CN107479679A - The power supply protection method and device of a kind of hard disk backboard - Google Patents
The power supply protection method and device of a kind of hard disk backboard Download PDFInfo
- Publication number
- CN107479679A CN107479679A CN201710652241.8A CN201710652241A CN107479679A CN 107479679 A CN107479679 A CN 107479679A CN 201710652241 A CN201710652241 A CN 201710652241A CN 107479679 A CN107479679 A CN 107479679A
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- Prior art keywords
- hard disk
- ocp
- circuit
- backboard
- place
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Emergency Protection Circuit Devices (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Sources (AREA)
Abstract
A kind of power supply protection method of hard disk backboard, comprises the following steps：Determine the quantity N of hard disk in place on the hard disk backboard；According to the quantity N of the hard disk in place, the first over-current protection point OCP, the first over-current protection point OCP corresponding to hard disk quantity N is set to be used for overcurrent protection of the triggering to the hard disk backboard, N is positive integer.A kind of power supply protection device of hard disk backboard, including the CPLD being arranged on hard disk backboard, for detecting whether hard disk has signal in place, judge the number of hard disk in place, and control to adjust the break-make of circuit；Circuit is adjusted, including a parallelled circuit and Power IC OCP set pin, for adjusting the size of overcurrent protection value at OCP points；The input of the CPLD chips is connected with hard disk, and the output end of CPLD chips is connected with adjusting the input of circuit.
Description
Technical field
The present invention relates to power supply protection technical field, the power supply protection method and dress of specifically a kind of hard disk backboard
Put.
Background technology
The general hard disk that can all configure polylith hot plug maintenance in server, and these hard disks generally all pass through hard disk backboard
Carry out hot plug maintenance.Requirement of the server to storage at present increasingly becomes big, and the hard disk number of unit also becomes more therewith.Therefore,
Requirement to the reliability of backboard power supply also uprises therewith.Probably made if design is improper when there is abnormal (such as excessively stream)
Burnt out into backboard or hard disk, influence the business on line.
12V or 5V voltage only has overcurrent protection, and the OCP in input on present hard discs backboard
(Overcurrent Protection overcurrent protections) point can only be designed by the situation of full configuration hard disk on the backboard.Work as hard disk backboard
On hard disk be discontented with timing, OCP points relative to hard disk number mismatch.(hard disk or the hard disk back of the body have been jeopardized when electric current is too high
Plate) when, overcurrent protection cannot be effectively triggered, can thus damage hard disk or hard disk backboard.
The content of the invention
It is an object of the invention to provide a kind of power supply protection method of hard disk backboard and device, for solving when hard disk is carried on the back
Plate is discontented with timing, it is impossible to effectively triggers overcurrent protection, the problem of damaging hard disk or hard disk backboard.
The technical scheme adopted by the invention to solve the technical problem is that：A kind of power supply protection method of hard disk backboard, bag
Include：
Determine the quantity N of hard disk in place on the hard disk backboard；
According to the quantity N of the hard disk in place, the first over-current protection point OCP is set corresponding to hard disk quantity N, described first
Over-current protection point OCP is used to trigger the overcurrent protection to the hard disk backboard, and N is positive integer.
Further, methods described also includes：
When hard disk number in place is changed into M on the hard disk back side, the second excessively stream corresponding to the hard disk number M is set to protect
Protect point OCP, the 2nd OCP and be used for overcurrent protection of the triggering to the hard disk backboard, M is positive integer, and N and M is different.
Further, judging the method for the number of hard disk in place includes：Utilize the CPLD detection hard disks on hard disk backboard
HDDx_PRESENT signals judge hard disk number on present hard discs backboard.
Further, the number of HDDx_PRESENT signals and hard disk corresponds.
Further, the hard disk number is corresponding with OCP.
A kind of power supply protection device of hard disk backboard, using described method, including hard disk backboard, it is arranged on hard disk backboard
On multiple hard disks, in addition to the CPLD being arranged on hard disk backboard, for detecting whether hard disk has signal in place, judge in place
The number of hard disk, and control to adjust the break-make of circuit；With,
Circuit is adjusted, including a parallelled circuit and Power IC OCP set pin, for adjusting overcurrent protection at OCP points
The size of value；
The input of the CPLD chips is connected with hard disk, the output end of CPLD chips and the input phase for adjusting circuit
Even.
Further, described parallelled circuit is composed in parallel by multichannel sequential circuit, the input and CPLD of parallelled circuit
The output end of chip is connected, and the output end of parallelled circuit sets the input of pin to be connected with Power IC OCP, Power IC
OCP sets the output end of pin to be connected with hard disk backboard.
Further, described sequential circuit includes metal-oxide-semiconductor and resistance, and the drain electrode of metal-oxide-semiconductor is connected with one end of resistance,
The grid of metal-oxide-semiconductor is the input of parallelled circuit, and the source electrode of the metal-oxide-semiconductor of multichannel sequential circuit is connected and is grounded, multichannel concatenation electricity
The other end of the resistance on road is connected and is the output end of parallelled circuit.
