control access unit 13 here.
It is necessary to be noted that control signal can be level signal, such as control signal is the first level signal
When (such as are as follows: high level or low level), after handling by isolated location 11, be converted to internal signal；Internal signal passes through control
System keeps path unit 13 in the conductive state with protection location 12；Conversely, (with front the when control signal is second electrical level signal
Two level signals are on the contrary, for example are as follows: low level or high level), path unit 13 is in an off state.
With greater need for special instruction, in certain fields, such as the even aviation of certain industrial circles such as Electric control
In the application of aerospace rank, very high to reliability requirement, level controling signal deficiency may be because the originals such as noise, shake, interference
Because of the state of the electrical fuse of control multiple transmission modes that cannot be stable.
Therefore (outside) signal here can be arranged to pulse signal.When specific works: control signal is the first pulse
When signal (such as are as follows: the high level pulse or low level pulse of certain time, it may be assumed that the signal of certain pulse width).It is logical
After crossing the single 11 yuan of processing of isolation, internal signal is converted to；Internal signal is made at path unit 13 by control and protection unit 12
In on state；Conversely, (with front second electrical level signal on the contrary, for example are as follows: low level when control signal is the second pulse signal
Pulse or high level pulse), path unit 13 is in an off state.
It can be diversified forms for the isolated location in the present invention.No matter it should be noted which kind of form, isolation is single
Member needs to meet the transfer function of external signal in the different embodiment of aforementioned external signal of the present invention.
As shown in one of Fig. 4 isolated location embodiment of the present invention；It here is the form of transformer isolation.Including input
Coil 111 and output winding 112；The both ends of input coil 111 connect input signal and input signal-ground respectively；Output winding 112
Both ends connect output signal and output signal-ground respectively.It also should be noted that only illustrating transformer isolation here
Principle, in practice further include corresponding modulator and demodulator, there is no illustrate in figure.Simultaneously as being principle signal, figure
In also the first power domain appeared in the electrical fuse the general frame not comprising illustrating multiple transmission modes of the present invention and the
The relevant supply voltage of two power domains and ground situation.
As shown in the two of Fig. 5 isolated location embodiment of the present invention；It here is the form of light-coupled isolation.Including photophore
113 and light-receiving device 114；The both ends of photophore 113 connect input signal and input signal-ground respectively；Distinguish at the both ends of light-receiving device 114
Even output signal and output signal-ground.It also should be noted that only illustrating the principle of light-coupled isolation here, in practice
Further include corresponding optocoupler driving circuit and optocoupler output circuit, does not illustrate in figure.Simultaneously as being principle signal, figure
In also the first power domain appeared in the electrical fuse the general frame not comprising illustrating multiple transmission modes of the present invention and the
The relevant supply voltage of two power domains and ground situation.
It is above-mentioned only to illustrate the form for being input to output of individual signals for isolated location.In practice for this hair
It is bright to can be from external signal to internal signal or from internal signal to external signal, it also may include the biography of multiple signals
It is defeated.I.e. according to the different embodiments of said external signal, they can have multiple and different signal transmission, and may be implemented unidirectional
It transmits (external signal is to internal signal or from internal signal to external signal), transmitted in both directions (external signal also may be implemented
To internal signal while from internal signal to external signal), only the difference of input/output signal is different with direction.
For signal transmitted in both directions above-mentioned, introduced by following specific embodiments.
As shown in the three of Fig. 6 isolated location embodiment of the present invention；It here is the form of transformer isolation.Because transformer
Input, output can be with transmitted in both directions, so transmitted in both directions (input/output) signal can pass through unlike with Fig. 4 here
One transformer isolation is transmitted.Certainly, needing exist for special emphasis is, in the input or output for carrying out external signal
When, it needs to carry out the transmission of signal by way of time-sharing multiplex.If other implementations of the invention are needed while being carried out double
To transmission, time-sharing multiplex form here at this moment cannot be used, it should need the transformer isolation form unit of multichannel could be real
It is existing.
As shown in the four of Fig. 7 isolated location embodiment of the present invention；Similar with Fig. 5 be the form of light-coupled isolation here.Because
Light-coupled isolation unit is only used for one-way transmission, so just needing here if necessary to carry out transmitted in both directions (input/output) signal
Want light-coupled isolation unit at least two and that transmission direction is opposite.It such as include being passed by external signal to internal signal in figure
Defeated light-coupled isolation unit (A unit), including photophore 113A and light-receiving device 114A；Including being passed by internal signal to external signal
Defeated (unit B), including photophore 113B and light-receiving device 114B.They are respectively the signal transmission of different directions.It needs exist for
Illustrate be different from Fig. 6 embodiment three in can only time-sharing multiplex transmission signal because containing two opposite directions here
Light-coupled isolation unit, so they can be with simultaneous transmission of signals.Certainly, in practice in order to which the needs for meeting signal transmission can be with
For the light-coupled isolation unit of multichannel different directions.
What needs to be explained here is that in addition to isolated location is in addition to above-mentioned form signal biography can also be carried out using relay
It is defeated.The direction that signal transmission is needed to pay attention to when signal transmission is carried out using relay, while how many according to the number of transmission signal,
Direction difference etc. needs to carry out different option and installments.
