CN116106600B - System, circuit, method and equipment for controlling electric waveform on DUT (device under test) - Google Patents
System, circuit, method and equipment for controlling electric waveform on DUT (device under test) Download PDFInfo
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- CN116106600B CN116106600B CN202310369554.8A CN202310369554A CN116106600B CN 116106600 B CN116106600 B CN 116106600B CN 202310369554 A CN202310369554 A CN 202310369554A CN 116106600 B CN116106600 B CN 116106600B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Abstract
The invention discloses a system, a circuit, a method and equipment for controlling an on-DUT electrical waveform, wherein the system comprises a main control module, a control module and a control module, wherein the main control module is used for receiving an on-DUT electrical waveform expected parameter input from the outside, calculating and outputting a corresponding power control parameter according to the on-DUT electrical waveform expected parameter; the power parameter adjusting module is connected with the main control module and the input power supply and comprises a plurality of RC adjusting units, wherein the RC adjusting units are used for adjusting the access states of the RC adjusting units according to the power control parameters and changing the output voltage slope and the output voltage initial value of the input power supply; the DUT is used for receiving the output voltage of the input power supply after being regulated by the power parameter regulating module, and outputting the DUT working condition parameters obtained after the DUT is tested according to the current output voltage to the main control module; and the main control module outputs a DUT test result according to the DUT working condition parameters and iterates the power supply control parameters until the preset test ending condition is met. The invention can improve the flexibility and accuracy of DUT test.
Description
Technical Field
The present invention relates to the field of chip testing technologies, and in particular, to a system, a circuit, a method, and an apparatus for controlling an electrical waveform on a DUT.
Background
According to different types of external power supply circuits, a device under test (device under test, DUT) can generate different types of power-on waveforms when being connected with different external power supply circuits, and different types of power-on waveforms can generate different effects on the DUT, and even cause the DUT to crash when serious, so that the DUT cannot work normally. Therefore, different power-on waveforms need to be simulated and input to the DUT in the test process of the tested device, and the power-on condition causing the DUT to crash is judged in advance.
At present, a waveform generator is generally adopted to simulate the power-on waveform generated by an external power supply circuit in the DUT test process, but the common waveform generator can only emit fixed waveforms such as sine waves, triangular waves and the like, the output power of the waveform generator is limited, and the effect of the power supply as the DUT in the DUT test process is poor.
Therefore, a DUT power-on waveform control system is needed at present, the effect of automatic test in the DUT power-on process is achieved, and meanwhile, power is supplied to the DUT in the test process through the power-on waveform with any slope and any residual voltage, so that the flexibility and accuracy of the DUT test are improved.
Disclosure of Invention
In order to solve the technical problem that the upper electric waveform generated by adopting a waveform generator to simulate an external power supply circuit in the DUT test process can not meet the test requirement, the invention provides an upper electric waveform control system, circuit, method and equipment of the DUT, which comprises the following specific technical scheme:
the invention provides an on-DUT electrical waveform control system, which comprises:
the main control module is used for receiving the upper electric waveform expected parameters input from the outside, calculating and outputting corresponding power control parameters according to the upper electric waveform expected parameters;
the power supply parameter adjusting module is connected with the main control module and the input power supply and comprises a plurality of RC adjusting units, wherein the RC adjusting units are used for receiving the power supply control parameters and adjusting the access states of the RC adjusting units according to the power supply control parameters, and the output voltage slope and the output voltage initial value of the input power supply passing through the power supply parameter adjusting module are changed;
the DUT is connected with the power parameter adjusting module and is used for receiving the output voltage of the input power supply after being adjusted by the power parameter adjusting module and outputting DUT working condition parameters obtained after the DUT is tested according to the current output voltage to the main control module;
and the main control module outputs a DUT test result according to the DUT working condition parameters and iterates the power supply control parameters until a preset test ending condition is met.
The on-DUT electrical waveform control system provided by the invention adjusts the voltage slope and the voltage initial value of the input DUT voltage by controlling the access states of the RC adjusting units, achieves the technical effect of performing DUT test by using test waveforms with any residual voltage and any slope, traverses the test results of all expected waveforms, optimizes the automatic test process of the DUT, and improves the test efficiency.
