CN207765953U - Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function - Google Patents
Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function Download PDFInfo
- Publication number
- CN207765953U CN207765953U CN201721716198.9U CN201721716198U CN207765953U CN 207765953 U CN207765953 U CN 207765953U CN 201721716198 U CN201721716198 U CN 201721716198U CN 207765953 U CN207765953 U CN 207765953U
- Authority
- CN
- China
- Prior art keywords
- circuit
- diode
- static electrification
- safeguard function
- electrostatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 46
- 230000005611 electricity Effects 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 33
- 230000015556 catabolic process Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Semiconductor Integrated Circuits (AREA)
Abstract
The utility model discloses a kind of circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function, and the circuit of the static electrification safeguard function includes input terminal, power end and output end；The element of releasing of the first of the electrostatic discharge protection circuit is series between the power end and signal input part, and the second element of releasing is series between the input terminal and the ground terminal, and the clamp members are series between signal input part and the ground terminal；When electrostatic occurs for the power end, described first releases element conductive, and forms the first leakage path between power end and ground terminal clamp members；When electrostatic occurs for input terminal, described second releases element conductive, and the input terminal is formed to the second leakage path between the ground terminal, avoid the impact that electrostatic treats protection circuit, reduction waits for that the possibility of LATCH UP (latch-up) phenomenon occurs for protection circuit, this programme will not increase the area of integrated circuit, advantageously reduce the cost of integrated circuit.
Description
Technical field
The utility model is related to high voltage integrated circuit field, more particularly to a kind of circuit of static electrification safeguard function, high pressure
Integrated circuit and air conditioner.
Background technology
High voltage integrated circuit is a kind of gate driving circuit with the functions such as under-voltage protection, logic control, it is by electric power
Electronics is combined with semiconductor technology, gradually replaces traditional discrete component, is used in IGBT, high-power more and more
The drive area of MOSFET.Static discharge (ESD) phenomenon is the most important integrity problem for causing IC products to fail
One of.Related research shows that the 30% of ic failure product is all caused by by static discharge phenomenon.
Durings the manufacture of IC chip, encapsulation, test, transport etc., different degrees of electrostatic discharge event can all occur.
Integrated circuit will produce the equivalent high pressure of hundreds if not thousands of volts when discharging, this can puncture the gate oxidation of input stage in integrated circuit
Layer, makes integrated circuit be damaged.In particular with scaled, the grid oxygen of input stage of transistor size in integrated circuit
It is more and more thinner to change layer thickness, is more prone to be damaged by the influence of exterior static charge.Therefore, improve integrated circuit to electrostatic
The reliability of electric discharge protection, is the important link that must take into consideration when high voltage integrated circuit designs.
Most current high-pressure electrostatic protective device, which is difficult to meet power chip, wants many of high-pressure electrostatic protectiving scheme
It asks：Should such as there be the maintenance voltage higher than operating voltage, have the trigger voltage for being less than gate oxide breakdown voltage as possible again, simultaneously also
Can be by the respective standard of ESD protection.(as high in the environment of being often operated in due to many power integrated circuits and compare " severe "
Voltage, high current, strong electromagnetic, frequently plug and high/low temperature working environment etc.), make their Electrostatic Protection Design need to examine
Consider more multifactor.At present in the high voltage integrated circuit chip of mainstream electrostatic protection structure as shown in Figure 1, wherein VH1, VH2 be height
Pressure side, VL1, VL2 are low-pressure end.The safeguard structure includes the general-purpose diode of input terminal.It is to be simply input that it, which protects mechanism,
Output diode is protected, and the circuit structure impact resistance is limited, cannot be satisfied existing high voltage integrated circuit to electrostatic protection
It is required that and occupying larger chip area.
Utility model content
The main purpose of the utility model is to propose a kind of circuit, high voltage integrated circuit and the sky of static electrification safeguard function
Adjust device, it is intended to improve protective capacities of the high voltage integrated circuit to electrostatic.
