CN113674791B - Power supply control method, device, equipment and medium of SSD power supply chip - Google Patents
Power supply control method, device, equipment and medium of SSD power supply chip Download PDFInfo
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Abstract
The application discloses a power supply control method, a device, equipment and a medium of an SSD power supply chip, wherein the method comprises the following steps: when the power supply chip of the SSD is in a COT power supply mode, determining an inductance value range of an inductance in the power supply chip according to a first mathematical model so as to enable output current ripple of the power supply chip to be kept within a first preset range; determining a capacitance value range of a capacitor in the power supply chip according to the second mathematical model so that the frequency of the output voltage of the power supply chip can be kept within a second preset range; the value of the inductor in the power supply chip is set according to the value range of the inductor, and the value of the capacitor in the power supply chip is set according to the value range of the capacitor, so that the power supply chip is controlled. Therefore, the inductance parameter and the capacitance parameter of the SSD power supply chip are accurately adjusted and set according to the mathematical model, and therefore the power supply stability of the SSD power supply chip and the reliability of SSD storage data can be guaranteed.
Description
Technical Field
The invention relates to the technical field of servers, in particular to a power supply control method, a device, equipment and a medium of an SSD power supply chip.
Background
Because SSD (Solid State Disk) has good read-write performance, SSD has been widely used, however, the power supply stability of SSD power supply chips can affect the data storage capacity of SSD. In the prior art, the inductance and the capacitance on the power supply chip are generally set to be 1.5uH and 810uF respectively according to the factory requirement of SSD, however, under the setting parameters, the output voltage frequency of the power supply chip always jumps between 500kHz and 800kHz, and the output current ripple of the power supply chip has larger fluctuation. Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of current ripple output by an SSD power supply chip in the prior art, and fig. 2 is a frequency variation diagram of voltage output by the SSD power supply chip in the prior art.
When the current ripple output by the SSD power supply chip exceeds a preset range or the frequency of the output voltage of the power supply chip is in huge jump, the data storage process of the SSD is abnormal. Currently, there is no more effective solution to this technical problem.
Disclosure of Invention
In view of the above, the present invention is directed to a power supply control method, apparatus, device and medium for an SSD power supply chip, so as to ensure power supply stability of the SSD power supply chip and reliability of SSD storage data. The specific scheme is as follows:
a power supply control method of an SSD power supply chip comprises the following steps:
when a power supply chip of an SSD is in a COT power supply mode, determining an inductance value range of an inductance in the power supply chip according to a first mathematical model so as to enable output current ripple of the power supply chip to be kept within a first preset range;
determining a capacitance value range of a capacitor in the power supply chip according to the second mathematical model so that the frequency of the output voltage of the power supply chip can be kept within a second preset range;
setting the value of the inductor in the power supply chip according to the value range of the inductor, and setting the value of the capacitor in the power supply chip according to the value range of the capacitor so as to control the power supply of the power supply chip;
wherein the expression of the first mathematical model is:
wherein L is the equivalent inductance value of all the inductors on the power supply chip, V out Δi for the output voltage of the power supply chip L The current ripple output by the power supply chip is f is the working frequency of the power supply chip, V in An input voltage for the power supply chip;
the expression of the second mathematical model is:
wherein ESR is equivalent series resistance value of all resistors on the power supply chip, C out For the equivalent capacitance value f of all the capacitors on the power supply chip sw And the switching frequency of the power supply chip is set.
Preferably, the power supply chip is specifically an RTQ power supply chip.
Preferably, the method further comprises:
determining the ESR according to a third mathematical model;
wherein, the mathematical expression of ESR is:
wherein V is out For the output voltage of the power supply chip, D is duty cycle, I IND And the effective current value of the power supply chip is obtained.
Preferably, the method further comprises:
and resetting the inductance value range by using the inductance empirical coefficient.
Preferably, the value range of the inductance empirical coefficient is 0.3-0.5.
Preferably, the method further comprises:
and correcting the inductance empirical coefficient according to the waveform diagram of the output voltage.
