CN110515447B - Power supply system and method for storage medium - Google Patents
Power supply system and method for storage medium Download PDFInfo
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- CN110515447B CN110515447B CN201910736144.6A CN201910736144A CN110515447B CN 110515447 B CN110515447 B CN 110515447B CN 201910736144 A CN201910736144 A CN 201910736144A CN 110515447 B CN110515447 B CN 110515447B
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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
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
- G06F1/305—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations in the event of power-supply fluctuations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
Abstract
The application provides a power supply system and a method of a storage medium, wherein the system outputs power supply voltage to the storage medium through a power supply module; feeding back the power supply voltage output to the storage medium by the power supply module through a feedback circuit to obtain a feedback voltage; the feedback voltage is compensated by a compensation factor in the compensation circuit to obtain a supply voltage within a safe voltage threshold range. The system feeds back the power supply voltage through the feedback circuit to obtain the feedback voltage, and adjusts the feedback force of the feedback voltage through the compensation factor in the compensation circuit, so that the power supply voltage is controlled within the range of the safe voltage threshold value, and the safe power supply voltage is provided for the storage medium.
Description
Technical Field
The present disclosure relates to power supply systems, and particularly to a power supply system and method for a storage medium.
Background
The storage medium is used for storing data, such as a mechanical hard disk, a solid state hard disk and the like. The working process of each storage medium depends on the cooperation among related devices such as a control chip, a power supply module and a memory. In order to ensure the normal operation of the storage medium, it is necessary to provide a stable power supply for the storage medium.
At present, there is a power supply design method for a storage medium, which dynamically adjusts the voltage output from a power supply module to the storage medium. Specifically, when the storage medium is subjected to read-write operation, the load changes along with the storage medium, and therefore the power supply module needs to adjust the voltage output to the storage medium through the compensation circuit to reduce voltage oscillation caused by load change, so that the voltage is guaranteed to fluctuate within the safety threshold range. The output voltage is monitored in real time through the feedback circuit, and the compensation circuit is triggered to adjust when voltage oscillation exists, so that the dynamic adjustment of the voltage is realized.
However, when the storage medium performs full-disk write operation, the load change is too large, the voltage regulated by the power supply module through the compensation line exceeds the safe voltage threshold range, and a restart protection mechanism of the storage medium is triggered, so that data stored in the storage medium is lost.
Disclosure of Invention
In view of this, an embodiment of the present application provides a power supply system for a storage medium, so as to solve the problem that data stored in the storage medium is lost due to a restart protection mechanism of the storage medium being triggered when a voltage exceeds a safety threshold range. In addition, the embodiment of the application also provides a power supply method of the storage medium, so as to ensure that the system is applied to discovery in practice.
In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:
in a first aspect, the present application provides a power supply system for a storage medium, comprising:
the power supply module is used for outputting power supply voltage to the storage medium;
the feedback circuit is used for acquiring the power supply voltage output by the power supply module and generating a feedback voltage according to the power supply voltage output by the power supply module;
and the compensation circuit is used for receiving the feedback voltage, compensating the feedback voltage through a compensation factor in the compensation circuit, and adjusting the power supply voltage output by the power supply module based on the compensated feedback voltage so as to enable the adjusted power supply voltage to be within a safety voltage threshold range.
In a second aspect, the present application provides a power supply method for a storage medium, which is applied to the power supply system for a storage medium described in the first aspect, and the method includes:
acquiring a power supply voltage output to a storage medium;
generating a feedback voltage according to the power supply voltage;
compensating the feedback voltage by a compensation factor, and adjusting the supply voltage based on the compensated feedback voltage so that the adjusted supply voltage is within a safe voltage threshold range.
