CN108777474A - Chip over-temperature protective device and method, terminal - Google Patents
Chip over-temperature protective device and method, terminal Download PDFInfo
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- CN108777474A CN108777474A CN201810642131.8A CN201810642131A CN108777474A CN 108777474 A CN108777474 A CN 108777474A CN 201810642131 A CN201810642131 A CN 201810642131A CN 108777474 A CN108777474 A CN 108777474A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
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- Semiconductor Integrated Circuits (AREA)
Abstract
Present disclose provides a kind of chip over-temperature protective device and method, terminal, it can solve the problems, such as that chip operating temperature is excessively high and damage is caused to chip.The wherein described chip over-temperature protective device includes：It is installed on the temperature detection part of chip surface, is used for the operating temperature of detection chip；Voltage supply port, for providing chip operation required voltage；The voltage controlling components being connected with temperature detection part and voltage supply port, voltage controlling components are also connected with chip, for judging whether the operating temperature for detecting obtained chip is qualified, and when the operating temperature for the chip that detection obtains is unqualified, cut off the access between voltage supply port and chip.Said chip over-temperature protection device is applied to the design phase of chip, can avoid the problem that the stage chips temperature is excessively high and generates damage.
Description
Technical field
This disclosure relates to display technology field more particularly to a kind of chip over-temperature protective device and method, terminal.
Background technology
In the exploitation design phase of IC chip (Integrated Circuit, IC) circuit, the work temperature of chip
Degree can constantly change with its operating status and run time.With integrated chip degree is higher and higher, function increasingly
Complexity, the operating temperature of chip influence it also to become increasing.For the chip of display screen, such as the work of fruit chip
Temperature is excessively high to be caused to damage to chip, and vertical line is will produce when degree of injury is lighter, blank screen, dodges the problems such as line, when serious
Chip can be caused to burn, or even cause fire.
Therefore, how to avoid chip operating temperature is excessively high from causing to damage to chip, be current urgent problem to be solved.
Invention content
The problem of in the presence of for the above-mentioned prior art, embodiment of the disclosure provide a kind of chip over-temperature protective device
And method, terminal, damage is caused to chip to solve the problems, such as that chip operating temperature is excessively high.
In order to achieve the above objectives, embodiment of the disclosure adopts the following technical scheme that：
In a first aspect, the embodiment of the present disclosure provides a kind of chip over-temperature protective device, the chip over-temperature protective device
Including：It is installed on the temperature detection part of chip surface, the operating temperature for detecting the chip；Voltage supply port is used
In the offer required voltage of chip operation；The voltage being connected with the temperature detection part and the voltage supply port
Control unit, the voltage controlling components are also connected with the chip, for judging that the operating temperature of chip that detection obtains is
No qualification, and when the operating temperature of chip that detection obtains is unqualified, cut off the voltage supply port and the chip it
Between access.
Said chip over-temperature protection device can be realized, in the operating temperature qualification of chip, i.e., not excess temperature when, cut off voltage
Access between supply port and chip stops providing the required voltage of work to chip, to make chip be stopped,
Efficiently avoid that chip operating temperature is excessively high to be caused to damage to chip.
Based on the above-mentioned technical proposal, optionally, the temperature detection part includes：It is installed on the warming of the chip surface
Different resistance values is presented in resistance at different temperatures；The sensor being connected with the warming resistance, for detecting the warming
The resistance value of resistance determines therefrom that the operating temperature of the chip, and identified operating temperature value is transferred to the voltage control
Component processed.
Optionally, the warming resistance is fixedly installed in the chip surface by insulating cement.
Optionally, the sensor base be fixed with adiabatic membrane, the sensor and the adiabatic membrane pass through insulate gluing
It is affixed on the chip surface.
