阅读说明：本技术 一种vr效率测试系统及测试方法 (VR efficiency test system and test method ) 是由 胡兆弟 于 2020-11-27 设计创作，主要内容包括：本发明公开了一种VR效率测试系统,包括采样模块、数据采集模块、数据处理模块和控制模块；采样模块中设有输出模块与输入模块；数据采集模块分别采集采样模块中输出电阻和输入电阻两端电压和阻值,并存入存储电压的寄存器以及存储阻值的寄存器中；数据处理模块获取所述数据采集模块中寄存器的数值,并计算效率值将效率值传输到显示模块；显示模块进行显示；控制模块控制所述数据采集模块和数据处理模块进行初始化；控制模块设置所述采样模块的采样频率；通过上述方式,本发明能够测试时保证电路结构的完整性,使得效率测试更加精准,增加了显示功能,可解决多相效率优化调试时不能直观的看到均流情况。(The invention discloses a VR efficiency testing system, which comprises a sampling module, a data acquisition module, a data processing module and a control module, wherein the sampling module is used for sampling a signal to be tested; the sampling module is internally provided with an output module and an input module; the data acquisition module respectively acquires voltages and resistance values at two ends of an output resistor and an input resistor in the sampling module and stores the voltages and the resistance values in a register for storing the voltages and a register for storing the resistance values; the data processing module acquires the numerical value of a register in the data acquisition module, calculates the efficiency value and transmits the efficiency value to the display module; the display module displays; the control module controls the data acquisition module and the data processing module to initialize; the control module sets the sampling frequency of the sampling module; by the mode, the integrity of a circuit structure can be ensured during testing, efficiency testing is more accurate, the display function is added, and the problem that the current sharing condition cannot be visually seen during multi-phase efficiency optimization debugging can be solved.)

1. A VR efficiency test system comprising: the device comprises a sampling module, a data acquisition module, a data processing module and a control module;

the sampling module is internally provided with an output module and an input module; an output resistor is arranged in the output module; an input resistor is arranged in the input module; the output module samples the current output from the inductor in the test circuit; the input module samples the current of an input inductor in the test circuit;

the data acquisition module respectively acquires the input end voltage, the output end voltage and the resistance value of the output resistor and the input resistor in the sampling module, stores the input end voltage and the output end voltage into a storage voltage register in the data acquisition module, and stores the resistance value into a storage resistance value register in the data acquisition module;

the data processing module acquires the numerical values of a storage voltage register and a storage resistance value register in the data acquisition module and calculates an efficiency value;

the control module controls the data acquisition module and the data processing module to initialize; the initialization is that the data acquisition module acquires the resistance values of the input resistor and the output resistor again, and then the data processing module acquires the numerical values of the storage voltage register and the storage resistance value register in the data acquisition module again and synchronously calculates the efficiency value.

2. The VR efficiency testing system of claim 1, wherein: a precise current source is arranged in the data acquisition module; the precision current source collects the resistance values of the output resistor and the input resistor.

3. The VR efficiency testing system of claim 2, wherein: the calculating the efficiency rate comprises the steps of:

acquiring input end voltages and output end voltages of an input resistor and an output resistor in a register for storing the voltages, and respectively calculating the voltage difference between the input end and the output end of the input resistor and the output resistor;

acquiring the resistance values of an input resistor and an output resistor in a register for storing the resistance values;

calculating the current values of the input resistor and the output resistor according to the voltage difference between the input end and the output end of the input resistor and the output resistor and the resistance values of the input resistor and the output resistor;

calculating input power according to the voltage of the input end of the input resistor and the current value of the input resistor;

calculating output power according to the voltage of the output end of the output resistor and the current value of the output resistor;

an efficiency value is calculated from the input power and the output power.

4. The VR efficiency testing system of claim 1, wherein: the control module also controls the sampling frequency of the sampling module.

5. The VR efficiency test system of claim 1, 2 or 3 in which: the LED display module also comprises a heat dissipation module, a grounding module and a display module;

the heat dissipation module dissipates heat of the input resistor and the output resistor in the sampling module, the data acquisition module, the data processing module and the control module;

a grounding lead is arranged in the grounding module and controls VR enabling;

the display module displays the efficiency value, the current sampled by the sampling module, and the voltage value and the current value in the test circuit.

6. A VR efficiency testing method, comprising:

connecting a test circuit with a test system, and testing the efficiency of a load point and the efficiency of a multiphase power supply rail;

initializing through a control module;

the data acquisition module acquires the resistance values of the input resistor and the output resistor and sets the load current of an electronic load instrument in the test circuit;

the data processing module acquires data in the data acquisition module and calculates an efficiency value.

