CN207474076U - Hard disk protection circuit and solid state disk - Google Patents
Hard disk protection circuit and solid state disk Download PDFInfo
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- CN207474076U CN207474076U CN201721202720.1U CN201721202720U CN207474076U CN 207474076 U CN207474076 U CN 207474076U CN 201721202720 U CN201721202720 U CN 201721202720U CN 207474076 U CN207474076 U CN 207474076U
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- hard disk
- power supply
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- circuit
- protection
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Abstract
The utility model embodiment provides a kind of hard disk protection circuit, including booster circuit, stand-by power supply.Wherein booster circuit is used to increase external input voltage.Stand-by power supply couples the booster circuit to charge, and powers in the case where exception occurs in the external input voltage to the hard disk, so that the hard disk carries out data protection processing.By the above-mentioned means, the utility model can carry out effective data protection under external input voltage abnormal conditions.A kind of solid state disk is also provided, it includes above-mentioned hard disk protection circuits.
Description
Technical field
The utility model is related to field of hard disks, more particularly to hard disk protection circuit and solid state disk.
Background technology
Hard disk is a very important component in various terminal equipment such as computer, laptop, with to read-write
The pursuit of the promotion of speed, in recent years solid state disk obtained quick development, more and more electronic products use now
Solid state disk, and the solid state disk of small size uses also more normalization, either solid state disk still on industry control class host
Conventional hard, people pay much attention to the data protection ability of hard disk, and require also increasingly harsher.It is but existing solid
In state hard disk when unexpected power down occurs, data protection processing ability is weaker, is easy to cause loss of data, causes irremediable
Loss.
Utility model content
The utility model can improve existing mainly solving the technical problems that offer hard disk protection circuit and solid state disk
There is the problem of hard disk can not effectively carry out data protection in power down.
In order to solve the above technical problems, the utility model embodiment provides a kind of hard disk protection circuit, including booster circuit,
Stand-by power supply.Wherein booster circuit is used to increase external input voltage.Stand-by power supply couples the booster circuit to be filled
Electricity is powered in the case where exception occurs in the external input voltage to the hard disk, so that the hard disk carries out data protection
Processing.
The utility model embodiment also provides a kind of solid state disk, a kind of hard disk provided including the utility model embodiment
Protect circuit.
Compared with prior art, the beneficial effects of the utility model are：The utility model is by by external input voltage liter
Height can be effectively increased the capacitance of stand-by power supply in the premise for improving charging rate, so can be in external input
There is the work for ensureing hard disk in the case of exception in voltage, so that hard disk has the sufficient time to carry out data protection processing, ensures
Data are not lost.
Description of the drawings
Fig. 1 is one embodiment schematic block circuit diagram of the utility model hard disk protection circuit；
Fig. 2 is a flow diagram of one embodiment of the utility model hard disk protection circuit；
Fig. 3 is the another flow diagram of one embodiment of the utility model hard disk protection circuit；
Fig. 4 is two embodiment schematic block circuit diagram of the utility model hard disk protection circuit；
Fig. 5 is the schematic block circuit diagram of solid state disk embodiment of the present invention.
Specific embodiment
Refering to Fig. 1, one embodiment of the utility model hard disk protection circuit, including booster circuit 11, stand-by power supply 12.Boosting
Circuit 11 is used to increase external input voltage.Stand-by power supply 12 couples booster circuit 11 to charge, in external input electricity
It powers in the case of extruding existing exception to hard disk, so that hard disk carries out data protection processing.
By taking solid state disk as an example, solid state disk generally comprises main control chip 15,16 i.e. cache chip of caching, for storing number
According to flash memory 17 be flash chip and internal circuit.Main control chip 15 can be described as the brain of solid state disk, rational allocation number
According to the load on each flash chip, the transfer of entire data is assumed responsibility for, is generally operable to connection flash chip and outside
Interface.Cache chip is generally used for auxiliary main control chip 15 and carries out from data processing.Certainly, some solid state disks do not have
Independent cache chip namely some solid state disks be by cache chip be packaged together with main control chip 15 or it may be said that
Some solid state disk main control chips 15 inherently have the function of caching, some solid state disks have independent cache chip.At this
In embodiment, the boosted circuit 11 of external input voltage charges after increasing to stand-by power supply 12, meanwhile, external input voltage
Supply hard disk works, and in the case of external input voltage exception, stand-by power supply 12 is powered to hard disk, so that hard disk is for example
The main control chip 15 of hard disk carries out data protection processing.By taking the solid state disk of mSATA interfaces as an example, such as external input voltage is
External input voltage while directly powering to hard disk, is increased to 5V, to stand-by power supply 12 by 3.3V by booster circuit 11
Charging, in the present embodiment, the capacitance of stand-by power supply 12 are designed to meet needed for hard disk progress data processing to completion
Capacity.In the present embodiment, the power management IC of hard disk can be compatible with multiple voltage, including external input voltage such as 3.3V,
And the voltage such as 5V after booster circuit 11 is boosted.In the present embodiment, stand-by power supply 12 is capacitance component, when
So in other embodiments, it is, for example, lithium battery etc. that stand-by power supply 12, which can be rechargeable battery pack,.
