CN105763074B - Power supply adaptor and the electronic equipment for being applicable in the power supply adaptor - Google Patents
Power supply adaptor and the electronic equipment for being applicable in the power supply adaptor Download PDFInfo
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- CN105763074B CN105763074B CN201610200233.5A CN201610200233A CN105763074B CN 105763074 B CN105763074 B CN 105763074B CN 201610200233 A CN201610200233 A CN 201610200233A CN 105763074 B CN105763074 B CN 105763074B
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- Prior art keywords
- power supply
- supply adaptor
- mainboard
- input terminal
- voltage
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/327—Means for protecting converters other than automatic disconnection against abnormal temperatures
Abstract
The present invention provides a kind of power supply adaptor, including ADC mould group, for converting alternating current to direct current and detecting the voltage of the direct current, the power supply adaptor further include: threshold cell is used for output voltage threshold value；Comparator, two input terminal are connected respectively to the ADC mould group and the threshold cell, are configured to export pre-warning signal when the voltage of the direct current is lower than the voltage threshold.The present invention also provides a kind of electronic equipments for being applicable in the power supply adaptor.Power supply adaptor of the invention and the electronic equipment for being applicable in the power supply adaptor, the temperature for capableing of output voltage to power supply adaptor and electric current and adapter is protected, while guaranteeing timely early warning, so that the circuit of mainboard is simplified.
Description
Technical field
The present invention relates to a kind of power supply adaptor and it is applicable in the electronic equipment of the power supply adaptor, in particular to one kind has
It protects the power supply adaptor of warning function and is applicable in the electronic equipment of the power supply adaptor.
Background technique
The DC voltage of existing power supply adapter output, can be by supervision equipment, such as charger, to monitor.In general,
If the power supply adaptor being connect with mainboard due to mismatch cause brownout or it is excessively high when, charger can be the power supply
The voltage of adapter is removed from mainboard, and system can power off at this time；If be connected to mainboard is matched power supply adaptor, such as
Shown in Fig. 1, power supply adaptor 10 with exporting direct current S1 and adapter two signals of (i.e. the earth signal of adapter) S2 to mainboard
20, peripheral power detection device and comparator 23 are set on mainboard 20, and judgement causes power supply adaptor 10 when power consumption is excessive
When brownout, a low level is exported to inform that CPU 21 and/or GPU 22 carries out frequency reducing.
The DC current of power supply adaptor output can be by supervision equipment, such as charger, to monitor.Work as system power dissipation
It is excessive cause adapter export electric current it is excessive when, charger is notified that the embedded controller (EC) on mainboard, is informed by EC
CPU 21 and/or GPU 22 carries out frequency reducing, to reduce power consumption.
And the temperature protection of power supply adaptor, after the temperature that setting can only be reached by power supply adaptor, adapter oneself
Carry out power-off protection.
Prior art described above, there are the following problems:
1) for the protection scheme of the voltage and current of matched power supply adaptor, the design on mainboard can be made to become very multiple
Miscellaneous, and need to carry out a large amount of verifying to optimize route, also need to rely on EC sometimes, if EC occurs crashing or busy
When, protection will be unable to implement.
2) it is directed to the scheme of unmatched power supply adaptor, directly its voltage can be removed from mainboard, will lead to system
Power-off.
3) temperature protection for power supply adaptor can not be implemented.
Summary of the invention
The object of the present invention is to provide it is a kind of being capable of output voltage to power supply adaptor and electric current and adapter
The scheme protected of temperature, user can also be reminded in time when power supply adaptor and mainboard mismatch, rather than directly
Remove the voltage of power supply adaptor.
As one aspect of the present invention, power supply adaptor includes ADC mould group, for converting alternating current to direct current simultaneously
And the voltage of the detection direct current, the power supply adaptor further include: threshold cell is used for output voltage threshold value；Comparator,
Two input terminal is connected respectively to the ADC mould group and the threshold cell, is configured to be lower than when the voltage of the direct current
When the voltage threshold, pre-warning signal is exported.
Power supply adaptor of the invention, including ADC mould group, for converting alternating current to direct current and detecting described straight
The transient current of galvanic electricity, the power supply adaptor further include: threshold cell, for exporting instantaneous current threshold；Comparator, two
A input terminal is connected respectively to the ADC mould group and the threshold cell, is configured to be higher than when the transient current of the direct current
When the instantaneous current threshold, pre-warning signal is exported.
Power supply adaptor of the invention, including ADC mould group, for converting alternating current to direct current and detecting described straight
The average current of galvanic electricity, the power supply adaptor further include: threshold cell, for exporting average current threshold value；Comparator, two
A input terminal is connected respectively to the ADC mould group and the threshold cell, is configured to be higher than when the average current of the direct current
When the average current threshold value, pre-warning signal is exported, wherein the average current is being averaged for the transient current in setting time
Value.