7. The VR efficiency test method of claim 6, wherein: the test circuit comprises a test load point circuit and a test multiphase power supply rail circuit; the test multiphase power rail circuit comprises a first power rail, a second power rail and a control power rail module.

8. The VR efficiency testing method of claim 7, wherein: when the efficiency of the multiphase power supply rail is tested, if the enabling end of the second power rail in the control power rail module is connected with the grounding module in the test system, the second power rail does not receive input current, the input current supplies power to the first power rail, and the efficiency of the first power rail is tested.

9. The VR efficiency testing method of claim 7, wherein: when the efficiency of the multiphase power supply rail is tested, if the enabling end of the first power rail in the control power rail module is connected with the grounding module in the test system, the first power rail does not receive input current, the input current supplies power to the second power rail, and the efficiency of the second power rail is tested.

Technical Field

The invention relates to the field of hardware testing, in particular to a VR efficiency testing system and a VR efficiency testing method.

Background

Server applications require a high stability, high performance, high compatibility environment. The requirements for the server motherboard are quite strict due to the high operation time, high operation intensity, and huge data conversion amount, power consumption amount, I/O throughput of the server. And the data processing capacity and the processing speed are high, and the power consumption of the server board card is increased more and more. In order to cater to larger power consumption, the efficiency of a power supply VR scheme is an important parameter needing to be optimized, and how to ensure the accuracy and convenience of VR conversion testing is naturally important.

For the VR scheme on the server board card, generally, the POL and Multiphase are distinguished, efficiency of the POL is evaluated and optimized, an input inductor is removed, power is supplied to a near chip end through a DC Source, a wire is welded on an output capacitor, an electronic load instrument is connected, the voltage input to the near chip end is measured to serve as an input voltage Vin, the current value of the DC Source is read to serve as Iin, the voltage of the output capacitor is measured to serve as Vout, the current value on the electronic load instrument is read to serve as Iout, and then efficiency eta is calculated to be (Vout Iout)/(Vin Iin); for the multiple phase scheme, in addition to the efficiency calculation by the method, the Multiphase current sharing is also considered, and the problem of optimal efficiency caused by the number of phases under different loads is also considered.

No matter POL or Multiphase, the removal of an input inductor destroys a conventional power supply design circuit to a certain extent; the real output current is not only the current value obtained above the electronic load, but also the sum of the voltage level, the next level of power consumption and the load current of the electronic load instrument, so that the efficiency is low by only taking the value of the electronic load to calculate the efficiency.

For Multiphase, because of the problem of multi-phase current sharing, the efficiency of calculation is lower than the true value, and the current condition of each phase cannot be tested.

Disclosure of Invention

The invention mainly solves the technical problem of providing a VR efficiency test system and a VR efficiency test method, which can directly obtain the current flowing through a trunk circuit by directly calculating the current value of a resistor flowing through high precision through a test system, eliminate the static current of a power-on part of a post-stage circuit and realize more accurate efficiency test.

In order to solve the technical problems, the invention adopts a technical scheme that: providing a VR efficiency testing system, comprising: the device comprises a sampling module, a data acquisition module, a data processing module and a control module;

the sampling module is internally provided with an output module and an input module; an output resistor is arranged in the output module; an input resistor is arranged in the input module; the output module samples the current output from the inductor in the test circuit; the input module samples the current of an input inductor in the test circuit;

the data acquisition module respectively acquires the input end voltage, the output end voltage and the resistance value of the output resistor and the input resistor in the sampling module, stores the input end voltage and the output end voltage into a storage voltage register in the data acquisition module, and stores the resistance value into a storage resistance value register in the data acquisition module;

the data processing module acquires the numerical values of a storage voltage register and a storage resistance value register in the data acquisition module and calculates an efficiency value;

the control module controls the data acquisition module and the data processing module to initialize; the initialization is that the data acquisition module acquires the resistance values of the input resistor and the output resistor again, and then the data processing module acquires the numerical values of the storage voltage register and the storage resistance value register in the data acquisition module again and synchronously calculates the efficiency value.

Furthermore, a precise current source is arranged in the data acquisition module; the precision current source collects the resistance values of the output resistor and the input resistor.

Further, the calculating the efficiency rate comprises the steps of:

acquiring input end voltages and output end voltages of an input resistor and an output resistor in a register for storing the voltages, and respectively calculating the voltage difference between the input end and the output end of the input resistor and the output resistor;

acquiring the resistance values of an input resistor and an output resistor in a register for storing the resistance values;

calculating the current values of the input resistor and the output resistor according to the voltage difference between the input end and the output end of the input resistor and the output resistor and the resistance values of the input resistor and the output resistor;

calculating input power according to the voltage of the input end of the input resistor and the current value of the input resistor;

calculating output power according to the voltage of the output end of the output resistor and the current value of the output resistor;

an efficiency value is calculated from the input power and the output power.

