Testing head and testing machine capable of independently controlling power-on and power-off

Abstract

The utility model relates to the field of chip testing, in particular to a testing head and a testing machine capable of independently controlling power-on and power-off, and the testing head comprises a plurality of resource boards, a communication board and a plurality of power supply boards; the communication board is used for receiving a power-on control instruction or a power-off control instruction from the industrial personal computer and analyzing and generating a corresponding power-on enable signal or a power-off enable signal; each power supply board is in communication connection with the communication board and is used for converting an input first power supply voltage into a second power supply voltage and outputting the second power supply voltage to the corresponding resource board under the condition that a power-on enable signal is received, so that the power-on of the resource board is realized; and when a power-off enable signal is received, stopping outputting the second power supply voltage to the corresponding resource board, and realizing power-off of the resource board. According to the invention, power-on and power-off independent control of the resource board is realized.

Description

Technical Field

[0001] The present application relates to the field of chip testing, and in particular to a test head and a test machine with independent upper and lower power control. Background Art

[0002] Chip testing refers to the use of a tester to detect various parameters of the device under test, eliminating defective products to control the quality of semiconductor devices before they leave the factory. The tester includes a test head, and the slots in the test head are equipped with resource boards.

[0003] In the prior art, since it is not possible to power on and off the slots individually, each time a resource board is replaced, the entire test machine must be powered off and then the resource board is replaced, resulting in low test efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide a test head and a test machine with independent control of upper and lower power to address the above technical problems.

[0005] In a first aspect, an embodiment of the utility model provides a test head with independent upper and lower power control, comprising a plurality of resource boards, the test head further comprising a communication board and a plurality of power boards;

[0006] The communication board is used to receive a power-on control instruction or a power-off control instruction from the industrial computer, and parse and generate a corresponding power-on enable signal or a power-off enable signal;

[0007] Each of the power boards is communicatively connected to the communication board, and is used for, upon receiving a power-on enable signal, converting the input first power supply voltage into a second power supply voltage and outputting it to the corresponding resource board, thereby powering on the resource board; and upon receiving a power-off enable signal, stopping outputting the second power supply voltage to the corresponding resource board, thereby powering off the resource board.

[0008] In one embodiment, each of the resource boards includes a management unit, and the communication board includes a processing chip;

[0009] Each of the management units is used to obtain the operating parameters of the respective resource board;

[0010] The processing chip is communicatively connected to each of the management units, and is used to obtain the operating parameters of each of the resource boards, determine whether the working status of the corresponding resource board is abnormal based on the operating parameters, and output a power-off enable signal to the corresponding resource board in the event of an abnormality.

[0011] In one embodiment, the processing chip is further configured to generate abnormal information when determining that the working state of the corresponding resource board is abnormal, and upload the operating parameters of each resource board and the abnormal information to the industrial computer.

[0012] In one embodiment, the test head further comprises a breakout frame;

[0013] The first power supply voltage is input to the input side of the branch frame, and the output side of the branch frame is electrically connected to the communication board and each of the power supply boards.

[0014] In one embodiment, the communication board further includes a first protocol conversion chip;

[0015] The first protocol conversion chip is communicatively connected to the processing chip, and is used to convert a power-on control instruction or a power-off control instruction based on the first communication protocol into a power-on control instruction or a power-off control instruction based on the second communication protocol, and output it to the processing chip.

[0016] In one embodiment, the communication board and the industrial computer are communicatively connected via a communication cable;

[0017] One end of the communication cable is a first communication interface male head, which is communicatively connected to the first communication interface female head of the industrial computer; the other end of the communication cable is a second communication interface male head, which is communicatively connected to the second communication interface female head of the communication board.

[0018] In one embodiment, the first communication interface is a USB communication interface, and the second communication interface is a DB9 communication interface.

[0019] In one embodiment, the test head further includes a backplane, the backplane includes an interface connector, and the communication board further includes a second protocol conversion chip;

[0020] One side of the interface connector is connected to each resource board through a third communication interface, and the other side is connected to the second protocol conversion chip through a third communication interface;

[0021] The second protocol conversion chip is connected to the processing chip and is used to convert the operating parameters based on the third communication protocol into operating parameters based on the second communication protocol and output them to the processing chip.

[0022] In one embodiment, the third communication interface is an RS485 communication interface.

[0023] In a second aspect, an embodiment of the utility model provides a test machine, comprising an electrical cabinet and a test head as described in the first aspect, wherein the electrical cabinet comprises an industrial computer and a power supply unit;

[0024] The industrial computer is communicatively connected with the test head and is used to send a power-on control instruction or a power-off control instruction;

[0025] The power supply unit is electrically connected to the test head and is used to provide a first power supply voltage.

