阅读说明：本技术 一种ssd供电芯片的供电控制方法、装置、设备及介质 (Power supply control method, device, equipment and medium for SSD power supply chip ) 是由 张兆峰 王瑞杰 华要宇 崔学涛 于 2021-08-25 设计创作，主要内容包括：本申请公开了一种SSD供电芯片的供电控制方法、装置、设备及介质,该方法包括：当SSD的供电芯片为COT供电模式时,则根据第一数学模型确定供电芯片中电感的电感取值范围,以使供电芯片的输出电流纹波保持在第一预设范围之内；根据第二数学模型确定供电芯片中电容的电容取值范围,以使供电芯片输出电压的频率能够保持在第二预设范围之内；根据电感取值范围对供电芯片中电感的取值进行设定,并根据电容取值范围对供电芯片中电容的取值进行设定,以对供电芯片进行供电控制。这样就相当于是根据数学模型对SSD供电芯片的电感参数和电容参数进行了精确调整与设定,由此就可以保证SSD供电芯片的供电稳定性,以及SSD存储数据的可靠性。(The application discloses a power supply control method, a device, equipment and a medium for 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 inductor 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 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 setting the value of the inductor in the power supply chip according to the inductance value range, and setting the value of the capacitor in the power supply chip according to the capacitor value range so as to control the power supply of the power supply chip. Therefore, 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 power supply stability of the SSD power supply chip and the reliability of data stored in the SSD can be ensured.)

1. A power supply control method of an SSD power supply chip is characterized by comprising the following steps:

when a power supply chip of the SSD is in a COT power supply mode, determining an inductance value range of an inductor 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 the second mathematical model so as to enable the frequency of the output voltage of the power supply chip to be kept within a second preset range;

setting the value of the inductor in the power supply chip according to the inductance value range, and setting the value of the capacitor in the power supply chip according to the capacitor value range 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 inductors on the power supply chip, V_outThe output voltage, Δ I, for the power supply chip_LThe current ripple outputted by the power supply chip is f is the working frequency of the power supply chip, V_inThe input voltage of the power supply chip;

the expression of the second mathematical model is:

in the formula, ESR is equivalent series resistance value of all resistors on the power supply chip, C_outIs the equivalent capacitance value, f, of all capacitors on the power supply chip_swThe switching frequency of the power supply chip.

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 ESR according to a third mathematical model;

wherein, the mathematical expression of ESR is:

in the formula, V_outThe output voltage of the power supply chip, D is the duty ratio, I_INDThe effective current value of the power supply chip.

4. The power supply control method according to any one of claims 1 to 3, characterized by further comprising:

and resetting the value range of the inductor by using the empirical coefficient of the inductor.

5. The power supply control method according to claim 4, wherein the empirical coefficient of inductance is in a range of 0.3 to 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 oscillogram of the output voltage.

7. A power supply control device of an SSD power supply chip is characterized by comprising:

the device comprises an inductance determining module, a power supply module and a control module, wherein the inductance determining module is used for determining an inductance value range of an inductance in a 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 keep an output current ripple of the power supply chip within a first preset range;

the capacitance determining module is used for determining a capacitance value range of a capacitor in the power supply chip according to the second mathematical model so as to enable the frequency of the output voltage of the power supply chip to 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 inductance value range and setting the value of the capacitor in the power supply chip according to the capacitor value range 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 inductors on the power supply chip, V_outFor the output voltage of the power supply chip, delta I is the current ripple output by the power supply chip, f is the working frequency of the power supply chip, V_inThe input voltage of the power supply chip;

the expression of the second mathematical model is:

in the formula, ESR is equivalent series resistance value of all resistors on the power supply chip, C_outIs the equivalent capacitance value, f, of all capacitors on the power supply chip_swThe switching frequency of the power supply chip.

8. A power supply control device of an SSD power supply chip, characterized by comprising:

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 claimed in any of claims 1 to 6 when executing the computer program.

9. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the steps of a power supply control method of an SSD power supply chip as claimed in any of claims 1 to 6.

Technical Field

The invention relates to the technical field of servers, in particular to a power supply control method, a power supply control device, power supply equipment and a power supply control medium for an SSD power supply chip.

Background

Since an SSD (Solid State Disk) has good read/write performance, the SSD is widely used, however, the power supply stability of the SSD power supply chip may affect the data storage capability of the SSD. In the prior art, generally, the inductor and the capacitor on the power supply chip are respectively set to 1.5uH and 810uF according to the factory requirements of the SSD, but under the set parameters, the output voltage frequency of the power supply chip is always jumped between 500kHz and 800kHz, and the output current ripple of the power supply chip fluctuates greatly. Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of current ripples output by an SSD power supply chip in the prior art, and fig. 2 is a frequency variation diagram of an output voltage of 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 jumps greatly, the data storage process of the SSD is abnormal. At present, no effective solution exists for the technical problem.

Disclosure of Invention

In view of the above, the present invention provides a power supply control method, device, apparatus 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 the SSD is in a COT power supply mode, determining an inductance value range of an inductor 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 the second mathematical model so as to enable the frequency of the output voltage of the power supply chip to be kept within a second preset range;

setting the value of the inductor in the power supply chip according to the inductance value range, and setting the value of the capacitor in the power supply chip according to the capacitor value range 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 inductors on the power supply chip, V_outThe output voltage, Δ I, for the power supply chip_LThe current ripple outputted by the power supply chip is f is the working frequency of the power supply chip, V_inThe input voltage of the power supply chip;

the expression of the second mathematical model is:

in the formula, ESR is equivalent series resistance value of all resistors on the power supply chip, C_outIs the equivalent capacitance value, f, of all capacitors on the power supply chip_swThe switching frequency of the power supply chip.

Preferably, the power supply chip is specifically an RTQ power supply chip.

Preferably, the method further comprises the following steps:

determining the ESR according to a third mathematical model;

wherein, the mathematical expression of ESR is:

in the formula, V_outThe output voltage of the power supply chip, D is the duty ratio, I_INDThe effective current value of the power supply chip.

Preferably, the method further comprises the following steps:

and resetting the value range of the inductor by using the empirical coefficient of the inductor.

Preferably, the value range of the inductance empirical coefficient is 0.3-0.5.

Preferably, the method further comprises the following steps:

and correcting the inductance empirical coefficient according to the oscillogram of the output voltage.

Correspondingly, the invention also discloses a power supply control device of the SSD power supply chip, which comprises:

the device comprises an inductance determining module, a power supply module and a control module, wherein the inductance determining module is used for determining an inductance value range of an inductance in a 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 keep an output current ripple of the power supply chip within a first preset range;

the capacitance determining module is used for determining a capacitance value range of a capacitor in the power supply chip according to the second mathematical model so as to enable the frequency of the output voltage of the power supply chip to 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 inductance value range and setting the value of the capacitor in the power supply chip according to the capacitor value range 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 inductors on the power supply chip, V_outFor the output voltage of the power supply chip, delta I is the current ripple output by the power supply chip, f is the working frequency of the power supply chip, V_inThe input voltage of the power supply chip;

the expression of the second mathematical model is:

in the formula, ESR is equivalent series resistance value of all resistors on the power supply chip, C_outIs the equivalent capacitance value, f, of all capacitors on the power supply chip_swThe switching frequency of the power supply chip.

Correspondingly, the invention also discloses a power supply control device of the SSD power supply chip, which comprises:

a memory for storing a computer program;

a processor for implementing the steps of the power supply control method of the SSD power supply chip as disclosed in the foregoing when executing the computer program.

Correspondingly, the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the steps of the power supply control method of the SSD power supply chip are realized.

