CN108333531B - Multiphase switching power supply efficiency debugging device, method and system - Google Patents
Multiphase switching power supply efficiency debugging device, method and system Download PDFInfo
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- CN108333531B CN108333531B CN201810076227.2A CN201810076227A CN108333531B CN 108333531 B CN108333531 B CN 108333531B CN 201810076227 A CN201810076227 A CN 201810076227A CN 108333531 B CN108333531 B CN 108333531B
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Abstract
The invention relates to the technical field of power supply testing, and provides a device, a method and a system for debugging the efficiency of a multiphase switching power supply, wherein the device comprises a control terminal and parameter acquisition equipment; the parameter acquisition equipment acquires the working parameters of the multi-phase switching power supply; the control terminal continuously sends a working phase adjusting instruction to the multi-phase switching power supply, sequentially controls the multi-phase switching power supply to be in different working phase states, simultaneously sends a parameter collecting instruction to the parameter collecting equipment, draws a plurality of efficiency curve graphs according to a plurality of received working parameters, determines the cross point of the efficiency curve corresponding to the adjacent working phase as the critical point of the plus-minus phase of the adjacent working phase, and stores the determined plurality of critical points and the information of the adjacent working phase corresponding to each critical point into a register of the multi-phase switching power supply, so that the adjustment and the configuration of the multi-phase switching power supply are realized, the time consumption of a debugging process is short, and the testing efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of power supply testing, and particularly relates to a device, a method and a system for debugging the efficiency of a multiphase switching power supply.
Background
With the trend of ultra-large scale development of integrated circuits, the power density of chips is higher and higher, and the increase of power consumption requires that a board-level power supply can provide larger current output. For a direct-current step-down switching power supply larger than 25A, the performance of the single-phase switching power supply is limited by the efficiency reduction, the difficult heat dissipation and the like of the single-phase switching power supply. The multiphase power supply can reduce the current of the MOSFET and the inductor by times, can reduce hot spots on a printed circuit board or a device, and has the characteristics of low ripple voltage and small required inductor volume.
In order to operate the multiphase power supply at a higher efficiency, fewer phases need to be turned on at low current, and more phases need to be operated at higher current. The efficiency maximum of a general multiphase switching power supply is about 50-60% of load current. Therefore, it is very important to find the critical point of increasing or decreasing phases of the multi-phase switching power supply to improve the efficiency of the multi-phase switching power supply.
At present, the search of the critical point of the add-subtract phase is generally realized by adopting a manual test mode, but the traditional manual test method is complicated in operation, and the efficiency test has the defects of more parameter records, long time consumption, longer test time, increased device temperature, influence on test conditions, unsmooth finally obtained efficiency curve and larger manual error of the manual test.
Disclosure of Invention
The invention aims to provide an efficiency debugging device of a multi-phase switching power supply, and aims to solve the problems that in the prior art, a manual searching and testing method for a plus-minus phase critical point is complex in operation, low in accuracy of a test result and prone to human errors.
The efficiency debugging device comprises a control terminal and parameter acquisition equipment, wherein the control terminal and the parameter acquisition equipment are respectively connected with the multiphase switching power supply, and the control terminal is connected with the parameter acquisition equipment;
the parameter acquisition equipment is used for respectively acquiring the working parameters of the multi-phase switching power supply in different working phases and sending the acquired working parameters to the control terminal;
the control terminal is used for continuously sending a working phase adjusting instruction to the multiphase switching power supply, sequentially controlling the multiphase switching power supply to be in different working phase states by modifying a configuration file in the multiphase switching power supply, simultaneously sending a parameter acquisition instruction to the parameter acquisition equipment, receiving multiple groups of working parameters acquired by the parameter acquisition equipment, drawing a plurality of efficiency curve graphs according to the received multiple groups of working parameters, determining a cross point of efficiency curves corresponding to adjacent working phases as a critical point of phase addition and phase subtraction of the adjacent working phases, and storing the determined plurality of critical points and information of the adjacent working phases corresponding to each critical point into a register of the multiphase switching power supply.