In some embodiments, the structure and element parameters of each RC regulating unit are the same, and each RC regulating unit comprises a regulating resistor, a regulating capacitor and a regulating relay;
the power control parameters comprise opening and closing state information of the regulating relay in each RC regulating unit;
and the power supply parameter adjusting module controls the access quantity of the RC adjusting unit according to the power supply control parameter.
The invention provides an on-DUT electrical waveform control system, in particular to a structure of a power parameter adjusting module, which realizes the technical effect of DUT test by testing waveforms with any residual voltage and any slope by arranging a plurality of RC adjusting units with the same structure and element parameters and controlling the access quantity of the RC adjusting units by controlling the opening and closing states of adjusting relays in each RC adjusting unit.
In some embodiments, each RC regulating unit has the same structure, and each RC regulating unit includes a regulating resistor, a regulating capacitor, and a regulating relay;
the element parameters of the adjusting resistors in each RC adjusting unit are different;
the element parameters of the adjusting capacitor in each RC adjusting unit are different;
according to the element parameters of the adjusting resistor and the adjusting capacitor, each RC adjusting unit corresponds to different expected upper electric waveform parameters one by one;
the power control parameters comprise opening and closing state information of the regulating relay in each RC regulating unit;
and the power supply parameter adjusting module controls the access state of each RC adjusting unit according to the power supply control parameters.
The invention provides an on-DUT electrical waveform control system, which particularly discloses a structure of another power parameter adjusting module, wherein a plurality of RC adjusting units with the same structure and different element parameters are arranged, corresponding RC adjusting unit parameters are preset according to test residual voltage and test voltage slope of conventional requirements, and the switching-on state of the RC adjusting units is controlled by controlling the switching-on state of an adjusting relay in each RC adjusting unit, so that the technical effect of testing the DUT by using test waveforms with any residual voltage and any slope is realized.
In some embodiments, the upper electrical waveform expected parameter includes an expected voltage slope and an expected voltage initial value;
and the main control module calculates and outputs the power control parameter according to the expected voltage slope.
In some embodiments, the master control module determines DUT power-up time according to the expected voltage initial value after the DUT initialization is completed;
the main control module calculates and outputs the power control parameters according to the DUT power-on time and the expected voltage slope, and receives the DUT working condition parameters after the preset execution time;
and when the DUT working condition parameters do not meet the parameter conditions, outputting DUT test abnormal information, wherein the DUT test abnormal information comprises the current DUT working condition parameters and the current power control parameters.
In some embodiments, the master control module determines whether the received power control parameter is the same as the current power control parameter after the DUT is initialized;
the main control module recalculates the DUT power-on time according to the expected voltage initial value when different, and the main control module powers on the DUT according to the current DUT power-on time and the power-on waveform expected parameter when the same;
when the DUT working condition parameters meet the parameter conditions, the main control module cuts off the power of the DUT and records the power-on times of re-powering the DUT according to the current DUT power-on time and the power-on waveform expected parameters;
when the power-on times meet a preset time threshold, iterating the power control parameters until the test ending condition is met;
and when the power-on times do not meet the times threshold, re-powering on the DUT according to the current power-on time of the DUT and the expected power-on waveform parameters.
In some embodiments, the master control module sends a step-down test instruction to the power parameter adjustment module, obtains a falling period when the DUT is reduced from a first preset voltage value to a second preset voltage value, and determines the DUT power-on time according to the falling period and the expected voltage initial value.
In some embodiments, according to another aspect of the present invention, there is also provided an on-DUT electrical waveform control circuit comprising:
the main control module is used for receiving the upper electric waveform expected parameters input from the outside, calculating and outputting corresponding power control parameters according to the upper electric waveform expected parameters;
the power supply parameter adjusting module is connected with the main control module and the input power supply and comprises a plurality of RC adjusting units, wherein the RC adjusting units are used for receiving the power supply control parameters and adjusting the access states of the RC adjusting units according to the power supply control parameters, and the output voltage slope and the output voltage initial value of the input power supply passing through the power supply parameter adjusting module are changed;
the main control module receives DUT working condition parameters input after the external DUT is tested according to the output voltage, outputs DUT test results according to the DUT working condition parameters, and iterates the power control parameters until preset test ending conditions are met.
