CN107562169A - A kind of overcurrent protection module and method for preventing that NVME backboards from burning - Google Patents
A kind of overcurrent protection module and method for preventing that NVME backboards from burning Download PDFInfo
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- CN107562169A CN107562169A CN201710999879.9A CN201710999879A CN107562169A CN 107562169 A CN107562169 A CN 107562169A CN 201710999879 A CN201710999879 A CN 201710999879A CN 107562169 A CN107562169 A CN 107562169A
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Abstract
The invention discloses a kind of overcurrent protection module and method for preventing NVME backboards from burning; for configuring in NVME backboards power supply link; its structure includes metal-oxide-semiconductor, control chip, overcurrent protection resistance; the overcurrent protection module is divided into two branch roads in the voltage input end of NVME backboards power supply link; wherein a branch road is connected to voltage output end after metal-oxide-semiconductor; another branch road is grounded after then sequentially passing through control chip, overcurrent protection resistance, and the control chip is also connected with above-mentioned metal-oxide-semiconductor.A kind of overcurrent protection module for preventing NVME backboards from burning and method of the present invention is compared with prior art; increase overcurrent protection module on 12V the and 3V3 operating voltage links of NVME hard disks; realize the overcurrent protection function of NVME hard disk operational voltages; prevent that reason causes voltage short circuit and causes to burn plate problem caused by electric current is excessive, temperature is too high because connector contact is bad, PCB is bad etc.; it is practical; it is applied widely, it is easy to spread.
Description
Technical field
The present invention relates to field of computer technology, specifically a kind of overcurrent protection module for preventing NVME backboards from burning
And method.
Background technology
As big data, cloud service deepen continuously every field, the storage capacity of server turns into representative server
One important indicator of performance, and the most strong embodiment of the storage capacity of server is the capacity and number of internal integrated hard disk
Mesh.At this stage, with the continuous lifting of hard drive storage capacities and read-write data capability, sent out from original SATA hard disc, SAS hard disks
The NVME hard disks of exhibition till now, the lifting of the storage capacity of single hard disk has developed to a stage slowly lifted, so energy
The index for really embodying server storage ability is to be internally integrated the number of hard disk.
To lift server storage capacity itself, required NVME hard disks are generally concentrated on NVME backboards, are realized and are concentrated
Power supply, centralized management so that server internal space obtains most reasonably utilizing.NVME backboards are typically from single port backboard to 48 mouthfuls
Backboard has design, and this depends on the space size of server internal.
Along with a large amount of uses of NVME backboards, produced problem is also continuously increased therewith.Wherein：The problem of most serious is
NVME backboard burnout problems.If NVME backboard burnout problems occur in use for server terminal client, service will result directly in
The even more serious thing of device damage, loss of data.Hard disk backboard design rationality, prevent hard disk backboard from burning as server
The problem of research and development engineer more and more pays close attention to.
In existing NVME back plate designs scheme, 12V voltages and 3V3 voltages needed for NVME hard disks are directly from mainboard or electricity
Source plate provides, and intermediate path does not increase any protection, as depicted in figs. 1 and 2.Fig. 1 is 12V power voltage supplies path, input voltage
For P12V, Fig. 2 is 3V3 power voltage supply circuits, input voltage P3V3.
In existing design, NVME backboards are directly fed to NVME hard disks after mainboard or power panel power taking, if NVME
Hard drive internal short circuit or the bad generation short circuits of NVME backboards PCB.
Current design can not realize power-off protection, and NVME backboards may be caused to burn phenomenon.Such as Fig. 3 institutes
There are many kinds the reason for showing, causing NVME backboards to burn, and it is NVME backboard electric currents that these reasons most directly embody after occurring
It is excessive, therefore, need a kind of new, the relatively low support 100G networks of cost technology badly.
The content of the invention
The technical assignment of the present invention is to be directed to above weak point, there is provided a kind of overcurrent protection for preventing NVME backboards from burning
Module and method.
A kind of overcurrent protection module for preventing NVME backboards from burning, for configuring in NVME backboards power supply link, it is tied
Structure includes metal-oxide-semiconductor, control chip, overcurrent protection resistance, control source of the overcurrent protection module in NVME backboards power supply link
End is divided into two branch roads, wherein a branch road is connected to voltage output end after metal-oxide-semiconductor, another branch road then sequentially passes through control
It is grounded after chip, overcurrent protection resistance, the control chip is also connected with above-mentioned metal-oxide-semiconductor.