As an improved scheme, the parameter collecting device comprises a direct current power supply, a first digital multimeter, a second digital multimeter and an electronic load meter which are all connected with the multiphase switching power supply, wherein:
the direct-current power supply is used for providing a power supply for the first digital multimeter, the second digital multimeter and the electronic load instrument, recording the input current of the multiphase switching power supply, and transmitting the recorded input current to the control terminal;
the first digital multimeter is connected with the direct-current power supply and used for measuring the input voltage of the multi-phase switching power supply and transmitting the measured input voltage to the control terminal;
the second digital multimeter is connected with the first digital multimeter and used for measuring the output voltage of the multi-phase switching power supply and transmitting the measured output voltage to the control terminal;
and the electronic load instrument is connected with the first digital multimeter and is used for measuring the output current of the multi-phase switching power supply and transmitting the measured output current to the control terminal.
As an improved scheme, the direct current power supply and the second digital multimeter, the second digital multimeter and the first digital multimeter and the electronic load instrument are connected by GPIB extension lines;
the direct current power supply is connected with the control terminal through GPIB-USB-HS.
As an improved scheme, the control terminal is connected with the multiphase switching power supply through a PMBUS.
Another objective of the present invention is to provide a method for debugging efficiency of a power supply based on a multi-phase switch, the method comprising the following steps:
continuously sending a working phase adjustment instruction to a multi-phase switching power supply, and sequentially controlling the multi-phase switching power supply to be in different working phase states by modifying a configuration file in the multi-phase switching power supply;
sending a parameter acquisition instruction to parameter acquisition equipment, and controlling the parameter acquisition equipment to acquire working parameters of the multi-phase switching power supply;
receiving a plurality of groups of working parameters acquired by the parameter acquisition equipment, and drawing a plurality of efficiency curve graphs according to the received working parameters;
determining the intersection point of the efficiency curves corresponding to the adjacent working phases as the critical point of the plus-minus phase of the adjacent working phases;
and storing the information of the plurality of determined critical points and the adjacent working phases corresponding to each critical point into a register of the multi-phase switching power supply.
As an improved scheme, the step of continuously sending an operating phase adjustment instruction to the multi-phase switching power supply and sequentially controlling the states of the multi-phase switching power supply in different operating phases specifically includes the following steps:
sending a phase working instruction to the multi-phase switching power supply, and controlling the multi-phase switching power supply to be in a phase working state by modifying an internal configuration file of the multi-phase switching power supply;
when the drawing of the efficiency curve chart in the one-phase working state is finished, sending a one-phase adding working instruction to the multi-phase switching power supply, and controlling the multi-phase switching power supply to be in the multi-phase working state by modifying an internal configuration file of the multi-phase switching power supply;
and when the drawing of the efficiency curve graph under the multi-phase working state is finished, sending a full-phase working instruction to the multi-phase switching power supply, and controlling the multi-phase switching power supply to be in the full-phase working state by modifying an internal configuration file of the multi-phase switching power supply.
As an improved scheme, the parameter collecting device includes a dc power supply, a first digital multimeter, a second digital multimeter, and an electronic load meter, all connected to the multiphase switching power supply, wherein:
the direct-current power supply is used for providing a power supply for the first digital multimeter, the second digital multimeter and the electronic load instrument, recording the input current of the multiphase switching power supply, and transmitting the recorded input current to the control terminal;
the first digital multimeter is connected with the direct-current power supply and used for measuring the input voltage of the multi-phase switching power supply and transmitting the measured input voltage to the control terminal;
the second digital multimeter is connected with the first digital multimeter and used for measuring the output voltage of the multi-phase switching power supply and transmitting the measured output voltage to the control terminal;
and the electronic load instrument is connected with the first digital multimeter and is used for measuring the output current of the multi-phase switching power supply and transmitting the measured output current to the control terminal.
As an improved scheme, the direct current power supply and the second digital multimeter, the second digital multimeter and the first digital multimeter and the electronic load instrument are connected by GPIB extension lines;
the direct current power supply is connected with the control terminal by adopting GPIB-USB-HS;
and the control terminal is connected with the multiphase switch power supply through the PMBUS.