[0026] Compared with the prior art, the technical solution has the following technical effects: using a communication board to receive a power-on control instruction or a power-off control instruction from an industrial computer, and parsing to generate a corresponding power-on enable signal or a power-off enable signal, and using each power board to convert the input first power supply voltage into a second power supply voltage and output it to the corresponding resource board when receiving a power-on enable signal, thereby powering on the resource board; when receiving a power-off enable signal, stopping outputting the second power supply voltage to the corresponding resource board, thereby powering off the resource board, and when the resource board is replaced, it does not affect the work of other resource boards, so the testing efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a connection diagram of a test head with independent upper and lower electrical control in one embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the connection between the industrial computer and the communication board in one embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the connection between the communication board and the power board in one embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the connection between the industrial computer, the resource board and the backplane in one embodiment of the utility model;

[0031] Figure 5 This is a connection diagram of a distribution frame in one embodiment of the utility model;

[0032] Figure 6 It is a connection diagram of a testing machine in one embodiment of the utility model.

[0033] Among them, 10, electrical cabinet; 20, test head; 110, industrial computer; 120, power supply unit; 210, backplane; 211, interface connector; 220, resource board; 221, management unit; 230, communication board; 231, processing chip; 232, first protocol conversion chip; 233, second protocol conversion chip; 240, power board; 241, power conversion module; 250, distribution rack. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0036] Reference to "embodiments" in this application means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in multiple embodiments of the application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0037] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0038] like Figure 1As shown, this embodiment proposes a test head with independent power-on and power-off control, including multiple resource boards 220, communication boards 230 and multiple power boards 240. The communication board 230 is used to receive the power-on control instruction or the power-off control instruction from the industrial computer 110, and parse and generate the corresponding power-on enable signal or the power-off enable signal; each power board 240 is connected to the communication board 230 for communication, and is used to convert the input first power supply voltage into the second power supply voltage and output it to the corresponding resource board 220 when receiving the power-on enable signal, so as to power on the resource board 220; when receiving the power-off enable signal, it stops outputting the second power supply voltage to the corresponding resource board 220, so as to power off the resource board 220.

[0039] Exemplarily, 16 resource boards 220 are provided in the test head 20, and correspondingly, 16 power boards 240 are also provided. The first power supply voltage is a 48V power supply, and the 48V power supply is output to the communication board 230 and each power board 240 through the branching frame 250 in the test head 20. When receiving a power-on enable signal, the power board 240 converts the 48V power supply into a second power supply voltage 12V power supply through the power conversion module 241 and outputs it to the corresponding resource board 220, thereby powering on the resource board 220. When receiving a power-off enable signal, the 12V power supply is not output to the corresponding resource board 220, that is, 0V is output, thereby powering off the resource board 220.

[0040] In this embodiment, each resource board 220 has its own corresponding power board 240, and the communication board 230 parses and generates a power-on enable signal or a power-off enable signal of the power board 240, thereby realizing independent power-on and power-off control of the resource board 220. When replacing a resource board 220, only the resource board 220 needs to be powered off, while other resource boards 220 work normally without affecting the test.

[0041] In a further embodiment, each resource board 220 includes a management unit 221, and the communication board 230 includes a processing chip 231. Each management unit 221 is used to obtain the operating parameters of the respective resource board 220. The processing chip 231 is communicatively connected with each management unit 221, and is used to sequentially obtain the operating parameters of each resource board 220, determine whether the working state of the corresponding resource board 220 is abnormal according to the operating parameters, and output a power-off enable signal to the corresponding resource board 220 in the case of an abnormality.

[0042] The management unit 221 may be a microcontroller unit such as an MCU.

[0043] The operating parameters include, for example, temperature parameters. When the processing chip 231 determines that the temperature parameter is greater than the temperature threshold, it determines that the operating state of the corresponding resource board 220 is abnormal, and generates abnormal information.

[0044] The processing chip 231 also uploads the operating parameters and abnormal information of each resource board 220 to the industrial computer 110 for storage.

[0045] In this embodiment, the processing chip 231 obtains the operating parameters of each resource board 220 from each management unit 221 to monitor the working status of each resource board 220 .

[0046] In one embodiment, if Figure 2 As shown, the communication board 230 is connected to the industrial computer 110 through a communication cable. Since the industrial computer 110 and the communication board 230 usually use different communication interfaces, the communication cable needs to realize the conversion of the communication interface. One end of the communication cable is a first communication interface male head, which is connected to the first communication interface female head of the industrial computer 110; the other end of the communication cable is a second communication interface male head, which is connected to the second communication interface female head of the communication board 230.

[0047] The communication board 230 also includes a first protocol conversion chip 232. The first protocol conversion chip 232 is connected to the processing chip 231 for converting a power-on control instruction or a power-off control instruction based on the first communication protocol into a power-on control instruction or a power-off control instruction based on the second communication protocol, and outputting the power-on control instruction or the power-off control instruction to the processing chip 231.