Optionally, the voltage controlling components include trigger, and the trigger includes：With the temperature detection part phase
First input end even, the operating temperature for receiving the chip that detection obtains；Second to be connected with the voltage supply port
Input terminal, the required voltage of chip operation provided for receiving the voltage supply port；It is connected with the chip
First output end；The second output terminal of ground connection；The the first logic electricity being connected with the first input end and second input terminal
Road, for judging whether the operating temperature for detecting obtained chip exceeds set temperature threshold value, if so, with second output
Termination is logical, if it is not, then being connected with first output end.
Optionally, the trigger further includes the second logic circuit being connected with second input terminal, for judging
State whether the required voltage of chip operation that voltage supply port is provided exceeds setting operating voltage threshold value, if so, opening
The trigger is opened, if it is not, then closing the trigger.
Optionally, the chip over-temperature protective device further includes being connected to the voltage supply port to control with the voltage
Filter circuit between component, the required voltage of chip operation for being provided the voltage supply port are filtered
Wave keeps its waveform smooth.
Optionally, the filter circuit includes：Resistance, one end are connected with the voltage supply port, the other end and institute
Voltage controlling components are stated to be connected；Capacitance, one end are connected with the voltage controlling components, other end ground connection.
Optionally, the chip over-temperature protective device further includes the display being connected with the temperature detection part, is used for
The operating temperature for the chip that display detection obtains.
Second aspect, embodiment of the disclosure provide a kind of chip over-temperature guard method, the chip over-temperature protection side
Method includes：The operating temperature of detection chip；Judge whether the operating temperature of chip that detection obtains qualified, if it is not, then stop to
The chip provides operating voltage.
The advantageous effect that said chip excess temperature protection method can be generated is protected with the chip over-temperature that first aspect is provided
The advantageous effect of device is identical, and details are not described herein again.
Based on the above-mentioned technical proposal, optionally, the chip over-temperature guard method further includes：If detecting obtained chip
Operating temperature is qualified, then continues to provide operating voltage to the chip.
Optionally, before the operating temperature of the detection chip the step of, further include：Judgement will be supplied to the core
Whether the operating voltage of piece is qualified：If so, the operating voltage is supplied to the chip, the chip is made to start to work；If
It is no, then the operating voltage is not supplied to the chip, the chip is made to be stopped.
The third aspect, embodiment of the disclosure provide a kind of terminal, and the terminal includes core as described in relation to the first aspect
Piece over-temperature protection device.
The beneficial effect for the chip over-temperature protective device that the advantageous effect that above-mentioned terminal can be generated is provided with first aspect
Fruit is identical, and details are not described herein again.
Description of the drawings
In order to illustrate more clearly of the embodiment of the present disclosure or technical solution in the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some disclosed embodiments for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
The basic block diagram for the chip over-temperature protective device that Fig. 1 is provided by the embodiment of the present disclosure；
The circuit structure diagram for the chip over-temperature protective device that Fig. 2 is provided by the embodiment of the present disclosure；
The planar structure of temperature detection part in the chip over-temperature protective device that Fig. 3 is provided by the embodiment of the present disclosure
Figure；
Fig. 4 is cross section structure figures of the Fig. 3 along dotted line AA '；
The particular flow sheet for the chip over-temperature guard method that Fig. 5 is provided by the embodiment of the present disclosure.
Reference sign：
100- chip over-temperature protective devices；200- chips；
1- temperature detection parts；11- warming resistance；
12- sensors；13,15- insulating cements；
14- adiabatic membranes；2- voltage supply ports；
3- voltage controlling components；31- triggers；
A- first input ends；The second input terminals of b-；
The first output ends of c-；D- second output terminals；
The first logic circuits of 311-；The second logic circuits of 312-；
4- filter circuits；R- resistance；
C- capacitances；5- displays.
Specific implementation mode
To keep the above objects, features, and advantages of the disclosure more obvious and easy to understand, implement below in conjunction with the disclosure
Attached drawing in example, is clearly and completely described the technical solution in the embodiment of the present disclosure.Obviously, described embodiment
Only disclosure a part of the embodiment, instead of all the embodiments.Based on the embodiment in the disclosure, the common skill in this field
All other embodiment that art personnel are obtained under the premise of not making creative work belongs to the model of disclosure protection
It encloses.