Another object of the present invention is to provide a system for debugging efficiency of a multiphase switching power supply, the system comprising:
the working phase adjustment instruction sending module is used for continuously sending a working phase adjustment instruction to the multi-phase switching power supply and sequentially controlling the multi-phase switching power supply to be in different working phase states by modifying a configuration file in the multi-phase switching power supply;
the parameter acquisition instruction sending module is used for sending a parameter acquisition instruction to parameter acquisition equipment and controlling the parameter acquisition equipment to acquire working parameters of the multiphase switching power supply;
the working parameter receiving module is used for receiving a plurality of groups of working parameters acquired by the parameter acquisition equipment;
the curve drawing module is used for drawing a plurality of efficiency curves according to the received multiple groups of working parameters;
the critical point determining module is used for determining the intersection points of the efficiency curves corresponding to the adjacent working phases as the critical points of the plus and minus phases of the adjacent working phases;
and the information storage module is used for storing the information of the plurality of critical points and the adjacent working phases corresponding to each critical point into a register of the multi-phase switching power supply.
As an improved scheme, the working phase adjustment instruction sending module specifically includes:
the phase working instruction sending module is used for sending a phase working instruction to the multiphase switching power supply and controlling the multiphase switching power supply to be in a phase working state by modifying an internal configuration file of the multiphase switching power supply;
the phase adding working instruction sending module is used for sending a phase adding working instruction to the multiphase switching power supply when the drawing of the efficiency curve chart in a phase working state is finished, and controlling the multiphase switching power supply to be in a multiphase working state by modifying an internal configuration file of the multiphase switching power supply;
and the full-phase working instruction sending module is used for sending a full-phase working instruction to the multiphase switching power supply when the efficiency curve graph in the multiphase working state is drawn, and controlling the multiphase switching power supply to be in the full-phase working state by modifying an internal configuration file of the multiphase switching power supply.
In the embodiment of the invention, the efficiency debugging device of the multi-phase switching power supply comprises a control terminal and parameter acquisition equipment; the parameter acquisition equipment respectively acquires the working parameters of the multiphase switching power supply in different working phases; the control terminal continuously sends a working phase adjusting instruction to the multi-phase switching power supply, sequentially controls the multi-phase switching power supply to be in different working phase states by modifying a configuration file in the multi-phase switching power supply, simultaneously sends a parameter acquisition instruction to the parameter acquisition equipment, draws a plurality of efficiency curve graphs according to a plurality of received working parameters, determines a cross point of efficiency curves corresponding to adjacent working phases as a critical point of plus and minus phases of the adjacent working phases, and stores the determined plurality of critical points and information of the adjacent working phases corresponding to each critical point into a register of the multi-phase switching power supply, so that the adjustment and configuration of the multi-phase switching power supply are realized, the time consumption of a debugging process is short, and the testing efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an efficiency debugging apparatus of a multi-phase switching power supply provided by the present invention;
FIG. 2 is a flowchart of an implementation of a method for debugging the efficiency of a multi-phase switching power supply according to the present invention;
fig. 3 is a flowchart illustrating an implementation of continuously sending a working phase adjustment command to a multi-phase switching power supply to sequentially control states of the multi-phase switching power supply in different working phases according to the present invention;
FIG. 4 is a block diagram of a multiphase switch power supply efficiency debugging system provided by the present invention;
fig. 5 is a block diagram of a working phase adjustment instruction sending module according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a schematic structural diagram of an efficiency debugging apparatus of a multiphase switching power supply provided by the present invention, and for convenience of description, only the relevant parts to the embodiment of the present invention are shown in the diagram.
The efficiency debugging device of the multiphase switching power supply comprises a control terminal 1 and parameter acquisition equipment, wherein the control terminal 1 and the parameter acquisition equipment are respectively connected with the multiphase switching power supply, and the control terminal 1 is connected with the parameter acquisition equipment;
the parameter acquisition equipment is used for respectively acquiring the working parameters of the multi-phase switching power supply in different working phases and sending the acquired working parameters to the control terminal 1;
the control terminal 1 is configured to continuously send a working phase adjustment instruction to the multiphase switching power supply, sequentially control the multiphase switching power supply to be in different working phase states by modifying a configuration file inside the multiphase switching power supply, simultaneously send a parameter acquisition instruction to the parameter acquisition device, receive multiple sets of working parameters acquired by the parameter acquisition device, draw a plurality of efficiency curve graphs according to the received multiple sets of working parameters, determine a cross point of efficiency curves corresponding to adjacent working phases as a critical point of phase addition and phase subtraction of the adjacent working phases, and store the determined plurality of critical points and information of the adjacent working phases corresponding to each critical point into a register of the multiphase switching power supply.
