CN107993682A - A kind of overvoltage crowbar and solid state hard disc - Google Patents
A kind of overvoltage crowbar and solid state hard disc Download PDFInfo
- Publication number
- CN107993682A CN107993682A CN201711481896.XA CN201711481896A CN107993682A CN 107993682 A CN107993682 A CN 107993682A CN 201711481896 A CN201711481896 A CN 201711481896A CN 107993682 A CN107993682 A CN 107993682A
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- power supply
- supply interface
- solid state
- hard disc
- state hard
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- 239000007787 solid Substances 0.000 title claims abstract description 85
- 238000004146 energy storage Methods 0.000 claims description 22
- 239000004065 semiconductor Substances 0.000 claims description 15
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical group [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- G11C5/148—Details of power up or power down circuits, standby circuits or recovery circuits
-
- 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
- G11C5/143—Detection of memory cassette insertion or removal; Continuity checks of supply or ground lines; Detection of supply variations, interruptions or levels ; Switching between alternative supplies
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Sources (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The embodiment of the invention discloses a kind of overvoltage crowbar and solid state hard disc, wherein overvoltage crowbar includes switch element and control unit；Switch element is used to be connected with the power supply interface and inner function circuit of solid state hard disc；Control unit is connected with switch element, and for being connected with power supply interface；Control unit controls switch unit, to cut off power supply of the power supply interface to inner function circuit when the voltage for detecting power supply interface is more than default voltage threshold；Conversely, controlling switch unit turns on, so that power supply of the power supply interface to inner function circuit.It can be seen that; when solid state hard disc is by exterior big voltge surge; overvoltage crowbar can cut off power supply of the solid state hard disc power supply interface to inner function circuit in time; so as to efficiently reduce exterior big impact of the voltage to the inner function circuit of solid state hard disc; on the one hand, the service life of solid state hard disc is improved；On the other hand it ensure that the reliability of solid state hard disc data.
Description
Technical field
The present invention relates to storing technology field, more particularly to a kind of overvoltage crowbar and solid state hard disc.
Background technology
Solid state hard disc (Solid State Drives), referred to as consolidates disk, and it is made with solid-state electronic storage chip array
Into hard disk, be made of control chip and storage chip (FLASH chip, dram chip).
During the use of solid state hard disc, due to the fluctuation of power supply circuit voltage, the voltage of power supply circuit may be high
In the voltage needed for solid state hard disc, the impact of big voltage for a long time can reduce the service life of solid state hard disc, even can be direct when serious
Cause solid state hard disc to burn out, cause the loss of data of solid state hard disc.
The content of the invention
The embodiment of the present invention provides a kind of overvoltage crowbar and solid state hard disc, it is intended to it is hard to solid-state to reduce exterior big voltage
The impact of disk, improves the service life of solid state hard disc.
In a first aspect, the embodiment of the present invention proposes a kind of overvoltage crowbar, the overvoltage crowbar is applied to solid-state
In hard disk, the solid state hard disc includes power supply interface and inner function circuit, and the overvoltage crowbar includes：
Switch element, for being connected with the power supply interface and the inner function circuit；And
Control unit, is connected with the switch element, and for being connected with the power supply interface；Described control unit is being examined
When measuring the voltage of the power supply interface and being more than default voltage threshold, the switch element is controlled to disconnect, to cut off the confession
Power supply of the electrical interface to the inner function circuit；Described control unit is detecting the voltage of the power supply interface no more than pre-
If voltage threshold when, the switching means conductive is controlled, so that the power supply interface powers the inner function circuit.
Further technical solution is for it, further includes：
Energy-storage units, for being connected with the power supply interface and the inner function circuit, and and described control unit
Connection；
Wherein, described control unit is when the voltage for detecting the power supply interface is more than default voltage threshold, control
The energy-storage units power the inner function circuit；Described control unit is little in the voltage for detecting the power supply interface
When default voltage threshold, the energy-storage units are controlled to charge.