In some embodiments, according to another aspect of the present invention, the present invention further provides a method for controlling an electrical waveform on a DUT, including the steps of:
receiving an upper electric waveform expected parameter input from the outside, and calculating and outputting a corresponding power control parameter according to the upper electric waveform expected parameter;
receiving the power control parameters, adjusting the access states of all RC adjusting units according to the power control parameters, and changing the output voltage slope and the output voltage initial value of an input power supply;
sending the regulated output voltage to the DUT, and outputting DUT working condition parameters obtained after the DUT tests according to the current output voltage;
outputting a DUT test result according to the DUT working condition parameters, and iterating the power supply control parameters until a preset test ending condition is met.
In some embodiments, according to another aspect of the present invention, the present invention further provides an on-DUT electrical waveform control apparatus, including the on-DUT electrical waveform control system described above.
The invention provides a system, a circuit, a method and equipment for controlling an electrical waveform on a DUT, which at least comprise the following technical effects:
(1) The voltage slope and the voltage initial value of the voltage input to the DUT are adjusted by controlling the access states of a plurality of RC adjusting units, so that the technical effect of DUT testing by using test waveforms with any residual voltage and any slope is realized, the test results of all expected waveforms are traversed, the automatic test process of the DUT is optimized, and the test efficiency is improved;
(2) The structure of the power parameter adjusting module is characterized in that a plurality of RC adjusting units with the same structure and element parameters are arranged, and the switching-in number of the RC adjusting units is controlled by controlling the switching-on and switching-off states of the adjusting relays in each RC adjusting unit, so that the technical effect of DUT test by using test waveforms with any residual voltage and any slope is realized;
(3) The structure of another power parameter adjusting module is specifically disclosed, by arranging a plurality of RC adjusting units with the same structure and different element parameters, corresponding RC adjusting unit parameters are preset according to the test residual voltage and the test voltage slope of the conventional requirements, and the switching-on state of the RC adjusting units is controlled by controlling the switching-on state of the adjusting relay in each RC adjusting unit, so that the technical effect of DUT test by using test waveforms with any residual voltage and any slope is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exemplary diagram of an on-DUT electrical waveform control system in accordance with the present invention;
FIG. 2 is an exemplary diagram of an on-DUT electrical waveform control device in accordance with the present invention;
FIG. 3 is a flow chart of a method of controlling electrical waveforms on a DUT in accordance with the present invention.
Reference numerals in the drawings: the system comprises a main control module-10, a power parameter adjusting module-20, a DUT-30 and an input power supply-40.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to facilitate a concise understanding of the drawings, components having the same structure or function in some of the drawings are depicted schematically only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
In one embodiment of the present invention, as shown in fig. 1, the present invention provides an on-DUT electrical waveform control system, which includes a main control module 10, a power parameter adjustment module 20, a DUT30, and an input power 40.
The main control module 10 is configured to receive an expected parameter of an electrical waveform input from the outside, calculate and output a corresponding power control parameter according to the expected parameter of the electrical waveform.
The power parameter adjusting module 20 is connected with the main control module 10 and the input power 40, and comprises a plurality of RC adjusting units, and is used for receiving power control parameters and adjusting the access states of the RC adjusting units according to the power control parameters, so as to change the output voltage slope and the output voltage initial value of the input power 40 passing through the power parameter adjusting module 20.
Specifically, the power parameter adjusting module 20 includes a plurality of RC adjusting units, each RC adjusting unit is a conventional RC circuit formed by a resistor and a capacitor, and by changing the total resistance parameter and the total capacitance parameter of the equivalent circuit of the RC adjusting unit connected in the power parameter adjusting module 20, the slope of the output voltage and the initial value of the output voltage of the input power 40 passing through the power parameter adjusting module 20 are changed.
The DUT30 is connected with the power parameter adjusting module 20, and is configured to receive the output voltage of the input power 40 adjusted by the power parameter adjusting module 20 as a working voltage for starting operation, collect working condition parameters of the DUT30 according to a current output voltage DUT operation intrinsic program, and output the working condition parameters of the DUT obtained after testing to the main control module 10.
The main control module 10 outputs DUT test results according to DUT working condition parameters, and iterates the power control parameters until the preset test ending conditions are met.
Specifically, after the DUT is tested according to the current electrical waveform expected parameter, the main control module 10 executes a preset iteration correction scheme on the power control parameter corresponding to the current electrical waveform expected parameter, and readjust the total resistance parameter and the total capacitance parameter of the equivalent circuit in the power parameter adjustment module 20 according to the new power control parameter after iteration correction, so as to realize the automatic test effect of the DUT 30.