In the present embodiment, optionally, booster circuit 11 has boost function, while also has defencive function, such as
Overvoltage protection, overcurrent protection overcharge protection etc..The processing of data protection in the present embodiment is included in external input voltage exception
In the case of main control chip 15 can safely transfer data to flash memory 17 and preserve, to prevent the number of data especially just in the transmission
According to this and in the loss of data cached in 16.External input voltage refers to that external input voltage can not support hard disk just extremely
Often work, such as situations such as external input voltage power down.
The utility model is increased external input voltage using booster circuit 11, can be in the premise for improving charging rate
The capacitance of stand-by power supply 12 can be effectively increased, so can ensure hard disk in the case where exception occurs in external input voltage
Work so that hard disk has the sufficient time to carry out data protection processing, ensure that data are not lost.
Referring to Fig.2, optionally, protection circuit further comprises the first detection circuit 13, for detecting external input electricity
Whether pressure there is exception；If so, hard disk carries out data protection processing under the power supply of stand-by power supply 12.Such as first detection circuit
Whether 13 detection external input voltages, which the situation for powering off either power down or spread of voltage occur, can not support hard disk operational.
By setting the first detection circuit 13, can there is a situation where exception detecting external input voltage so that stand-by power supply 12
It powers in time for hard disk, so that main control chip 15 has time enough to carry out data protection processing.If the first detection circuit 13 is examined
It measures external input voltage and exception does not occur, then hard disk works normally, and the first detection circuit 13 is persistently detected work
Such as detection in real time.In other embodiments, the first detection circuit 13 can directly detect booster circuit 11 whether have it is external defeated
Enter control source, i.e. whether external input voltage the situation of power-off or power down occurs.
Refering to Fig. 3, optionally, the first detection circuit 13 be further used for detecting booster circuit 11 with stand-by power supply 12
The voltage of the output terminal of coupling, if the first detection circuit 13 detects the output terminal coupled with stand-by power supply 12 of booster circuit 11
Voltage be the first preset value when, hard disk carries out data cached protection processing under the power supply of stand-by power supply 12.If the first detection
Circuit 13 detects the voltage of the output terminal coupled with stand-by power supply 12 of booster circuit 11 when not still being the first preset value, then the
One detection circuit 13 continues to detect work.
When there are abnormal conditions in external input voltage such as power down or power-off, booster circuit 11 and stand-by power supply
The voltage of the output terminal of 12 couplings will appear variation, such as in power down or power-off, and the voltage of the output terminal can decline, such as
The downward trend of 5V-0V is presented, when the first detection circuit 13 is used to detect the voltage of the output terminal as the first preset value, e.g.
During 4V, hard disk carries out data cached protection processing under the power supply of stand-by power supply 12, if the first detection circuit 13 detects that this is defeated
Such as 4.5V when the voltage of outlet is still greater than the first preset value, then the first detection circuit 13 continue detect power-down conditions until detection
To the first preset value.In the present embodiment, caching 16 can be independent cache chip such as dram chip, can also be with master control
The cache chip of 15 integral packaging of chip.Data cached processing is, for example, that the data of flash memory 17 will be transmitted to from main control chip 15
Mapping data creating it is good, caching 16 is stored in, and can be read by main control chip 15, to facilitate data according to mapping data
Mapping relations are written to 17 the inside of flash memory.
With continued reference to Fig. 3, optionally, protection circuit further comprises the second detection circuit 14, for detecting hard disk
Whether the supply voltage of flash memory 17 is the second preset value, if so, hard disk carries out flash data protection processing.If the second detection electricity
Road 14 detects that the supply voltage of the flash memory 17 of hard disk is more than the second preset value, then continues to detect work, until detecting flash memory
17 supply voltage is the second preset value.In the present embodiment, the supply voltage of flash memory 17 for example refers to flash chip or sudden strain of a muscle
Deposit chip and its supply voltage of peripheral circuits.