According to the technical scheme, the power supply system of the storage medium is provided, and the system outputs power supply voltage to the storage medium through the power supply module; feeding back the power supply voltage output to the storage medium by the power supply module through a feedback circuit to obtain a feedback voltage; the feedback voltage is compensated by a compensation factor in the compensation circuit to obtain a supply voltage within a safe voltage threshold range. The system feeds back the power supply voltage through the feedback circuit to obtain the feedback voltage, and adjusts the feedback force of the feedback voltage through the compensation factor in the compensation circuit, so that the power supply voltage is controlled within the range of the safe voltage threshold value, and the safe power supply voltage is provided for the storage medium.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram illustrating a power supply system for a storage medium provided herein;
fig. 2 is a schematic diagram illustrating a connection structure of a comparator in the feedback circuit provided in the present application;
FIG. 3 illustrates a schematic diagram of a compensation circuit provided herein;
FIG. 4 is a waveform diagram illustrating a prior art voltage oscillation;
FIG. 5 is a waveform diagram illustrating a prior art voltage oscillation;
FIG. 6 is a waveform diagram illustrating voltage oscillations provided herein;
FIG. 7 is a block diagram illustrating a power supply system for another storage medium provided herein;
FIG. 8 is a flow chart illustrating a method for powering a storage medium provided herein;
fig. 9 is a flowchart illustrating a power supply method for another storage medium provided by the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
There are many storage media on the market, such as mechanical hard disks, solid state disks, etc. Among them, the solid state disk is popular with most people due to its own features, such as the feature of faster data transmission rate. Taking the solid state disk as an example, in order to ensure that the solid state disk can stably execute various working states, a power supply module and a state control module need to be arranged inside the solid state disk. The power supply module is used for providing power supply voltage for the solid state disk, and the state control module is used for controlling the working state of the solid state disk, such as reading, writing, full reading, full writing and the like.
At present, a power supply system for a solid state disk exists, and the system outputs a power supply voltage to the solid state disk through a power supply module. When the working state of the solid state disk changes, the load of the solid state disk changes accordingly, so that voltage oscillation of the power supply voltage is caused. This voltage oscillation may now cause the supply voltage to exceed the safe voltage threshold range. For the supply voltage to oscillate within the safe voltage threshold range, the supply voltage needs to be adjusted, specifically: the power supply voltage is fed back through the feedback circuit, and the feedback force is adjusted through the compensation factor of the compensation circuit, so that the power supply voltage is dynamically adjusted.
However, the above-described adjustment method has drawbacks. When the solid state disk is in a full-writing state, the voltage oscillation of the power supply voltage regulated by the feedback circuit and the compensation circuit exceeds the safe voltage threshold range. The reason for this is that the compensation of the feedback voltage by the compensation factor in the compensation circuit is not accurate. Therefore, the power supply voltage exceeds the safe voltage threshold range, and further the solid state disk starts a restart protection mechanism to restart the solid state disk, so that data stored in the solid state disk is lost.
To this end, the present application provides a power supply system for a storage medium. Referring to fig. 1, the system includes: a power supply module 101, a feedback circuit 102 and a compensation circuit 103. Wherein:
and a power supply module 101, configured to output a supply voltage to the storage medium.
It should be noted that, a voltage conversion device (such as a voltage transformation device) is arranged inside the power supply module, the input end of the power supply module is connected with a voltage of 12V, and the 12V voltage is passed through the voltage conversion device to obtain a supply voltage of the storage medium, such as 2.4V, 3.3V, 1.85V, and the like. The voltage obtained after conversion by the voltage conversion device is used as the power supply voltage output by the output end of the power supply module, and the output end is connected with the power supply access interface of the storage medium.
For any storage medium, the power supply voltage of the storage medium is provided with a safe voltage threshold range, and the specific values are as follows: 1.71V to 1.89V, and the safe voltage threshold range value is set according to the requirements of the power supply specification, and may also be referred to as a Device operating voltage interval in the industry. In order to ensure that the voltage value output by the power supply module is within the safe voltage threshold range as much as possible, the voltage output by the power supply module needs to be adjusted, and the adjustment process is executed by the feedback circuit 102 and the compensation circuit 103.