Power supply adaptor of the invention, including ADC mould group, for converting alternating current to direct current and detecting the electricity
The temperature of source adapter, the power supply adaptor further include: threshold cell is used for output temperature threshold value；Comparator, two is defeated
Enter end and be connected respectively to the ADC mould group and the threshold cell, is configured to the temperature when the power supply adaptor higher than described
When temperature threshold, pre-warning signal is exported.
Preferably, the threshold cell is register, memory or voltage source.
Preferably, the pre-warning signal is low level.The output end of the comparator is connected to by drawing high resistance and is drawn high
Power supply, the output level overturning of the comparator when exporting the pre-warning signal.
On the other hand, the present invention also provides a kind of electronic equipment for being applicable in above-mentioned power supply adaptor, the power adaptations
Device further includes the output terminal for exporting the pre-warning signal；Be provided on the mainboard of the electronic equipment for it is described defeated
Inputting the input terminal of the pre-warning signal, drawing high resistance and drawing high power supply, the input terminal passes through for terminal electrical connection out
It is described draw high resistance and be connected to described draw high power supply；The CPU and/or GPU being set on the mainboard are connected to the input terminal
Son is to receive the pre-warning signal and be configured to, and when receiving the pre-warning signal, executes frequency redution operation.
Further, the embedded controller being set on the mainboard is connected to the input terminal and is configured to, when
When the power supply adaptor is connect with the mainboard, judge whether the voltage quasi position of the signal of the input terminal input is low
In predeterminated voltage, if so, notifying power supply adaptor described in user and the mainboard by the operating system of the electronic equipment
It mismatches；The power supply adaptor further includes comparing delayer, control switch and dragging down resistance, and the output end of the comparator is logical
It crosses the control switch being connected in series and described drags down resistance eutral grounding；The first input end of the relatively delayer is connected to institute
The output end of comparator is stated, the second input terminal is connected to reference voltage, and output end is connected to the control of the control switch
End；The control switch is configured to normally off, and when its control terminal receives control signal, the control switch is disconnected；Its
In, the delay time of the relatively delayer is greater than the judgement time of the embedded controller.
Power supply adaptor of the invention and the electronic equipment for being applicable in the power supply adaptor increase in the inside of power supply adaptor
To the protection early warning mechanism of voltage, electric current and temperature, while guaranteeing timely early warning, so that the circuits as practical letter of mainboard side
Change；And CPU and/or GPU frequency reducing can be signaled directly to carry out power consumption limit, greatly improved to power adaptation
The efficiency of the protection early warning of device；Meanwhile for the unmatched power supply adaptor of mainboard, remind user allow user to decide whether to move
It removes, avoids system cut-off.
Detailed description of the invention
Fig. 1 is the power supply adaptor of two-terminal and the structure of electronic equipment and connection schematic diagram of the prior art；
Fig. 2 is the structure and connection schematic diagram of the first embodiment of power supply adaptor and electronic equipment of the invention；
Fig. 3 is the power supply adaptor of three terminals and the structure of electronic equipment and connection schematic diagram of the prior art；
Fig. 4 is the structure and connection schematic diagram of the second embodiment of power supply adaptor and electronic equipment of the invention；
Fig. 5 is the structure and connection schematic diagram of the 3rd embodiment of power supply adaptor and electronic equipment of the invention.
Specific embodiment
To power supply adaptor of the invention and it is applicable in the electricity of the power supply adaptor with reference to the accompanying drawings and detailed description
Sub- equipment is described in further detail, but not as a limitation of the invention.
As shown in Fig. 2,4,5, it is preferable that power supply adaptor 10 of the invention, including ADC mould group 11 are used to exchange
Electricity is converted into direct current and detects the voltage S3-1, transient current S3-2, average current S3-3 of direct current (in preferably 1 second
The average value of transient current S3-2) and power supply adaptor 10 temperature S3-4.
Power supply adaptor 10 further includes comparator C1~C4, and the first input end of comparator C1~C4 is connected to ADC mould group
11, it is respectively intended to receive the voltage S3-1 of direct current, transient current S3-2, average current S3-3 and power supply adaptor 10
Temperature S3-4；Its second input terminal is connected to threshold cell (not shown), for receiving voltage threshold TH1, transient current
Threshold value TH2, average current threshold value TH3 and temperature threshold TH4.Comparator C1~C4 is to the voltage S3-1 to direct current, wink
When electric current S3-2, average current S3-3 and the temperature S3-4 of power supply adaptor 10 whether be more than to set (being below or above)
Respective threshold is detected, and pre-warning signal S3 is exported when parameter reaches threshold value.
Threshold value TH1~TH4 is exported by threshold cell (not shown), threshold cell can be store threshold value TH1~
The register or memory of TH4 is also possible to that the voltage source of voltage corresponding with threshold value TH1~TH4 can be exported.
The output port 13 of power supply adaptor 10 further includes terminals P 3, and the output end of comparator C1~C4 is connected to output end
The terminals P 3 of mouth 13, to pre-warning signal S3 be exported, so that the external equipment connecting with power supply adaptor 10 receives and uses
Pre-warning signal S3.
