Method, system and related device for adjusting output voltage of multi-phase power supply

Abstract

The invention discloses an output voltage adjusting method and system of a multi-phase power supply and a related device, and relates to the field of power supplies, and the method comprises the steps: responding to a current VID voltage request sent by a power utilization end, and calculating the current VID voltage request if the multi-phase power supply starts a Load-Line function and is influenced by a target voltage influence factor; the output voltage is in a first numerical relationship with the minimum working voltage of the power utilization end and is in a second numerical relationship with the maximum working voltage of the power utilization end; a minimum working voltage value and a maximum working voltage value corresponding to the current VID voltage request are obtained and substituted in, a first output voltage value and a second output voltage value are obtained, and a median voltage value between the output voltage values is taken; and constructing a PMBUS instruction containing the median voltage value and sending the PMBUS instruction to a controller of the multi-phase power supply. According to the invention, the output voltage under the influence of the Load-Line function and various voltage influence factors is obtained, so that the output voltage meets the requirements of the power utilization end, the margin is provided, and the stability of the power utilization end is improved.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a method, system and related apparatus for adjusting the output voltage of a multiphase power supply. Background Technology

[0002] A multiphase power supply is a power supply architecture that distributes the power load across multiple phases. Each phase contains an independent power conversion module, and the multiple phases work in parallel to provide the power output required by the user. Multiphase power supplies generally have a load-line function, a power management technology mainly used to regulate the output voltage of the multiphase power supply, allowing the output voltage to be dynamically adjusted according to changes in load current.

[0003] However, the load-line function of multiphase power supplies can introduce instability to the operating voltage at the power consumption end. In addition, other voltage-affecting factors, such as voltage undershoot / overshoot, often cause the actual voltage at the power consumption end to exceed its operating voltage range, resulting in low stability at the power consumption end. Summary of the Invention

[0004] In view of the above problems, this application provides a method, system, and related device for adjusting the output voltage of a multiphase power supply to improve the stability of the power consumption terminal. The specific solution is as follows:

[0005] The first aspect of this application provides a method for adjusting the output voltage of a multiphase power supply, the method comprising:

[0006] In response to the current voltage identification code (VID) voltage request sent by the power user, calculate the first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and the second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user, under the conditions of enabling the load-line function of the multiphase power supply and the influence of various target voltage influencing factors.

[0007] Obtain the minimum and maximum operating voltage values ​​of the power-consuming terminal corresponding to the current VID voltage request; calculate the first output voltage value based on the minimum operating voltage value and the first numerical relationship; and calculate the second output voltage value based on the maximum operating voltage value and the second numerical relationship.

[0008] Calculate the median voltage value between the first output voltage value and the second output voltage value;

[0009] A power management bus (PMBUS) instruction containing the median voltage value is constructed, and the PMBUS instruction is sent to the controller of the multiphase power supply, so that the controller controls the multiphase power supply to output a voltage with the median voltage value to the power consumption terminal.

[0010] In one possible implementation, the calculation of the first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power consumer, and the second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power consumer, under the conditions of enabling the load-line function of the multiphase power supply and the influence of various target voltage influencing factors, includes:

[0011] Calculate the numerical relationship between the output voltage of the multiphase power supply and the first output voltage, and the numerical relationship between the output voltage of the multiphase power supply and the second output voltage, when the load-line function of the multiphase power supply is enabled. The first output voltage is the output voltage of the multiphase power supply after enabling the load-line function under light load current. The second output voltage is the output voltage of the multiphase power supply after enabling the load-line function under full load current.

[0012] Calculate the numerical relationship between the first output voltage and the maximum output voltage of the multiphase power supply, and the numerical relationship between the second output voltage and the minimum output voltage of the multiphase power supply, under the influence of various target voltage influencing factors.

[0013] Based on the numerical relationship between the output voltage and the first output voltage, and the numerical relationship between the first output voltage and the maximum output voltage, the numerical relationship between the output voltage and the maximum output voltage is obtained and used as the second numerical relationship;

[0014] Based on the numerical relationship between the output voltage and the second output voltage, and the numerical relationship between the second output voltage and the minimum output voltage, the numerical relationship between the output voltage and the minimum output voltage is obtained and used as the first numerical relationship.

[0015] In one possible implementation, the calculation, if the multiphase power supply has the load-line function enabled, the numerical relationship between the output voltage of the multiphase power supply and the first output voltage, and the numerical relationship between the output voltage of the multiphase power supply and the second output voltage, includes:

[0016] Obtain the light load current value of the multiphase power supply, the full load current value of the multiphase power supply, the current threshold value for enabling the Load-Line function, and the equivalent resistance value corresponding to the Load-Line function;

[0017] Substituting the light load current value, the current threshold value, and the equivalent resistance value into the first relationship, the numerical relationship between the output voltage and the first output voltage is obtained. The first relationship is: the numerical relationship between the output voltage and the first output voltage.

[0018] Substituting the full-load current value, the current threshold value, and the equivalent resistance value into the second relationship, the numerical relationship between the output voltage and the second output voltage is obtained. The second relationship is: the numerical relationship between the output voltage and the second output voltage.

[0019] In one possible implementation, the factors affecting the target voltage include: voltage overshoot, voltage undershoot, power supply output accuracy, and power supply ripple.