Correspondingly, the invention also discloses a power supply control device of the SSD power supply chip, which comprises:
the inductance determining module is used for determining an inductance value range of an inductance in the power supply chip according to a first mathematical model when the power supply chip of the SSD is in a COT power supply mode so as to enable output current ripple of the power supply chip to be kept within a first preset range;
the capacitance determining module is used for determining a capacitance value range of a capacitance in the power supply chip according to the second mathematical model so that the frequency of the output voltage of the power supply chip can be kept within a second preset range;
the parameter setting module is used for setting the value of the inductor in the power supply chip according to the value range of the inductor, and setting the value of the capacitor in the power supply chip according to the value range of the capacitor so as to control the power supply of the power supply chip;
wherein the expression of the first mathematical model is:
wherein L is the equivalent inductance value of all the inductors on the power supply chip, V out For the output voltage of the power supply chip, ΔI is the current ripple output by the power supply chip, f is the working frequency of the power supply chip, V in An input voltage for the power supply chip;
the expression of the second mathematical model is:
wherein ESR is equivalent series resistance value of all resistors on the power supply chip, C out For the equivalent capacitance value f of all the capacitors on the power supply chip sw And the switching frequency of the power supply chip is set.
Correspondingly, the invention also discloses power supply control equipment of the SSD power supply chip, which comprises:
a memory for storing a computer program;
a processor for implementing the steps of a power supply control method of an SSD power supply chip as disclosed above when executing the computer program.
Correspondingly, the invention also discloses a computer readable storage medium, wherein the computer readable storage medium is stored with a computer program, and the computer program realizes the steps of the power supply control method of the SSD power supply chip when being executed by a processor.
In the invention, when the power supply chip of the SSD is in the COT power supply mode, determining the inductance value range of the inductor in the power supply chip according to the first mathematical model so as to keep the output current ripple of the power supply chip within a first preset range, and determining the capacitance value range of the capacitor in the power supply chip according to the second mathematical model so as to keep the frequency of the output voltage of the power supply chip within a second preset range; and then setting the value of the inductor in the power supply chip according to the value range of the inductor, and setting the value of the capacitor in the power supply chip according to the value range of the capacitor so as to control the power supply of the power supply chip. Through the arrangement mode, the inductance parameter and the capacitance parameter of the SSD power supply chip are accurately adjusted and set according to the mathematical model, so that the output current ripple of the SSD power supply chip can be kept within a first preset range, and the frequency of the output voltage of the power supply chip can be kept within a second preset range. Therefore, the power supply stability of the SSD power supply chip and the reliability of SSD storage data can be ensured. Correspondingly, the power supply control device, the equipment and the medium of the SSD power supply chip have the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of current ripple output by an SSD power chip in the prior art;
FIG. 2 is a diagram showing the frequency variation of the output voltage of an SSD power chip in the prior art
Fig. 3 is a flowchart of a power supply control method of an SSD power supply chip according to an embodiment of the invention;
fig. 4 is a schematic diagram of a power supply chip for supplying power to an SSD according to an embodiment of the invention;
FIG. 5 is a schematic diagram of the output current ripple of the power supply chip after the inductance value in the SSD power supply chip is set by using the first mathematical model;
FIG. 6 is a schematic diagram of the output voltage of the power supply chip after the capacitor value in the SSD power supply chip is set by using the second mathematical model;
fig. 7 is a block diagram of a power supply control device of an SSD power supply chip according to an embodiment of the invention;
fig. 8 is a block diagram of a power supply control device of an SSD power supply chip according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 3, fig. 3 is a flowchart of a power supply control method of an SSD power supply chip according to an embodiment of the invention, the power supply control method including:
step S11: when the power supply chip of the SSD is in a COT power supply mode, determining an inductance value range of an inductance in the power supply chip according to a first mathematical model so as to enable output current ripple of the power supply chip to be kept within a first preset range;
step S12: determining a capacitance value range of a capacitor in the power supply chip according to the second mathematical model so that the frequency of the output voltage of the power supply chip can be kept within a second preset range;
step S13: setting the value of the inductor in the power supply chip according to the value range of the inductor, and setting the value of the capacitor in the power supply chip according to the value range of the capacitor so as to control the power supply of the power supply chip;
wherein the expression of the first mathematical model is:
wherein L is the equivalent inductance value of all the inductors on the power supply chip, V out For supplying the output voltage of the chip, ΔI L For the current ripple output by the power supply chip, f is the working frequency of the power supply chip, V in An input voltage for the power supply chip;
the expression of the second mathematical model is:
wherein ESR is equivalent series resistance value of all resistors on the power supply chip, C out For supplying the equivalent capacitance value of all the capacitors on the chip, f sw Is the switching frequency of the power supply chip.
In this embodiment, a power supply control method for an SSD power supply chip is provided, by which parameters of the SSD power supply chip are set, so that an output voltage of the SSD power supply chip can be kept within a controllable preset range, and reliability of data stored in the SSD is ensured.