The working parameters include input voltage, input current, output voltage, output current, and other parameters of the multi-phase switching power supply, which are not described herein again.
As shown in fig. 1, the parameter collecting device includes a dc power supply 2, a first digital multimeter 3, a second digital multimeter 4 and an electronic load meter 5, all connected to the multiphase switching power supply, wherein:
the direct-current power supply 2 is used for providing power supplies for the first digital multimeter 3, the second digital multimeter 4 and the electronic load instrument 5, recording input current of the multiphase switching power supply, and transmitting the recorded input current to the control terminal 1;
the first digital multimeter 3 is connected with the direct-current power supply 2 and used for measuring the input voltage of the multi-phase switching power supply and transmitting the measured input voltage to the control terminal 1;
the second digital multimeter 4 is connected with the first digital multimeter 3 and is used for measuring the output voltage of the multi-phase switching power supply and transmitting the measured output voltage to the control terminal 1;
and the electronic load instrument 5 is connected with the first digital multimeter 3 and is used for measuring the output current of the multi-phase switching power supply and transmitting the measured output current to the control terminal 1.
In this embodiment, GPIB extension lines are used for connecting the dc power supply 2 and the second digital multimeter 4, the second digital multimeter 4 and the first digital multimeter 3, and the first digital multimeter 3 and the electronic load meter 5;
the direct current power supply is connected with the control terminal 1 through GPIB-USB-HS, wherein the control terminal 1 is a PC host.
In this embodiment, the control terminal 1 is connected to the multi-phase switching power supply through a PMBUS, and is configured to send the determined multiple critical points and information of the adjacent working phases corresponding to each critical point to the multi-phase switching power supply through the control terminal 1.
In the embodiment of the present invention, the control terminal 1 and the parameter acquisition devices form an automatic testing apparatus, a program for controlling the whole testing process to be automatically completed runs on the control terminal 1, the program is a Labview program, and each parameter acquisition device is configured with a GPIB address under the framework of the Labview program, so as to implement interaction with the control terminal 1, which is not described herein again.
According to the efficiency debugging device of the multi-phase switching power supply based on LabVIEW, provided by the invention, the internal configuration file of the switching power supply is automatically changed through the PMBUS, the number of phases of the multi-phase switching power supply which are increased (reduced) in work is controlled, the optimal phase increasing and decreasing critical value is found, the efficiency maximization of the multi-phase switching power supply is realized, the whole testing and debugging process is completely and automatically completed under the control of the LabVIEW, and the consumed time is short. The testing efficiency of the switching power supply is guaranteed, the time for input of research and development personnel is not increased, and the research and development efficiency is greatly improved.
Fig. 2 shows a flowchart of an implementation of the method for debugging the efficiency of the multi-phase switching power supply provided by the present invention, which specifically includes the following steps:
in step S101, an operating phase adjustment instruction is continuously sent to the multi-phase switching power supply, and the multi-phase switching power supply is sequentially controlled to be in different operating phase states by modifying a configuration file inside the multi-phase switching power supply.
In step S102, a parameter acquisition instruction is sent to a parameter acquisition device, and the parameter acquisition device is controlled to acquire the operating parameters of the multiphase switching power supply.
In step S103, a plurality of sets of working parameters collected by the parameter collecting device are received, and a plurality of efficiency curve graphs are drawn according to the received plurality of sets of working parameters.
In step S104, the intersection of the efficiency curves corresponding to the adjacent working phases is determined as the critical point of the added and subtracted phases of the adjacent working phases.
In step S105, the determined critical points and the information of the adjacent working phases corresponding to each critical point are stored in a register of the multi-phase switching power supply.
As shown in fig. 3, the step of continuously sending the operating phase adjustment instruction to the multi-phase switching power supply and sequentially controlling the states of the multi-phase switching power supply in different operating phases specifically includes the following steps:
in step S201, a phase operation instruction is sent to the multi-phase switching power supply, and the multi-phase switching power supply is controlled to be in a phase operation state by modifying an internal configuration file of the multi-phase switching power supply.