[0020] The calculation of the numerical relationship between the first output voltage and the maximum output voltage of the multiphase power supply, and the numerical relationship between the second output voltage and the minimum output voltage of the multiphase power supply, under the influence of various target voltage influencing factors, includes:

[0021] Obtain the voltage overshoot, voltage undershoot, power supply output accuracy, power supply ripple, and the corresponding voltage change after enabling the Load-Line function;

[0022] Substitute the voltage overshoot value, the power supply output accuracy value, the power supply ripple value, and the voltage change value into a preset relationship between the first output voltage and the maximum output voltage to obtain the numerical relationship between the first output voltage and the maximum output voltage.

[0023] Substitute the voltage downshoot, power supply output accuracy, power supply ripple, and voltage change into a preset relationship between the second output voltage and the minimum output voltage to obtain the numerical relationship between the second output voltage and the minimum output voltage.

[0024] In one possible implementation, prior to the construction of the power management bus PMBUS instructions containing the median voltage value, the following is also included:

[0025] The data format of the median voltage value is converted into a data format that meets the requirements of a multiphase power supply format.

[0026] In one possible implementation, the parameters of the PMBUS instruction include: the median voltage value, the controller address of the multiphase power supply, and the register address of the median voltage value.

[0027] In one possible implementation, sending the PMBUS command to the controller of the multiphase power supply includes:

[0028] The PMBUS commands are sent to the controller of the multiphase power supply via a simulated internal integrated circuit bus I2C interface.

[0029] A second aspect of this application provides an output voltage adjustment system for a multiphase power supply, the output voltage adjustment system for the multiphase power supply comprising:

[0030] The relationship calculation unit is used to respond to the current voltage identification code (VID) voltage request sent by the power user and calculate, in the case of the multiphase power supply enabling the load-line function and the influence of various target voltage influencing factors, a first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and a second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user.

[0031] A voltage acquisition unit is used to acquire the minimum operating voltage value and the maximum operating voltage value of the power-consuming terminal corresponding to the current VID voltage request, calculate a first output voltage value based on the minimum operating voltage value and the first numerical relationship, and calculate a second output voltage value based on the maximum operating voltage value and the second numerical relationship.

[0032] A voltage calculation unit is used to calculate the median voltage value between the first output voltage value and the second output voltage value;

[0033] The instruction construction unit is used to construct a power management bus PMBUS instruction containing the median voltage value, and send the PMBUS instruction to the controller of the multiphase power supply, so that the controller controls the multiphase power supply to output a voltage with the median voltage value to the power consumption terminal.

[0034] A third aspect of this application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0035] The memory is used to store computer programs;

[0036] The processor is used to execute the computer program so that the electronic device can implement the multiphase power supply output voltage adjustment method of the first aspect or any implementation thereof.

[0037] The fourth aspect of this application provides a computer program product including computer-readable instructions that, when executed on an electronic device, cause the electronic device to implement the multiphase power supply output voltage adjustment method described in the first aspect or any implementation thereof.

[0038] Based on the above technical solution, this application provides a method, system, and related apparatus for adjusting the output voltage of a multiphase power supply. When the method receives a current VID voltage request from a power user, in order to maintain a certain voltage margin, it calculates a first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and a second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user, assuming the multiphase power supply has its load-line function enabled and various target voltage influencing factors are present. It also obtains the minimum and maximum operating voltage values ​​of the power user corresponding to the current VID voltage request. Based on the minimum operating voltage value and the first numerical relationship, a first output voltage value is calculated; based on the maximum operating voltage value and the second numerical relationship, a second output voltage value is calculated; the median voltage value of the first and second output voltage values ​​is taken; and a PMBUS command containing the median voltage value is constructed and sent to the controller of the multiphase power supply, so that the output voltage of the multiphase power supply is controlled to be the median voltage value. This method considers the Load-Line function and various target voltage influencing factors when adjusting the output voltage of a multiphase power supply. Under the assumption that both exist, it obtains the expected numerical relationship between the minimum / maximum operating voltage of the power user and the output voltage. This ensures that the output voltage calculated based on this numerical relationship not only meets the needs of the power user but also has a certain voltage margin. This effectively reduces the occurrence of situations where the actual voltage of the power user exceeds its operating voltage range under the influence of the Load-Line function and various voltage influencing factors, thus effectively improving the stability of the power user. Attached Figure Description

[0039] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0040] Figure 1 A flowchart illustrating a method for adjusting the output voltage of a multiphase power supply, provided in an embodiment of this application;

[0041] Figure 2 This is a schematic diagram of the output voltage adjustment system of a multiphase power supply provided in an embodiment of this application;

[0042] Figure 3 This application provides a hardware structure block diagram of an electronic device. Detailed Implementation

[0043] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is for explaining specific embodiments only and is not intended to limit the scope of this application.

[0044] The embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0045] The terms "first," "second," etc., used in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of units is not necessarily limited to those units, but may include other units not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0046] The Load-Line function is used to adjust the output voltage of a multiphase power supply. When the Load-Line function is enabled, the output voltage range of the multiphase power supply can be dynamically compensated according to the magnitude of the output current, which in turn introduces instability to the operating voltage at the power consumption end.

[0047] The power consumer can send a VID request to a multiphase power supply to determine the appropriate voltage output. However, conventional multiphase power supplies lack a VID parallel interface (an interface used for power management, primarily for voltage identification and control between the power consumer and the power supply) or do not support the VID serial protocol (a communication protocol primarily used for transmitting voltage identification information between devices). Replacing the multiphase power supply would also be detrimental to cost control. A VID (Voltage Identification) request refers to a request sent by the power consumer to the power supply using a specific protocol to negotiate or determine the appropriate voltage output.