When external input voltage occurs abnormal, such as power-off or power down, then it is supplied by stand-by power supply 12 to hard disk
Electricity, during hard disk use, the electricity of stand-by power supply 12 is also declining always, in the process that 12 electricity of stand-by power supply declines
In, when the second detection circuit 14 detects that the supply voltage of flash memory 17 is, for example, 2.7V for the second preset value, then hard disk is for example hard
The main control chip 15 of disk carries out flash data protection processing.If the second detection circuit 14 detects the power supply of the flash memory 17 of hard disk
Voltage is more than the second preset value such as 3V, then continues to detect work, detects that the power supply of flash memory 17 is electric as voltage is decreased until
It presses as the second preset value such as 2.7V.In the present embodiment, flash data protection processing for example refer to by the data in transmission by
It is stored in flash chip according to the mapping relations of mapping data, it so can be to avoid loss of data, by setting the second detection circuit
14 and second preset value, it can ensure the data protection processing that flash memory 17 has time enough and electricity carries out flash memory 17,
Avoid loss of data.
With continued reference to Fig. 3, optionally, the second detection circuit 14 is further used for detecting the power supply electricity of the flash memory 17 of hard disk
Whether pressure is third preset value, if so, flash data protection processing stops.That is, the second detection circuit 14 detects second
Preset value and after hard disk is made to have carried out flash data protection processing, then to such as 2.3V during third preset value, then flash data
Protection processing stops.If the second detection circuit 14, detect that the supply voltage of the flash memory 17 of hard disk is less than the second preset value but big
Such as 2.4V when third preset value then continues to detect work, until the supply voltage for detecting flash memory 17 is third preset value
Such as 2.3V, flash data protection processing stop.In the present embodiment, flash data protection processing stops including flash data guarantor
Shield processing is completed or unfinished two states.The capacitance of stand-by power supply 12 can pass through the first preset value, the second preset value
And the numerical value such as third preset value are designed, it can be ensured that the capacitance of stand-by power supply 12 can be supplied to hard disk into line number enough
When detecting third preset value according to processing completion namely the second detection circuit 14, flash data protection processing is completed and is stopped.When
So, when it is third preset value that the second detection circuit 14, which detects the supply voltage of flash memory 17, flash data protection processing is not complete
Portion completes, then flash data protection processing stops.Because such as supply voltage be less than third preset value when flash memory 17 can not carry out
It works, in order to avoid flash memory 17 can not work and cause the loss of more big data, therefore to stop subsequent flash data and protect
Shield processing, with ensure it is processed into data safety.
Optionally, when the second detection circuit 14 detects the supply voltage of the flash memory 17 of hard disk as the second preset value, delay
Deposit data protection processing is completed.That is, the first detection circuit 13 detects that being coupled with stand-by power supply 12 for booster circuit 11 is defeated
When the voltage of outlet is the first preset value during such as 4V, start the data protection processing of caching 16, the second detection circuit 14 detects
Supply voltage to hard disk flash memory 17 is the second preset value, and data cached protection processing stops.In the present embodiment, it is data cached
Protection processing stops including data cached protection processing completion or unfinished two states, and the capacitance of stand-by power supply 12 can be with
It is designed by numerical value such as the first preset value, the second preset value and third preset values, it can be ensured that the electricity of stand-by power supply 12
Capacity can be supplied to hard disk to carry out data processing completion namely the power supply electricity of flash memory is detected including the second detection circuit 14 enough
When pressing as the second preset value, data cached protection processing is completed and is stopped, when the second detection circuit 14 detects third preset value
When, flash data protection processing is completed and is stopped.Certainly, when the second detection circuit 14 detects that the supply voltage of flash memory 17 is the
During two preset values, data cached processing is not fully completed, then data cached protection processing stops, in order to save electricity to subsequent
Flash data protection is handled, so as to avoid the further loss of data.It, can by setting the first preset value and the second preset value
Ensure that main control chip 15 effectively controllably carries out data cached protection processing, ensure the validity of follow-up data processing.
Refering to Fig. 4, two embodiment of the utility model hard disk protection circuit is implemented with the utility model hard disk protection circuit one
Example is identical, and main difference is, booster circuit 11 is further used for increasing external input voltage so that hard disk works.