What the above content of the invention provided is only the statement of the embodiment of the present invention, rather than invention is in itself.
The effect provided in the content of the invention is only the effect of embodiment, rather than whole effects that invention is all, above-mentioned
A technical scheme in technical scheme has the following advantages that or beneficial effect：
Judge hard disk number on present hard discs backboard using the signal in place of CPLD detections hard disk on hard disk backboard, dynamic
Adjustment 12V or 5V voltage protections circuit set OCP resistance, so as to realize that OCP points and hard disk number match.It can guarantee that
Hard disk backboard power supply OCP dynamic regulation so that OCP points can on perfect matching present hard discs backboard hard disk in place number,
When hard disk or hard disk backboard occur abnormal, overcurrent protection can be timely triggered.
Brief description of the drawings
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention；
Fig. 2 is the electrical block diagram of the embodiment of the present invention.
Embodiment
In order to the technical characterstic of clear explanation this programme, below by embodiment, and its accompanying drawing is combined, to this
Invention is described in detail.Following disclosure provides many different embodiments or example is used for realizing the different knots of the present invention
Structure.In order to simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relation between various embodiments are discussed and/or set.It should be noted that part illustrated in the accompanying drawings is not necessarily to scale
Draw.Present invention omits the description to known assemblies and treatment technology and process to avoid being unnecessarily limiting the present invention.
Embodiments of the invention are illustrated with 4 mouthfuls of hard disk backboards.
As shown in figure 1, a kind of power supply protection method of hard disk backboard, comprises the following steps：
Step 1) determines the quantity N of hard disk in place on hard disk backboard；
Step 2) sets the first over-current protection point OCP corresponding to hard disk quantity N, the first mistake according to the quantity N of hard disk in place
Stream protection point OCP is used to trigger the overcurrent protection to the hard disk backboard, and N is positive integer.
Method can also include：When hard disk number in place is changed into M on the hard disk back side, the is set corresponding to hard disk number M
Two over-current protection point OCP, the 2nd OCP are used for overcurrent protection of the triggering to the hard disk backboard, and M is positive integer, and N and M is different.
The quantity N of hard disk in place method is judged in step 1) operation to be included：Utilize the CPLD on hard disk backboard
The HDDx_PRESENT letters of (Complex Programmable Logic Device CPLDs) detection hard disk
Number (signal in place) judges hard disk number on present hard discs backboard.
The number of HDDx_PRESENT signals and hard disk corresponds, and hard disk number is corresponding with OCP.
After CPLD receives hard disk signal in place (HDDx_PRESENT), CPLD judges the number of hard disk in place, by hard
Disk number CPLD controls OCP signal (SEL_OCPx), and whole control process relies on CPLD logic, its logic true value table such as table
Shown in 1：
Table 1
HDDx_PRESENT signals are that low level is effective, i.e., the signal is just changed into from high level after hard disk is inserted into hard disk mouth
Low level.SEL_OCPx signals are that high level is effective, when CPLD detects the signal in place of hard disk, make corresponding SEL_OCPx signals
Draw high, high level is changed into from low level.
High level, corresponding Mos pipes Qx conductings are changed into according to SEL_OCPx signals so that corresponding resistance Rx accesses
To Power IC OCP, pin is set；So as to change its over-current protection point.It is specific as shown in table 2：
| Hard disk number | SEL_OCPx puts high RST | OCP points |
| 0 | SEL_OCP3 | OCP3 |
| 1 | SEL_OCP0 | OCP0 |
| 2 | SEL_OCP1 | OCP1 |
| 3 | SEL_OCP2 | OCP2 |
| 4 | SEL_OCP3 | OCP3 |
Table 2
As shown in Fig. 2 a kind of power supply protection device of hard disk backboard, including hard disk backboard, it is arranged on hard disk backboard
Multiple hard disks, it is characterised in that also include the CPLD being arranged on hard disk backboard, for detecting whether hard disk has signal in place,
Judge the number of hard disk in place, and control to adjust the break-make of circuit；With,
Circuit is adjusted, including a parallelled circuit and Power IC OCP set pin, for adjusting overcurrent protection at OCP points
The size of value；
The input of CPLD chips is connected with hard disk, and the output end of CPLD chips is connected with adjusting the input of circuit.
Parallelled circuit is composed in parallel by multichannel sequential circuit, the input of parallelled circuit and the output end phase of CPLD chips
Even, the output end of parallelled circuit sets the input of pin to be connected with Power IC OCP, and Power IC OCP set pin
Output end is connected with hard disk backboard.