In above-mentioned preferred embodiment, power supply adaptor 10 of the invention contains comparator C1~C4 simultaneously, i.e.,
It is provided with the temperature of voltage S3-1 to direct current, transient current S3-2, average current S3-3 and power supply adaptor 10 simultaneously
The protection early warning mechanism of S3-4.It will be appreciated by persons skilled in the art that due to voltage, transient current, average current, with
And protecting for temperature does not interdepend between early warning scheme, therefore power supply adaptor 10 of the invention, can only comprising one or
Comparator comprising other numbers, to realize to one of voltage, transient current, average current and temperature or a variety of
Protection early warning mechanism, without identical with the preferred embodiment of the present invention, i.e., simultaneously include comparator C1~C4.
The electronic equipment for being applicable in power supply adaptor 10 of the invention, as shown in Fig. 2,4,5, including power supply adaptor 10 and master
Plate 20.It is provided with CPU 21 and GPU 22 on mainboard 20, signal is received by the plug wire 25 on mainboard 20.On mainboard 20
The terminals P 3 of plug wire 25, for inputting the terminals P 3 that pre-warning signal S3, CPU 21 and GPU 22 are directly connected to plug wire 25, thus
When receiving pre-warning signal S3, CPU 21 and GPU 22 execute frequency redution operation to control power consumption.
In view of the signal of comparator output is binary signal, in order to guarantee that CPU 21 and GPU22 can be worked normally,
Preferably, pre-warning signal S3 is low level.That is the default output of comparator C1~C4 is high level, when the power supply adaptor of monitoring
Parameter when reaching corresponding threshold value, the level overturning of comparator C1~C4 output end, the i.e. electricity of comparator C1~C4 output end
It is flat to become low level.Correspondingly, when power supply adaptor 10 is connected with mainboard 20 (i.e. the output port 13 of power supply adaptor 10 with
The plug wire 25 of mainboard 20 is connected) when, since the down-scaled signals receiving end of CPU 21 and GPU 22 passes through the terminals P 3 of plug wire 25
The output end of comparator C1~C4 is connected to the terminals P 3 of output port 13, therefore, when comparator exports low level early warning
When signal S3, the down-scaled signals receiving end of CPU 21 and GPU 22 receive low level signal, CPU 21 and GPU 22 with
Execute frequency redution operation.
Below with reference to a preferred embodiment of the present invention, power supply adaptor of the invention and electronic equipment are made further
Detailed description.
First embodiment
As shown in Fig. 2, the structure and connection for the first embodiment of power supply adaptor and electronic equipment of the invention are shown
It is intended to.The embodiment is to set to the power supply adaptor of existing two-terminal shown in FIG. 1 with the electronics for being applicable in the power supply adaptor
It is standby to improve.
In this embodiment, power supply adaptor 10 includes ADC mould group 11, comparator C1~C4, draws high power supply VH1, draws high
Resistance RH1 and output port 13.
Wherein, there are three terminals Ps 1, P2, P3 for the tool of output port 13.Wherein terminals P 1 is held for exporting DC signal S1
Sub- P2 is used for the earth signal S2 of o adapter, and newly-increased terminals P 3 is for exporting pre-warning signal S3.Although shown in Figure 2 new
Increase terminals P 3 between terminals P 1 and P2, it will be appreciated by those skilled in the art that it can also be located at the defeated of place
Any other position of exit port 13.
The first input end of comparator C1~C4 is connected to ADC mould group 11, be respectively intended to receive direct current voltage S3-1,
The temperature S3-4 of transient current S3-2, average current S3-3 and power supply adaptor 10；Its second input terminal is connected to threshold value list
First (not shown), for receiving voltage threshold TH1, instantaneous current threshold TH2, average current threshold value TH3 and temperature threshold
Value TH4.Comparator C1~C4 is suitable to voltage S3-1, transient current S3-2, average current S3-3 and the power supply to direct current
Whether the temperature S3-4 of orchestration 10 is more than that the respective threshold of (being below or above) setting is detected, and when parameter reaches threshold value
Export pre-warning signal S3.
The output end of comparator C1~C4 is connected to by drawing high resistance RH1 and draws high power supply VH1, and comparator C1~C4
Output end is connected to the terminals P 3 of output port 13, to transmit pre-warning signal S3 to external equipment.
When comparator C1~C4 does not have output signal, the level of output end is raised power supply VH1 and draws high, for high electricity
Flat, the terminals P 3 of output port 13 is also high level.When comparator C1~C4 has signal output, output level overturning, i.e.,
Become low level, the terminals P 3 of output port 13 also becomes low level at this time.