Embodiment of the disclosure provides a kind of chip over-temperature protective device, and as depicted in figs. 1 and 2, which protects
Protection unit 100 includes：Temperature detection part 1, voltage supply port 2 and voltage controlling components 3.Wherein, temperature detection part 1 is pacified
Surface loaded on chip 200 is used for the operating temperature of detection chip 200.Voltage supply port 2 is for providing the work of chip 200
Required voltage.Voltage controlling components 3 are connected with temperature detection part 1, voltage controlling components 3 also with voltage supply port 2
It is connected, and voltage controlling components 3 are also connected with chip 200, voltage controlling components 3 are used to judge the chip 200 that detection obtains
Operating temperature it is whether qualified, and when the operating temperature of chip 200 that detection obtains is unqualified, cut-out voltage supply port 2
With the access between chip 200.
It should be noted that above-mentioned " judging whether the operating temperature for the chip 200 that detection obtains is qualified " is specifically as follows：
Judge whether the operating temperature of chip 200 that detection obtains exceeds set temperature threshold value, if exceeding, judge it is unqualified, if not
Exceed, then judges qualification.So-called " set temperature threshold value " can bear most according to chip 200 under the premise of not being damaged
Big operating temperature value determines.
When chip 200 works normally, the voltage that voltage supply port 2 is provided is transmitted to core through voltage controlling components 3
Piece 200, to maintain the normal work of chip 200.In said chip over-temperature protection device 100, since temperature detection part 1 is pacified
Mounted in the surface of chip 200, therefore the operating temperature of chip 200 can be known by the surface temperature of sensor chip 200.It
Afterwards, the operating temperature for the chip 200 that detection obtains is transferred to voltage controlling components 3, voltage controlling components by temperature detection part 1
Set temperature threshold value is stored in 3, what which can bear according to chip 200 under the premise of not being damaged
Maximum operation temperature value determines.The operating temperature for the chip 200 that voltage controlling components 3 obtain detection and set temperature threshold value
It is compared, judges whether the operating temperature for the chip 200 that detection obtains exceeds (whether being more than) set temperature threshold value, if
Exceed, illustrates that the current operating temperature of chip 200 is possible to cause to damage to chip 200, then voltage controlling components 3 are by voltage
Access cut-out between supply port 2 and chip 200, makes the voltage that voltage supply port 2 is provided that can not be transmitted to chip
200, to which chip 200 is stopped.
After chip 200 is stopped, heat is no longer generated, therefore its temperature declines therewith, to effectively avoid
Chip 200 operating temperature is excessively high and the problem of damage chip 200.Also, can also be effectively protected be connected with chip 200 it is aobvious
Display screen.If said chip over-temperature protection device 100 is applied to the exploitation design phase of chip 200, when chip 200 is stopped
Afterwards, designer can analyze for the chip 200 rapidly, find out the reason of going wrong.Compared at present only in core
After piece 200 or display screen go wrong or are damaged, the present situation that just questions and prospect is analyzed, the technical solution of the present embodiment
Can not only avoid the damage of chip 200, additionally it is possible to make designer in time, efficiently problem analysis reason.
It should be noted that the said chip over-temperature protection device 100 that the present embodiment is provided protects the excess temperature of chip 200
Nurse makees be real-time, that is, the temperature detection part 1 of chip over-temperature protective device 100 can real-time detection chip 200
Operating temperature, while voltage controlling components 3 judge chip in real time according to the current operating temperature value for detecting obtained chip 200
200 whether excess temperature, and then worked accordingly, to realize the real-time guard to chip 200.
Fig. 2, Fig. 3 and Fig. 4 are referred to, said chip over-temperature protection device 100 is based on, as a kind of possible design, on
The temperature detection part 1 for stating chip over-temperature protective device 100 includes：Warming resistance 11 and sensor 12.Wherein, warming resistance 11
It is installed on the surface of chip 200, different resistance values is presented at different temperatures；Sensor 12 is connected with warming resistance 11, uses
In the resistance value of detection warming resistance 11, the operating temperature of chip 200 is determined therefrom that, and identified operating temperature value is transferred to
Voltage controlling components 3.