Control source VCC pins, gate control signal input Gate pins, current limit are configured with the control chip
Thresholding adjusts Ilim pins, wherein VCC pins connection voltage input end, Gate pins connection metal-oxide-semiconductor, Ilim pins connection excessively stream
Protective resistance.
The metal-oxide-semiconductor uses P-channel metal-oxide-semiconductor, and its grid connection control chip, source electrode connection voltage input end, drain electrode connect
Connect voltage output end.
A kind of over-current protection method for preventing NVME backboards from burning, its implementation process are：
First, overcurrent protection resistance is chosen according to NVME backboard situations first；
2nd, on NVME backboards power supply link, the above-mentioned overcurrent protection module for including overcurrent protection resistance is increased；
3rd, when NVME backboards occur abnormal, overcurrent protection module starts cut-out supply voltage, prevents backboard from burning.
NVME backboard situations in the step 1 refer to be connected to NVME hard disks quantity on backboard, supply voltage, i.e.,
When NVME hard disks use 12V or 3.3V operating voltages, its corresponding over-current protection point value is different, and the over-current protection point is excessively stream
The maximum current value of protection, its calculation formula are Iocp=N/Rlim, and wherein Iocp is the overcurrent protection of control chip setting
Point, Rlim be overcurrent protection resistance numerical value, N be control chip coefficient, this coefficient by selected control chip model
Determine, corresponding, the resistance of overcurrent protection resistance determines according to the value of over-current protection point.
When the NVME hard disk operational voltages use 12V voltages, on NVME backboards power supply link, an excessively stream is configured first
Protection module, is then divided into M bar branch roads by the output end of the overcurrent protection module, and excessively stream guarantor is reconfigured on every branch road
NVME hard disks are accessed after protecting module, the M is NVME hard disk numbers.
When NVME hard disk backboards input voltage is 12V, the 12V voltage maximum operating currenbts needed for single NVME hard disks
For 3A, over-current protection point is arranged to the 1.5 of single NVME hard disks maximum operating currenbt by the overcurrent protection module on every branch road
Times, i.e. 4.5A；Corresponding, over-current protection point is arranged to M* by the overcurrent protection module first passed around for connecting voltage input end
4.5A, M are NVME hard disk numbers.
When the NVME hard disk operational voltages use 3V3 voltages, on NVME backboards power supply link, an overcurrent protection is configured
Module, the output end of the overcurrent protection module is then divided into M bar branch roads, is respectively connecting to NVME hard disks, the M is that NVME is hard
Disk number.
When NVME hard disk backboards input voltage is 3.3V, the 3V3 voltage maximum operating currenbts needed for single NVME hard disks
For 20mA, over-current protection point is arranged to M*0.3 A by overcurrent protection module, and the M is NVME hard disk numbers.
The process of progress overcurrent protection is in the step 3：When operating current is more than the overcurrent protection of control chip setting
During point, the Gate pins output low level of control chip, metal-oxide-semiconductor shut-off, output voltage 0；When operating current is less than control core
During the over-current protection point of piece setting, the Gate pins output high level of control chip, metal-oxide-semiconductor conducting, output voltage, which is equal to, to be inputted
Voltage.
The present invention a kind of overcurrent protection module for preventing NVME backboards from burning and method compared to the prior art, have with
Lower beneficial effect：
A kind of overcurrent protection module and method for preventing that NVME backboards from burning of the present invention, worked in the 12V and 3V3 of NVME hard disks
Increase overcurrent protection module on voltage level link, realize the overcurrent protection function of NVME hard disk operational voltages, prevent because connector connects
Reason of touching that bad, PCB is bad etc. causes voltage short circuit and causes to burn plate problem caused by electric current is excessive, temperature is too high, realizes
Overcurrent protection when backboard occurs abnormal, supply voltage is cut off, prevents NVME backboards from burning the generation of phenomenon from basic reason,
It is practical, it is applied widely, it is easy to spread.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Accompanying drawing 1 is schematic diagram when existing NVME hard disks use 12V power voltage supplies.
Accompanying drawing 2 is schematic diagram when existing NVME hard disks use 3.3V power voltage supplies.