In step S202, when the drawing of the efficiency graph in the one-phase operating state is completed, an one-phase adding operating instruction is sent to the multi-phase switching power supply, and the multi-phase switching power supply is controlled to be in the multi-phase operating state by modifying the internal configuration file of the multi-phase switching power supply.
In step S203, when the efficiency graph in the multi-phase operating state is completely drawn, a full-phase operating instruction is sent to the multi-phase switching power supply, and the multi-phase switching power supply is controlled to be in the full-phase operating state by modifying an internal configuration file of the multi-phase switching power supply.
In this embodiment, the content of the structure of the parameter acquisition device and the like is recorded in the embodiment shown in fig. 1, and is not described herein again.
Fig. 4 shows a block diagram of a multiphase switching power supply efficiency debugging system provided by the present invention, and for convenience of explanation, only the relevant parts related to the embodiment of the present invention are shown in the diagram.
The working phase adjustment instruction sending module 6 is used for continuously sending a working phase adjustment instruction to the multiphase switching power supply and sequentially controlling the multiphase switching power supply to be in different working phase states by modifying a configuration file in the multiphase switching power supply;
the parameter acquisition instruction sending module 7 is used for sending a parameter acquisition instruction to parameter acquisition equipment and controlling the parameter acquisition equipment to acquire working parameters of the multiphase switching power supply;
the working parameter receiving module 8 is used for receiving a plurality of groups of working parameters acquired by the parameter acquisition equipment;
the curve drawing module 9 is used for drawing a plurality of efficiency curves according to the received plurality of groups of working parameters;
a critical point determining module 10, configured to determine an intersection point of efficiency curves corresponding to adjacent working phases as a critical point of an added-subtracted phase of the adjacent working phases;
and the information storage module 11 is configured to store the determined several critical points and information of the adjacent working phases corresponding to each critical point into a register of the multi-phase switching power supply.
As shown in fig. 5, the working phase adjustment instruction sending module 6 specifically includes:
a phase working instruction sending module 12, configured to send a phase working instruction to the multi-phase switching power supply, and control the multi-phase switching power supply to be in a phase working state by modifying an internal configuration file of the multi-phase switching power supply;
a phase adding work instruction sending module 13, configured to send a phase adding work instruction to the multiphase switching power supply when an efficiency curve graph in a phase work state is completely drawn, and control the multiphase switching power supply to be in a multiphase work state by modifying an internal configuration file of the multiphase switching power supply;
and the full-phase working instruction sending module 14 is configured to send a full-phase working instruction to the multiphase switching power supply when the efficiency curve diagram in the multiphase working state is completely drawn, and control the multiphase switching power supply to be in the full-phase working state by modifying an internal configuration file of the multiphase switching power supply.
The functions of the modules are described in the above embodiments, and are not described herein again.
In the embodiment of the invention, the efficiency debugging device of the multi-phase switching power supply comprises a control terminal 1 and parameter acquisition equipment; the parameter acquisition equipment respectively acquires the working parameters of the multiphase switching power supply in different working phases; the control terminal 1 continuously sends a working phase adjustment instruction to the multiphase switching power supply, sequentially controls the multiphase switching power supply to be in different working phase states by modifying a configuration file in the multiphase switching power supply, simultaneously sends a parameter acquisition instruction to the parameter acquisition equipment, draws a plurality of efficiency curve graphs according to a plurality of received working parameters, determines a cross point of an efficiency curve corresponding to adjacent working phases as a critical point of plus and minus phases of the adjacent working phases, and stores a plurality of determined critical points and information of the adjacent working phases corresponding to each critical point into a register of the multiphase switching power supply, so that adjustment and configuration of the multiphase switching power supply are realized, the time consumption of a debugging process is short, and the testing efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The multiphase switching power supply efficiency debugging device is characterized by comprising a control terminal and parameter acquisition equipment, wherein the control terminal and the parameter acquisition equipment are respectively connected with a multiphase switching power supply, and the control terminal is connected with the parameter acquisition equipment;
the parameter acquisition equipment is used for respectively acquiring the working parameters of the multi-phase switching power supply in different working phases and sending the acquired working parameters to the control terminal;
the control terminal is used for continuously sending a working phase adjustment instruction to the multiphase switching power supply, sequentially controlling the multiphase switching power supply to be in different working phase states by modifying a configuration file in the multiphase switching power supply, simultaneously sending a parameter acquisition instruction to the parameter acquisition equipment, receiving multiple groups of working parameters acquired by the parameter acquisition equipment, drawing a plurality of efficiency curve graphs according to the received multiple groups of working parameters, determining a cross point of efficiency curves corresponding to adjacent working phases as a critical point of phase addition and phase subtraction of the adjacent working phases, and storing the determined plurality of critical points and information of the adjacent working phases corresponding to each critical point into a register of the multiphase switching power supply;
the system comprises a control terminal, a parameter acquisition device and a GPIB (general purpose interface bus) address, wherein the control terminal and the parameter acquisition device form an automatic testing device, a program for controlling the whole testing process to be automatically completed runs on the control terminal, the program is a Labview program, and each parameter acquisition device is provided with a GPIB address under the Labview program framework to realize interaction with the control terminal;
the working parameters comprise input voltage, input current, output voltage and output current parameters of the multi-phase switching power supply.