The feedback circuit 102 is configured to obtain a power supply voltage output by the power supply module, and generate a feedback voltage according to the power supply voltage output by the power supply module.
It is understood that the feedback circuit 102 includes a comparator and other related devices, and referring to fig. 2, a first pin of the comparator is connected to an output terminal of the power supply voltage module; the second pin of the comparator is connected with the reference voltage, and the third pin is an output pin for outputting the feedback voltage.
Specifically, the first pin of the comparator is usedSupply voltage V output by power supply voltage acquisition module0(ii) a The second pin of the comparator is used for collecting the reference voltage VT. Supply voltage V is supplied by a comparator0And a reference voltage VTAnd after comparison, obtaining a feedback voltage, and taking the feedback voltage as the output of the feedback circuit, namely outputting the feedback voltage through a third pin.
And the compensation circuit 103 is configured to receive the feedback voltage, compensate the feedback voltage by using a compensation factor in the compensation circuit, and adjust the power supply voltage output by the power supply module based on the compensated feedback voltage, so that the adjusted power supply voltage is within a safety voltage threshold range.
In this embodiment, an alternative structure of the compensation circuit is shown in fig. 3, and includes: the protection circuit comprises a protection resistor, a first capacitor and a second capacitor. The first end of the protection resistor is grounded, and the second end of the protection resistor is connected with the second end of the second capacitor; the resistance value of the protection resistor is within a preset resistance value range; the first end of the second capacitor is connected with the first end of the first capacitor, a connection point COMP of the first end of the second capacitor and the first end of the first capacitor is used as an access pin of the compensation circuit, and the access pin is used for receiving feedback voltage; the second end of the first capacitor is grounded.
The compensation factor in the compensation circuit is determined by the protection resistor, the first capacitor and the second capacitor in the compensation circuit. The protection resistor and the first capacitor are important factors influencing the compensation factor, the compensation factor of the compensation circuit is adjusted by adjusting the resistance value of the protection resistor and adjusting the capacitance value of the first capacitor, wherein the protection resistor is a main adjustment object, and the compensation factor of the compensation circuit is changed by adjusting the resistance value of the protection resistor.
It should be noted that the resistance value of the protection resistor is selected from a preset resistance value range (for example, the preset resistance value range is 3.01K Ω -5K Ω, which may vary according to practical applications). In the design process of the compensation circuit, the influence of compensation factors corresponding to the protection resistors with various resistance values on the feedback voltage is obtained, and therefore the range of the preset resistance value is determined. And the compensation factor corresponding to the protection resistor meeting the preset resistance value range can enable the compensated feedback voltage to be stabilized within the safe voltage threshold range after the power supply voltage passes through the feedback voltage.
Correspondingly, the capacitance of the first capacitor is selected from a predetermined capacitance range (e.g., the predetermined capacitance range is 1pf-100pf, which may vary according to the application). In the design process of the compensation circuit, the influence of compensation factors corresponding to the first capacitors with various capacitance values on the feedback voltage is acquired, so that the range of the preset capacitance value is determined. And the capacitance values within the preset capacitance value range can enable the compensation factor to better compensate the feedback voltage.
Specifically, as can be seen from the above description, the compensation circuit receives the feedback voltage, compensates the feedback voltage, and applies the compensated feedback voltage to the supply voltage, thereby adjusting the output of the supply voltage. For example, the feedback voltage is-0.03V, and the feedback voltage is compensated by the feedback compensation circuit to obtain a feedback voltage of-0.046V, and assuming that the supply voltage is 1.82, the supply voltage after adjustment by the feedback circuit and the compensation circuit is 1.774V. The supply voltage regulated by the feedback circuit and the compensation circuit can oscillate within a safe voltage threshold range.