Comparator C1 is configured to as threshold value TH1 of the voltage S3-1 of first input end lower than the voltage of the second input terminal,
Output end exports low level pre-warning signal S3, i.e. output level is overturn.Comparator C2 is configured to work as the instantaneous of first input end
When electric current S3-2 is higher than the instantaneous current threshold TH2 of the second input terminal, output end exports low level battery pre-warning signal S3, i.e.,
Output level overturning.Comparator C3 is configured to be higher than the average current of the second input terminal as the average current S3-3 of first input end
When threshold value TH3, output end exports low level battery pre-warning signal S3, i.e. output level is overturn.Comparator C4 is configured to when the
When the temperature S3-4 of one input terminal is higher than the temperature threshold TH4 of the second input terminal, output end exports low level battery early warning letter
Number S3, i.e. output level are overturn.
Electronic equipment of the invention includes power supply adaptor 10 and mainboard 20.CPU 21 and GPU is provided on mainboard 20
22, with down-scaled signals receiving end, pre-warning signal S3 is received by the terminals P 3 of the plug wire 25 on mainboard 20.Due to plug wire
25 terminals P 3 is connected with the terminals P 3 of the output port 13 of power supply adaptor 10, therefore, the end of plug wire 25 under default conditions
The signal of sub- P3 is high level signal, and when there is pre-warning signal S3 output, the signal of the terminals P 3 of plug wire 25 becomes low level letter
Number.When CPU 21 and GPU 22 receive low level pre-warning signal S3, frequency redution operation is executed to control power consumption.
Compared with the prior art, power supply adaptor of the invention and electronic equipment have it is following the utility model has the advantages that
1) arrangement for eliminating peripheral power detection device on mainboard, comparator and some controllers, simplifies master
The circuit of plate and power control etc..
2) voltage, electric current, temperature are monitored inside power supply adaptor, it is more straight than in mainboard side design observation circuit
It connects also more acurrate.
3) circuit inside power supply adaptor directly carries out monitoring for protection to the parameters of adapter, once it finds the problem
Timely early warning, without being calculated and being compared by the equipment on mainboard, this early warning is more timely than the prior art, can be avoided because
The case where controllers such as peripheral detection device or EC are busy or crash caused frequency reducing not in time, reduces the general of system exception
Rate.
4) circuit inside power supply adaptor directly carries out monitoring for protection to the parameters of adapter, once it finds the problem
Timely early warning, and pre-warning signal is directly connected to CPU and/or GPU, without by the controllers such as EC go again control CPU and/or
GPU carries out frequency reducing, and the reaction that electronic equipment most rapidly does the abnormal problem of battery utmostly avoids and is
The generation for exception of uniting.
Second embodiment
As shown in figure 4, the structure and connection for the second embodiment of power supply adaptor and electronic equipment of the invention are shown
It is intended to.The embodiment is to set to the power supply adaptor of existing three terminal shown in Fig. 3 with the electronics for being applicable in the power supply adaptor
It is standby to improve.
The power supply adaptor of three terminals and applicable electronic equipment are as shown in Figure 3 in the prior art.Power supply adaptor 10
Output port 13 includes three 1~P3 of terminals P, is respectively intended to earth signal S2, Yi Jigong of output DC signal S1, adapter
Rate identification signal S3 '.Wherein, power identification signal S3 ' identifies the power of power supply adaptor 10 for mainboard 20.
As shown in figure 3, power supply adaptor 10 further includes dragging down resistance RL, the terminals P 3 of output port 13 is by dragging down electricity
Hinder RL ground connection.It is additionally provided on mainboard 20 and draws high power supply VH2 and draw high resistance RH2, the terminals P 3 of plug wire 25 is by drawing high resistance
RH2, which is connected to, draws high power supply VH2.
After power supply adaptor 10, which is inserted into electronic equipment, to be connect with mainboard 20, terminals P 3 and the plug wire 25 of output port 13
Terminals P 3 is connected, and the resistance RL and resistance RH2 that draws high on mainboard 20 that drags down inside power supply adaptor 10 is connected in series to form
Bleeder circuit, the voltage of node A are connected to EC 24, and EC 24 can judge the power supply adaptor 10 according to the voltage quasi position of node A
Power, if the voltage quasi position of node A be lower than a certain setting value, illustrate that the power of the power supply adaptor 10 is matched lower than standard
It sets, EC 24 can be controlled in the prior art removes the direct current that power supply adaptor 10 provides from mainboard 20.
The second embodiment of the present invention as shown in Figure 4, after being improved in the present invention prior art shown in Fig. 3
Technical solution.
In this embodiment, power supply adaptor 10 include ADC mould group 11, comparator C1~C4, first draw high power supply VH1,
First draws high resistance RH1, drags down resistance RL, first and second control switch K1, K2, compares delayer DL and output port
13。
Wherein, there are three terminals Ps 1, P2, P3 for the tool of output port 13.Wherein terminals P 1 is held for exporting DC signal S1
Sub- P2 is used for the earth signal S2 of o adapter, and terminals P 3 is used for output power identification signal S3 ' and pre-warning signal S3.