[0048] To address the aforementioned problems, this application provides a method for adjusting the output voltage of a multiphase power supply. The method for adjusting the output voltage of a multiphase power supply according to this application will be described in detail below with reference to the accompanying drawings.

[0049] Reference Figure 1 , Figure 1 This is a flowchart illustrating a method for adjusting the output voltage of a multiphase power supply, as provided in an embodiment of this application. Figure 1 As shown in the embodiment of this application, a method for adjusting the output voltage of a multiphase power supply may include steps S10 to S13, which are described in detail below.

[0050] S10. In response to the current voltage identification code (VID) voltage request sent by the power user, calculate the first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and the second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user, under the conditions of enabling the load-line function of the multiphase power supply and the influence of various target voltage influencing factors.

[0051] Specifically, the VID voltage request sent by the power user can be a binary digital signal. Different VID voltage requests correspond to different operating voltage ranges for the power user. For example, when VID=000, the operating voltage range of the power user is 710mV~785mV; when VID=001, the operating voltage range of the power user is 740mV~816mV. The output voltage of the multiphase power supply can be the current output voltage of the multiphase power supply that needs to be calculated. The target voltage influencing factors can refer to various parameters or internal and external conditions that cause changes in voltage magnitude, stability, or distribution. In this embodiment, the target voltage influencing factors can include: voltage overshoot, voltage undershoot, power supply output accuracy, and power supply ripple. Voltage overshoot refers to a sudden increase in voltage exceeding its normal range in a circuit due to transient events or rapidly changing loads. Voltage undershoot refers to a sudden decrease in voltage exceeding its normal range in a circuit due to transient events or rapidly changing loads. Power supply output accuracy refers to the degree of closeness between the actual value of the power supply's output voltage or current and its nominal value (the output voltage or current value specified in the power supply's design and specifications). Power supply ripple refers to undesirable periodic fluctuations in the power supply's output voltage or current, usually caused by internal switching operations, insufficient filtering, or external interference.

[0052] Since the Load-Line function of a multiphase power supply and various target voltage influencing factors can affect its output voltage, this embodiment calculates the numerical relationship between the multiphase power supply's output voltage and the user's operating voltage under the assumptions of the Load-Line function being enabled and the influence of various target voltage influencing factors. Specifically, the user's operating voltage range can include both the minimum and maximum operating voltages. Therefore, the specific process for calculating the numerical relationship between the multiphase power supply's output voltage and the user's operating voltage can be as shown in steps one through four:

[0053] Step 1: Calculate the numerical relationship between the multiphase power supply's output voltage and the first output voltage, and the numerical relationship between the multiphase power supply's output voltage and the second output voltage, when the load-line function of the multiphase power supply is enabled. The first output voltage is the output voltage of the multiphase power supply after enabling the load-line function under light load current. The second output voltage is the output voltage of the multiphase power supply after enabling the load-line function under full load current. Light load current can refer to the normal or initial current value after the multiphase power supply is turned on. In this embodiment, the current when the multiphase power supply is not operating any function is taken as the light load current. Light load current can also refer to the maximum current value output by the multiphase power supply during normal operation. In this embodiment, the current when the multiphase power supply is operating all its functions is taken as the full load current. Both light load current and full load current can be obtained from the measured data of the multiphase power supply.

[0054] Specifically, the calculation process can be described as follows:

[0055] Obtain the light-load current value, the full-load current value, the current threshold value for enabling the Load-Line function, and the equivalent resistance value corresponding to the Load-Line function of the multi-phase power supply; substitute the light-load current value, the current threshold value, and the equivalent resistance value into the first relational expression to obtain the numerical relationship between the output voltage and the first output voltage. The first relational expression is: numerical relationship between the output voltage and the first output voltage; substitute the full-load current value, the current threshold value, and the equivalent resistance value into the second relational expression to obtain the numerical relationship between the output voltage and the second output voltage. The second relational expression is: numerical relationship between the output voltage and the second output voltage.

[0056] The formula for the first relation can be shown below:

[0057] ;

[0058] The formula for the second relation can be shown below:

[0059] ;

[0060] in, It can represent the first output voltage, the output voltage of the multiphase power supply after the Load-Line function is enabled under light load current; It can represent the second output voltage, which is the output voltage of the multiphase power supply after the Load-Line function is enabled under full load current. It can represent the output voltage of a multiphase power supply; It can represent the light load current value; It can represent the full-load current value; It can represent the current threshold value for enabling the Load-Line function; It can represent the equivalent resistance value corresponding to the Load-Line function.

[0061] Since the light load current is the normal or initial value after the multiphase power supply is turned on, and the current value higher than the light load current may change frequently with changes in the business scenario, the frequently changing current is more prone to dynamic response problems, thus requiring the Load-Line function for regulation. Therefore, in this embodiment, the light load current value is set as the current threshold value for enabling the Load-Line function. The equivalent resistance value corresponding to the Load-Line function can refer to the virtual resistance value calculated based on the characteristics of the load line in the multiphase power supply, which can be set in advance. Different multiphase power supplies may have different equivalent resistance values ​​corresponding to the Load-Line function.

[0062] Step 2: Calculate the numerical relationship between the first output voltage and the maximum output voltage of the multiphase power supply, and the numerical relationship between the second output voltage and the minimum output voltage of the multiphase power supply, under the influence of various target voltage influencing factors.