Further technical solution is for it, and the switch element includes the first controllable switch；First controllable switch
Input terminal is used to be connected with the power supply interface, and the output terminal of first controllable switch is used to connect with the inner function circuit
Connect, the control terminal of first controllable switch is connected with described control unit.
Further technical solution is for it, and described control unit includes the second controllable switch and zener diode；It is described
The input terminal of second controllable switch is used to be connected with the power supply interface, the output terminal of second controllable switch and described first
The control terminal connection of controllable switch, the control terminal of second controllable switch are connected with the cathode of the zener diode；It is described
The cathode of zener diode is used to be connected with the power supply interface, the anode ground connection of the zener diode.
Further technical solution is for it, and the energy-storage units include the 3rd controllable switch and capacitance, and the described 3rd can
The input terminal of control switch is used to be connected with the power supply interface, output terminal and the capacitance connection of the 3rd controllable switch,
The control terminal of 3rd controllable switch is connected with the cathode of the zener diode；The capacitance is used for and the built-in function
Circuit connects.
Further technical solution is for it, and first controllable switch is triode or metal-oxide-semiconductor.
Further technical solution is for it, and second controllable switch is triode or metal-oxide-semiconductor.
Further technical solution is for it, and the 3rd controllable switch is triode or metal-oxide-semiconductor.
Further technical solution is for it, and the capacitance is tantalum capacitance.
Second aspect, the embodiment of the present invention propose a kind of solid state hard disc, and the solid state hard disc includes：Power supply interface, inside
Functional circuit and overvoltage crowbar as described in relation to the first aspect.
By the technical solution of the application embodiment of the present invention, by the electricity of the power supply interface of control unit detection solid state hard disc
Pressure, when detecting that the voltage of power supply interface of solid state hard disc is more than default voltage threshold, controls switch unit, in time
Ground has cut off power supply of the power supply interface to inner function circuit, so as to efficiently reduce exterior big voltage in solid state hard disc
The impact of portion's functional circuit, on the one hand, improve the service life of solid state hard disc；On the other hand, it is ensured that solid state hard disc data
Reliability.
Brief description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, general for this area
For logical technical staff, without creative efforts, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of schematic block diagram of overvoltage crowbar provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic block diagram for overvoltage crowbar that another embodiment of the present invention provides；
Fig. 3 is a kind of schematic block diagram for overvoltage crowbar that further embodiment of this invention provides；
Fig. 4 is a kind of schematic block diagram of solid state hard disc provided in an embodiment of the present invention.
Reference numeral
1st, solid state hard disc；10th, overvoltage crowbar；20th, power supply interface；30 inner function circuits；11st, switch element；12、
Control unit；13rd, energy-storage units；111st, the first controllable switch；121st, the second controllable switch；122nd, zener diode；131st,
Three controllable switches；132nd, capacitance.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in embodiment is clearly and completely retouched
State, similar reference numerals represent similar component in attached drawing.Obviously, embodiment explained below is only the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
All other embodiments obtained under the premise of creative work, belong to the scope of protection of the invention.
It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but it is not precluded from one or more of the other feature, whole
Body, step, operation, element, component and/or its presence or addition for gathering.
It is also understood that in this embodiment of the present invention term used in the description merely for the sake of description particular implementation
Example purpose and be not intended to limit the embodiment of the present invention.Such as the institute in specification and appended book of the embodiment of the present invention
As use, unless context clearly indicates other situations, otherwise " one " of singulative, "one" and "the" are intended to wrap
Include plural form.
Referring to Fig. 1, a kind of schematic block diagram of its overvoltage crowbar 10 proposed for the embodiment of the present invention, the overvoltage protection
Circuit 10 is applied in solid state hard disc, and solid state hard disc includes power supply interface 20 and inner function circuit 30, as seen from the figure, the mistake
Voltage protection circuit 10 includes switch element 11 and control unit 12, and each component is described below：
Switch element 11 is used to be connected with the power supply interface 20 of solid state hard disc and the inner function circuit 30 of solid state hard disc.
The power supply interface 20 of solid state hard disc is used to be connected with exterior power supply source, to realize power supply of the externally fed source to solid state hard disc.