Since warming resistance 11 is installed on the surface of chip 200, it is capable of the surface temperature of direct sensor chip 200
Degree, to which different resistance values be presented.Sensor 12 by detect warming resistance 11 resistance value, according to the resistance value of warming resistance 11 with
Correspondence between temperature determines that the temperature value corresponding to the current resistance value of warming resistance 11, the temperature value are chip 200
Current operating temperature realizes the detection of the operating temperature to chip 200 to convert resistance value to operating temperature value.
Warming resistance 11 can be fixedly installed on the surface of chip 200 by insulating cement 13, and 13 one side of insulating cement can
Play the role of fixed warming resistance 11, on the other hand can also make the surface circuit of warming resistance 11 and chip 200 and first device
Part remains electrically isolated from, and the electric signal in chip 200 is avoided to cause unnecessary interference to the signal in warming resistance 11.
Sensor 12 is mountable on the surface of chip 200, is also mountable to the outside of chip 200, this detects it
The resistance value of warming resistance 11 can't impact.By taking sensor 12 is installed on the surface of chip 200 as an example, in order to avoid core
Heat on piece 200 is conducted to sensor 12, the sensitivity and accuracy of the detection of sensor 12 is influenced, at the bottom of sensor 12
Adiabatic membrane 14 is fixed in portion's (i.e. one side of the sensor 12 towards 200 surface of chip), i.e., is arranged between sensor 12 and chip 200
Adiabatic membrane 14 is isolated by sensor 12 with chip 200；Adiabatic membrane 14 can be pasted on 12 bottom of sensor by insulating cement 15,
Adiabatic membrane 14 can be pasted on by insulating cement 13 on chip 200, to realize fixed installation of the sensor 12 on chip 200.
Referring again to Fig. 1 and Fig. 2, as a kind of possible design, the voltage control of said chip over-temperature protection device 100
Component 3 processed may include trigger 31, which includes：First input end a, the second input terminal b, the first output end c, second
Output end d and the first logic circuit 311.Wherein, first input end a is connected with temperature detection part 1, for receiving temperature detection
Component 1 detects the operating temperature of obtained chip 200；Second input terminal b is connected with voltage supply port 2, is used for receiving voltage
The chip 200 that supply port 2 is provided works required voltage；First output end c is connected with chip 200；Second output terminal d
Ground connection；First logic circuit 311 is connected with first input end a and the second input terminal b, the chip 200 obtained for judging detection
Operating temperature whether exceed set temperature threshold value, if so, with second output terminal d connect, if it is not, then with the first output end c
It connects.
In above-mentioned trigger 31, when the first logic circuit 311 judges that the operating temperature of chip 200 exceeds set temperature threshold
When value, illustrate that the operating temperature of chip 200 is excessively high, chip 200 may be damaged, then the first logic circuit 311 and second exports
D is held to connect, to which second output terminal d becomes the signal output end of trigger 31, the voltage that voltage supply port 2 is provided is from the
Two output end d outputs, and second output terminal d ground connection, this is equivalent to the voltage ground for being provided voltage supply port 2, to
Access between voltage supply port 2 and chip 200 is cut off, and voltage supply port 2 provides voltage without normal direction chip 200.
When the first logic circuit 311 judges the operating temperature of chip 200 without departing from set temperature threshold value, illustrate chip
200 operating temperature is normal, will not damage chip 200, then the first logic circuit 311 and the first output end c are connected, to first
Output end c becomes the signal output end of trigger 31, and the voltage that voltage supply port 2 is provided is exported from the first output end c, the
One output end c is connected with chip 200, to which the voltage that voltage supply port 2 is provided is provided to chip 200, maintains chip
200 normal work.