Sequential circuit includes metal-oxide-semiconductor and resistance, and the drain electrode of metal-oxide-semiconductor is connected with one end of resistance, and the grid of metal-oxide-semiconductor is and connect
The input of circuit, the source electrode of the metal-oxide-semiconductor of multichannel sequential circuit are connected and are grounded, the other end phase of the resistance of multichannel sequential circuit
Even and it is the output end of parallelled circuit.
Simply the preferred embodiment of the present invention described above, for those skilled in the art,
Without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also regarded as this hair
Bright protection domain.
Claims (8)
- A kind of 1. power supply protection method of hard disk backboard, it is characterised in that including：Determine the quantity N of hard disk in place on the hard disk backboard；According to the quantity N of the hard disk in place, the first over-current protection point OCP corresponding to hard disk quantity N, first excessively stream are set Point OCP is protected to be used to trigger the overcurrent protection to the hard disk backboard, N is positive integer.
- 2. according to the method for claim 1, it is characterised in that methods described also includes：When hard disk number in place is changed into M on the hard disk back side, the second over-current protection point corresponding to the hard disk number M is set OCP, the 2nd OCP are used to trigger the overcurrent protection to the hard disk backboard, and M is positive integer, and N and M is different.
- 3. method according to claim 1 or 2, it is characterized in that, judging the method for the number of hard disk in place includes：Using hard The HDDx_PRESENT signals of CPLD detection hard disks on disk backboard judge hard disk number on present hard discs backboard.
- 4. method according to claim 3, it is characterized in that, a pair of the number 1 of HDDx_PRESENT signals and hard disk Should.
- 5. according to the method for claim 4, it is characterised in that the hard disk number is corresponding with OCP.
- 6. a kind of power supply protection device of hard disk backboard, utilizes the method described in claim 1 to 5 any one, including hard disk Backboard, the multiple hard disks being arranged on hard disk backboard, it is characterised in that also include the CPLD being arranged on hard disk backboard, be used for Whether detection hard disk has signal in place, judges the number of hard disk in place, and control to adjust the break-make of circuit；With,Circuit is adjusted, including a parallelled circuit and Power IC OCP set pin, for adjusting overcurrent protection value at OCP points Size；The input of the CPLD chips is connected with hard disk, and the output end of CPLD chips is connected with adjusting the input of circuit.
- 7. device according to claim 6, it is characterised in that described parallelled circuit is by multichannel sequential circuit parallel connection group Into the input of parallelled circuit is connected with the output end of CPLD chips, and output end and the Power IC OCP of parallelled circuit are set The input of pin is connected, and Power IC OCP set the output end of pin to be connected with hard disk backboard.
- 8. device according to claim 7, it is characterised in that described sequential circuit includes metal-oxide-semiconductor and resistance, metal-oxide-semiconductor Drain electrode be connected with one end of resistance, the grid of metal-oxide-semiconductor is the input of parallelled circuit, the source of the metal-oxide-semiconductor of multichannel sequential circuit Extremely it is connected and is grounded, the other end of the resistance of multichannel sequential circuit is connected and is the output end of parallelled circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652241.8A CN107479679A (en) | 2017-08-02 | 2017-08-02 | The power supply protection method and device of a kind of hard disk backboard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652241.8A CN107479679A (en) | 2017-08-02 | 2017-08-02 | The power supply protection method and device of a kind of hard disk backboard |
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| CN107479679A true CN107479679A (en) | 2017-12-15 |
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| CN201710652241.8A Pending CN107479679A (en) | 2017-08-02 | 2017-08-02 | The power supply protection method and device of a kind of hard disk backboard |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033890A (en) * | 2018-06-26 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of device for avoiding hard disk backboard damage that PCB is caused to catch fire |
| CN112000190A (en) * | 2020-08-21 | 2020-11-27 | 苏州浪潮智能科技有限公司 | Power supply control circuit, server hard disk backboard and power supply circuit thereof |
| CN112462912A (en) * | 2020-11-20 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Server power supply method and related equipment |
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| US20090195953A1 (en) * | 2008-02-01 | 2009-08-06 | Chia-Min Chen | Power IC with an over-current protection circuit and method thereof |
| CN102609065A (en) * | 2011-01-19 | 2012-07-25 | 鸿富锦精密工业（深圳）有限公司 | Over-current protection device |
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| US20090195953A1 (en) * | 2008-02-01 | 2009-08-06 | Chia-Min Chen | Power IC with an over-current protection circuit and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033890A (en) * | 2018-06-26 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of device for avoiding hard disk backboard damage that PCB is caused to catch fire |
| CN112000190A (en) * | 2020-08-21 | 2020-11-27 | 苏州浪潮智能科技有限公司 | Power supply control circuit, server hard disk backboard and power supply circuit thereof |
| CN112000190B (en) * | 2020-08-21 | 2022-07-19 | 苏州浪潮智能科技有限公司 | Power supply control circuit, server hard disk backboard and power supply circuit thereof |
| CN112462912A (en) * | 2020-11-20 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Server power supply method and related equipment |
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Application publication date: 20171215 |