To achieve the above object, the utility model proposes a kind of static electrification safeguard function circuit, the static electrification is anti-
The circuit of protective function includes input terminal, power end, ground terminal and output end；
Wait for protection circuit, it is described to wait for that protection circuit has signal input part, signal output end, the signal input part and institute
State the input terminal connection of the circuit of static electrification safeguard function；
Electrostatic discharge protection circuit, including first release element, second release element, clamp members；Described first releases element
It is series between the power end and signal input part, the described second element of releasing is series at the input terminal and the ground terminal
Between, the clamp members are series between signal input part and the ground terminal；
When electrostatic occurs for the power end, described first releases element conductive, and forms power supply with the clamp members
The first leakage path between end and ground terminal；When electrostatic occurs for the input terminal, described second releases element conductive, and shape
At the input terminal to the second leakage path between the ground terminal.
Preferably, described first element is released as diode of releasing, the anode and signal input part of the diode of releasing
Connection, the cathode of the diode of releasing are connect with the power end.
Preferably, the diode of releasing has multiple, and multiple diodes of releasing are sequentially connected in series, and conducting direction
It is identical.
Preferably, the described second element of releasing is NPN type triode, the base stage of the NPN type triode and the signal
Input terminal connects, and the emitter ground connection of the NPN type triode, the collector of the NPN type triode connects with the input terminal
It connects.
Preferably, the clamp members are clamp resistance, the base of one end of the clamp resistance and the NPN type triode
Pole connects, the other end ground connection of the clamp resistance.
Preferably, the clamp members are zener diode, and the plus earth of the zener diode, the voltage stabilizing two
The cathode of pole pipe is connect with the base stage of the NPN type triode.
Preferably, the zener diode has multiple, and multiple zener diodes are connected in series with, and conducting direction phase
Together.
Preferably, the electrostatic discharge protection circuit further includes output guard circuit, and the output guard circuit includes the three or two
Pole pipe, the 4th diode, the first reverser, the second phase inverter；
The input terminal of first reverser is connect with the signal output end, the output end of first reverser and
The input terminal of two phase inverters connects；The cathode of the output end of second reverser, the anode of third diode, the 4th diode
Connection, and the output end of the circuit for the static electrification safeguard function；
The cathode of the third diode is connect with the power end, anode and the ground terminal of the 4th diode
Connection.
The utility model also proposes that a kind of high voltage integrated circuit, the high voltage integrated circuit include at least one band
The circuit of antistatic protection function.
The utility model also proposes a kind of air conditioner, including the circuit of the static electrification safeguard function or the height
Press integrated circuit.
Technical solutions of the utility model by be rationally arranged first release element, second release element and clamp members
Connection structure, to form the leakage path between power end-ground terminal and between input terminal-ground, to occur in electrostatic
When, it is released to electrostatic induced current by the leakage path, avoids the impact that electrostatic treats protection circuit, reduce and wait protecting
The possibility of LATCH-UP (latch-up) phenomenon occurs for circuit, improves the antistatic capacity of integrated circuit.Further,
Compared with the existing technology, this programme reduces the use of diode, and protection electricity is formed using the triode and resistance of small volume
Road will not increase the area of integrated circuit, be conducive to drop to be conducive to the electrostatic discharge protection circuit applied in integrated circuit
The cost of low integrated circuit.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the circuit of static electrification safeguard function in the prior art；
Fig. 2 is the structural schematic diagram of the circuit of the static electrification safeguard function of the utility model.
Drawing reference numeral explanation：
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction be only used for explain it is opposite between each component under a certain particular pose (as shown in the picture)
Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.In addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, will be understood that this technical side when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of circuit and high voltage integrated circuit of static electrification safeguard function, the static electrification protection
The circuit of function can be the circuit being made of discrete component, can also be integrated circuit (chip)；Specific limit is not done herein
It is fixed.Referring to Fig. 2, the circuit of the static electrification safeguard function includes waiting for protection circuit 10 and for protecting this to wait for protection circuit
10 from electrostatic impact electrostatic discharge protection circuit 20.It is described to wait for that protection circuit 10 be functional circuitry, such as Schmitt electricity
Road；It is described to wait for that protection circuit Unit 10 is preferred when the circuit of the static electrification safeguard function is applied in high voltage integrated circuit
It includes the gate driving circuit with functions such as under-voltage protection, logic controls to be.