Referring to fig. 4, fig. 4 is a schematic diagram of a power supply chip for supplying power to an SSD according to an embodiment of the invention. When the power supply chip of the SSD is in a COT (Constant On-Time control) power supply mode, firstly, the inductance value range of an inductor in the power supply chip is determined according to a first mathematical model so that the output current ripple of the power supply chip is kept within a first preset range, and the capacitance value range of a capacitor in the power supply chip is determined according to a second mathematical model so that the frequency of the output voltage of the power supply chip can be kept within a second preset range. Namely, the output current ripple of the power supply chip is kept within a first preset range as a constraint condition, and the inductance value range of the inductor in the power supply chip is determined according to a first mathematical model; and then, the frequency of the output voltage of the power supply chip can be kept within a second preset range, and the capacitance value range of the capacitor in the power supply chip is determined according to a second mathematical model.
It will be appreciated that when the input voltage and the output voltage of the SSD power supply chip are given, the inductance and the operating frequency of the power supply chip determine the output current ripple of the power supply chip, where the current ripple increases with the increase of the input voltage of the power supply chip and decreases with the increase of the inductance, and there is the following relationship:
wherein DeltaI L For supplying current ripple output by the chip, V out For the output voltage of the power supply chip, f is the working frequency of the power supply chip, L is the equivalent inductance value of all the inductors on the power supply chip, V in Is the input voltage of the power supply chip.
As can be seen from the above formula, the maximum current ripple of the power supply chip will occur at the maximum input voltage of the power supply chip, so, in order to ensure that the current ripple of the power supply chip is kept below the specified maximum value, the range of the inductance in the power supply chip should be selected according to the first mathematical model, that is:
it is obvious that the range of the inductance in the power supply chip can be calculated by means of the first mathematical model. Referring to fig. 5, fig. 5 is a schematic diagram of the output current ripple of the power supply chip after the inductance value in the SSD power supply chip is set by using the first mathematical model. In addition to the frequency of the output voltage of the power supply chip being affected by the value of the inductance in the power supply chip, the frequency of the output voltage of the power supply chip is also affected by the value of the capacitance in the power supply chip. Therefore, in practical application, in order to ensure that the power supply loop of the SSD power supply chip can be kept in a relatively stable state, the power supply loop is turned onThe operating frequency f of the power supply chip at 0dB is often required 0 Lower than 1/4 of the switching frequency of the power supply chip, namely:
wherein ESR is equivalent series resistance value of all resistors on the power supply chip, C out For supplying the equivalent capacitance value of all the capacitors on the chip, f sw Is the switching frequency of the power supply chip.
From the above discussion, the capacitance value range of the capacitor in the power supply chip can be determined according to the second mathematical model. Referring to fig. 6, fig. 6 is a schematic diagram of the output voltage of the power supply chip after the capacitor value in the SSD power supply chip is set by using the second mathematical model. It can be thought that when the inductance value range and the capacitance value range of the power supply chip are calculated according to the first mathematical model and the second mathematical model, the value of the inductance in the power supply chip is set according to the inductance value range, and the value of the capacitance in the power supply chip is set according to the capacitance value range, so that the output current ripple of the power supply chip can be ensured to be kept within a first preset range, and the frequency of the output voltage of the power supply chip can be ensured to be kept within a second preset range. It is conceivable that when the output current ripple of the power supply chip is maintained within the first preset range and the frequency of the output voltage of the power supply chip can be maintained within the second preset range, the reliability of the SSD storage data can be further ensured.
It can be seen that, in this embodiment, when the power supply chip of the SSD is in the COT power supply mode, the inductance value range of the inductor in the power supply chip is determined according to the first mathematical model, so that the output current ripple of the power supply chip is kept within the first preset range, and the capacitance value range of the capacitor in the power supply chip is determined according to the second mathematical model, so that the frequency of the output voltage of the power supply chip can be kept within the second preset range; and then setting the value of the inductor in the power supply chip according to the value range of the inductor, and setting the value of the capacitor in the power supply chip according to the value range of the capacitor so as to control the power supply of the power supply chip. Through the arrangement mode, the inductance parameter and the capacitance parameter of the SSD power supply chip are accurately adjusted and set according to the mathematical model, so that the output current ripple of the SSD power supply chip can be kept within a first preset range, and the frequency of the output voltage of the power supply chip can be kept within a second preset range. Therefore, the power supply stability of the SSD power supply chip and the reliability of SSD storage data can be ensured.
Based on the above embodiments, the technical solution is further described and optimized in this embodiment, and as a preferred implementation manner, the power supply chip is specifically an RTQ power supply chip.
It can be understood that, because the RTQ power chip is a high-performance low-dropout linear voltage regulator, not only has good power ripple suppression capability, but also can perform stable operation in a temperature range of-40 ℃ to 125 ℃, when the power supply chip in the SSD is set as the RTQ power chip, the working performance of the power supply chip can be relatively improved.