It is identical with the first embodiment, the first input end of comparator C1~C4 is connected to ADC mould group 11, is respectively intended to receive
The voltage S3-1 of direct current, transient current S3-2, average current S3-3 and power supply adaptor 10 temperature S3-4；It second
Input terminal is connected to threshold cell (not shown), for receiving voltage threshold TH1, instantaneous current threshold TH2, average current
Threshold value TH3 and temperature threshold TH4.Comparator C1~C4 is to the voltage S3-1, transient current S3-2, average to direct current
Whether the temperature S3-4 of electric current S3-3 and power supply adaptor 10 is more than that the respective threshold set (being below or above) is examined
It surveys, and exports pre-warning signal S3 when parameter reaches threshold value.
The output end of comparator C1~C4 draws high resistance RH1 connection by the second control switch K2 and first being connected in series
Power supply VH1 is drawn high to first, and by the first control switch K1 being connected in series and drags down resistance RL ground connection.Comparator C1~
The output end of C4 is also connected to the terminals P 3 of output port 13, to transmit pre-warning signal S3 to external equipment.
The first input end for comparing delayer DL is connected to the output end of comparator C1~C4, the second input terminal connection ginseng
Voltage Vref is examined, output end is connected to the control terminal of the first and second control switches K1, K2, that is, compares the output of delayer DL
Signal is control signal Ctrl1, Ctrl2 of the first and second control switches K1, K2.When the voltage of first input end is higher than second
When the voltage of input terminal, compare delayer DL and start timing, after timing preset time, output control signal Ctrl1, Ctrl2 with
It controls the first and second control switches K1, K2 and changes state (be changed into closure from disconnection or be changed into disconnection from closure).
Electronic equipment of the invention includes power supply adaptor 10 and mainboard 20.Be provided on mainboard 20 CPU 21, GPU 22,
EC 24, plug wire 25, third control switch K3, second draw high resistance RH2 and second and draw high power supply VH2.
Plug wire 25 includes three terminals Ps 1, P2, P3, is respectively used to three ends with the output port 13 of power supply adaptor 10
Sub- P1, P2, P3 are connected.Wherein, terminals P 1 is used for transmission DC signal S1, and terminals P 2 is used for transmission the earth signal of adapter
S2, terminals P 3 are used for transmission power identification signal S3 ' and pre-warning signal S3.
On the motherboard 120, the terminals P 3 of plug wire 25 draws high resistance by the third control switch K3 and second being connected in series
RH2 is connected to second and draws high power supply VH2；The down-scaled signals receiving end of CPU 21 and GPU 22 is connected to the terminals P 3 of plug wire 25,
To receive pre-warning signal S3；EC24 is also connected to the terminals P 3 of plug wire 25 to receive power identification signal S3 ', while EC 24 is also
There is an input terminal to be used to input adapter and be inserted into signal S4, also output control signal Ctrl3 is used to control third control and opens
It closes K3 and changes switch state.
First and third control switch K1, K3 default conditions be closure, the default conditions of the second control switch K2 are disconnected
It opens.Adapter insertion signal S4 is exported by charger, and when power supply adaptor is inserted into mainboard, charger will plug in adapter
Enter signal S4 and is sent to EC 24.
In this embodiment, electronic equipment of the invention not only has the function of the parameter monitoring of power supply adaptor, also has
The power detection of power supply adaptor.
Electronic equipment is first described to the power detection process of power supply adaptor.The process has only just been inserted into power supply adaptor
Electronic equipment (i.e. power supply adaptor is just connect with mainboard) Shi Jinhang.In order to guarantee only just to be inserted into electronics in power supply adaptor
Power detection is just carried out when equipment, EC 24 needs to start immediately after receiving adapter insertion signal S4 to power supply adaptor
Power detection process.
After power supply adaptor 10 is connect with mainboard 20, at this point, switch K1 and K3 are closed, K2 is disconnected, due to output port
13 terminals P 3 is connected with the terminals P 3 of plug wire 25, drags down resistance RL and drawing high on mainboard 20 inside power supply adaptor 10
Resistance RH2 is connected in series to form bleeder circuit, and the voltage (i.e. power identification signal S3 ') of node A is connected to EC 24,24 meeting of EC
The power of the power supply adaptor 10 is judged according to the voltage quasi position of node A.
For example, the power with the matched power supply adaptor 10 of mainboard 20 is 90W, if the voltage quasi position of node A is lower than pre-
If voltage, illustrate the power of power supply adaptor 10 lower than standard configuration value 90W, for example, 65W.At this point, EC 24 can pass through electronics
The operating system of equipment notifies user's power supply adaptor 10 and mainboard 20 to mismatch, it is proposed that user's replacement.If the electricity of node A
Level is pressed to be equal to or higher than predeterminated voltage, the power for illustrating power supply adaptor 10 is standard configuration value 90W or matches higher than standard
Value, for example, 135W are set, then EC 24 determines that the power supply adaptor 10 can continue to use, without notifying user to replace.