Specifically, the circuit of the static electrification safeguard function includes input terminal VIN, power end VCC, ground terminal and output
Hold VOUT；It is described to wait for that protection circuit 10 has signal input part INPUT, signal output end OUTPUT, the signal input part
INPUT is connect with the input terminal VIN of the circuit of the static electrification safeguard function.The electrostatic discharge protection circuit 20 is let out including first
It puts element D1, second release element Q1, clamp members R1；The described first element D1 that releases is series at the power end VCC and letter
Between number input terminal INPUT, the described second element Q1 that releases is series between input terminal VIN and ground, the clamp members R1 strings
It is coupled between signal input part INPUT and ground.
When electrostatic occurs for power end VCC, described first releases element D1 conductings, and forms electricity with the clamp members R1
The first leakage path between source VCC and ground terminal, the electrostatic induced current entered by power end VCC can be by the first leakage paths
It releases；When electrostatic occurs for the input terminal VIN, described second releases element Q1 conducting, and described second releases element
Q1 forms the input terminal VIN to the second leakage path between the ground terminal, and the electrostatic induced current entered by input terminal VIN can
To be released by the second leakage path, therefore, because the presence of the first leakage path and the second leakage path, occurs in electrostatic
When, the leakage path of electrostatic induced current can be provided, wait for that protection circuit 10 from electrostatic impact, has ensured and waited preventing to ensure that
The safety of protection circuit 10.
Technical solutions of the utility model by be rationally arranged first release element D1, second release element Q1 and clamper
The connection structure of element R1, to form the leakage path between power end VCC- ground terminals and between the ground input terminal VIN-,
To when electrostatic occurs, be released to electrostatic induced current by the leakage path, avoid electrostatic and treat protection circuit 10
Impact, reduce wait for protection circuit 10 occur LATCH-UP (latch-up) phenomenon possibility, improve the quiet of integrated circuit
Electric protective capacities.Further, compared with the existing technology, this programme reduces the use of diode, utilizes the three of small volume
Pole pipe and resistance form protection circuit, to be conducive to the electrostatic discharge protection circuit 20 applied in integrated circuit, will not increase
The area of integrated circuit advantageously reduces the cost of integrated circuit.
Described first release element D1 can be diode, triode, metal-oxide-semiconductor either silicon-controlled, the power end VCC
When electrostatic occurs, unexpected increased voltage/current makes described first to release element D1 conductings.Those skilled in the art can manage
Solution, when first release element D1 be above-mentioned different device when, circuit connecting mode is different.
In this programme embodiment, the described first element D1 that releases preferably releases diode, the sun of the diode of releasing
Pole is connect with signal input part INPUT, and the cathode of the diode of releasing is connect with power end VCC.In order to make described to release two
Pole pipe has faster response speed and absorbs more surge powers, it is preferred to use TVS diode, as transient state inhibit two
Pole pipe, when the both ends of TVS diode are subjected to the high energy impact events of moment, it can be with high speed the impedance value between both ends
Low ESR is become from high impedance, to absorb an instantaneous large-current, its both end voltage clamp down on one it is scheduled numerically,
To protect subsequent circuit element not impacted by high voltage transient spike.
Specifically, when described, the circuit with antistatic protection function works normally, the diode of releasing is in reversed
Cut-off state, to which first leakage path is off；At this point, the presence of the first leakage path have no effect on it is described
The normal work of circuit；And when there is electrostatic by power end VCC into fashionable, according to Principles of Transistors, larger electrostatic can cause to let out
It puts diode and avalanche breakdown occurs, even if electrostatic reaches circuit to be protected not yet, the diode hair of releasing will be caused
Raw breakdown, simultaneously because the presence of clamp members R1 so that the diode of releasing forms low-resistance with the clamp members R1
Access avoids circuit to be protected by electrostatic impact to which the introduced high current of electrostatic is released to ground terminal.The pincers
Bit unit R1 can be herein clamp resistance, can also be clamp diode.When the first leakage path is connected, the clamper member
The presence of part R1 so that wait for that the signal input part INPUT voltage-to-grounds of protection circuit 10 are in a lower value, to protect
The signal input part INPUT.