Further, the main control module 10 generally adopts a control module such as a singlechip, a PLC, an FPGA and the like, the main control module 10 is internally provided with a Timer, ADC, UART component unit and the like, the Timer is mainly used for time base of a system and capturing frequency of the DUT, the ADC is mainly used for collecting power supply voltage values for the DUT at different moments, the UART is used for being in communication connection with an upper computer, and outputting DUT test results to the upper computer and receiving upper electrical waveform expected parameters input by the upper computer.
The on-DUT electrical waveform control system provided by the embodiment adjusts the voltage slope and the voltage initial value of the input DUT voltage by controlling the access states of the RC adjusting units, achieves the technical effect of performing DUT test by using test waveforms with any residual voltage and any slope, traverses the test results of all expected waveforms, optimizes the automatic test process of the DUT, and improves the test efficiency.
In one embodiment, the structure and element parameters of each RC regulating unit are the same, each RC regulating unit includes a regulating resistor, a regulating capacitor and a regulating relay, the power control parameter includes the open-close state information of the regulating relay in each RC regulating unit, and the power parameter regulating 20 module controls the number of accesses of the RC regulating units according to the power control parameter.
The embodiment provides an on-DUT electrical waveform control system, which specifically discloses a structure of a power parameter adjusting module, by arranging a plurality of RC adjusting units with the same structure and element parameters, and controlling the switching-on number of the RC adjusting units by controlling the switching-on state of an adjusting relay in each RC adjusting unit, the technical effect of DUT testing with test waveforms of any residual voltage and any slope is realized.
In one embodiment, each RC adjusting unit has the same structure, each RC adjusting unit includes an adjusting resistor, an adjusting capacitor and an adjusting relay, parameters of elements for adjusting the resistor in each RC adjusting unit are different, parameters of elements for adjusting the capacitor in each RC adjusting unit are different, each RC adjusting unit corresponds to expected parameters of different upper electrical waveforms one by one according to the parameters of elements for adjusting the resistor and the adjusting capacitor, the power control parameters include on-off state information of the adjusting relay in each RC adjusting unit, and the power parameter adjusting module 20 controls the on-state of each RC adjusting unit according to the power control parameters.
The on-DUT electrical waveform control system provided by the embodiment specifically discloses a structure of another power parameter adjusting module, by arranging a plurality of RC adjusting units with the same structure but different element parameters, corresponding RC adjusting unit parameters are preset according to test residual voltage and test voltage slopes required conventionally, and the on-state of the RC adjusting units is controlled by controlling the on-off state of the adjusting relay in each RC adjusting unit, so that the technical effect of DUT test with test waveforms with any residual voltage and any slope is realized.
In one embodiment, the power parameter adjusting module 20 is further provided with a plurality of LED indicating units, each LED indicating unit is correspondingly connected to each RC adjusting unit, and the lighting condition of each LED indicating unit is used for displaying the access state of each RC adjusting unit, for example, when a certain RC adjusting unit is accessed, the LED indicating unit corresponding to the RC adjusting unit is turned on, and when a certain RC adjusting unit is not accessed, the LED indicating unit corresponding to the RC adjusting unit is not turned on, the access state of each RC adjusting unit in the power parameter adjusting module 20 is displayed through the LED indicating unit, and thus the resistance parameter and the capacitance parameter of the equivalent circuit accessed by the power parameter adjusting module 20 are intuitively judged.
The power parameter adjustment module 20 is further provided with a plurality of analog resistors and analog inductors for simulating internal power internal resistance and internal power inductance of the power supply.
In one embodiment, the upper electrical waveform expected parameters include an expected voltage slope and an expected voltage initial value.
The main control module 10 calculates and outputs a power control parameter according to the expected voltage slope.
In some embodiments, the master module 10 determines the DUT power-up time from the expected voltage initial value after the initialization of the DUT30 is completed.
The main control module 10 calculates and outputs power control parameters according to the DUT power-on time and the expected voltage slope, and receives DUT working condition parameters after the preset execution time.
When the DUT working condition parameters meet the preset parameter conditions, the main control module 10 iterates the power supply control parameters until the preset test ending conditions are met, and when the DUT working condition parameters do not meet the preset parameter conditions, the abnormal DUT test information is output.