Further, continuing with referring to Fig. 1 and Fig. 2, above-mentioned trigger 31 may also include the second logic circuit 312, this
Two logic circuits 312 are connected with the second input terminal b, required for judging that chip 200 that voltage supply port 2 is provided works
Voltage it is whether qualified, if so, open trigger 31, if it is not, then closing trigger 31.
" judge that chip 200 that voltage supply port 2 the is provided required voltage that works is it should be noted that above-mentioned
No qualification " is specifically as follows：Judge that whether chip 200 that voltage supply port 2 is provided works required voltage beyond setting
Fixed working voltage threshold value judges qualification if exceeding, if without departing from judging unqualified.So-called " setting operating voltage threshold value "
Required voltage can be worked normally according to chip 200 to set.
In the above scheme, the second logic circuit 312 is worked by obtaining the chip 200 that voltage supply port 2 is provided
Whether required voltage value judges the voltage beyond setting operating voltage threshold value, which can be according to chip 200
Required voltage is worked normally to set.
If the currently provided voltage of voltage supply port 2 illustrates chip 200 in voltage beyond setting operating voltage threshold value
It can be normally carried out work under the currently provided voltage of supply port 2, then open trigger 31, trigger 31 is started to work,
The currently provided voltage of voltage supply port 2 can be supplied to chip 200 by trigger 31.
If the currently provided voltage of voltage supply port 2 illustrates chip 200 in electricity without departing from setting operating voltage threshold value
It cannot be normally carried out work under the currently provided voltage of pressure supply port 2, then close trigger 31, trigger 31 stops work
Make, the access between voltage supply port 2 and chip 200 is cut off, and the currently provided voltage of voltage supply port 2 can not lead to
It crosses trigger 31 and is supplied to chip 200.
Utilize the above-mentioned deterministic process of the second logic circuit 312, it is ensured that it is chip to be supplied to the voltage of chip 200
The 200 required voltages of normal work, avoid chip 200 from occurring can not work normally asking for even damage due to electric voltage exception
Topic.
Optionally, above-mentioned trigger 31 can be voltage-sensitive D-flip flop.
Referring again to Fig. 1 and Fig. 2, the chip over-temperature protective device 100 in the present embodiment may also include：Filter circuit 4,
It is connected between voltage supply port 2 and voltage controlling components 3, specifically may connect to voltage supply port 2 and trigger 31
The second input terminal b between, the required voltage that works of the chip 200 for being provided voltage supply port 2 is filtered,
Keep its waveform smooth.
As a kind of possible design, which may include：Resistance R and capacitance C.Wherein, one end of resistance R with
Voltage supply port 2 is connected, and the other end is connected with voltage controlling components 3 (specifically can be with the second input terminal b phases of trigger 31
Even)；One end of capacitance C is connected with voltage controlling components 3 and (can specifically be connected with the second input terminal b of trigger 31), that is,
It says, one end of capacitance C is connected with the end for being connected to voltage controlling components 3 of resistance R, the other end ground connection of capacitance C.
Continuing with referring to Fig. 1 and Fig. 2, the present embodiment chips over-temperature protection device 100 may also include display 5, this is aobvious
Show that device 5 is connected with temperature detection part 1, for showing the operating temperature value for detecting obtained chip 200, in order to designer
It could be visually observed that the operating temperature of chip 200, and it is timely when the operating temperature of chip 200 exceeds set temperature threshold value
Take corresponding counter-measure.Further, if the temperature detection part 1 in chip over-temperature protective device 100 can be examined in real time
Survey chip 200 operating temperature, then display 5 can real-time display chip 200 operating temperature value, consequently facilitating designer's energy
Enough it is visually observed that the situation of change of the operating temperature of chip 200.
It should be noted that the chip over-temperature protective device 100 that above example is provided is applicable not only to chip 200
Develop the design phase, moreover it is possible to be integrated in terminal device, be protected to the chip of terminal device.Based on this, the reality of the disclosure
It applies example and additionally provides a kind of terminal, which includes chip over-temperature protective device 100 as described above in Example.When chip mistake
, it can be achieved that protection to the chip in terminal, avoids chip in actual use process when temperature protection device 100 is integrated in terminal
In be damaged since operating temperature is excessively high, and the display screen of thus caused terminal is avoided vertical line occur, blank screen, dodge line
The problems such as.