The inner function circuit 30 of solid state hard disc includes the function modules such as control chip and storage chip.Turned in switch element 11
When, the line conduction between the power supply interface 20 of solid state hard disc and the inner function circuit 30 of solid state hard disc, power supply interface 20 is right
Inner function circuit 30 is powered；When switch element 11 disconnects, the power supply interface 20 of solid state hard disc and the inside work(of solid state hard disc
Circuit between energy circuit 30 disconnects, and power supply interface 20 does not power inner function circuit 30.
Control unit 12, is connected with switch element 11, and for being connected with the power supply interface 20 of solid state hard disc.Control unit
12 when the voltage for detecting power supply interface 20 is more than default voltage threshold, and controlling switch unit 11 disconnects, to cut off power supply
Power supply of the interface 20 to the inner function circuit 30.Control unit 12 is detecting the voltage of power supply interface 20 less than default
During voltage threshold, controlling switch unit 11 turns on, so that power supply of the power supply interface 20 to inner function circuit 30.Wherein, voltage
The maximum voltage that threshold value can bear according to solid state hard disc inner function circuit 30 is set.
By applying the technical solution of the present embodiment, the electricity of the power supply interface 20 of solid state hard disc is detected by control unit 12
Pressure, when detecting that the voltage of power supply interface 20 of solid state hard disc is more than default voltage threshold, controlling switch unit 11 disconnects,
Power supply of the power supply interface 20 to inner function circuit 30 has been cut off in time, so as to efficiently reduce exterior big voltage to solid-state
The impact of the inner function circuit 30 of hard disk, on the one hand, improve the service life of solid state hard disc；On the other hand it ensure that solid-state is hard
The reliability of disk data.
Referring to Fig. 2, in some embodiments, such as the present embodiment, the overvoltage crowbar 10 further includes energy-storage units
13。
Energy-storage units 13 are used to be connected with the power supply interface 20 of solid state hard disc and the inner function circuit 30 of solid state hard disc.
Energy-storage units 13 are also connected with control unit 12.
Control unit 12 controls energy-storage units 13 when the voltage for detecting power supply interface 20 is more than default voltage threshold
Power to the inner function circuit 30 of solid state hard disc.At this time, inside work(of the energy-storage units 13 as stand-by power supply to solid state hard disc
Energy circuit 30 is powered, to maintain the normal work of the inner function circuit 30 of solid state hard disc.
Control unit 12 controls energy-storage units 13 when the voltage for detecting power supply interface 20 is less than default voltage threshold
Charging.
Referring to Fig. 3, in some embodiments, such as the present embodiment, switch element 11 includes the first controllable switch 111；The
One controllable switch 111 includes input, output end and control terminal.The input terminal of first controllable switch 111 is used for hard with solid-state
The power supply interface 20 of disk connects, and the output terminal of the first controllable switch 111 is used to be connected with the inner function circuit 30 of solid state hard disc,
The control terminal of first controllable switch 111 is connected with control unit 12.
Further, control unit 12 includes the second controllable switch 121 and zener diode 122.Second controllable switch
121 include input, output end and control terminal.The power supply that the input terminal of second controllable switch 121 is used for solid hard disk connects
Mouth 20 connects, and the output terminal of the second controllable switch 121 is connected with the control terminal of the first controllable, the second controllable switch 121
Control terminal is connected with the cathode of zener diode 122.The cathode of zener diode 122 is used to be connected with power supply interface 20, voltage stabilizing
The anode ground connection of diode 122.
Further, energy-storage units 13 include the 3rd controllable switch 131 and capacitance 132.3rd controllable switch 131 includes
Input, output end and control terminal.The input terminal of 3rd controllable switch 131 is used to connect with the power supply interface 20 of solid state hard disc
Connect, the output terminal of the 3rd controllable switch 131 is connected with capacitance 132, the control terminal and zener diode of the 3rd controllable switch 131
122 cathode connection.Capacitance 132 is used to be connected with inner function circuit 30.
In certain embodiments, the first controllable switch 111 is triode.Or in other embodiments, first controllable opens
It is metal-oxide-semiconductor to close 111.