According to the technical scheme, the power supply system of the storage medium is provided, and the system outputs power supply voltage to the storage medium through the power supply module; feeding back the power supply voltage output to the storage medium by the power supply module through a feedback circuit to obtain a feedback voltage; the feedback voltage is compensated by a compensation factor in the compensation circuit to obtain a supply voltage within a safe voltage threshold range. The system feeds back the power supply voltage through the feedback circuit to obtain the feedback voltage, and adjusts the feedback force of the feedback voltage through the compensation factor in the compensation circuit, so that the power supply voltage is controlled within the range of the safe voltage threshold value, and the safe power supply voltage is provided for the storage medium.
In order to facilitate understanding of the modules of the above embodiments, the present application provides a practical application process of the power supply system of the storage medium.
Suppose V1-V2 are voltage threshold ranges, where V1 is 1.71V and V2 is 1.89V
In the prior art, a power supply module provides a power supply voltage for a storage medium, and when the working state of the storage medium enters a full-write state, voltage oscillation of the power supply voltage can be greatly changed and even exceeds a safe voltage threshold range. As shown in fig. 4, the portion indicated by the arrow is the portion of the voltage oscillation beyond the safe voltage threshold, and the voltage value of the portion is 1.992V, which is greater than the maximum value of the safe voltage threshold, which is 1.89V. As can be seen from the waveform diagram shown in the oscilloscope, even the power supply voltage within the safe voltage threshold range has voltage oscillation with different intensities, and the reason for this can be seen from fig. 5, where fig. 5 shows the voltage oscillation existing in the prior art.
To this end, the present application provides a power supply system for a storage medium. Referring to fig. 1, the system includes a power supply module, a feedback circuit, and a compensation circuit.
For convenience of explaining a specific application process of the above embodiment, it is assumed that V1-V2 is a safe voltage threshold range, where V1 is 1.71V, V2 is 1.89V, and a power supply voltage output by the power supply module is 1.85. When the storage medium enters a full-write state, the load of the storage medium increases, and the corresponding supply voltage is stretched and may exceed the safe voltage threshold range. For this purpose, the supply voltage is regulated, a feedback circuit is introduced, which, in order to realize: when the power supply voltage is too low, the power supply voltage is increased; reducing the supply voltage requirement when the supply voltage is too high requires the introduction of negative feedback in the feedback circuit. If the feedback strength is small or the feedback strength is large, the supply voltage cannot meet the safe voltage threshold range. Therefore, the feedback voltage generated by the feedback circuit is introduced into the compensation circuit, and after the compensation of the compensation circuit, the output power supply voltage is stable, as shown in a waveform schematic diagram of fig. 6, the voltage oscillation is reduced, and the feedback strength can be controlled by the compensation circuit.
Most storage media are provided with a protection mechanism to prevent the transmission of accidents, for example, a solid state disk is provided with a standby power protection mechanism. The principle of the protection mechanism is almost that whether the power supply voltage of the storage medium meets the safe operation of the storage medium or not is detected. And then sets the corresponding protection mechanism.
In one example, a power supply system for a storage medium. Referring to fig. 7, the system may further include, in addition to the 101-103 module: a voltage detection module 104 and a state control module 105.
The voltage detection module 104 is configured to perform a voltage detection step, where the voltage detection step specifically includes:
acquiring power supply voltage output by a power supply module; judging whether the power supply voltage is within a safe voltage threshold range; if the power supply voltage is within the range of the safe voltage threshold value, generating a first level signal; and if the power supply voltage is not within the safe voltage threshold range, generating a second level signal.
It should be noted that one of the first level signal and the second level signal may be a high level signal, and the other is a low level signal, for example, the first level signal is a high level signal; the second level signal is a low level signal.
Specifically, the power supply voltage output by the power supply module is collected through a feedback circuit, the power supply voltage is compared with a safety voltage threshold range, and if the power supply voltage is within the safety voltage threshold range, a high level signal is generated and output to the state control module; and if the power supply voltage is not within the safe voltage threshold range, generating a low level signal and outputting the low level signal to the state control module.