[0063] The minimum output voltage of a multiphase power supply can refer to the extreme minimum value that its output voltage can reach under the combined influence of multiple target voltage influencing factors, while the maximum output voltage of a multiphase power supply can refer to the extreme maximum value that its output voltage can reach under the combined influence of multiple target voltage influencing factors.

[0064] Specifically, the calculation process can be described as follows:

[0065] Obtain the voltage overshoot, voltage undershoot, power supply output accuracy, power supply ripple, and the corresponding voltage change after enabling the Load-Line function; substitute the voltage overshoot, power supply output accuracy, power supply ripple, and voltage change into the preset relationship between the first output voltage and the maximum output voltage to obtain the numerical relationship between the first output voltage and the maximum output voltage; substitute the voltage undershoot, power supply output accuracy, power supply ripple, and voltage change into the preset relationship between the second output voltage and the minimum output voltage to obtain the numerical relationship between the second output voltage and the minimum output voltage.

[0066] Among them, the voltage overshoot, voltage undershoot, power supply output accuracy, and power supply ripple can all be obtained from the actual measurement data of the multiphase power supply. The voltage change value corresponding to the Load-Line function refers to the magnitude of the voltage change caused by the Load-Line function being enabled in the multiphase power supply. The calculation formula is as follows:

[0067] ;

[0068] The formula for the preset relationship between the first output voltage and the maximum output voltage can be expressed as follows:

[0069] ;

[0070] The formula for the preset relationship between the second output voltage and the minimum output voltage can be expressed as follows:

[0071] ;

[0072] in, It can represent the voltage change value corresponding to the Load-Line function; It can represent the light load current value; It can represent the full-load current value; It can represent the equivalent resistance value corresponding to the Load-Line function; It can represent the maximum output voltage; It can represent the minimum output voltage; It can represent the first output voltage; It can represent the second output voltage; It can represent the power supply output accuracy value; It can represent the power supply ripple value; It can represent the voltage overshoot value; It can represent the voltage downshoot value.

[0073] Since the above process has calculated the numerical relationship between the output voltage and the first and second output voltages after enabling the Load-Line function, it indicates that the output voltage change has introduced the Load-Line change value (the voltage change value brought about by enabling the Load-Line function). In this embodiment, when calculating the relationship between the first output voltage and the maximum output voltage, and the relationship between the second output voltage and the minimum output voltage, the voltage change caused by voltage overshoot and voltage undershoot is considered. Since the first and second output voltages have already introduced the Load-Line change value, the voltage overshoot and voltage undershoot, in order to prevent the repeated calculation of the Load-Line change value, the voltage overshoot and voltage undershoot, this embodiment needs to compare the magnitudes of the Load-Line change value, the voltage overshoot value and the voltage undershoot value.

[0074] Specifically, if the Load-Line change values ​​are all greater than the voltage overshoot or undershoot values, it indicates that the voltage change brought about by the Load-Line function is greater than the voltage change brought about by the voltage overshoot or undershoot. Since the voltage change brought about by Load-Line has already been considered in the aforementioned process, therefore, in the calculation... At that time, there is no need to add the voltage change caused by the voltage overshoot. You can take 0 in the calculation. At this time, there is no need to add the voltage change caused by the voltage downscaling. It can also be set to 0. If the Load-Line change is less than the voltage overshoot, it means that the voltage change caused by the voltage overshoot is greater than the voltage change caused by the Load-Line function. Since the voltage change caused by Load-Line has already been considered in the preceding process, therefore, in the calculation... At this time, the additional voltage change caused by the voltage overshoot can be added to the voltage change caused by the load-line, and the difference between the load-line change value and the voltage overshoot value can be calculated. (not 0), but because in the calculation At that time, due to the calculation The additional voltage change has already been superimposed, therefore in the calculation No additional voltage change is needed. A value of 0 is acceptable. When all Load-Line changes are less than the voltage overshoot or undershoot, it indicates that the voltage change caused by either the voltage overshoot or undershoot is greater than the voltage change caused by the Load-Line function. Therefore, in the calculation... At this time, the additional voltage change caused by the voltage overshoot can be added to the voltage change caused by the load-line, and the difference between the load-line change value and the voltage overshoot value can be calculated. (Not 0), in calculation At this time, the additional voltage change caused by the voltage undershoot can be added to the voltage change caused by the load-line, and the difference between the load-line change value and the voltage undershoot value can be calculated. (Not 0).

[0075] Step 3: Based on the numerical relationship between the output voltage and the first output voltage, and the numerical relationship between the first output voltage and the maximum output voltage, obtain the numerical relationship between the output voltage and the maximum output voltage and use it as the second numerical relationship;

[0076] Step 4: Based on the numerical relationship between the output voltage and the second output voltage, and the numerical relationship between the second output voltage and the minimum output voltage, obtain the numerical relationship between the output voltage and the minimum output voltage and use it as the first numerical relationship.

[0077] In this embodiment, after obtaining the numerical relationship between the output voltage and the first output voltage, and the numerical relationship between the first output voltage and the maximum output voltage, the numerical relationship between the output voltage and the first output voltage can be substituted into the numerical relationship between the first output voltage and the maximum output voltage to obtain the numerical relationship between the output voltage and the maximum output voltage, which is then used as the second numerical relationship. After obtaining the numerical relationship between the output voltage and the second output voltage, and the numerical relationship between the second output voltage and the minimum output voltage, the numerical relationship between the output voltage and the second output voltage can be substituted into the numerical relationship between the second output voltage and the minimum output voltage to obtain the numerical relationship between the output voltage and the minimum output voltage, which is then used as the first numerical relationship.