Accompanying drawing 3 is the reason for existing NVME hard disk backboards burn schematic diagram.
Accompanying drawing 4 is overcurrent protection module schematic diagram of the invention.
Overcurrent protection module connection diagram when accompanying drawing 5 uses 12V power voltage supplies for NVME hard disks in the present invention.
Overcurrent protection module connection diagram when accompanying drawing 6 uses 3.3V power voltage supplies for NVME hard disks in the present invention.
Embodiment
In order that those skilled in the art more fully understand the solution of the present invention, with reference to embodiment to this
Invention is described in further detail.Obviously, described embodiment is only part of the embodiment of the present invention, rather than all
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
As shown in figure 4, a kind of overcurrent protection module for preventing NVME backboards from burning, for configuring in NVME backboards power supply chain
Lu Shang, its structure include metal-oxide-semiconductor, control chip, overcurrent protection resistance, and the overcurrent protection module is in NVME backboards power supply link
Voltage input end is divided into two branch roads, wherein a branch road is connected to voltage output end after metal-oxide-semiconductor, another branch road then order
It is grounded after control chip, overcurrent protection resistance, the control chip is also connected with above-mentioned metal-oxide-semiconductor.
Control source VCC pins, gate control signal input Gate pins, current limit are configured with the control chip
Thresholding adjusts Ilim pins, wherein VCC pins connection voltage input end, Gate pins connection metal-oxide-semiconductor, Ilim pins connection excessively stream
Protective resistance.
The metal-oxide-semiconductor uses P-channel metal-oxide-semiconductor, and its grid connection control chip, source electrode connection voltage input end, drain electrode connect
Connect voltage output end.
A kind of over-current protection method for preventing NVME backboards from burning, by the way that rationally increase current limliting is protected on NVME backboards power supply link
Point is protected, temperature rise problem caused by preventing electric current excessive, realizes overcurrent protection when backboard occurs abnormal, cut-out power supply electricity
Pressure, fundamentally prevents the generation of backboard burn observations.
Its implementation process is：
First, overcurrent protection resistance is chosen according to NVME backboard situations first；
2nd, on NVME backboards power supply link, the above-mentioned overcurrent protection module for including overcurrent protection resistance is increased；
3rd, when NVME backboards occur abnormal, overcurrent protection module starts cut-out supply voltage, prevents backboard from burning.
NVME hard disk operational voltages include 12V voltages and 3V3 voltages, wherein the 12V voltages needed for single NVME hard disks are most
Big operating current is 3A, and the 3V3 voltages maximum operating currenbt needed for single NVME hard disks is 20mA（It is hard that this data refers to NVME
Disk specifications）, to realize NVME backboards occur it is abnormal when overcurrent protection, on 12V voltages and 3V3 power voltage supply links
Overcurrent protection is needed to set.
NVME backboard situations in the step 1 refer to be connected to NVME hard disks quantity on backboard, supply voltage, i.e.,
When NVME hard disks use 12V or 3.3V operating voltages, its corresponding over-current protection point value is different, and the over-current protection point is excessively stream
The maximum current value of protection, its calculation formula are Iocp=N/Rlim, and wherein Iocp is the overcurrent protection of control chip setting
Point, Rlim be overcurrent protection resistance numerical value, N be control chip coefficient, this coefficient by selected control chip model
Determine, corresponding, the resistance of overcurrent protection resistance determines according to the value of over-current protection point.
When the NVME hard disk operational voltages use 12V voltages, on NVME backboards power supply link, an excessively stream is configured first
Protection module, is then divided into M bar branch roads by the output end of the overcurrent protection module, and excessively stream guarantor is reconfigured on every branch road
NVME hard disks are accessed after protecting module, the M is NVME hard disk numbers.
When NVME hard disk backboards input voltage is 12V, the 12V voltage maximum operating currenbts needed for single NVME hard disks
For 3A, over-current protection point is arranged to the 1.5 of single NVME hard disks maximum operating currenbt by the overcurrent protection module on every branch road
Times, i.e. 4.5A；Corresponding, over-current protection point is arranged to M* by the overcurrent protection module first passed around for connecting voltage input end
4.5A, M are NVME hard disk numbers.
When the NVME hard disk operational voltages use 3V3 voltages, on NVME backboards power supply link, an overcurrent protection is configured
Module, the output end of the overcurrent protection module is then divided into M bar branch roads, is respectively connecting to NVME hard disks, the M is that NVME is hard
Disk number.