In certain embodiments, the second controllable switch 121 is triode.Or in other embodiments, second controllable opens
It is metal-oxide-semiconductor to close 121.
In certain embodiments, the 3rd controllable switch 131 is triode.Or in other embodiments, the 3rd controllable opens
It is metal-oxide-semiconductor to close 131.
It should be noted that the input terminal of triode is its collector, the output terminal of triode is its emitter, triode
Control terminal be its base stage.
The input terminal of metal-oxide-semiconductor drains for it, and the output terminal of metal-oxide-semiconductor is its source electrode, and the control terminal of metal-oxide-semiconductor is grid.
In certain embodiments, capacitance 132 is tantalum capacitance.Tantalum capacitance is more frivolous, and the space occupied is few, is easily installed
In solid state hard disc.Either capacitance 132 is super capacitor or electrolytic capacitor in other embodiments.
Operation principle explanation
Referring to Fig. 3, when the voltage of the power supply interface 20 of solid state hard disc is more than default voltage threshold, zener diode
122 conductings, the second controllable switch 121 disconnect；And then first controllable switch 111 disconnect, cut off the power supply interface of solid state hard disc
The power supply of the inner function circuit 30 of 20 pairs of solid state hard discs.The 3rd controllable switch disconnects at the same time, and capacitance 132 is into solid state hard disc
Portion's functional circuit 30 is powered.
When the voltage of the power supply interface 20 of solid state hard disc is not more than default voltage threshold, zener diode 122 disconnects,
Second controllable switch 121 turns on；And then first controllable switch 111 turn on, the power supply interface 20 of solid state hard disc is to solid state hard disc
The power supply of inner function circuit 30.The conducting of the 3rd controllable switch, capacitance 132 charge at the same time.
Referring to Fig. 4, it is a kind of schematic block diagram for solid state hard disc 1 that the embodiment of the present invention proposes, as seen from the figure, the solid-state
Hard disk 1 includes the overvoltage crowbar 10 that above example proposes.Specifically, which includes power supply interface 20, inside
Functional circuit 30 and overvoltage crowbar 10.Overvoltage crowbar 10 includes switch element 11 and control unit 12, each portion
Part is described below：
The power supply interface 20 of solid state hard disc 1 is used to be connected with exterior power supply source, to realize that externally fed source is hard to solid-state
The power supply of disk 1.The inner function circuit 30 of solid state hard disc 1 includes the function modules such as control chip and storage chip.
Switch element 11 is connected with power supply interface 20 and inner function circuit 30.When switch element 11 turns on, power supply
Line conduction between interface 20 and inner function circuit 30, power supply interface 20 power inner function circuit 30；It is single in switch
When member 11 disconnects, the circuit between power supply interface 20 and inner function circuit 30 disconnects, and power supply interface 20 is not to built-in function electricity
Road 30 powers.
Control unit 12, is connected with switch element 11, and is connected with power supply interface 20.Control unit 12 is detecting power supply
When the voltage of interface 20 is more than default voltage threshold, controlling switch unit 11 disconnects, to cut off power supply interface 20 to described interior
The power supply of portion's functional circuit 30.Control unit 12 is when the voltage for detecting power supply interface 20 is less than default voltage threshold, control
Switch element 11 processed turns on, so that power supply of the power supply interface 20 to inner function circuit 30.Wherein, voltage threshold is hard according to solid-state
The maximum voltage setting that 1 inner function circuit 30 of disk can bear.
By applying the technical solution of the present embodiment, the electricity of the power supply interface 20 of solid state hard disc 1 is detected by control unit 12
Pressure, when detecting that the voltage of power supply interface 20 of solid state hard disc 1 is more than default voltage threshold, controlling switch unit 11 is disconnected
Open, cut off power supply of the power supply interface 20 to inner function circuit 30 in time, so as to effectively prevent exterior big voltage pair
The impact of the inner function circuit 30 of solid state hard disc 1, improves the service life of solid state hard disc 1.
Referring to Fig. 2, in some embodiments, such as the present embodiment, overvoltage crowbar 10 further includes energy-storage units 13.