[0078] S11. Obtain the minimum and maximum operating voltage values ​​of the power supply terminal corresponding to the current VID voltage request, calculate the first output voltage value based on the minimum operating voltage value and the first numerical relationship, and calculate the second output voltage value based on the maximum operating voltage value and the second numerical relationship.

[0079] S12. Calculate the median voltage value between the first output voltage value and the second output voltage value.

[0080] The operating voltage range of the power supply terminal can be obtained directly from the design requirements or technical manual data of the power supply terminal, or it can be obtained from the actual measured data of the power supply terminal. After obtaining the numerical relationship between the output voltage and the maximum output voltage and the output voltage and the minimum output voltage in this embodiment, the minimum operating voltage of the power supply terminal can be taken as the minimum output voltage, and the maximum output voltage of the power supply terminal can be taken as the maximum output voltage. Thus, the numerical relationship that the current output voltage of the multiphase power supply should satisfy with respect to the minimum and maximum operating voltages of the power supply terminal under the influence of the Load-Line function and various target voltage influencing factors can be obtained.

[0081] To further ensure a voltage margin for the output voltage, if the first and second output voltage values ​​are not the same, the median voltage value between the two values ​​is taken as the final output voltage. This ensures that both the minimum and maximum values ​​calculated based on this median voltage value are within the operating voltage range of the power supply terminal. Specifically, the median voltage value can be the voltage value corresponding to the median value within the range formed by the first and second output voltage values.

[0082] S13. Construct a power management bus PMBUS instruction containing the median voltage value, and send the PMBUS instruction to the controller of the multiphase power supply, so that the controller controls the multiphase power supply to output a voltage with the median voltage value to the power consumption terminal.

[0083] Once this embodiment determines the output voltage corresponding to the current VID voltage request sent by the power consumer, it can construct control commands for the multiphase power supply controller and send them to the controller. Specifically, it can utilize a CPLD commonly used on a board (a device that carries both the multiphase power supply and the power consumer) to construct control PMBUS commands, thereby converting the VID voltage request from the power consumer into general PMBUS commands to regulate the output voltage of the multiphase power supply through a simulated I2C interface (simulated via the CPLD).

[0084] The PMBUS instruction construction process can be divided into two parts. The first part is to convert the median voltage value data format into a data format that conforms to the multiphase power supply format requirements (stepping requirements). The second part is to assemble a PMBUS instruction from various parameters, including the median voltage value, the multiphase power supply controller address, and the address of the median voltage value register (a small storage unit that stores data and control information; in this embodiment, the median voltage value stored in the register is in hexadecimal format). The PMBUS instruction is then sent to the multiphase power supply controller through a simulated I2C interface. This allows the multiphase power supply controller to receive the PMBUS instruction, read the median voltage value according to the median voltage value register address parameter, and control the output voltage of the multiphase power supply.

[0085] Among them, CPLD (Complex Programmable Logic Device) is a programmable logic device with high flexibility and configurability. PMBUS (Power Management Bus) is an open standard communication protocol based on the I2C bus, designed specifically for the monitoring, configuration, and control of power devices. I2C (Inter-Integrated Circuit) is a synchronous, multi-master, multi-wire serial communication protocol.

[0086] Therefore, a specific embodiment is provided to illustrate the above process. The power consumption chip at the power consumption end is BFN-T20-128QM (a high-performance programmable network chip) as an example, and the controller of the multi-phase power supply is RAA228228 (a digital dual-output controller) as an example.

[0087] Upon receiving the current VID voltage request (VID=000) from the power user, firstly, calculate the numerical relationship between the multi-phase power supply's output voltage and the first output voltage, and the numerical relationship between the multi-phase power supply's output voltage and the second output voltage, under the load-line function enabled by the multi-phase power supply. Specifically:

[0088] Obtain light load current 100A, full load current The current threshold for enabling the Load-Line function is 300A. The current value is 100A (the current value for light load current is set to the current threshold value for enabling the Load-Line function), and the equivalent resistance value corresponding to the Load-Line function is... Given a value of 0.2 mOhm (milliohms), substitute the parameter value into the following formula to calculate the first output voltage. Second output voltage :

[0089] ;

[0090] ;

[0091] Obtain the numerical relationship between the output voltage and the first output voltage, and the numerical relationship between the output voltage and the second output voltage:

[0092] ;

[0093] ;

[0094] Secondly, the numerical relationships between the first output voltage and the maximum output voltage of the multiphase power supply, and between the second output voltage and the minimum output voltage of the multiphase power supply, are calculated under the influence of various target voltage influencing factors. Specifically:

[0095] Obtain voltage overshoot value The voltage undershoot is 54mV (millivolts). The power supply output accuracy value is 30mV. The power supply ripple value is 4mV. It is 6mv.