Therefore, in this embodiment, electronic equipment of the invention is when detecting the unmatched power supply adaptor of power, no
Directly the voltage of adapter can be removed from mainboard, so that electronic equipment be caused to power off, and be reminded simply by operating system
User replaces.The program guarantee system it is safe while, make to protect it is more flexible, be conducive to use.
It should be noted that since CPU 21 and GPU 22 are configured to when its down-scaled signals receiving end detects low level
Frequency reducing can just be executed, and during the power detection to power supply adaptor, this branch pressure voltage of node A be always maintained at one compared with
High level, therefore, during carrying out power detection to power supply adaptor, frequency reducing behaviour is not carried out in CPU 21 and GPU 22
Make.
After power supply adaptor 10 is connect with mainboard 20, since the voltage for the first input end for comparing delayer DL is node
The branch pressure voltage of A, level are higher；The preset value of the reference voltage Vref of its second input terminal input is usually one lower
Level, i.e., after power supply adaptor 10 is connected to mainboard 20, the voltage quasi position of first input end is just than the second input terminal
Voltage quasi position is high, compares delayer DL and starts to start the timing to delay time.
Compare delayer DL and be predetermined a delay time, after the timing warp of delay time, compares delayer DL
Output control signal Ctrl1, Ctrl2 are changed into the first control so that the state of the first and second control switches K1, K2 changes
Switch K1 is disconnected, the second control switch K2 is closed；At the same time, EC 24 can export control signal Ctrl3 to control third control
Switch K3 is disconnected, at this point, the circuit structure of the present embodiment is changed into and structure identical in first embodiment, subsequent process
Also it is basically the same as those in the first embodiment, power supply adaptor 10 starts to be monitored its voltage, electric current and temperature, and is needing early warning
When pre-warning signal S3 is directly output to CPU 21 and GPU 22.
By the above process it is found that the delay time for comparing delayer DL needs to guarantee that EC 24 is completed to power supply adaptor
Power detection process；It is controlled in addition, the opportunity of the output control of EC 24 signal Ctrl3 will also guarantee to export in relatively delayer DL
After signal Ctrl1, Ctrl2 (being concurrently earliest).In general, EC 24 completes the power detection process to power supply adaptor
10ms is needed, in order to reserve sufficient surplus, 100ms can be set by the delay time for comparing delayer DL.
In this embodiment, power supply adaptor and electronic equipment of the invention, in addition to what is described with first embodiment has
Outside beneficial effect, the power of power supply adaptor can also be identified, to the unmatched power supply adaptor of power to user into
Row is reminded, and be ensure that electronic equipments safety, and will not directly power off to mainboard, is improved ease for use.It completes to fit power supply
After the power detection of orchestration, the voltage to power supply adaptor, transient current, average current and temperature can also be automatically switched to
Monitoring, user be not necessarily to the manual switching function, further improve ease for use.
3rd embodiment
The structural schematic diagram of the present embodiment is as shown in figure 5, it is to Fig. 4 under the premise of assurance function integrality into one
Step simplifies.The circuit structure of the present embodiment it can be seen from circuit structure, the change to its improved prior art (Fig. 3)
It is smaller than Fig. 4, it is easier to realize.
The present embodiment eliminates first in second embodiment (Fig. 4) in power supply adaptor 10 relative to second embodiment
It draws high power supply VH1, first draw high third control switch K3 on resistance RH1, the second control switch K2 and mainboard 20.Specifically
Structure repeats no more as shown in figure 5, since the structure generally with second embodiment is identical.
After power supply adaptor 10 is connect with mainboard 20, adapter will be inserted into signal S4 and be sent to EC by charger
24, EC 24 start the power detection process to power supply adaptor immediately after receiving adapter insertion signal S4.
Since the default conditions of the first control switch K1 are closure, when the terminals P 3 of output port 13 and the terminal of plug wire 25
When P3 is connected, the resistance RH2 that draws high dragged down on resistance RL and mainboard 20 inside power supply adaptor 10 is connected in series to form point
Volt circuit, the voltage (i.e. power identification signal S3 ') of node A are transferred to EC 24, and EC 24 can sentence according to the voltage quasi position of node A
Break the power of the power supply adaptor 10.
If the voltage quasi position of node A is lower than predeterminated voltage, illustrate that the power of power supply adaptor 10 is lower than standard configuration value,
EC 24 can notify user's power supply adaptor 10 and mainboard 20 to mismatch by the operating system of electronic equipment at this time, it is proposed that use
Family replacement.If the voltage quasi position of node A is equal to or higher than predeterminated voltage, illustrate that the power of power supply adaptor 10 is standard configuration
Value is higher than standard configuration value, then EC 24 determines that the power supply adaptor 10 can continue to use, without notifying user to replace.
During power of the EC 24 to power supply adaptor detects, this branch pressure voltage of node A is always maintained at one
A higher level, therefore, what the down-scaled signals receiving end of CPU 21 and GPU 22 received is high level, and frequency reducing behaviour is not carried out
Make.