A state control module 105 to: the storage medium is controlled to perform a first operation when the first level signal is received, and to perform a second operation when the second level signal is received, the first operation and the second operation being different.
The state control module controls the operating state of the storage medium. For example: the state control module controls the working state of the entry protection mechanism of the storage medium.
Specifically, when the state control module receives a high level signal, which indicates that the power supply voltage output by the power supply module is within the safe voltage threshold range, in this case, the state control module controls the storage medium to execute a first operation; to prevent the occurrence of an accident, it is necessary to set the storage medium to a second operation. Specifically, when the state control module receives the low level signal, it indicates that the power supply voltage output by the power supply module is not within the safe voltage threshold range, and in this case, the state control module controls the storage medium to execute the second operation.
Wherein: the first operation is to maintain the current working state of the storage medium; the second operation is starting delay waiting, and judging the level signal output by the voltage detection module after the delay waiting is finished; if the level signal is the first level signal, maintaining the current working state of the storage medium; if the level signal is the second level signal, the standby power protection mechanism is started.
Specifically, when the state control module receives a high level signal, the state control module indicates the storage medium to maintain the current working state; when the state control module receives a low level signal, a delay wait is started, for example: wait for 15 clock signals. After the delay waiting is finished, detecting the state of the received level signal again; if the level signal state detected again is a high level signal, it indicates that the low level signal before the delay waiting is caused by an emergency, and other steps are not needed, and the working state of the current storage medium is maintained; if the level signal state is detected again to be a low level signal state, the power supply voltage is indicated to be in fault, and under the condition, the state control module indicates the storage medium to start a standby power protection mechanism so as to prevent data in the storage medium from being lost.
The application also provides a power supply method of the storage medium. Referring to fig. 8, the method includes steps S801 to S803.
S801: a supply voltage output to the storage medium is acquired.
S802: a feedback voltage is generated according to the supply voltage.
S803: compensating the feedback voltage through a compensation factor, and adjusting the power supply voltage based on the compensated feedback voltage so that the adjusted power supply voltage is within a safe voltage threshold range.
According to the technical scheme, the power supply method of the storage medium is characterized in that power supply voltage is output to the storage medium through the power supply module; feeding back the power supply voltage output to the storage medium by the power supply module through a feedback circuit to obtain a feedback voltage; and compensating the feedback voltage through a compensation factor in the compensation circuit to obtain the power supply voltage within the safe voltage threshold range. According to the method, the feedback circuit is used for feeding back the power supply voltage to obtain the feedback voltage, the compensation factor in the compensation circuit is used for adjusting the feedback strength of the feedback voltage, and therefore the power supply voltage is controlled within the safety voltage threshold range, and the safe power supply voltage is provided for the storage medium.
In one example, referring to FIG. 9, a power supply method for a storage medium includes steps S804-S807 in addition to the above-described steps S801-S803.
S804: the supply voltage is obtained.
S805: and judging whether the power supply voltage is within the safe voltage threshold range.
S806: if the power supply voltage is within the range of the safe voltage threshold value, generating a first level signal; and if the power supply voltage is not within the safe voltage threshold range, generating a second level signal.
S807: the storage medium is controlled to perform a first operation when the first level signal is generated, and to perform a second operation when the second level signal is generated, the first operation and the second operation being different.
In one example, when the first level signal is generated, the storage medium is controlled to perform a first operation, and when the second level signal is generated, the storage medium is controlled to perform a second operation, which specifically includes:
maintaining a current operating state of the storage medium when the first level signal is generated; when a second level signal is generated, starting delay waiting, and judging the state of the level signal after the delay waiting time is over; if the level signal state is the first level signal, maintaining the current working state of the storage medium; if the level signal state is the second level signal, the standby power protection mechanism is started.