[0096] Light load current 100A, full load current The equivalent resistance value corresponding to 300A and Load-Line functions Substitute 0.2mOhm into the following formula to calculate the voltage change value after the Load-Line function is applied:

[0097]

[0098] Since the voltage change value (40mV) after the Load-Line function is less than the voltage overshoot value (54mV), the maximum output voltage is calculated as follows: hour, If not zero, calculate Additional voltage variations have been introduced, therefore, in calculating the minimum output voltage... At that time, there is no need to add additional voltage changes. The value can be 0. Therefore, the maximum output voltage is calculated according to the following formula. and minimum output voltage :

[0099] ;

[0100] ;

[0101] Substitute the values ​​of the above parameters into the formula:

[0102] ;

[0103] ;

[0104] Obtain the numerical relationship between the first output voltage and the maximum output voltage of the multiphase power supply, and the numerical relationship between the second output voltage and the minimum output voltage of the multiphase power supply:

[0105] ;

[0106] ;

[0107] Will ; Substituting into the above formulas, we obtain the numerical relationships between the output voltage and the maximum output voltage, and between the output voltage and the minimum output voltage:

[0108] ;

[0109] ;

[0110] Will As a second numerical relationship between the output voltage and the maximum operating voltage, This serves as the primary numerical relationship between the output voltage and the minimum operating voltage.

[0111] Get the operating voltage range of the power user corresponding to the VID voltage request (VID=000) sent by the power user: 710mV~785mV.

[0112] Using 710mV as Substitute the value of into 785mv as Substitute the value of into Obtain the first output voltage value Second output voltage value

[0113] ;

[0114] ;

[0115] Calculate the median voltage value between the first output voltage value and the second output voltage value:

[0116] Within the output voltage range of 757mV to 764mV, the median values ​​are 760 and 761, therefore the average is calculated as follows: Therefore, the median voltage value If the voltage is 761mV, then the output voltage of the multiphase power supply can be determined to be 761mV.

[0117] Finally, a power management bus (PMBUS) command containing the median voltage value is constructed and sent to the controller of the multiphase power supply, specifically as follows:

[0118] The median voltage value data format needs to be converted to a format that conforms to the requirements of a multiphase power supply. Since the controller for the multiphase power supply is RAA228228, its data format requirement is hexadecimal. Therefore, this embodiment requires converting the median voltage value... If the data format is converted to hexadecimal, then =16'h02f9. Output voltage The controller slave address (the controller slave address is 0x47; since a write operation is required, it needs to be shifted left by one bit and bit0 is set to 0, so the controller slave address is 0x8e) and the register address of the midpoint voltage value (0x21) are filled into the I2C master core with standard PMBUS functionality (a hardware or software module used to implement the I2C bus master device function), obtain PMBUS instructions, and send them to the controller of the multiphase power supply.

[0119] This application provides a method for adjusting the output voltage of a multiphase power supply. Upon receiving a current VID voltage request from a power user, the method calculates, in order to maintain a certain voltage margin, a first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and a second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user, assuming the load-line function of the multiphase power supply is enabled and various target voltage influencing factors are considered. The method also obtains the minimum and maximum operating voltage values ​​of the power user corresponding to the current VID voltage request. Based on the minimum operating voltage value and the first numerical relationship, a first output voltage value is calculated; based on the maximum operating voltage value and the second numerical relationship, a second output voltage value is calculated; the median voltage value of the first and second output voltage values ​​is taken; and a PMBUS command containing the median voltage value is constructed and sent to the controller of the multiphase power supply, facilitating the control of the multiphase power supply's output voltage to be the median voltage value. This method considers the Load-Line function and various voltage-influencing factors when adjusting the output voltage of a multiphase power supply. Under the assumption that both of these factors exist, it obtains the expected numerical relationship between the minimum / maximum operating voltage of the power user and the output voltage. This ensures that the output voltage calculated based on this numerical relationship not only meets the needs of the power user but also has a certain voltage margin. This effectively reduces the occurrence of situations where the actual voltage of the power user exceeds its operating voltage range under the influence of the Load-Line function and various voltage-influencing factors, thus effectively improving the stability of the power user.

[0120] The above describes a method for adjusting the output voltage of a multiphase power supply according to an embodiment of this application. The following describes a system that applies the above-described method for adjusting the output voltage of a multiphase power supply.

[0121] Please see Figure 2 , Figure 2 This is a schematic diagram of the output voltage adjustment system of a multiphase power supply provided in an embodiment of this application. Figure 2 As shown, the output voltage regulation system of this multiphase power supply may include:

[0122] The relationship calculation unit 100 is used to respond to the current voltage identification code VID voltage request sent by the power user to calculate the first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and the second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user, under the conditions of the load-line function of the multiphase power supply being enabled and various target voltage influencing factors.

[0123] The voltage acquisition unit 110 is used to acquire the minimum operating voltage value and the maximum operating voltage value of the power consumption terminal corresponding to the current VID voltage request, calculate the first output voltage value based on the minimum operating voltage value and the first numerical relationship, and calculate the second output voltage value based on the maximum operating voltage value and the second numerical relationship.

[0124] The voltage calculation unit 120 is used to calculate the median voltage value between the first output voltage value and the second output voltage value;

[0125] The instruction construction unit 130 is used to construct a power management bus PMBUS instruction containing the median voltage value, and send the PMBUS instruction to the controller of the multiphase power supply, so that the controller controls the multiphase power supply to output a voltage with the median voltage value to the power consumption end.

[0126] In one possible implementation, the relation computation unit 100 may include:

[0127] The first calculation subunit is used to calculate the numerical relationship between the output voltage of the multiphase power supply and the first output voltage, and the numerical relationship between the output voltage of the multiphase power supply and the second output voltage when the load-line function of the multiphase power supply is enabled. The first output voltage is the output voltage of the multiphase power supply after enabling the load-line function under light load current, and the second output voltage is the output voltage of the multiphase power supply after enabling the load-line function under full load current.

[0128] The second calculation subunit is used to calculate the numerical relationship between the first output voltage and the maximum output voltage of the multiphase power supply, and the numerical relationship between the second output voltage and the minimum output voltage of the multiphase power supply, under the influence of various target voltage influencing factors.