Further, in order to avoid slightly larger voltage/current causes the diode of releasing to mislead, therefore this programme
In, the diode of releasing, which can be arranged, to be had multiple, and multiple diodes of releasing are sequentially connected in series, and conducting direction phase
Together.By the way that the number of the diode of releasing rationally is arranged, on the one hand make all to release diode when electrostatic occurs, Neng Gouquan
Portion is connected, and to static electricity discharge electric current, achievees the purpose that protection；On the other hand it also avoids because of spread of voltage, causes to release two
The case where pole pipe misleads.
Need to illustrate herein when, the breakdown of diode is divided into electrical breakdown and thermal breakdown, electrical breakdown refer to avalanche breakdown and
Zener breakdown, this electrical breakdown are mainly that carrier impact electric power generates new electron-hole pair, so it is recoverable,
When puncturing electrical breakdown exactly occurs for the diode in this programme.
Described second releases element Q1 as switching tube, such as triode, metal-oxide-semiconductor；In this programme embodiment, this described the
The two element Q1 that release are to release triode, specially NPN type triode, and the base stage of the NPN type triode and the signal are defeated
Enter INPUT is held to connect, the emitter ground connection of the NPN type triode, the collector of the NPN type triode and the input terminal
VIN connections.The clamp members R1 is clamp resistance, and one end of the clamp resistance and the base stage of the triode of releasing connect
It connects, the other end ground connection of the clamp resistance.
When electrostatic by input terminal VIN into fashionable, according to Principles of Transistors, larger electrostatic can cause the NPN triode
Puncture, to which electrostatic flows into clamp resistance by the collector and base stage of NPN type triode, further, due to the pincers
Position resistor coupled in parallel is between the base stage and emitter of NPN type triode, therefore, because having pressure drop on clamp resistance so that NPN
Type triode ON, the electrostatic induced current are directly released by NPN type triode, to protect wait for protection circuit 10 from
Electrostatic impact.
Clamp members R1 in this programme is preferably clamp resistance, on the one hand the clamp resistance can reduce electrostatic electricity
Stream, can also coordinate NPN type triode to work, so that three pole of the NPN type with the voltage of stabilization signal input terminal INPUT
Pipe forms the second leakage path；The clamp resistance can also be zener diode, specifically, the anode of the zener diode
Ground connection, the base stage that the cathode of the zener diode releases element Q1 with described second are connect.Further, described in order to adjust
The clamp voltage of clamp members R1, the zener diode, which can be arranged, to be had multiple, and multiple zener diodes are connected in series with,
And conducting direction is identical.
In order to avoid signal output end OUTPUT is by electrostatic impact, therefore, in the present solution, the electrostatic protection electricity is arranged
Road 20 further includes output guard circuit 30, and the output guard circuit 30 includes third diode D3, the 4th diode D4, first
Reverser DN1, the second phase inverter DN2；The input terminal VIN of the first reverser DN1 and the signal output for waiting for protection circuit 10
OUTPUT connections, the output end of the first reverser DN1 is held to be connect with the input terminal of the second phase inverter DN2；Described second is anti-
It is connected to the cathode of the output end of device, the anode of third diode D3, the 4th diode D4, and is the static electrification safeguard function
Circuit output end；The cathode of the third diode D3 is connect with power end VCC, the anode of the 4th diode D4
Ground connection.
When electrostatic enters the output guard circuit 30 by output end VOUT, a part of electrostatic passes through third diode D3
It is released to power end VCC, another part electrostatic is released to ground terminal by the 4th diode D4；To avoid electrostatic induced current from entering
To waiting in protection circuit 10.The setting of two concatenated phase inverters, on the one hand so that waiting for that protection circuit Unit 10 is exported to next
The useful signal of grade circuit remains unchanged, on the other hand when next stage circuit treats the output end VOUT hairs of protection circuit Unit 10
When raw reverse surge impact, by the collective effect of the first phase inverter, the second phase inverter DN2, isolation next stage circuit is treated anti-
The surge impact of protection circuit Unit 10 reduces the possibility for waiting for that protection circuit Unit 10 is destroyed by subordinate's circuit surge impact
Property.