Energy-storage units 13 are connected with the power supply interface 20 of solid state hard disc 1 and the inner function circuit 30 of solid state hard disc 1.Storage
Energy unit 13 is also connected with control unit 12.
Control unit 12 controls energy-storage units 13 when the voltage for detecting power supply interface 20 is more than default voltage threshold
Power to the inner function circuit 30 of solid state hard disc 1.At this time, energy-storage units 13 as stand-by power supply to the inside of solid state hard disc 1
Functional circuit 30 is powered, to maintain the normal work of the inner function circuit 30 of solid state hard disc 1.
Control unit 12 controls energy-storage units 13 when the voltage for detecting power supply interface 20 is less than default voltage threshold
Charging.
Referring to Fig. 3, in some embodiments, such as the present embodiment, switch element 11 includes the first controllable switch 111；The
One controllable switch 111 includes input, output end and control terminal.The input terminal of first controllable switch 111 and solid state hard disc 1
Power supply interface 20 connects, and the output terminal of the first controllable switch 111 is connected with the inner function circuit 30 of solid state hard disc 1, and first can
The control terminal of control switch 111 is connected with control unit 12.
Further, control unit 12 includes the second controllable switch 121 and zener diode 122.Second controllable switch
121 include input, output end and control terminal.The input terminal of second controllable switch 121 and the power supply interface 20 of solid hard disk
Connection, the output terminal of the second controllable switch 121 are connected with the control terminal of the first controllable, the control of the second controllable switch 121
End is connected with the cathode of zener diode 122.The cathode of zener diode 122 is connected with power supply interface 20, zener diode 122
Anode ground connection.
Further, energy-storage units 13 include the 3rd controllable switch 131 and capacitance 132.3rd controllable switch 131 includes
Input, output end and control terminal.The input terminal of 3rd controllable switch 131 is connected with the power supply interface 20 of solid state hard disc 1, the
The output terminal of three controllable switches 131 is connected with capacitance 132, and the control terminal and zener diode 122 of the 3rd controllable switch 131 are just
Pole connects.Capacitance 132 is connected with inner function circuit 30.
In certain embodiments, the first controllable switch 111 is triode.Or in other embodiments, first controllable opens
It is metal-oxide-semiconductor to close 111.
In certain embodiments, the second controllable switch 121 is triode.Or in other embodiments, second controllable opens
It is metal-oxide-semiconductor to close 121.
In certain embodiments, the 3rd controllable switch 131 is triode.Or in other embodiments, the 3rd controllable opens
It is metal-oxide-semiconductor to close 131.
In certain embodiments, capacitance 132 is tantalum capacitance 132.Tantalum capacitance 132 is more frivolous, and the space occupied is few, is easy to
In solid state hard disc 1.Either capacitance 132 is super capacitor 132 or electrolytic capacitor 132 in other embodiments.
It should be noted that solid state hard disc proposed by the present invention further includes in addition to the described structure of above example
Realize the other structures of solid state hard disc basic function, the other structures of above solid state hard disc are that those skilled in the art institute is ripe
Know, details are not described herein.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in some embodiment
Part, may refer to the associated description of other embodiment.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, even these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
The above, is the embodiment of the present invention, but protection scope of the present invention is not limited thereto, any ripe
Know those skilled in the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (10)
- A kind of 1. overvoltage crowbar, it is characterised in that applied in solid state hard disc, the solid state hard disc include power supply interface with And inner function circuit, the overvoltage crowbar include：Switch element, for being connected with the power supply interface and the inner function circuit；AndControl unit, is connected with the switch element, and for being connected with the power supply interface；Described control unit is detecting When the voltage of the power supply interface is more than default voltage threshold, control the switch element to disconnect, connect with cutting off the power supply Power supply of the mouth to the inner function circuit；Described control unit is detecting the voltage of the power supply interface no more than default During voltage threshold, the switching means conductive is controlled, so that the power supply interface powers the inner function circuit.