[0129] The first conversion subunit is used to obtain the numerical relationship between the output voltage and the maximum output voltage based on the numerical relationship between the output voltage and the first output voltage and the numerical relationship between the first output voltage and the maximum output voltage, and use it as the second numerical relationship.

[0130] The first conversion subunit is used to obtain the numerical relationship between the output voltage and the minimum output voltage based on the numerical relationship between the output voltage and the second output voltage, and the numerical relationship between the second output voltage and the minimum output voltage, and use it as the first numerical relationship.

[0131] In one possible implementation, the first computational subunit can be specifically configured as follows:

[0132] Obtain the light-load current value, the full-load current value, the current threshold value for enabling the Load-Line function, and the equivalent resistance value corresponding to the Load-Line function of the multi-phase power supply; substitute the light-load current value, the current threshold value, and the equivalent resistance value into the first relational expression to obtain the numerical relationship between the output voltage and the first output voltage. The first relational expression is: numerical relationship between the output voltage and the first output voltage; substitute the full-load current value, the current threshold value, and the equivalent resistance value into the second relational expression to obtain the numerical relationship between the output voltage and the second output voltage. The second relational expression is: numerical relationship between the output voltage and the second output voltage.

[0133] In one possible implementation, the factors affecting the target voltage include: voltage overshoot, voltage undershoot, power supply output accuracy, and power supply ripple. The second calculation subunit can be specifically configured as follows:

[0134] Obtain the voltage overshoot, voltage undershoot, power supply output accuracy, power supply ripple, and the corresponding voltage change after enabling the Load-Line function; substitute the voltage overshoot, power supply output accuracy, power supply ripple, and voltage change into the preset relationship between the first output voltage and the maximum output voltage to obtain the numerical relationship between the first output voltage and the maximum output voltage; substitute the voltage undershoot, power supply output accuracy, power supply ripple, and voltage change into the preset relationship between the second output voltage and the minimum output voltage to obtain the numerical relationship between the second output voltage and the minimum output voltage.

[0135] In one possible implementation, before the instruction building unit 130 builds the power management bus PMBUS instruction containing the median voltage value, it can also be configured as follows:

[0136] Convert the median voltage data format to a format that meets the requirements of a multiphase power supply.

[0137] In one possible implementation, the parameters of the PMBUS instruction may include: the median voltage value, the controller address of the multiphase power supply, and the register address of the median voltage value.

[0138] In one possible implementation, the instruction construction unit 130 sends PMBUS instructions to the controller of the multiphase power supply, which can be specifically configured as follows:

[0139] PMBUS commands are sent to the controller of the multiphase power supply via a simulated internal integrated circuit bus I2C interface.

[0140] This application also provides an electronic device in its embodiments. (See reference...) Figure 3The diagram illustrates a structural schematic suitable for implementing the electronic device in the embodiments of this application. The electronic device in the embodiments of this application may include, but is not limited to, fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 3 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0141] like Figure 3 As shown, the electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 301, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 302 or a program loaded from a storage device 308 into a random access memory (RAM) 303. When the electronic device is powered on, the RAM 303 also stores various programs and data required for the operation of the electronic device. The processing unit 301, ROM 302, and RAM 303 are interconnected via a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0142] Typically, the following devices can be connected to I / O interface 305: input devices 306 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 307 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 308 including, for example, memory cards, hard drives, etc.; and communication devices 309. Communication device 309 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 3 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have instead.

[0143] This application also provides a computer program product including computer-readable instructions, which, when executed on an electronic device, cause the electronic device to implement any of the multiphase power supply output voltage adjustment methods provided in this application.

[0144] This application also provides a computer-readable storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any of the multiphase power supply output voltage adjustment methods provided in this application.

[0145] It should also be noted that the system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the system embodiment drawings provided in this application, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines.

[0146] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware, or it can be implemented by special-purpose hardware including application-specific integrated circuits, special-purpose CPUs, special-purpose memory, special-purpose components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for this application, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, training equipment, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0147] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product.

[0148] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

[0149] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0150] It is understood that before using the technical solutions disclosed in the various embodiments of this disclosure, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in this disclosure in an appropriate manner in accordance with relevant laws and regulations, and user authorization should be obtained.

[0151] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for adjusting the output voltage of a multiphase power supply, characterized in that, The output voltage adjustment method of the multiphase power supply includes: In response to the current voltage identification code (VID) voltage request sent by the power user, calculate the first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and the second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user, under the conditions of enabling the load-line function of the multiphase power supply and the influence of various target voltage influencing factors. Obtain the minimum and maximum operating voltage values ​​of the power-consuming terminal corresponding to the current VID voltage request; calculate the first output voltage value based on the minimum operating voltage value and the first numerical relationship; and calculate the second output voltage value based on the maximum operating voltage value and the second numerical relationship. Calculate the median voltage value between the first output voltage value and the second output voltage value; A power management bus (PMBUS) instruction containing the median voltage value is constructed, and the PMBUS instruction is sent to the controller of the multiphase power supply, so that the controller controls the multiphase power supply to output a voltage with the median voltage value to the power consumption terminal.