After power supply adaptor 10 is connect with mainboard 20, the voltage for comparing the first input end of delayer DL is node A
Branch pressure voltage, level is higher；The preset value of the reference voltage Vref of its second input terminal input is usually one lower
Level, i.e., after power supply adaptor 10 is connected to mainboard 20, the voltage quasi position of first input end is just than the second input terminal
Voltage quasi position is high, compares delayer DL and starts to start the timing to delay time.
Compare delayer DL and be predetermined a delay time, after the timing warp of delay time, compares delayer DL
Output control signal Ctrl1 is changed into disconnection so that the state of the first control switch K1 changes.At this point, due to comparator C1
The terminals P 3 that the output end of~C4 is connected to output port 13 is thus connected to node A, and therefore, second draws high power supply VH2 and
Two, which draw high resistance RH2, makes the output end of comparator C1~C4 continue to keep high level.
First i.e. in second embodiment, which draws high the function that power supply VH1 and first draws high resistance RH1, is merged into second and draws high
Power supply VH2 and second draws high resistance RH2, to greatly simplifie the circuit in the power supply adaptor 10 of second embodiment, together
When be also simplified the control circuit on mainboard 20.
After comparing delayer DL output control signal Ctrl1, power supply adaptor 10 starts to its voltage, electric current and temperature
It is monitored, and overturns the level of output end when needing early warning, to export low level pre-warning signal S3 to CPU 21
With GPU 22, to control power consumption.
In the present embodiment, the delay time for comparing delayer DL is also required to guarantee that EC 24 is completed to power supply adaptor
Power detection process, for example, can be set to 100ms.
In this embodiment, power supply adaptor and electronic equipment of the invention, in addition to being retouched with the first and second embodiments
Outside the beneficial effect stated, also have the advantages that circuit is simply easily achieved.
The above specific embodiment is only exemplary embodiments of the present invention, it is impossible to be used in limits the present invention, the present invention
Protection scope be defined by the claims.Those skilled in the art can within the spirit and scope of the present invention, to this
Various modifications or equivalent replacements are made in invention, these modifications or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (9)
1. a kind of power supply adaptor, using on an electronic device, including ADC mould group, for converting alternating current to direct current simultaneously
And the voltage of the detection direct current, which is characterized in that the power supply adaptor further include:
Threshold cell is used for output voltage threshold value；
Comparator, two input terminal are connected respectively to the ADC mould group and the threshold cell, are configured to when the direct current
Voltage be lower than the voltage threshold when, export pre-warning signal；Wherein,
Input terminal is provided on the mainboard of the electronic equipment；
The embedded controller being set on the mainboard is connected to the input terminal and is configured to, when the power supply adaptor
When connecting with the mainboard, judge whether the voltage quasi position of the signal of the input terminal input is lower than predeterminated voltage, if
It is then to notify power supply adaptor described in user and the mainboard to mismatch by the operating system of the electronic equipment；
The power supply adaptor further includes comparing delayer, control switch and dragging down resistance, and the output end of the comparator passes through
The control switch that is connected in series and described drag down resistance eutral grounding；The first input end of the relatively delayer is connected to described
The output end of comparator, the second input terminal are connected to reference voltage, and output end is connected to the control terminal of the control switch；
The control switch is configured to normally off, and when its control terminal receives control signal, the control switch is disconnected；Wherein,
The delay time of the relatively delayer is greater than the judgement time of the embedded controller.
2. a kind of power supply adaptor, using on an electronic device, including ADC mould group, for converting alternating current to direct current simultaneously
And the transient current of the detection direct current, which is characterized in that the power supply adaptor further include:
Threshold cell, for exporting instantaneous current threshold；
Comparator, two input terminal are connected respectively to the ADC mould group and the threshold cell, are configured to when the direct current
Transient current be higher than the instantaneous current threshold when, export pre-warning signal；Wherein,
Input terminal is provided on the mainboard of the electronic equipment；
The embedded controller being set on the mainboard is connected to the input terminal and is configured to, when the power supply adaptor
When connecting with the mainboard, judge whether the voltage quasi position of the signal of the input terminal input is lower than predeterminated voltage, if
It is then to notify power supply adaptor described in user and the mainboard to mismatch by the operating system of the electronic equipment；
The power supply adaptor further includes comparing delayer, control switch and dragging down resistance, and the output end of the comparator passes through
The control switch that is connected in series and described drag down resistance eutral grounding；The first input end of the relatively delayer is connected to described
The output end of comparator, the second input terminal are connected to reference voltage, and output end is connected to the control terminal of the control switch；
The control switch is configured to normally off, and when its control terminal receives control signal, the control switch is disconnected；Wherein,
The delay time of the relatively delayer is greater than the judgement time of the embedded controller.