The detailed description of the steps related to the power supply method of the storage medium can refer to the power supply system embodiment of the storage medium, and is not specifically described here.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A power supply system for a storage medium, comprising:
the power supply module is used for outputting power supply voltage to the storage medium;
the feedback circuit is used for acquiring the power supply voltage output by the power supply module and generating a feedback voltage according to the power supply voltage output by the power supply module;
the compensation circuit is used for receiving the feedback voltage, compensating the feedback voltage through a compensation factor in the compensation circuit, and adjusting the power supply voltage output by the power supply module based on the compensated feedback voltage so as to enable the adjusted power supply voltage to be within a safe voltage threshold range;
wherein the compensation circuit comprises: the protection circuit comprises a protection resistor, a first capacitor and a second capacitor;
the first end of the protection resistor is grounded, and the second end of the protection resistor is connected with the second end of the second capacitor; the resistance value of the protection resistor is within a preset resistance value range;
the first end of the second capacitor is connected with the first end of the first capacitor, a connection point of the first end of the second capacitor and the first end of the first capacitor is used as an access pin of the compensation circuit, and the access pin is used for receiving the feedback voltage;
the second end of the first capacitor is grounded.
2. The power supply system for a storage medium according to claim 1, further comprising: a voltage detection module; the voltage detection module is used for executing the voltage detection steps:
acquiring the power supply voltage output by the power supply module;
judging whether the power supply voltage is within the safe voltage threshold range;
if the power supply voltage is within the safe voltage threshold range, generating a first level signal;
and if the power supply voltage is not within the safe voltage threshold range, generating a second level signal.
3. The power supply system for a storage medium according to claim 2, further comprising: a state control module; the state control module is used for:
controlling the storage medium to perform a first operation when the first level signal is received, and controlling the storage medium to perform a second operation when the second level signal is received, the first operation and the second operation being different.
4. The system according to claim 3, wherein the state control module is specifically configured to:
when the first level signal is received, maintaining the current working state of the storage medium;
when the second level signal is received, starting delay waiting, and judging the level signal output by the voltage detection module after the delay waiting is finished; if the level signal is the first level signal, maintaining the current working state of the storage medium; and if the level signal is the second level signal, starting a standby power protection mechanism.
5. The storage medium power supply system of claim 2, wherein the voltage detection module is further configured to:
and receiving an enabling signal, and executing the voltage detection step when the enabling signal is a valid signal.
6. A power supply method for a storage medium, the method being applied to a power supply system for the storage medium, the method comprising:
acquiring a power supply voltage output to a storage medium;
generating a feedback voltage according to the power supply voltage;
compensating the feedback voltage through a compensation factor, and adjusting the power supply voltage based on the compensated feedback voltage so as to enable the adjusted power supply voltage to be within a safe voltage threshold range;
acquiring the power supply voltage;
judging whether the power supply voltage is within the safe voltage threshold range;
if the power supply voltage is within the safe voltage threshold range, generating a first level signal;
if the power supply voltage is not within the safe voltage threshold range, generating a second level signal;
controlling the storage medium to perform a first operation when the first level signal is generated, and controlling the storage medium to perform a second operation when the second level signal is generated, the first operation and the second operation being different.
7. The method according to claim 6, wherein the controlling the storage medium to perform a first operation when the first level signal is generated and to perform a second operation when the second level signal is generated comprises:
maintaining a current operating state of the storage medium when the first level signal is generated;
when the second level signal is generated, starting delay waiting, and judging the state of the level signal after the delay waiting time is over; if the level signal state is the first level signal, maintaining the current working state of the storage medium; and if the level signal state is the second level signal, starting a standby power protection mechanism.
8. The method for supplying power to a storage medium according to claim 6, further comprising: and receiving an enable signal, and executing the step of acquiring the power supply voltage when the enable signal is a valid signal.
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| JP3871659B2 (en) * | 2003-06-25 | 2007-01-24 | ローム株式会社 | Power circuit |
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| CN208141254U (en) * | 2018-05-21 | 2018-11-23 | 郑州云海信息技术有限公司 | A kind of circuit adjusting veneer voltage |
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