2. The method for adjusting the output voltage of a multiphase power supply according to claim 1, characterized in that, The calculation, under the conditions of enabling the load-line function of the multi-phase power supply and the influence of various target voltage factors, includes the following: a first numerical relationship between the output voltage of the multi-phase power supply and the minimum operating voltage of the power consumption terminal, and a second numerical relationship between the output voltage of the multi-phase power supply and the maximum operating voltage of the power consumption terminal. Calculate the numerical relationship between the output voltage of the multiphase power supply and the first output voltage, and the numerical relationship between the output voltage of the multiphase power supply and the second output voltage, when the load-line function of the multiphase power supply is enabled. The first output voltage is the output voltage of the multiphase power supply after enabling the load-line function under light load current. The second output voltage is the output voltage of the multiphase power supply after enabling the load-line function under full load current. Calculate the numerical relationship between the first output voltage and the maximum output voltage of the multiphase power supply, and the numerical relationship between the second output voltage and the minimum output voltage of the multiphase power supply, under the influence of various target voltage influencing factors. Based on the numerical relationship between the output voltage and the first output voltage, and the numerical relationship between the first output voltage and the maximum output voltage, the numerical relationship between the output voltage and the maximum output voltage is obtained and used as the second numerical relationship; Based on the numerical relationship between the output voltage and the second output voltage, and the numerical relationship between the second output voltage and the minimum output voltage, the numerical relationship between the output voltage and the minimum output voltage is obtained and used as the first numerical relationship.

3. The method for adjusting the output voltage of a multiphase power supply according to claim 2, characterized in that, The calculations, under the condition that the multiphase power supply has its load-line function enabled, include the numerical relationships between the output voltage of the multiphase power supply and the first output voltage, and between the output voltage of the multiphase power supply and the second output voltage, including: Obtain the light load current value of the multiphase power supply, the full load current value of the multiphase power supply, the current threshold value for enabling the Load-Line function, and the equivalent resistance value corresponding to the Load-Line function; Substituting the light load current value, the current threshold value, and the equivalent resistance value into the first relationship, the numerical relationship between the output voltage and the first output voltage is obtained. The first relationship is: the numerical relationship between the output voltage and the first output voltage. Substituting the full-load current value, the current threshold value, and the equivalent resistance value into the second relationship, the numerical relationship between the output voltage and the second output voltage is obtained. The second relationship is: the numerical relationship between the output voltage and the second output voltage.

4. The method for adjusting the output voltage of a multiphase power supply according to claim 2 or 3, characterized in that, The factors affecting the target voltage include: voltage overshoot, voltage undershoot, power supply output accuracy, and power supply ripple. The calculation of the numerical relationship between the first output voltage and the maximum output voltage of the multiphase power supply, and the numerical relationship between the second output voltage and the minimum output voltage of the multiphase power supply, under the influence of various target voltage influencing factors, includes: Obtain the voltage overshoot, voltage undershoot, power supply output accuracy, power supply ripple, and the corresponding voltage change after enabling the Load-Line function; Substitute the voltage overshoot value, the power supply output accuracy value, the power supply ripple value, and the voltage change value into a preset relationship between the first output voltage and the maximum output voltage to obtain the numerical relationship between the first output voltage and the maximum output voltage. Substitute the voltage downshoot, power supply output accuracy, power supply ripple, and voltage change into a preset relationship between the second output voltage and the minimum output voltage to obtain the numerical relationship between the second output voltage and the minimum output voltage.

5. The method for adjusting the output voltage of a multiphase power supply according to claim 1, characterized in that, Prior to the construction of the power management bus PMBUS instruction containing the median voltage value, the following is also included: The data format of the median voltage value is converted into a data format that meets the requirements of a multiphase power supply format.

6. The method for adjusting the output voltage of a multiphase power supply according to claim 1, characterized in that, The parameters of the PMBUS instruction include: the median voltage value, the controller address of the multiphase power supply, and the register address of the median voltage value.

7. The method for adjusting the output voltage of a multiphase power supply according to claim 1, characterized in that, Sending the PMBUS command to the controller of the multiphase power supply includes: The PMBUS commands are sent to the controller of the multiphase power supply via a simulated internal integrated circuit bus I2C interface.

8. An output voltage regulation system for a multiphase power supply, characterized in that, The output voltage adjustment system of the multiphase power supply includes: The relationship calculation unit is used to respond to the current voltage identification code (VID) voltage request sent by the power user and calculate, in the case of the multiphase power supply enabling the load-line function and the influence of various target voltage influencing factors, a first numerical relationship between the output voltage of the multiphase power supply and the minimum operating voltage of the power user, and a second numerical relationship between the output voltage of the multiphase power supply and the maximum operating voltage of the power user. A voltage acquisition unit is used to acquire the minimum operating voltage value and the maximum operating voltage value of the power-consuming terminal corresponding to the current VID voltage request, calculate a first output voltage value based on the minimum operating voltage value and the first numerical relationship, and calculate a second output voltage value based on the maximum operating voltage value and the second numerical relationship. A voltage calculation unit is used to calculate the median voltage value between the first output voltage value and the second output voltage value; The instruction construction unit is used to construct a power management bus PMBUS instruction containing the median voltage value, and send the PMBUS instruction to the controller of the multiphase power supply, so that the controller controls the multiphase power supply to output a voltage with the median voltage value to the power consumption terminal.

9. An electronic device, characterized in that, It includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program to enable the electronic device to implement the output voltage adjustment method of the multiphase power supply as described in any one of claims 1 to 7.

10. A computer program product, characterized in that, Includes computer-readable instructions that, when executed on an electronic device, cause the electronic device to implement the output voltage adjustment method for a multiphase power supply as described in any one of claims 1 to 7.

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