After i.e. booster circuit 11 increases external input voltage, charge while power supply to hard disk to stand-by power supply 12.
Refering to Fig. 5, the solid state disk 1 in the utility model solid state disk embodiment, including above-mentioned the utility model hard disk
Protect the protection circuit of one embodiment of circuit or two embodiments.
To sum up, the utility model can improve charging speed by the way that booster circuit 11 is set to increase external input voltage
The capacitance of stand-by power supply 12 can be effectively increased in the premise of degree, can so occur abnormal situation in external input voltage
Stand-by power supply 12 can be made effectively to ensure the work of hard disk down, so that hard disk has the sufficient time to carry out data protection processing,
Ensure that data are not lost.
The foregoing is merely the embodiments of the utility model, and it does not limit the scope of the patent of the present invention, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is equally included in the patent within the scope of the utility model.
Claims (10)
1. a kind of hard disk protection circuit, which is characterized in that including：
Booster circuit, for external input voltage to be increased；
Stand-by power supply couples the booster circuit to charge, in the case where there is exception in the external input voltage to
The hard disk power supply, so that the hard disk carries out data protection processing.
2. protection circuit according to claim 1, which is characterized in that the protection circuit further comprises the first detection electricity
Road, for detecting whether the external input voltage exception occurs；If so, the hard disk under the power supply of the stand-by power supply into
Row data protection is handled.
3. protection circuit according to claim 2, it is characterised in that：First detection circuit is further used for detecting institute
The voltage of the output terminal coupled with the stand-by power supply of booster circuit is stated, if first detection circuit detects the boosting
When the voltage of the output terminal coupled with the stand-by power supply of circuit is the first preset value, the hard disk is in the power supply of stand-by power supply
It is lower to carry out data cached protection processing.
4. protection circuit according to claim 1, it is characterised in that：The booster circuit is further used for external input
Voltage raising works for the hard disk.
5. circuit is protected according to claim 3, it is characterised in that：The protection circuit further comprises the second detection electricity
Road, for detecting whether the supply voltage of the flash memory area of the hard disk is the second preset value, if so, the hard disk carries out flash memory
Data protection is handled.
6. protection circuit according to claim 5, it is characterised in that：Second detection circuit is further used for detecting institute
Whether the supply voltage for stating the flash memory of hard disk is third preset value, if so, flash data protection processing stops.
7. protection circuit according to claim 2, it is characterised in that：The stand-by power supply is capacitance component.
8. protection circuit according to claim 1, it is characterised in that：The hard disk is that the solid-state based on mSATA standards is hard
Disk.
9. protection circuit according to claim 5, it is characterised in that：Second detection circuit detects the hard disk
When the supply voltage of flash memory is the second preset value, the data cached protection processing stops.
10. a kind of solid state disk, which is characterized in that including protecting circuit according to claim 1-9 any one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721202720.1U CN207474076U (en) | 2017-09-19 | 2017-09-19 | Hard disk protection circuit and solid state disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721202720.1U CN207474076U (en) | 2017-09-19 | 2017-09-19 | Hard disk protection circuit and solid state disk |
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| Publication Number | Publication Date |
|---|---|
| CN207474076U true CN207474076U (en) | 2018-06-08 |
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ID=62269335
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721202720.1U Active CN207474076U (en) | 2017-09-19 | 2017-09-19 | Hard disk protection circuit and solid state disk |
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| CN (1) | CN207474076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109117094A (en) * | 2018-08-23 | 2019-01-01 | 郑州云海信息技术有限公司 | A kind of date storage method, device and hard disc apparatus |
-
2017
- 2017-09-19 CN CN201721202720.1U patent/CN207474076U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109117094A (en) * | 2018-08-23 | 2019-01-01 | 郑州云海信息技术有限公司 | A kind of date storage method, device and hard disc apparatus |
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Address after: 518000 floors 1-3 and 4 of buildings 4 and 8, zone 2, Zhongguan honghualing Industrial South Zone, No. 1213 Liuxian Avenue, Pingshan community, Taoyuan Street, Nanshan District, Shenzhen, Guangdong Patentee after: BIWIN STORAGE TECHNOLOGY Co.,Ltd. Address before: 518055 floors 1, 2, 4 and 5 of No. 4 plant, tongfuyu industrial city, Taoyuan Street, Shenzhen City, Guangdong Province Patentee before: BIWIN STORAGE TECHNOLOGY Co.,Ltd. |