Based on the above embodiment, this embodiment further describes and optimizes a technical solution, and as a preferred implementation manner, the power supply control method further includes:
determining ESR according to the third mathematical model;
wherein, the mathematical expression of ESR is:
wherein V is out For the output voltage of the power supply chip, D is duty cycle, I IND Is the effective current value of the power supply chip.
In the present embodiment, a specific calculation method of ESR, that is, determination of ESR according to the third mathematical model is provided. It can be thought that when the mathematical model is used to calculate the ESR, the calculation result of the ESR can be more accurate and reliable, so that the reliability of the capacitance value range of the power supply chip can be further improved.
Based on the above embodiment, this embodiment further describes and optimizes a technical solution, and as a preferred implementation manner, the power supply control method further includes:
and resetting the inductance value range by using the inductance empirical coefficient.
It will be appreciated that in practical applications, the actual value of the inductance of the electronic component is not output according to the parameter marked on the inductance, and there is usually a certain difference between the actual output value of the inductance and the reference output value. Based on this factor, in this embodiment, after the inductance value range of the inductance in the power supply chip is determined according to the first mathematical model, the inductance value range is further reset by using the inductance empirical coefficient, so as to ensure the accuracy in setting the inductance value of the power supply chip.
As a preferred embodiment, the value of the empirical coefficient of inductance is in the range of 0.3 to 0.5.
According to a large amount of experimental measurement data, the ratio between the actual output value and the reference output value of the inductor is usually maintained between 0.3 and 0.5, so in the embodiment, the value range of the empirical coefficient of the inductor can be set between 0.3 and 0.5, and the accuracy and the reliability of the value of the inductor of the power supply chip can be relatively ensured.
As a preferred embodiment, the above power supply control method further includes:
and correcting the inductance experience coefficient according to the waveform diagram of the output voltage.
It can be understood that in practical application, the waveform change condition of the output voltage of the SSD power supply chip has a strong correlation with the inductance value, the capacitance value and the inductance empirical coefficient of the power supply chip, so in this embodiment, the inductance empirical coefficient is corrected according to the waveform diagram of the output voltage of the power supply chip. It can be thought that after the inductance empirical coefficient is corrected by using the waveform diagram of the output voltage of the power supply chip, the accuracy and reliability of the value of the inductance empirical coefficient can be further ensured.
Referring to fig. 7, fig. 7 is a block diagram of a power supply control device of an SSD power supply chip according to an embodiment of the invention, the power supply control device includes:
the inductance determining module 21 is configured to determine, according to a first mathematical model, an inductance value range of an inductance in the power supply chip when the power supply chip of the SSD is in a COT power supply mode, so that an output current ripple of the power supply chip is kept within a first preset range;
the capacitance determining module 22 is configured to determine a capacitance value range of a capacitance in the power supply chip according to the second mathematical model, so that a frequency of an output voltage of the power supply chip can be kept within a second preset range;
the parameter setting module 23 is configured to set the value of the inductance in the power supply chip according to the value range of the inductance, and set the value of the capacitance in the power supply chip according to the value range of the capacitance, so as to perform power supply control on the power supply chip;
wherein the expression of the first mathematical model is:
wherein L is the equivalent inductance value of all the inductors on the power supply chip, V out For the output voltage of the power supply chip, deltaI is the current ripple output by the power supply chip, f is the working frequency of the power supply chip, V in An input voltage for the power supply chip;
the expression of the second mathematical model is:
wherein ESR is equivalent series resistance value of all resistors on the power supply chip, C out For supplying the equivalent capacitance value of all the capacitors on the chip, f sw Is the switching frequency of the power supply chip.
The power supply control device of the SSD power supply chip has the beneficial effects of the power supply control method of the SSD power supply chip.
Referring to fig. 8, fig. 8 is a block diagram of a power supply control device of an SSD power supply chip according to an embodiment of the invention, the power supply control device includes:
a memory 31 for storing a computer program;
a processor 32 for implementing the steps of a power supply control method for an SSD power supply chip as disclosed above when executing a computer program.
The power supply control device of the SSD power supply chip provided by the embodiment of the invention has the beneficial effects of the power supply control method of the SSD power supply chip.
Correspondingly, the embodiment of the invention also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the steps of the power supply control method of the SSD power supply chip are realized when the computer program is executed by a processor.