3. a kind of power supply adaptor, using on an electronic device, including ADC mould group, for converting alternating current to direct current simultaneously
And the average current of the detection direct current, which is characterized in that the power supply adaptor further include:
Threshold cell, for exporting average current threshold value；
Comparator, two input terminal are connected respectively to the ADC mould group and the threshold cell, are configured to when the direct current
Average current be higher than the average current threshold value when, export pre-warning signal,
Wherein, the average current is the average value of the transient current in setting time；
Input terminal is provided on the mainboard of the electronic equipment；
The embedded controller being set on the mainboard is connected to the input terminal and is configured to, when the power supply adaptor
When connecting with the mainboard, judge whether the voltage quasi position of the signal of the input terminal input is lower than predeterminated voltage, if
It is then to notify power supply adaptor described in user and the mainboard to mismatch by the operating system of the electronic equipment；
The power supply adaptor further includes comparing delayer, control switch and dragging down resistance, and the output end of the comparator passes through
The control switch that is connected in series and described drag down resistance eutral grounding；The first input end of the relatively delayer is connected to described
The output end of comparator, the second input terminal are connected to reference voltage, and output end is connected to the control terminal of the control switch；
The control switch is configured to normally off, and when its control terminal receives control signal, the control switch is disconnected；Wherein,
The delay time of the relatively delayer is greater than the judgement time of the embedded controller.
4. a kind of power supply adaptor, using on an electronic device, including ADC mould group, for converting alternating current to direct current simultaneously
And the temperature of the detection power supply adaptor, which is characterized in that the power supply adaptor further include:
Threshold cell is used for output temperature threshold value；
Comparator, two input terminal are connected respectively to the ADC mould group and the threshold cell, are configured to when the power supply is suitable
When the temperature of orchestration is higher than the temperature threshold, pre-warning signal is exported；Wherein,
Input terminal is provided on the mainboard of the electronic equipment；
The embedded controller being set on the mainboard is connected to the input terminal and is configured to, when the power supply adaptor
When connecting with the mainboard, judge whether the voltage quasi position of the signal of the input terminal input is lower than predeterminated voltage, if
It is then to notify power supply adaptor described in user and the mainboard to mismatch by the operating system of the electronic equipment；
The power supply adaptor further includes comparing delayer, control switch and dragging down resistance, and the output end of the comparator passes through
The control switch that is connected in series and described drag down resistance eutral grounding；The first input end of the relatively delayer is connected to described
The output end of comparator, the second input terminal are connected to reference voltage, and output end is connected to the control terminal of the control switch；
The control switch is configured to normally off, and when its control terminal receives control signal, the control switch is disconnected；Wherein,
The delay time of the relatively delayer is greater than the judgement time of the embedded controller.
5. power supply adaptor described in any one of -4 according to claim 1, which is characterized in that the threshold cell is deposit
Device, memory or voltage source.
6. power supply adaptor described in any one of -4 according to claim 1, which is characterized in that the pre-warning signal is low electricity
It is flat.
7. power supply adaptor according to claim 6, which is characterized in that the output end of the comparator is by drawing high resistance
It is connected to and draws high power supply, the output level overturning of the comparator when exporting the pre-warning signal.
8. a kind of electronic equipment for being applicable in power supply adaptor of any of claims 1-4, which is characterized in that
The power supply adaptor further includes the output terminal for exporting the pre-warning signal；
It is provided on the mainboard of the electronic equipment for being electrically connected with the output terminal to input the defeated of the pre-warning signal
Enter terminal, draw high resistance and draw high power supply, the input terminal by it is described draw high resistance and be connected to described draw high power supply；
The CPU and/or GPU being set on the mainboard are connected to the input terminal to receive the pre-warning signal and configure
To execute frequency redution operation when receiving the pre-warning signal.
9. a kind of electronic equipment for being applicable in power supply adaptor as claimed in claim 7, which is characterized in that
The power supply adaptor includes the output terminal for exporting the pre-warning signal；
The mainboard of the electronic equipment includes for being electrically connected with the output terminal to input the input terminal of the pre-warning signal
Son；
The CPU and/or GPU being set on the mainboard are connected to the input terminal to receive the pre-warning signal and configure
To execute frequency redution operation when receiving the pre-warning signal.
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| CN201610200233.5A CN105763074B (en) | 2016-03-30 | 2016-03-30 | Power supply adaptor and the electronic equipment for being applicable in the power supply adaptor |
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| CN107817886B (en) * | 2017-11-10 | 2021-08-17 | 合肥联宝信息技术有限公司 | Power supply control method and electronic equipment |
| CN110032263B (en) * | 2019-04-15 | 2021-06-29 | 苏州浪潮智能科技有限公司 | Server and power-down protection circuit thereof |
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| JP2006050686A (en) * | 2004-07-30 | 2006-02-16 | Sony Corp | Battery state detector and charger having it |
| CN201247969Y (en) * | 2008-09-02 | 2009-05-27 | 深圳华为通信技术有限公司 | Charger |
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