2. The multiphase switching power supply efficiency debugging device of claim 1, wherein the parameter acquisition equipment comprises a direct current power supply, a first digital multimeter, a second digital multimeter and an electronic load meter which are all connected with the multiphase switching power supply, wherein:
the direct-current power supply is used for providing a power supply for the first digital multimeter, the second digital multimeter and the electronic load instrument, recording the input current of the multiphase switching power supply, and transmitting the recorded input current to the control terminal;
the first digital multimeter is connected with the direct-current power supply and used for measuring the input voltage of the multi-phase switching power supply and transmitting the measured input voltage to the control terminal;
the second digital multimeter is connected with the first digital multimeter and used for measuring the output voltage of the multi-phase switching power supply and transmitting the measured output voltage to the control terminal;
and the electronic load instrument is connected with the first digital multimeter and is used for measuring the output current of the multi-phase switching power supply and transmitting the measured output current to the control terminal.
3. The multiphase switching power supply efficiency debugging device according to claim 2, wherein GPIB extension lines are adopted for connection between the direct current power supply and the second digital multimeter, between the second digital multimeter and the first digital multimeter and between the first digital multimeter and the electronic load meter;
and the direct current power supply is connected with the control terminal by adopting GP IB-USB-HS.
4. The multiphase switching power supply efficiency debugging device of claim 3, wherein said control terminal is connected with multiphase switching power supply through PMBUS.
5. A multiphase switching power supply efficiency debugging method based on the multiphase switching power supply efficiency debugging device of claim 1, characterized by comprising the following steps:
the control terminal continuously sends a working phase adjustment instruction to the multi-phase switching power supply, and the multi-phase switching power supply is sequentially controlled to be in different working phase states by modifying a configuration file in the multi-phase switching power supply;
sending a parameter acquisition instruction to parameter acquisition equipment, and controlling the parameter acquisition equipment to acquire working parameters of the multi-phase switching power supply;
receiving a plurality of groups of working parameters acquired by the parameter acquisition equipment, and drawing a plurality of efficiency curve graphs according to the received working parameters;
determining the intersection point of the efficiency curves corresponding to the adjacent working phases as the critical point of the plus-minus phase of the adjacent working phases;
storing the information of the plurality of critical points and the adjacent working phases corresponding to each critical point into a register of the multi-phase switching power supply;
the system comprises a control terminal, a parameter acquisition device and a GPIB (general purpose interface bus) address, wherein the control terminal and the parameter acquisition device form an automatic testing device, a program for controlling the whole testing process to be automatically completed runs on the control terminal, the program is a Labview program, and each parameter acquisition device is provided with a GPIB address under the Labview program framework to realize interaction with the control terminal;
the working parameters comprise input voltage, input current, output voltage and output current parameters of the multi-phase switching power supply.