The utility model also proposes a kind of high voltage integrated circuit, which includes that the static electrification protects work(
The circuit of energy, the concrete structure of the circuit of the static electrification safeguard function is with reference to above-described embodiment, due to the high voltage integrated circuit
Use whole technical solutions of above-mentioned all embodiments, therefore at least institute caused by the technical solution with above-described embodiment
There is advantageous effect, this is no longer going to repeat them.The high voltage integrated circuit may include multiple static electrification safeguard functions
Circuit, the circuit of multiple static electrification safeguard functions can also be the static electrification safeguard function can cascade successively
Circuit and other functions integrated circuit serial or parallel connection.Due to the input of the circuit of the static electrification safeguard function in this programme
End VIN and output end VOUT all has the function of electrostatic protection, therefore when the generation of the circuit of the static electrification safeguard function is irreversible
Electrostatic breakdown when, can to next stage circuit formed electrostatic protection；Meanwhile when the reverse surge impact by lower secondary, by
In the presence of output guard circuit 30, protection can be generated to this grade of circuit.Therefore this programme can protect from it is external or other
Electrostatic caused by circuit is to the influence for waiting for protection circuit 10, to improve the electrostatic protection energy of integral high pressure integrated circuit
Power.
The utility model also proposes a kind of air conditioner, which includes the circuit of the static electrification safeguard function, and/
Or the high voltage integrated circuit.The circuit of the static electrification safeguard function and the concrete structure of high voltage integrated circuit are with reference to above-mentioned reality
Example is applied, since the air conditioner uses whole technical solutions of above-mentioned all embodiments, at least there is above-described embodiment
Technical solution caused by all advantageous effects, this is no longer going to repeat them.The circuit of the static electrification safeguard function,
And/or the high voltage integrated circuit can be used for the master control borad, display board and other function circuit boards of the air conditioner,
This is not specifically limited；The air conditioner can be air-conditining, cabinet air-conditioner etc..Due to the electricity of the static electrification safeguard function
Road and/or the high voltage integrated circuit can improve the antistatic capacity of circuit board, it is thus possible to improve the air conditioner
The safety of operation.
The above is only the preferred embodiment of the present invention, and it does not limit the scope of the patent of the present invention,
It is every under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (10)
1. a kind of circuit of static electrification safeguard function, which is characterized in that the circuit of the static electrification safeguard function include input terminal,
Power end, ground terminal and output end；
Wait for protection circuit, it is described to wait for that protection circuit has signal input part, signal output end, the signal input part and the band
The input terminal of the circuit of antistatic protection function connects；
Electrostatic discharge protection circuit, including first release element, second release element, clamp members；Described first release element series connection
Between the power end and signal input part, described second release element be series at the input terminal and the ground terminal it
Between, the clamp members are series between signal input part and the ground terminal；
When electrostatic occurs for the power end, described first releases element conductive, and with the clamp members formed power end with
The first leakage path between ground terminal；When electrostatic occurs for the input terminal, described second releases element conductive, and forms institute
Input terminal is stated to the second leakage path between the ground terminal.
2. the circuit of static electrification safeguard function as described in claim 1, which is characterized in that described first releases element to release
The anode of diode, the diode of releasing is connect with signal input part, cathode and the power end of the diode of releasing
Connection.
3. the circuit of static electrification safeguard function as claimed in claim 2, which is characterized in that the diode of releasing have it is multiple,
Multiple diodes of releasing are sequentially connected in series, and conducting direction is identical.
4. the circuit of static electrification safeguard function as described in claim 1, which is characterized in that described second releases element as NPN
Type triode, the base stage of the NPN type triode are connect with the signal input part, and the emitter of the NPN type triode connects
Ground, the collector of the NPN type triode are connect with the input terminal.
5. the circuit of static electrification safeguard function as claimed in claim 4, which is characterized in that the clamp members are clamper electricity
Resistance, one end of the clamp resistance are connect with the base stage of the NPN type triode, the other end ground connection of the clamp resistance.
6. the circuit of static electrification safeguard function as claimed in claim 4, which is characterized in that the clamp members are two pole of voltage stabilizing
Pipe, and the plus earth of the zener diode, the cathode of the zener diode and the base stage of the NPN type triode connect
It connects.
7. the circuit of static electrification safeguard function as claimed in claim 6, which is characterized in that the zener diode have it is multiple,
Multiple zener diodes are connected in series with, and conducting direction is identical.