Specifically, the main control module 10 judges whether the DUT working condition parameters meet the preset parameter conditions, and can obtain whether the DUT working condition parameters meet the preset parameter conditions according to whether the IO flip output frequency outputted by the DUT after the DUT is tested according to the current voltage is within a certain preset flip frequency interval, wherein the DUT test abnormal information comprises the current DUT working condition parameters and the current power control parameters.
In one embodiment, the master control module 10 determines whether the received power control parameters are the same as the current power control parameters after the initialization of the DUT30 is completed.
The master control module 10 recalculates the DUT power-up time according to the expected voltage initial value at different times, and the master control module 10 powers up the DUT30 according to the current DUT power-up time and the power-up waveform expected parameter at the same time.
When the working condition parameters of the DUT meet the preset parameter conditions, the main control module 10 cuts off the power of the DUT30 and records the power-on times of re-powering the DUT30 according to the current power-on time and the expected power-on waveform parameters of the DUT, when the power-on times meet the preset time threshold, the power control parameters are iterated until the preset test ending conditions are met, and when the power-on times do not meet the preset time threshold, the DUT30 is re-electrified according to the current power-on time and the expected power-on waveform parameters of the DUT.
In one embodiment, the master control module 10 sends a step-down test instruction to the power parameter adjustment module 20, obtains a falling period during which the power parameter adjustment module 20 falls from a first preset voltage value to a second preset voltage value, and determines DUT power-up time according to the falling period and an expected voltage initial value.
Specifically, during determining the DUT power-on time, the main control module 10 may directly collect a period of time during which the power parameter adjusting module 20 drops from the initial voltage value to the expected voltage initial value, and take the period as the DUT power-on time, or collect a period of time during which the power parameter adjusting module 20 drops from the first preset voltage value to the second preset voltage value, and divide the period of time into a plurality of sub-periods, determine that the voltage drop value in each sub-period is the same, and determine the DUT power-on time according to the initial voltage value, the expected voltage initial value and the sub-period duration.
In one embodiment, according to another aspect of the present invention, the present invention also provides an on-DUT electrical waveform control circuit, comprising a main control module 10, a power parameter adjustment module 20, and an input power supply 40.
The main control module 10 is configured to receive an expected parameter of an electrical waveform input from the outside, calculate and output a corresponding power control parameter according to the expected parameter of the electrical waveform.
The power parameter adjusting module 20 is connected with the 10 main control module and the input power 40, and comprises a plurality of RC adjusting units, wherein the RC adjusting units are used for receiving power control parameters and adjusting the access states of the RC adjusting units according to the power control parameters, and the slope of the output voltage and the initial value of the output voltage of the input power passing through the power parameter adjusting module 20 are changed.
The main control module 10 receives DUT working condition parameters input after the external DUT is tested according to the output voltage, outputs DUT test results according to the DUT working condition parameters, and iterates the power control parameters until the preset test ending condition is met.
Specifically, after the DUT is tested according to the current electrical waveform expected parameter, the main control module 10 executes a preset iteration correction scheme on the power control parameter corresponding to the current electrical waveform expected parameter, and readjust the total resistance parameter and the total capacitance parameter of the equivalent circuit in the power parameter adjustment module 20 according to the new power control parameter after iteration correction, so as to realize the automatic test effect of the DUT 30.
The on-DUT electrical waveform control system provided by the embodiment adjusts the voltage slope and the voltage initial value of the input DUT voltage by controlling the access states of the RC adjusting units, achieves the technical effect of performing DUT test by using test waveforms with any residual voltage and any slope, traverses the test results of all expected waveforms, optimizes the automatic test process of the DUT, and improves the test efficiency.
In one embodiment, according to another aspect of the present invention, the present invention further provides a method for controlling an electrical waveform on a DUT, including the steps of:
s100, receiving an expected parameter of the upper electric waveform input from the outside, and calculating and outputting a corresponding power control parameter according to the expected parameter of the upper electric waveform.
S200, receiving the power control parameters, adjusting the access states of the RC adjusting units according to the power control parameters, and changing the output voltage slope and the output voltage initial value of the input power supply.