6. The multiphase switching power supply efficiency debugging method according to claim 5, wherein the step of continuously sending the operating phase adjustment command to the multiphase switching power supply and sequentially controlling the multiphase switching power supply to be in different operating phase states specifically comprises the following steps:
sending a phase working instruction to the multi-phase switching power supply, and controlling the multi-phase switching power supply to be in a phase working state by modifying an internal configuration file of the multi-phase switching power supply;
when the drawing of the efficiency curve chart in the one-phase working state is finished, sending a one-phase adding working instruction to the multi-phase switching power supply, and controlling the multi-phase switching power supply to be in the multi-phase working state by modifying an internal configuration file of the multi-phase switching power supply;
and when the drawing of the efficiency curve graph under the multi-phase working state is finished, sending a full-phase working instruction to the multi-phase switching power supply, and controlling the multi-phase switching power supply to be in the full-phase working state by modifying an internal configuration file of the multi-phase switching power supply.
7. The multiphase switching power supply efficiency debugging method of claim 5, wherein the parameter acquisition equipment comprises a direct current power supply, a first digital multimeter, a second digital multimeter and an electronic load meter, all connected with the multiphase switching power supply, wherein:
the direct-current power supply is used for providing a power supply for the first digital multimeter, the second digital multimeter and the electronic load instrument, recording the input current of the multiphase switching power supply, and transmitting the recorded input current to the control terminal;
the first digital multimeter is connected with the direct-current power supply and used for measuring the input voltage of the multi-phase switching power supply and transmitting the measured input voltage to the control terminal;
the second digital multimeter is connected with the first digital multimeter and used for measuring the output voltage of the multi-phase switching power supply and transmitting the measured output voltage to the control terminal;
and the electronic load instrument is connected with the first digital multimeter and is used for measuring the output current of the multi-phase switching power supply and transmitting the measured output current to the control terminal.
8. The multiphase switching power supply efficiency debugging method of claim 7, wherein GP IB extension lines are adopted for connection between the direct current power supply and the second digital multimeter, between the second digital multimeter and the first digital multimeter and between the first digital multimeter and the electronic load meter;
the direct current power supply is connected with the control terminal by adopting GP IB-USB-HS;
and the control terminal is connected with the multiphase switch power supply through the PMBUS.
9. The utility model provides a multiphase switch power supply efficiency debugging system which characterized in that, place the control terminal in the system, include:
the working phase adjustment instruction sending module is used for continuously sending a working phase adjustment instruction to the multi-phase switching power supply and sequentially controlling the multi-phase switching power supply to be in different working phase states by modifying a configuration file in the multi-phase switching power supply;
the parameter acquisition instruction sending module is used for sending a parameter acquisition instruction to parameter acquisition equipment and controlling the parameter acquisition equipment to acquire working parameters of the multiphase switching power supply;
the working parameter receiving module is used for receiving a plurality of groups of working parameters acquired by the parameter acquisition equipment;
the curve drawing module is used for drawing a plurality of efficiency curves according to the received multiple groups of working parameters;
the critical point determining module is used for determining the intersection points of the efficiency curves corresponding to the adjacent working phases as the critical points of the plus and minus phases of the adjacent working phases;
the information storage module is used for storing the information of the plurality of critical points and the adjacent working phases corresponding to each critical point into a register of the multi-phase switching power supply;
the system comprises a control terminal, a parameter acquisition device and a GPIB (general purpose interface bus) address, wherein the control terminal and the parameter acquisition device form an automatic testing device, a program for controlling the whole testing process to be automatically completed runs on the control terminal, the program is a Labview program, and each parameter acquisition device is provided with a GPIB address under the Labview program framework to realize interaction with the control terminal;
the working parameters comprise input voltage, input current, output voltage and output current parameters of the multi-phase switching power supply.
10. The multiphase switching power supply efficiency debugging system of claim 9, wherein the operating phase adjustment command sending module specifically comprises:
the phase working instruction sending module is used for sending a phase working instruction to the multiphase switching power supply and controlling the multiphase switching power supply to be in a phase working state by modifying an internal configuration file of the multiphase switching power supply;
the phase adding working instruction sending module is used for sending a phase adding working instruction to the multiphase switching power supply when the drawing of the efficiency curve chart in a phase working state is finished, and controlling the multiphase switching power supply to be in a multiphase working state by modifying an internal configuration file of the multiphase switching power supply;
and the full-phase working instruction sending module is used for sending a full-phase working instruction to the multiphase switching power supply when the efficiency curve graph in the multiphase working state is drawn, and controlling the multiphase switching power supply to be in the full-phase working state by modifying an internal configuration file of the multiphase switching power supply.
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