It should be noted that the operating temperature of chip that detection obtains can be shown using the display screen of terminal, for example, can
Corresponding application program is added in the terminal, would know that the current operating temperature of terminal chip by clicking the application program, from
And user can predict whether the current working condition of chip is abnormal according to the operating temperature value.
In addition, the terminal that the present embodiment is provided can be liquid crystal display panel, Electronic Paper, OLED (Organic Light-
Emitting Diode, Organic Light Emitting Diode) panel, mobile phone, tablet computer, television set, display, laptop, number
Any end products or component with chip such as code photo frame, navigator.
Based on the chip over-temperature protective device 100 that above example is provided, embodiment of the disclosure additionally provides one kind
Chip over-temperature guard method, this method can be applied in the chip over-temperature protective device 100 that above example is provided, in chip
When 200 operating temperature is excessively high, chip 200 is protected.The chip over-temperature guard method includes the following steps：
The operating temperature of detection chip；
Judge whether the operating temperature for the chip that detection obtains is qualified, if it is not, then stopping providing operating voltage to chip.
By said chip excess temperature protection method, it can be achieved that the operating temperature in chip is unqualified, i.e., operating temperature is excessively high
When, stop providing operating voltage to chip in time, chip is made to be stopped, it is excessively high to core to efficiently avoid operating temperature
Piece internal circuit and element cause to damage.
In said chip excess temperature protection method, if the operating temperature for the chip that detection obtains is qualified, i.e., without departing from setting
Temperature threshold can then continue to provide operating voltage to chip, maintain chip normal work.
In order to ensure to be supplied to the operating voltage of chip disclosure satisfy that, chip works normally, can be in the work temperature of detection chip
Before the step of spending, whether judgement will be supplied to the operating voltage of chip qualified：If so, the operating voltage is supplied to core
Piece makes chip start to work；If it is not, then the operating voltage is not supplied to the chip, chip is made to be stopped.
Below by taking the voltage controlling components 3 in chip over-temperature protective device 100 use trigger 31 as an example, to above-mentioned implementation
Chip over-temperature guard method provided in example is illustratively discussed in detail.As shown in figure 5, the chip over-temperature guard method
Include the following steps：
S1：Voltage supply port provides the voltage needed for chip operation.
S2：Whether trigger judges provided voltage beyond setting operating voltage threshold value：If so, the normal work of trigger
Make；If it is not, then trigger does not work, two output end c and d are without output.
S3：The operating temperature of temperature detection part detection chip, is transferred to trigger.
S4：Trigger judges whether the operating temperature value that detection obtains exceeds set temperature threshold value：If it is not, then trigger
First output end c exports provided operating voltage, and chip starts to work normally；If so, the second output terminal d of trigger is defeated
Go out provided operating voltage, chip does not work.
The foregoing is merely the protection domains of the specific implementation mode of the disclosure, but the disclosure to be not limited thereto, any
Those familiar with the art in the technical scope that the disclosure discloses, all answer by the change or replacement that can be readily occurred in
Cover within the protection domain of the disclosure.Therefore, the protection domain of the disclosure should be with the scope of the claims
It is accurate.
Claims (13)
1. a kind of chip over-temperature protective device, which is characterized in that the chip over-temperature protective device includes：
It is installed on the temperature detection part of chip surface, the operating temperature for detecting the chip；
Voltage supply port, for providing the chip operation required voltage；
The voltage controlling components being connected with the temperature detection part and the voltage supply port, the voltage controlling components are also
It is connected with the chip, for judging whether the operating temperature for detecting obtained chip is qualified, and is detecting obtained chip
When operating temperature is unqualified, the access between the voltage supply port and the chip is cut off.