S300, sending the regulated output voltage to the DUT, and outputting DUT working condition parameters obtained after the DUT is tested according to the current output voltage.
S400, outputting a DUT test result according to the DUT working condition parameters, and iterating the power supply control parameters until the preset test ending condition is met.
In one embodiment, according to another aspect of the present invention, the present invention further provides an on-DUT electrical waveform control apparatus, including the on-DUT electrical waveform control system described above.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the parts of a certain embodiment that are not described or depicted in detail may be referred to in the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the elements and steps of the examples described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or as a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed system, circuit, method and apparatus for controlling an electrical waveform on a DUT may be implemented in other manners. For example, one on-DUT electrical waveform control system, circuit, method and apparatus embodiment described above is merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or modules may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the communications links shown or discussed may be through some interface, device or unit communications link or integrated circuit, whether electrical, mechanical or otherwise.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
It should be noted that the foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (10)
1. An on-DUT electrical waveform control system, comprising:
the main control module is used for receiving the upper electric waveform expected parameters input from the outside, calculating and outputting corresponding power control parameters according to the upper electric waveform expected parameters;
the power supply parameter adjusting module is connected with the main control module and the input power supply and comprises a plurality of RC adjusting units, wherein the RC adjusting units are used for receiving the power supply control parameters and adjusting the access states of the RC adjusting units according to the power supply control parameters, and the output voltage slope and the output voltage initial value of the input power supply passing through the power supply parameter adjusting module are changed;
the DUT is connected with the power parameter adjusting module and is used for receiving the output voltage of the input power supply after being adjusted by the power parameter adjusting module and outputting DUT working condition parameters obtained after the DUT is tested according to the current output voltage to the main control module;
the main control module outputs a DUT test result according to the DUT working condition parameters, and iterates the power supply control parameters until a preset test ending condition is met;
the iteration of the power control parameters until the preset test ending condition is met specifically comprises the following steps:
and iterating the power control parameters until the expected waveforms corresponding to the expected parameters of the power-on waveforms are traversed.
2. The DUT electrical waveform control system of claim 1, wherein,
the RC adjusting units have the same structure and element parameters, and each RC adjusting unit comprises an adjusting resistor, an adjusting capacitor and an adjusting relay;
the power control parameters comprise opening and closing state information of the regulating relay in each RC regulating unit;
and the power supply parameter adjusting module controls the access quantity of the RC adjusting unit according to the power supply control parameter.
3. The DUT electrical waveform control system of claim 1, wherein,
the RC adjusting units have the same structure, and each RC adjusting unit comprises an adjusting resistor, an adjusting capacitor and an adjusting relay;
the element parameters of the adjusting resistors in each RC adjusting unit are different;
the element parameters of the adjusting capacitor in each RC adjusting unit are different;
according to the element parameters of the adjusting resistor and the adjusting capacitor, each RC adjusting unit corresponds to different expected upper electric waveform parameters one by one;
the power control parameters comprise opening and closing state information of the regulating relay in each RC regulating unit;
and the power supply parameter adjusting module controls the access state of each RC adjusting unit according to the power supply control parameters.
4. A DUT electrical waveform control system as in claim 2 or 3 wherein,
the upper electric waveform expected parameters comprise an expected voltage slope and an expected voltage initial value;
and the main control module calculates and outputs the power control parameter according to the expected voltage slope.
5. The DUT electrical waveform control system of claim 4, wherein,
after the initialization of the DUT is finished, the main control module determines the DUT power-on time according to the expected voltage initial value;
the main control module calculates and outputs the power control parameters according to the DUT power-on time and the expected voltage slope, and receives the DUT working condition parameters after the preset execution time;
and when the DUT working condition parameters do not meet the parameter conditions, outputting DUT test abnormal information, wherein the DUT test abnormal information comprises the current DUT working condition parameters and the current power control parameters.
6. The DUT electrical waveform control system of claim 5, wherein,
after the initialization of the DUT is finished, the main control module judges whether the received power control parameters are the same as the current power control parameters;
the main control module recalculates the DUT power-on time according to the expected voltage initial value when different, and the main control module powers on the DUT according to the current DUT power-on time and the power-on waveform expected parameter when the same;
when the DUT working condition parameters meet the parameter conditions, the main control module cuts off the power of the DUT and records the power-on times of re-powering the DUT according to the current DUT power-on time and the power-on waveform expected parameters;
when the power-on times meet a preset time threshold, iterating the power control parameters until the test ending condition is met;
and when the power-on times do not meet the times threshold, re-powering on the DUT according to the current power-on time of the DUT and the expected power-on waveform parameters.