When NVME hard disk backboards input voltage is 3.3V, the 3V3 voltage maximum operating currenbts needed for single NVME hard disks
For 20mA, over-current protection point is arranged to M*0.3 A by overcurrent protection module, and the M is NVME hard disk numbers.
The process of progress overcurrent protection is in the step 3：When operating current is more than the overcurrent protection of control chip setting
During point, the Gate pins output low level of control chip, metal-oxide-semiconductor shut-off, output voltage 0；When operating current is less than control core
During the over-current protection point of piece setting, the Gate pins output high level of control chip, metal-oxide-semiconductor conducting, output voltage, which is equal to, to be inputted
Voltage.
As shown in Figure 5, in each NVME hard-disk interfaces 12V control sources position increase Efuse protections, i.e. overcurrent protection
Module, the overcurrent protection to each NVME hard-disk interfaces is realized, prevented because NVME hard drive internals are short-circuit or artificial illegal operation
Caused by burn plate problem；In the 12V voltage input ends increase Efuse protections of whole NVME backboards, realize to whole NVME backboards
Overcurrent protection function, prevent because pcb board technique is bad or the problems such as backboard component damage caused by burn plate problem.
NVME hard disk backboards input voltage is P12V, P12V by being converted to P12V_NVME after first order Efuse0,
P12V_NVME is by being converted to the 12V voltages needed for each NVME hard disks after the Efuse1 at each NVME hard-disk interfaces.Wherein
Efuse1 over-current protection point is arranged to 1.5 times of single NVME hard disks maximum operating currenbt, i.e. 4.5A.Efuse0 excessively stream is protected
Shield point is arranged to M*4.5, and M is NVME hard disk numbers.
As shown in Figure 6, because the 3V3 voltage power supply electric currents needed for each NVME hard disks are smaller, NVME backboards are triggered
It is relatively low to burn probability, and considers from cost-effective angle, whole NVME backboards need to only increase 3V3 voltages over-current protection point all the way
Set.The 3V3 input voltages of NVME backboards are P3V3, and P3V3_NVME is converted to by Efuse2, are all on NVME backboards
Hard disk provides 3V3 voltages.Excessively stream design point may be designed as M*0.3.
By embodiment above, the those skilled in the art can readily realize the present invention.Herein
Apply specific case to be set forth the principle and embodiment of the present invention, the explanation of above example is only intended to help
Understand the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, do not taking off
On the premise of from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this
In invention scope of the claims.
Claims (10)
1. a kind of overcurrent protection module for preventing NVME backboards from burning, it is characterised in that for configuring in NVME backboards power supply chain
Lu Shang, its structure include metal-oxide-semiconductor, control chip, overcurrent protection resistance, and the overcurrent protection module is in NVME backboards power supply link
Voltage input end is divided into two branch roads, wherein a branch road is connected to voltage output end after metal-oxide-semiconductor, another branch road then order
It is grounded after control chip, overcurrent protection resistance, the control chip is also connected with above-mentioned metal-oxide-semiconductor.
A kind of 2. overcurrent protection module for preventing NVME backboards from burning according to claim 1, it is characterised in that the control
Control source VCC pins, gate control signal input Gate pins, current limit thresholding adjustment Ilim pipes are configured with coremaking piece
Pin, wherein VCC pins connect voltage input end, Gate pins connection metal-oxide-semiconductor, Ilim pins connection overcurrent protection resistance.
3. a kind of overcurrent protection module for preventing NVME backboards from burning according to claim 1, it is characterised in that described
Metal-oxide-semiconductor uses P-channel metal-oxide-semiconductor, its grid connection control chip, source electrode connection voltage input end, drain electrode connection voltage output end.
4. a kind of over-current protection method for preventing NVME backboards from burning, it is characterised in that its implementation process is：
First, overcurrent protection resistance is chosen according to NVME backboard situations first；
2nd, on NVME backboards power supply link, the above-mentioned overcurrent protection module for including overcurrent protection resistance is increased；
3rd, when NVME backboards occur abnormal, overcurrent protection module starts cut-out supply voltage, prevents backboard from burning.