Further, the control module also controls the sampling frequency of the sampling module.

Further, the LED display device also comprises a heat dissipation module, a grounding module and a display module;

the heat dissipation module dissipates heat of the input resistor and the output resistor in the sampling module, the data acquisition module, the data processing module and the control module;

a grounding lead is arranged in the grounding module and controls VR enabling;

the display module displays the efficiency value, the current sampled by the sampling module, and the voltage value and the current value in the test circuit.

A VR efficiency testing method, comprising:

connecting a test circuit with a test system, and testing the efficiency of a load point and the efficiency of a multiphase power supply rail;

initializing through a control module;

the data acquisition module acquires the resistance values of the input resistor and the output resistor and sets the load current of an electronic load instrument in the test circuit;

the data processing module acquires data in the data acquisition module and calculates an efficiency value.

Further, the test circuit includes a test point-of-load circuit and a test multiphase supply rail circuit; the test multiphase power rail circuit comprises a first power rail, a second power rail and a control power rail module.

Further, when the efficiency of the multiphase power supply rail is tested, if the enable end of the second power rail in the control power rail module is connected with the grounding module in the test system, the second power rail does not receive the input current, and the input current supplies power to the first power rail, so that the efficiency of the first power rail is tested.

Further, when the efficiency of the multiphase power supply rail is tested, if the enable end of the first power rail in the control power rail module is connected with the grounding module in the test system, the first power rail does not receive the input current, and the input current supplies power to the second power rail, so that the efficiency of the second power rail is tested.

The invention has the beneficial effects that: the invention can solve the problem that the circuit structure is completely damaged under the existing test method, so that the integrity of the circuit structure is ensured during the test, and the calculation efficiency is lower than the actual efficiency due to the fact that the output current obtained during the calculation is smaller and the input current is larger under the existing test method.

Drawings

FIG. 1 is a block diagram of a VR efficiency test system in accordance with a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of an acquisition module architecture in a VR efficiency test system according to the present invention;

FIG. 3 is a flowchart of a VR efficiency test method of the present invention;

FIG. 4 is a schematic diagram of an efficiency test circuit for a point-of-load POL in a VR efficiency test method;

FIG. 5 is a schematic diagram of an efficiency test circuit for a Multiphase Power Rail in a VR efficiency test method.

The parts in the drawings are numbered as follows: 1. a sampling module; 2. a data acquisition module; 3. a data processing module; 4. a display module; 5. a control module; 6. a heat dissipation module; 7. and a grounding module.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

The embodiment of the invention comprises the following steps:

referring to fig. 1, a VR efficiency testing system includes: the device comprises a sampling module 1, a data acquisition module 2, a data processing module 3, a display module 4, a control module 5, a heat dissipation module 6 and a grounding module 7;

referring to fig. 2, eight output sampling modules and one input sampling module are arranged in the sampling module 1; the eight-path output sampling module is provided with 8 precision resistors R1-R8; the current flowing through an output inductor in the R1-R8 input end A sampling test circuit is output sampling; the input sampling module is provided with a precision resistor R9, and the current of an input inductor in the R9 input end A sampling test circuit is input sampling; the B end of the output end of R1 to R9 is connected with a data acquisition module; r1 to R9 are high precision resistors, and the resistance value can be adjusted according to the requirement, when testing each phase circuit of Multiphase, the resistance value of the high precision resistor keeps consistent.

The data acquisition module 2 respectively acquires voltages at two ends R1-R8 and two ends R9 in the sampling module, and respectively puts the voltages into a register for storing the voltages in the data acquisition module 2, wherein a precise current source is arranged in the data acquisition module 2; when the sampling module 1 is initialized, the precise current source collects the resistance values of the R1-R9 high-precision resistors and stores the resistance values into a register of the data collection module 2.

The data processing module 3 obtains the numerical value of the register in the data acquisition module 2, calculates the efficiency value and transmits the efficiency value to the display module 4.

The display module 4 receives the efficiency value transmitted by the data processing module 3, displays the efficiency value, and displays the voltage and current values of each part in the test circuit.

Calculating the efficiency value includes: acquiring voltages at two ends of R1-R9 through a voltage storage register, and respectively calculating the voltage difference between the two ends of R1-R9; acquiring resistance values of R1-R9 through a register for storing the resistance values; dividing the voltage difference between the two ends of R1-R9 by the resistance value of the resistors R1-R9 respectively; obtaining current values from R1 to R9; then taking the A ends of R1-R8 as output voltages, and calculating output power according to the output voltages and current values; the B terminal of R9 is used as an input voltage, power is input from the input voltage and the current value, and an efficiency value is calculated from the input power and the output power.