7. The DUT electrical waveform control system of claim 5, wherein,
the main control module sends a step-down test instruction to the power parameter adjustment module, acquires a falling period when the DUT is reduced from a first preset voltage value to a second preset voltage value, and determines the DUT power-on time according to the falling period and the expected voltage initial value.
8. An on-DUT electrical waveform control circuit comprising:
the main control module is used for receiving the upper electric waveform expected parameters input from the outside, calculating and outputting corresponding power control parameters according to the upper electric waveform expected parameters;
the power supply parameter adjusting module is connected with the main control module and the input power supply and comprises a plurality of RC adjusting units, wherein the RC adjusting units are used for receiving the power supply control parameters and adjusting the access states of the RC adjusting units according to the power supply control parameters, and the output voltage slope and the output voltage initial value of the input power supply passing through the power supply parameter adjusting module are changed;
the main control module receives DUT working condition parameters input after the external DUT is tested according to the output voltage, outputs DUT test results according to the DUT working condition parameters, and iterates the power control parameters until preset test ending conditions are met;
the main control module is specifically configured to iterate the power control parameter until the expected waveforms corresponding to the expected parameters of the power waveform are traversed.
9. A method for controlling an electrical waveform on a DUT, comprising the steps of:
receiving an upper electric waveform expected parameter input from the outside, and calculating and outputting a corresponding power control parameter according to the upper electric waveform expected parameter;
receiving the power control parameters, adjusting the access states of all RC adjusting units according to the power control parameters, and changing the output voltage slope and the output voltage initial value of an input power supply;
sending the regulated output voltage to the DUT, and outputting DUT working condition parameters obtained after the DUT tests according to the current output voltage;
outputting a DUT test result according to the DUT working condition parameters, and iterating the power supply control parameters until a preset test ending condition is met;
the iteration of the power control parameters until the preset test ending condition is met specifically comprises the following steps:
and iterating the power control parameters until the expected waveforms corresponding to the expected parameters of the power-on waveforms are traversed.
10. An on-DUT electrical waveform control apparatus comprising the on-DUT electrical waveform control system of any one of claims 1-7.
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| FR2334961A1 (en) * | 1975-12-09 | 1977-07-08 | Schlumberger Compteurs | TIME BASE CONTROL CIRCUIT FOR AN OSCILLOGRAPH |
| TWI279987B (en) * | 2004-06-04 | 2007-04-21 | Leadtrend Tech Corp | Dual-slope adaptive frequency controller with power conversion adjustment |
| US8324935B2 (en) * | 2008-10-09 | 2012-12-04 | Nxp B.V. | Bus driver circuit |
| CN101882864B (en) * | 2010-06-25 | 2012-08-22 | 矽力杰半导体技术(杭州)有限公司 | Electrifying startup circuit and electrifying startup method thereof |
| US9312844B2 (en) * | 2012-11-15 | 2016-04-12 | Microchip Technology Incorporated | Slope compensation module |
| CN105141303B (en) * | 2015-08-31 | 2018-08-03 | 晶焱科技股份有限公司 | Slope control circuit |
| CN107656484B (en) * | 2017-11-15 | 2023-09-26 | 巢湖学院 | Hardware watchdog safety setting circuit |
| CN111209182B (en) * | 2018-11-22 | 2022-06-14 | 长鑫存储技术有限公司 | Integrated circuit power-on test method and device, storage medium and electronic equipment |
| CN109639134A (en) * | 2019-01-11 | 2019-04-16 | 上海艾为电子技术股份有限公司 | A kind of slope control circuit |
| CN209435105U (en) * | 2019-02-20 | 2019-09-24 | 广州视源电子科技股份有限公司 | A kind of soft starting circuit and electronic equipment |
| CN214041597U (en) * | 2020-12-30 | 2021-08-24 | 上海东软载波微电子有限公司 | Power-on and power-off test system |
| CN114966384A (en) * | 2022-05-07 | 2022-08-30 | 上汽通用五菱汽车股份有限公司 | Relay durability test method, device, equipment and storage medium |
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