8. the circuit of the static electrification safeguard function as described in claim 1 to 7 any one, which is characterized in that the electrostatic is anti-
Protection circuit further includes output guard circuit, and the output guard circuit includes third diode, the 4th diode, first reversed
Device, the second phase inverter；
The input terminal of first reverser is connect with the signal output end, and the output end of first reverser and second is instead
The input terminal of phase device connects；The output end of second reverser and the anode of third diode and the cathode of the 4th diode
Interconnection, and the output end for the circuit that the output end of second reverser is the static electrification safeguard function；
The cathode of the third diode is connect with the power end, and anode and the ground terminal of the 4th diode connect
It connects.
9. a kind of high voltage integrated circuit, which is characterized in that including at least one band as described in claim 1 to 8 any one
The circuit of antistatic protection function.
10. a kind of air conditioner, which is characterized in that including the static electrification safeguard function as described in claim 1 to 8 any one
Circuit or high voltage integrated circuit as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721716198.9U CN207765953U (en) | 2017-12-08 | 2017-12-08 | Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721716198.9U CN207765953U (en) | 2017-12-08 | 2017-12-08 | Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207765953U true CN207765953U (en) | 2018-08-24 |
Family
ID=63189859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721716198.9U Expired - Fee Related CN207765953U (en) | 2017-12-08 | 2017-12-08 | Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207765953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289606A (en) * | 2019-07-29 | 2019-09-27 | 南京市特种设备安全监督检验研究院 | A kind of ESD protection circuit of elevator door-motor |
-
2017
- 2017-12-08 CN CN201721716198.9U patent/CN207765953U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289606A (en) * | 2019-07-29 | 2019-09-27 | 南京市特种设备安全监督检验研究院 | A kind of ESD protection circuit of elevator door-motor |
| CN110289606B (en) * | 2019-07-29 | 2024-04-23 | 南京市特种设备安全监督检验研究院 | Electrostatic discharge protection circuit of elevator door machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207765952U (en) | Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function | |
| CN101626154B (en) | ESD full-chip protection circuit of integrated circuit | |
| CN102034811B (en) | Low-voltage SCR (Silicon Controlled Rectifier) structure for ESD (Electronic Static Discharge) protection of integrated circuit chip | |
| CN100481697C (en) | Cascoded rectifier | |
| CN103733336A (en) | Combination ESD protection circuits and methods | |
| CN108306273A (en) | Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function | |
| CN103427408B (en) | ESD protection for high voltage applications | |
| CN102738782A (en) | Esd protection circuit for semiconductor integrated circuit | |
| US20130003242A1 (en) | Transient voltage suppressor for multiple pin assignments | |
| CN207765950U (en) | Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function | |
| CN107731812A (en) | A kind of nested refers to bidirectional thyristor electrostatic protection device more | |
| CN101707363B (en) | Electrostatic damage protection circuit having real-time detection function, and control method thereof | |
| US20240088651A1 (en) | Failsafe Input/Output Electrostatic Discharge Protection With Diodes | |
| CN108630680A (en) | A kind of interdigital nesting hybrid structure electrostatic dispensing device based on SCR | |
| CN207765953U (en) | Circuit, high voltage integrated circuit and the air conditioner of static electrification safeguard function | |
| CN202652171U (en) | Reliable and sensitive IGBT current foldback circuit | |
| CN103646944A (en) | Double-mode electro-static discharge protection IO circuit | |
| CN103151769B (en) | Electrostatic discharge protection circuit and integrated circuit | |
| CN210838938U (en) | High-voltage integrated chip, intelligent power module and air conditioner | |
| CN101938118B (en) | Electrostatic discharge protection circuit with multi-power area integrated circuit | |
| CN110690692A (en) | High-voltage integrated chip, intelligent power module and air conditioner | |
| CN108109997A (en) | A kind of method that low pressure ESD protection performance is improved using trap cutting techniques | |
| CN208189589U (en) | A kind of high maintenance voltage NPNPN type bidirectional thyristor electrostatic protection device | |
| CN102270658B (en) | Low-trigger-voltage and low-parasitic-capacitance silicon controlled structure | |
| CN202888176U (en) | ESD device structure based on BCD technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 |