Therefore, in the invention, when the power supply chip of the SSD is in the COT power supply mode, the inductance value range of the inductance in the power supply chip is determined according to the first mathematical model so as to keep the output current ripple of the power supply chip within the first preset range, and the capacitance value range of the capacitance in the power supply chip is determined according to the second mathematical model so as to keep the frequency of the output voltage of the power supply chip 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 data stored by the SSD 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 used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic diagram of current ripples output by an SSD power supply chip in the prior art;

FIG. 2 is a diagram of the frequency variation of the output voltage of the SSD power supply 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 present invention;

fig. 4 is a schematic diagram illustrating a power supply chip according to an embodiment of the present invention supplying power to an SSD;

fig. 5 is a schematic diagram of an output current ripple of a power supply chip after an inductance value in an SSD power supply chip is set by using a first mathematical model;

fig. 6 is a schematic diagram of the output voltage of the power supply chip after the second mathematical model is used to set the value of the capacitance in the SSD power supply chip;

fig. 7 is a structural diagram of a power supply control device of an SSD power supply chip according to an embodiment of the invention;

fig. 8 is a structural diagram of a power supply control device of an SSD power supply chip according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 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 present invention, where the power supply control method includes:

step S11: when the power supply chip of the SSD is in a COT power supply mode, determining an inductance value range of an inductor 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;

step S12: determining a capacitance value range of a 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;

step S13: setting the value of the inductor in the power supply chip according to the inductance value range, and setting the value of the capacitor in the power supply chip according to the capacitor value range 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 of all inductors on the power supply chip, V_outFor supplying the output voltage of the chip, Δ I_LThe current ripple output by the power supply chip, f is the working frequency of the power supply chip, V_inThe input voltage is the input voltage of the power supply chip;

the expression of the second mathematical model is:

where ESR is the equivalent series resistance of all resistors on the power supply chip, C_outTo the equivalent capacitance value of all capacitors on the power supply chip, f_swThe switching frequency of the power supply chip.

In this embodiment, a power supply control method for an SSD power supply chip is provided, where parameters of the SSD power supply chip are set by the method, 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 illustrating a power supply chip for supplying power to an SSD according to an embodiment of the invention. When a power supply chip of the SSD is in a COT (Constant On-Time control mode), an inductance value range of an inductance in the power supply chip is determined according to a first mathematical model to keep an output current ripple of the power supply chip within a first preset range, and a capacitance value range of a capacitance in the power supply chip is determined according to a second mathematical model to keep a frequency of an output voltage of the power supply chip 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 inductance in the power supply chip is determined according to the 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 can be understood 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, wherein 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 the following relationship exists:

in the formula,. DELTA.I_LCurrent ripple, V, output for power supply chip_outFor 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 inductors on the power supply chip, and V_inIs 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 appear at the maximum input voltage of the power supply chip, so to ensure that the current ripple of the power supply chip can be kept below the specified maximum value, the value range of the inductance in the power supply chip should be selected according to the first mathematical model, that is:

obviously, the value range of the inductance in the power supply chip can be calculated through the first mathematical model. Referring to fig. 5, fig. 5 is a schematic diagram of an output current ripple of a power supply chip after an inductance value in an SSD power supply chip is set by using a first mathematical model. Besides the value of the inductor in the power supply chip can affect the frequency of the output voltage of the power supply chip, the value of the capacitor in the power supply chip can also affect the frequency of the output voltage of the power supply chip. Therefore, in practical applications, in order to ensure that the power loop of the SSD power supply chip can be maintained in a relatively stable state, the operating frequency f of the power supply chip at 0dB is usually required₀1/4 below the switching frequency of the power supply chip, that is:

where ESR is the equivalent series resistance of all resistors on the power supply chip, C_outTo the equivalent capacitance value of all capacitors on the power supply chip, f_swThe switching frequency of the power supply chip.

Through 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 second mathematical model is used to set the value of the capacitor in the SSD power supply chip. 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 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. It is conceivable that when the output current ripple of the power supply chip is kept within the first preset range and the frequency of the output voltage of the power supply chip is kept within the second preset range, the reliability of the SSD storing 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 inductance 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 capacitance 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 data stored by the SSD can be ensured.