A kind of 5. over-current protection method for preventing NVME backboards from burning according to claim 4, it is characterised in that the step
NVME backboard situations in rapid one refer to be connected to NVME hard disks quantity on backboard, supply voltage, i.e. NVME hard disks use 12V
Or during 3.3V operating voltages, its corresponding over-current protection point value is different, and the over-current protection point is the maximum current of overcurrent protection
Value, its calculation formula are Iocp=N/Rlim, and wherein Iocp is the over-current protection point of control chip setting, and Rlim protects for excessively stream
The numerical value of resistance is protected, N is the coefficient of control chip, and this coefficient is determined by the model of selected control chip, corresponding, mistake
The resistance for flowing protective resistance determines according to the value of over-current protection point.
6. a kind of over-current protection method for preventing NVME backboards from burning according to claim 5, it is characterised in that described
When NVME hard disk operational voltages use 12V voltages, on NVME backboards power supply link, an overcurrent protection module is configured first, so
The output end of the overcurrent protection module is divided into M bar branch roads afterwards, an overcurrent protection module is reconfigured on every branch road and is followed by
Enter NVME hard disks, the M is NVME hard disk numbers.
7. a kind of over-current protection method for preventing NVME backboards from burning according to claim 6, it is characterised in that in NVME
When hard disk backboard input voltage is 12V, the 12V voltages maximum operating currenbt needed for single NVME hard disks is 3A, on every branch road
Overcurrent protection module over-current protection point is arranged to 1.5 times of single NVME hard disks maximum operating currenbt, i.e. 4.5A；It is corresponding
, over-current protection point is arranged to M*4.5A by the overcurrent protection module first passed around for connecting voltage input end, and M is NVME hard disks
Number.
8. a kind of over-current protection method for preventing NVME backboards from burning according to claim 5, it is characterised in that described
When NVME hard disk operational voltages use 3V3 voltages, on NVME backboards power supply link, an overcurrent protection module is configured, then will
The output end of the overcurrent protection module is divided into M bar branch roads, is respectively connecting to NVME hard disks, and the M is NVME hard disk numbers.
9. a kind of over-current protection method for preventing NVME backboards from burning according to claim 8, it is characterised in that in NVME
When hard disk backboard input voltage is 3.3V, the 3V3 voltages maximum operating currenbt needed for single NVME hard disks is 20mA, overcurrent protection
Over-current protection point is arranged to M*0.3 A by module, and the M is NVME hard disk numbers.
10. according to a kind of any described over-current protection methods for preventing NVME backboards from burning of claim 4-9, its feature exists
In the process that overcurrent protection is carried out in the step 3 is：When operating current is more than the over-current protection point of control chip setting,
The Gate pins output low level of control chip, metal-oxide-semiconductor shut-off, output voltage 0；When operating current is set less than control chip
Over-current protection point when, the Gate pins output high level of control chip, metal-oxide-semiconductor conducting, output voltage is equal to input voltage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710999879.9A CN107562169A (en) | 2017-10-24 | 2017-10-24 | A kind of overcurrent protection module and method for preventing that NVME backboards from burning |
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| CN201710999879.9A CN107562169A (en) | 2017-10-24 | 2017-10-24 | A kind of overcurrent protection module and method for preventing that NVME backboards from burning |
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| CN106502362A (en) * | 2016-10-21 | 2017-03-15 | 郑州云海信息技术有限公司 | A kind of electric supply installation of four component server and its method for designing |
| CN106648013A (en) * | 2016-09-28 | 2017-05-10 | 华为技术有限公司 | Overcurrent point configuration method and apparatus, and overcurrent protection apparatus |
| CN206249234U (en) * | 2016-12-09 | 2017-06-13 | 郑州云海信息技术有限公司 | A kind of construction for electricity for preventing hard disk backboard from burning |
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2017
- 2017-10-24 CN CN201710999879.9A patent/CN107562169A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105119661A (en) * | 2015-07-20 | 2015-12-02 | 上海斐讯数据通信技术有限公司 | Multichannel load sharing power supply system |
| CN106648013A (en) * | 2016-09-28 | 2017-05-10 | 华为技术有限公司 | Overcurrent point configuration method and apparatus, and overcurrent protection apparatus |
| CN106502362A (en) * | 2016-10-21 | 2017-03-15 | 郑州云海信息技术有限公司 | A kind of electric supply installation of four component server and its method for designing |
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Application publication date: 20180109 |