2. chip over-temperature protective device according to claim 1, which is characterized in that the temperature detection part includes：
It is installed on the warming resistance of the chip surface, different resistance values is presented at different temperatures；
The sensor being connected with the warming resistance, the resistance value for detecting the warming resistance, determines therefrom that the chip
Operating temperature, and identified operating temperature value is transferred to the voltage controlling components.
3. chip over-temperature protective device according to claim 2, which is characterized in that the warming resistance is solid by insulating cement
Dingan County is loaded on the chip surface.
4. chip over-temperature protective device according to claim 2, which is characterized in that the sensor base is fixed with thermal insulation
Film, the sensor and the adiabatic membrane are pasted on the chip surface by insulating cement.
5. chip over-temperature protective device according to claim 1, which is characterized in that the voltage controlling components include triggering
Device, the trigger include：
The first input end being connected with the temperature detection part, the operating temperature for receiving the chip that detection obtains；
The second input terminal being connected with the voltage supply port, the chip work provided for receiving the voltage supply port
Make required voltage；
The first output end being connected with the chip；
The second output terminal of ground connection；
The first logic circuit being connected with the first input end and second input terminal, the chip obtained for judging detection
Operating temperature whether exceed set temperature threshold value, if so, being connected with the second output terminal, if it is not, then with described first
Output end is connected.
6. chip over-temperature protective device according to claim 5, which is characterized in that the trigger further includes and described
The second connected logic circuit of two input terminals, the required electricity of chip operation provided for judging the voltage supply port
Whether pressure is beyond setting operating voltage threshold value, if so, the trigger is opened, if it is not, then closing the trigger.
7. according to claim 1~6 any one of them chip over-temperature protective device, which is characterized in that the chip over-temperature is protected
Protection unit further includes the filter circuit being connected between the voltage supply port and institute's voltage controlling components, for the electricity
The required voltage of chip operation that pressure supply port is provided is filtered, and keeps its waveform smooth.
8. chip over-temperature protective device according to claim 7, which is characterized in that the filter circuit includes：
Resistance, one end are connected with the voltage supply port, and the other end is connected with the voltage controlling components；
Capacitance, one end are connected with the voltage controlling components, other end ground connection.
9. according to claim 1~6 any one of them chip over-temperature protective device, which is characterized in that the chip over-temperature is protected
Protection unit further includes the display being connected with the temperature detection part, for showing the operating temperature for detecting obtained chip.
10. a kind of chip over-temperature guard method, which is characterized in that the chip over-temperature guard method includes：
The operating temperature of detection chip；
Judge whether the operating temperature for the chip that detection obtains is qualified, if it is not, then stopping providing operating voltage to the chip.
11. chip over-temperature guard method according to claim 10, which is characterized in that the chip over-temperature guard method is also
Including：If the operating temperature for detecting obtained chip is qualified, continue to provide operating voltage to the chip.
12. the chip over-temperature guard method according to claim 10 or 11, which is characterized in that in the work of the detection chip
Before the step of making temperature, further include：
Whether judgement will be supplied to the operating voltage of the chip qualified：If so, the operating voltage is supplied to the core
Piece makes the chip start to work；If it is not, then the operating voltage is not supplied to the chip, the chip is made to be stopped.
13. a kind of terminal, including chip, which is characterized in that the terminal further includes such as claim 1~9 any one of them
The temperature detection part of chip over-temperature protective device, the chip over-temperature protective device is installed on the surface of the chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810642131.8A CN108777474A (en) | 2018-06-21 | 2018-06-21 | Chip over-temperature protective device and method, terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810642131.8A CN108777474A (en) | 2018-06-21 | 2018-06-21 | Chip over-temperature protective device and method, terminal |
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| CN108777474A true CN108777474A (en) | 2018-11-09 |
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| CN201810642131.8A Pending CN108777474A (en) | 2018-06-21 | 2018-06-21 | Chip over-temperature protective device and method, terminal |
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Application publication date: 20181109 |