Based on the above embodiments, the present embodiment further describes and optimizes the technical solution, and as a preferred implementation, 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 regulator, not only has good power ripple rejection capability, but also can stably operate in a temperature range of-40 ℃ to 125 ℃, when the power supply chip in the SSD is set as the RTQ power chip, the operating performance of the power supply chip can be relatively improved.

Based on the foregoing embodiment, this embodiment further describes and optimizes the technical solution, and as a preferred implementation, the power supply control method further includes:

determining ESR according to the third mathematical model;

wherein, the mathematical expression of ESR is:

in the formula, V_outFor the output voltage of the power supply chip, D is the duty ratio, I_INDThe effective current value of the power supply chip.

In the present embodiment, a specific calculation method of the ESR is provided, that is, the ESR is determined according to the third mathematical model. It is conceivable that, when the ESR is calculated by using a mathematical model, the calculation result of the ESR can be made more accurate and reliable, and thus, the reliability of the capacitance value range of the power supply chip can be further improved.

Based on the foregoing embodiment, this embodiment further describes and optimizes the technical solution, and as a preferred implementation, the power supply control method further includes:

and resetting the value range of the inductor by using the empirical coefficient of the inductor.

It can be understood 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 consideration of the factor, in the 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 reset by using the inductance empirical coefficient, and thus, the accuracy in setting the inductance value of the power supply chip is ensured.

As a preferred embodiment, the value range of the inductance empirical coefficient is 0.3-0.5.

The ratio of the actual output value of the inductor to the reference output value is usually maintained between 0.3 and 0.5 according to a large amount of experimental measurement data, so that the value range of the empirical coefficient of the inductor can be set to 0.3 to 0.5 in the embodiment, and the accuracy and reliability of the value of the inductor of the power supply chip can be relatively guaranteed.

As a preferred embodiment, the power supply control method further includes:

and correcting the inductance empirical coefficient according to the oscillogram of the output voltage.

It can be understood that, in practical applications, the waveform variation 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 also corrected according to the waveform diagram of the output voltage of the power supply chip. It can be thought that after the inductance empirical factor is corrected by using the oscillogram of the output voltage of the power supply chip, the accuracy and reliability of the value of the inductance empirical factor can be further ensured.

Referring to fig. 7, fig. 7 is a structural diagram of a power supply control device of an SSD power supply chip according to an embodiment of the present invention, where the power supply control device includes:

the inductance determining module 21 is configured to determine, when the power supply chip of the SSD is in the COT power supply mode, an inductance value range of an inductance in the power supply chip according to the first mathematical model, 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 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 parameter setting module 23 is configured to set a value of an inductance in the power supply chip according to the inductance value range, and set a value of a capacitance in the power supply chip according to the capacitance value range, 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 of all inductors on the power supply chip, V_outFor the output voltage of the power supply chip, delta I is the current ripple output by the power supply chip, f is the working frequency of the power supply chip, V_inThe input voltage is the input voltage of the power supply chip;

the expression of the second mathematical model is:

where ESR is the equivalent series resistance of all resistors on the power supply chip, C_outTo the equivalent capacitance value of all capacitors on the power supply chip, f_swThe switching frequency of the power supply chip.

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 disclosed by the embodiment of the invention.

Referring to fig. 8, fig. 8 is a structural diagram of a power supply control device of an SSD power supply chip according to an embodiment of the present invention, where the power supply control device includes:

a memory 31 for storing a computer program;

the processor 32 is configured to implement the steps of the power supply control method of the SSD power supply chip as disclosed in the foregoing when executing the 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 disclosed by the embodiment of the invention.

Accordingly, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the power supply control method for the SSD power supply chip disclosed in the foregoing are implemented.

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 disclosed in the foregoing.

The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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.

The above detailed description is provided for the power supply control method, device, equipment and medium of the SSD power supply chip provided by the present invention, and a specific example is applied in this document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.