The control module 5 mainly controls the data acquisition module 2 and the data processing module 3, and when testing is carried out, the control module 5 controls the data acquisition module 2 and the data processing module 3 to be initialized; when initialization is carried out, the data acquisition module acquires the resistance values from R1 to R9 again, and then the data processing module 3 acquires the numerical value of the register in the data acquisition module 2 again and calculates the efficiency value again; the control module 5 can also set the sampling frequency of the sampling module 1; e.g., how many times the 1 second sampling module samples.

The heat dissipation module 6 is mainly responsible for dissipating heat of the high-precision precise resistor of the sampling module 2 in the system, ensures that the resistance precision cannot be influenced by a heat effect, and also dissipates heat of the data acquisition module 3, the data processing module 4 and the control module 5 in the system, so that the working efficiency and the stability of the whole system are improved.

And a GND lead is arranged in the grounding module, so that VR enabling can be efficiently controlled on hardware.

Referring to fig. 3, embodiments of the present disclosure also provide a VR efficiency testing method,

the test method comprises an efficiency test method aiming at a load point POL and an efficiency test method aiming at a Multiphase Power Rail;

the efficiency testing method aiming at the load point POL comprises the following steps:

referring to fig. 4, a point-of-load POL test circuit is connected to a sampling module in a test system; connecting a load end with any one of output ends A from R1 to R8 in the output acquisition module, and connecting output ends B from R1 to R8 corresponding to the output ends A with the left end of an inductor L2; one end close to VR is connected with the input end A of the acquisition module, and the output end B of the acquisition module is connected with the left end of an inductor L1;

the current flowing through the resistor naturally comprises the voltage level and the sum of the next stage of electrical consumption I1 and the electronic load instrument load current I2, and the input inductance can also be reserved.

Clicking the control module for initialization, controlling the data acquisition module to acquire resistance values of resistors from R1 to R8 and R9 by the control module, and setting the load current of the electronic load instrument in the load point POL test circuit; and clicking the control module again, and controlling the data processing module to acquire data and calculate the efficiency value by the control module.

The efficiency test method for the Multiphase Power Rail comprises an efficiency test method for a Multiphase Power Rail A in the Multiphase Power Rail and an efficiency test method for a Multiphase Power Rail B in the Multiphase Power Rail;

referring to fig. 5, the load terminal is connected to the output terminals a of R1 to R8, and the output terminals B of R1 to R8 are connected to the inductor terminal of Rail a; correspondingly connecting each of the modules, and controlling a Rail A enabling end or a Rail B enabling end in the power Rail module to be connected with the grounding module; the control power rail module is connected with an input A end of R9, and the inductor L1 is connected with an input B end of R9;

when the enabling end of the Rail B in the control Rail module is connected with the grounding module, for the efficiency test of the multi-phase Power Rail A in the multi-phase Power Rail, the current flowing from R1 to R8 comprises the sum of the current I1 consumed by the Rail A and the pull-load current I2 of the electronic load instrument, meanwhile, the Rail B cannot be electrified, and the input current simply supplies Power to the Rail A, so that the accuracy of the input current is ensured; then clicking a control module for initialization, wherein the control module controls a data acquisition module to acquire resistance values of resistors from R1 to R8 and R9, and sets a load-pulling current of the electronic load instrument; and clicking the control module again, and controlling the data processing module to acquire data and calculate the efficiency value by the control module.

During testing, the current can be seen more intuitively through the display module, and which phase circuits are started in the power rail A can be seen, so that the current value of the started circuit can be seen.

When the enabling end of the Rail A in the control Rail module is connected with the grounding module, for the efficiency test of the multi-phase Power Rail B in the multi-phase Power Rail, the current flowing through R1 to R8 naturally comprises the sum of the current I1 consumed by the Rail B and the pull-load current I2 of the electronic load instrument, meanwhile, the Rail A cannot be electrified, and the input current simply supplies Power to the Rail B, so that the accuracy of the input current is ensured;

then clicking a control module for initialization, wherein the control module controls a data acquisition module to acquire resistance values of resistors from R1 to R8 and R9, and sets a load-pulling current of the electronic load instrument; and clicking the control module again, and controlling the data processing module to acquire data and calculate the efficiency value by the control module.

Wherein VR is a Voltage Regulator, which is a Chinese full name: a voltage regulator; POL, English full name Of Point Of Load, Chinese full name: the load point, POL and DC/DC voltage stabilizer at the front end of each functional unit are combined together and called as 'load point power supply', that is to say, POL, each part of circuit needs separate and non-isolated 'down/up power supply circuit' because the required voltage level is different.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.