- 2. overvoltage crowbar according to claim 1, it is characterised in that further include：Energy-storage units, for being connected with the power supply interface and the inner function circuit, and are connected with described control unit；Wherein, described control unit is when the voltage for detecting the power supply interface is more than default voltage threshold, described in control Energy-storage units power the inner function circuit；Described control unit is detecting the voltage of the power supply interface no more than pre- If voltage threshold when, control the energy-storage units to charge.
- 3. overvoltage crowbar according to claim 2, it is characterised in that：The switch element includes first and controllable opens Close；The input terminal of first controllable switch is used to be connected with the power supply interface, and the output terminal of first controllable switch is used It is connected in the inner function circuit, the control terminal of first controllable switch is connected with described control unit.
- 4. overvoltage crowbar according to claim 3, it is characterised in that：Described control unit includes the second controllable switch And zener diode；The input terminal of second controllable switch is used to be connected with the power supply interface, and described second controllable opens The output terminal of pass is connected with the control terminal of first controllable switch, the control terminal of second controllable switch and the voltage stabilizing two The cathode connection of pole pipe；The cathode of the zener diode is used to be connected with the power supply interface, and the zener diode is born Pole is grounded.
- 5. overvoltage crowbar according to claim 4, it is characterised in that：The energy-storage units include the 3rd controllable switch And capacitance, the input terminal of the 3rd controllable switch are used to be connected with the power supply interface, the 3rd controllable switch it is defeated Outlet and the capacitance connection, the control terminal of the 3rd controllable switch are connected with the cathode of the zener diode；The electricity Hold and be used to be connected with the inner function circuit.
- 6. according to claim 3-5 any one of them overvoltage crowbars, it is characterised in that：First controllable switch is three Pole pipe or metal-oxide-semiconductor.
- 7. overvoltage crowbar according to claim 4 or 5, it is characterised in that：Second controllable switch is triode Or metal-oxide-semiconductor.
- 8. overvoltage crowbar according to claim 5, it is characterised in that：3rd controllable switch for triode or Metal-oxide-semiconductor.
- 9. overvoltage crowbar according to claim 5, it is characterised in that：The capacitance is tantalum capacitance.
- 10. a kind of solid state hard disc, it is characterised in that the solid state hard disc includes：Power supply interface, inner function circuit and such as power Profit requires 1-9 any one of them overvoltage crowbars.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481896.XA CN107993682B (en) | 2017-12-29 | 2017-12-29 | Overvoltage protection circuit and solid state disk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711481896.XA CN107993682B (en) | 2017-12-29 | 2017-12-29 | Overvoltage protection circuit and solid state disk |
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| CN107993682A true CN107993682A (en) | 2018-05-04 |
| CN107993682B CN107993682B (en) | 2023-10-31 |
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| CN103986223A (en) * | 2014-04-11 | 2014-08-13 | 矽力杰半导体技术(杭州)有限公司 | Energy storage power supply circuit and continuous power supply method using same |
| CN203895959U (en) * | 2014-06-26 | 2014-10-22 | 华通机电股份有限公司 | Voltage stabilizer power-cut motor return circuit |
| CN204089172U (en) * | 2014-06-26 | 2015-01-07 | 华通机电股份有限公司 | A kind of pressurizer power-off rear motor return control system |
| US20160018868A1 (en) * | 2014-07-17 | 2016-01-21 | Rohm Co., Ltd. | Power management circuit and electronic device employing the same |
| CN204205545U (en) * | 2014-09-30 | 2015-03-11 | 深圳中兴力维技术有限公司 | Power overcurrent protection circuit |
| CN105279109A (en) * | 2014-11-25 | 2016-01-27 | 天津市英贝特航天科技有限公司 | Solid state disk power down protection circuit and power down protection method |
| CN106445059A (en) * | 2016-09-05 | 2017-02-22 | 深圳市炜烨丰电子科技有限公司 | Hard disk protection circuit for voltage leap of alternating-current power network |
| CN206353445U (en) * | 2016-12-30 | 2017-07-25 | 西安奇维科技有限公司 | A kind of power supply circuit of solid state hard disc |
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| CN107993682B (en) | 2023-10-31 |
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