Above-mentioned implementation is under the conditions of current technology, if same can pass through chip list using the form of optocoupler
Member is realized.By other means because having coil, realized by chip unit relatively difficult.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of electrical fuse of multiple transmission modes；Include:
First power domain, second source domain, the first connecting pin VIN, second connection end VOUT, isolated location, control and protection list
Member, path unit and current detecting unit；
The isolated location is used for the signal being isolated between the first power domain and second source domain；And signal is solved, is translated
Code processing；The signal is external signal and internal signal；
The isolated location is one-way or bi-directional transmission mode；
The first connecting pin VIN, path unit, second connection end VOUT, current detecting unit are sequentially connected in series；It is described logical
Road unit is on or off-state, for controlling the on state of the first connecting pin VIN to second connection end VOUT；
The current detecting unit flows through the path unit electric current for detecting；
The control and protection unit is for controlling the state of the path unit.
2. the electrical fuse of multiple transmission modes as described in claim 1, it is characterised in that: the control and protection unit does not have
Have that when controlling the path unit, the path unit is in the conductive state.
3. the electrical fuse of multiple transmission modes as claimed in claim 2, it is characterised in that: the isolated location be optocoupler every
From.
4. the electrical fuse of multiple transmission modes as claimed in claim 2, it is characterised in that: the isolated location is transformer
Isolation.
5. the electrical fuse of multiple transmission modes as claimed in claim 2, it is characterised in that: the isolated location relay every
From.
6. the electrical fuse of multiple transmission modes as claimed in claim 4, it is characterised in that: the two-way biography of transformer isolation
When defeated, the transmission of signal is carried out by way of time-sharing multiplex.
7. the electrical fuse of multiple transmission modes as claimed in claim 4, it is characterised in that: the two-way biography of transformer isolation
When defeated, signal is transmitted by the transformer isolation form unit of multichannel.
8. the electrical fuse of multiple transmission modes as claimed in claim 3, it is characterised in that: the light-coupled isolation transmitted in both directions
When, signal is transmitted by least two and opposite transmission direction light-coupled isolation unit.
9. the electrical fuse of multiple transmission modes as claimed in claim 7, it is characterised in that: the opposite light-coupled isolation list
Member, including at least the first light-coupled isolation unit of an external signal to internal signal transmission；Including at least an internal signal
The the second light-coupled isolation unit transmitted to external signal.
10. the electrical fuse of the multiple transmission modes as described in claim 3,8-9 are any, it is characterised in that: the optocoupler every
From for light-coupled isolation chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736549.XA CN110380381A (en) | 2019-08-09 | 2019-08-09 | A kind of electrical fuse of multiple transmission modes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736549.XA CN110380381A (en) | 2019-08-09 | 2019-08-09 | A kind of electrical fuse of multiple transmission modes |
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| CN110380381A true CN110380381A (en) | 2019-10-25 |
Family
ID=68258933
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910736549.XA Pending CN110380381A (en) | 2019-08-09 | 2019-08-09 | A kind of electrical fuse of multiple transmission modes |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1481615A (en) * | 2000-12-13 | 2004-03-10 | 西门子公司 | Electronic switch device |
| TWI224869B (en) * | 2004-03-25 | 2004-12-01 | Richtek Techohnology Corp | Apparatus for driving depletion type junction field effect transistor |
| CN202004738U (en) * | 2011-03-29 | 2011-10-05 | 武汉万鹏科技有限公司 | Electronic safety switch controlled by MOS (metal oxide semiconductor) tube |
| CN103094875A (en) * | 2012-12-26 | 2013-05-08 | 中国航天时代电子公司 | Solid state power controller based on microcontroller |
| CN107317314A (en) * | 2017-08-15 | 2017-11-03 | 中国航天时代电子公司 | A kind of solid-state power controller with current-limiting protection and inverse time-lag protection function |
| CN209134044U (en) * | 2018-10-26 | 2019-07-19 | 潍坊歌尔电子有限公司 | A kind of short-circuit protection circuit and electronic product |
| CN210629076U (en) * | 2019-08-09 | 2020-05-26 | 无锡启腾电子科技有限公司 | Electronic fuse with multiple transmission modes |
-
2019
- 2019-08-09 CN CN201910736549.XA patent/CN110380381A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1481615A (en) * | 2000-12-13 | 2004-03-10 | 西门子公司 | Electronic switch device |
| TWI224869B (en) * | 2004-03-25 | 2004-12-01 | Richtek Techohnology Corp | Apparatus for driving depletion type junction field effect transistor |
| CN202004738U (en) * | 2011-03-29 | 2011-10-05 | 武汉万鹏科技有限公司 | Electronic safety switch controlled by MOS (metal oxide semiconductor) tube |
| CN103094875A (en) * | 2012-12-26 | 2013-05-08 | 中国航天时代电子公司 | Solid state power controller based on microcontroller |
| CN107317314A (en) * | 2017-08-15 | 2017-11-03 | 中国航天时代电子公司 | A kind of solid-state power controller with current-limiting protection and inverse time-lag protection function |
| CN209134044U (en) * | 2018-10-26 | 2019-07-19 | 潍坊歌尔电子有限公司 | A kind of short-circuit protection circuit and electronic product |
| CN210629076U (en) * | 2019-08-09 | 2020-05-26 | 无锡启腾电子科技有限公司 | Electronic fuse with multiple transmission modes |
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