The computer readable storage medium provided by the embodiment of the invention has the beneficial effects of the power supply control method of the SSD power supply chip.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The power supply control method, device, equipment and medium of the SSD power supply chip provided by the invention are described in detail, and specific examples are applied to illustrate the principle and implementation of the invention, and the description of the above examples is only used for helping to understand the method and core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (9)
1. The power supply control method of the solid state disk power supply chip is characterized by comprising the following steps of:
when a power supply chip of the solid state disk is in a fixed on-time power supply mode, determining an inductance value range of an inductance in the power supply chip according to a first mathematical model so as to keep an output current ripple of the power supply chip within a first preset range;
determining a capacitance value range of a capacitor in the power supply chip according to a second mathematical model so that the frequency of the output voltage of the power supply chip can be kept within a second preset range;
setting the value of the inductor in the power supply chip according to the value range of the inductor, and setting the value of the capacitor in the power supply chip according to the value range of the capacitor so as to control the power supply of the power supply chip;
wherein the expression of the first mathematical model is:
；
in the method, in the process of the invention,equivalent inductance value for all inductances on the power supply chip,/->For the output voltage of the power supply chip, < >>Current ripple output for the power supply chip, < >>For the operating frequency of the power supply chip, +.>An input voltage for the power supply chip;
the expression of the second mathematical model is:
；
in the method, in the process of the invention,for the equivalent series resistance value of all resistors on the power supply chip, < >>Equivalent capacitance value for all capacitances on the power supply chip, < >>And the switching frequency of the power supply chip is set.
2. The power supply control method according to claim 1, wherein the power supply chip is specifically an RTQ power supply chip.
3. The power supply control method according to claim 1, characterized by further comprising:
determining the third mathematical model；
Wherein the saidThe mathematical expression of (2) is:
；
in the method, in the process of the invention,is duty cycle, +.>And the effective current value of the power supply chip is obtained.
4. A power supply control method according to any one of claims 1 to 3, characterized by further comprising:
and resetting the inductance value range by using the inductance empirical coefficient.
5. The power supply control method according to claim 4, wherein the value range of the inductance empirical factor is 0.3-0.5.
6. The power supply control method according to claim 4, characterized by further comprising:
and correcting the inductance empirical coefficient according to the waveform diagram of the output voltage.
7. The utility model provides a power supply control device of solid state disk power supply chip which characterized in that includes:
the inductance determining module is used for determining an inductance value range of an inductance in the power supply chip according to a first mathematical model when the power supply chip of the solid state disk is in a fixed on-time power supply mode so as to enable output current ripple of the power supply chip to be kept within a first preset range;
the capacitor determining module is used for determining a capacitor value range of a capacitor in the power supply chip according to a second mathematical model so that the frequency of the output voltage of the power supply chip can be kept within a second preset range;
the parameter setting module is used for setting the value of the inductor in the power supply chip according to the value range of the inductor, and setting the value of the capacitor in the power supply chip according to the value range of the capacitor so as to control the power supply of the power supply chip;
wherein the expression of the first mathematical model is:
；
in the method, in the process of the invention,equivalent inductance value for all inductances on the power supply chip,/->For the output voltage of the power supply chip, < >>Current ripple output for the power supply chip, < >>For the operating frequency of the power supply chip, < >>An input voltage for the power supply chip;
the expression of the second mathematical model is:
；
in the method, in the process of the invention,for the equivalent series resistance value of all resistors on the power supply chip, < >>Equivalent capacitance value for all capacitances on the power supply chip, < >>And the switching frequency of the power supply chip is set.
8. The utility model provides a power supply control equipment of solid state disk power supply chip which characterized in that includes:
a memory for storing a computer program;
a processor, configured to implement the steps of a power supply control method of a solid state disk power supply chip according to any one of claims 1 to 6 when executing the computer program.
9. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and the computer program when executed by a processor implements the steps of a method for controlling power supply of a solid state disk power supply chip according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110982912.3A CN113674791B (en) | 2021-08-25 | 2021-08-25 | Power supply control method, device, equipment and medium of SSD power supply chip |
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| CN108899056A (en) * | 2018-06-28 | 2018-11-27 | 郑州云海信息技术有限公司 | A kind of control system and SSD of main control chip |
| CN112286338A (en) * | 2020-11-09 | 2021-01-29 | 维沃移动通信有限公司 | Chip control method, chip control device, electronic device, and storage medium |
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| CN108899056A (en) * | 2018-06-28 | 2018-11-27 | 郑州云海信息技术有限公司 | A kind of control system and SSD of main control chip |
| CN112286338A (en) * | 2020-11-09 | 2021-01-29 | 维沃移动通信有限公司 | Chip control method, chip control device, electronic device, and storage medium |
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