[0048] Exemplarily, the industrial computer 110 communicates with the communication board 230 using an RS232 communication interface (second communication interface), and the industrial computer 110 generally uses a USB communication interface (first communication interface). The communication cable uses a USB to RS232 cable. One end of the USB to RS232 cable is a USB interface male head, connected to the USB interface female head of the industrial computer 110, and the other end is a DB9 interface male head, connected to the DB9 interface female head of the communication board 230. The DB9 interface male head line sequence uses the standard RS232 line sequence definition.

[0049] The first protocol conversion chip 232 on the communication board 230 uses the RS232 to serial port chip TPT3232E to convert the power-on control instructions or power-off control instructions based on the RS232 communication protocol (first communication protocol) on the cable into power-on control instructions or power-off control instructions based on the serial port communication protocol (second communication protocol) that can be received by the processing chip 231.

[0050] In this embodiment, the instructions of the industrial computer 110 can be sent through the communication cable, the whole machine is easy to assemble and operate, and has high maintainability.

[0051] In one embodiment, if Figure 3As shown, each power board 240 includes a power conversion module 241 for converting the first power supply voltage of the power supply unit 120 into a second power supply voltage. A connector is provided on each of the communication board 230 and the power board 240 to transmit the enable signal to the power board 240 through wiring.

[0052] The power conversion module 241 is connected to the IO port of the processing chip 231, and controls the high and low level states of the IO port to control whether the power module outputs 12V power. The IO port outputs a high level signal (a voltage greater than 2.1V is determined as a high level), that is, a power-on enable signal, and the power conversion module 241 can output 12V power; the IO port outputs a low level signal (a voltage less than 0.6V is determined as a low level), that is, a power-off enable signal, and the power conversion module 241 does not output 12V power. Each power board 240 corresponds to an enable signal, which corresponds to one IO pin of the processing chip 231.

[0053] When the power board 240 outputs 12V power, it is equivalent to powering on the resource board 220 in the slot; when the power board 240 does not output 12V power, it is equivalent to powering off the resource board 220 in the slot.

[0054] Since each resource board 220 has an independent power board 240, the power supply capacity requirement for the power board 240 can be reduced. At the same time, since the power conversion module 241 is arranged on the power board 240, the circuit design space of the resource board 220 can be greatly increased. Moreover, the power conversion module 241 has strong radiation. If it is placed on the resource board 220, it is easy to interfere with the signal on the board. However, if it is placed on the power board 240, shielding measures can be added to keep it away from the resource board 220 to avoid interference with the signal of the resource board 220.

[0055] In one embodiment, if Figure 4 As shown, the backplane 210 includes an interface connector 211, and the communication board 230 also includes a second protocol conversion chip 233. One side of the interface connector 211 is connected to the management unit 221 of each resource board 220 through a third communication interface, and the other side is connected to the second protocol conversion chip 233 through the third communication interface; the second protocol conversion chip 233 is connected to the processing chip 231, and is used to convert the operating parameters based on the third communication protocol into the operating parameters based on the second communication protocol.

[0056] Exemplarily, each resource board 220 is equipped with a management unit 221, which is connected to the RS485 communication bus through the backplane 210. After the resource board 220 is powered on, the management unit 221 will obtain the operating parameters (such as temperature parameters) on the resource board 220 in real time. An RS485 to serial port chip is placed on the communication board 230 to convert the operating parameters of the RS485 communication protocol (third communication protocol) into operating parameters of the serial port communication protocol (second communication protocol) acceptable to the processing chip 231. The processing chip 231 polls the management units 221 of all resource boards 220 through the RS485 bus, obtains the operating parameters of all resource boards 220, and reports them to the industrial computer 110.

[0057] Since each resource board 220 is provided with a management unit 221, when the processing chip 231 finds that the working state of a resource board 220 is abnormal, such as the temperature is too high, it will actively control the resource board 220 to power off, and report the abnormal information and the power-off operation to the industrial computer 110.

[0058] In one embodiment, if Figure 5 As shown, the test head 20 includes a breakout frame 250. The breakout frame 250 has an input side that inputs a first power supply voltage, and an output side that is electrically connected to the communication board 230 and each power board 240.

[0059] Since the splitter frame inputs the first power supply voltage (e.g., 48V) instead of directly converting it into the second power supply voltage (e.g., 12V), the current on the wiring can be reduced, thereby reducing the thickness of the communication cable and making it more convenient to pull the cable. At the same time, since the splitter frame 250 is integrated in the test head 20, the number of external communication cables can be reduced, and the occupied space and aesthetics of the whole machine can be reduced.

[0060] Benru Figure 6 As shown, this embodiment proposes a test machine, including an electrical cabinet 10 and a test head 20 as in the above embodiment, the electrical cabinet 10 includes an industrial computer 110 and a power supply unit 120; the industrial computer 110 is communicatively connected with the test head 120 for sending power-on control instructions or power-off control instructions; the power supply unit 120 is electrically connected with the test head 20 for providing a first power supply voltage.

[0061] The power supply unit 120 may convert the inputted mains voltage 380V into the first power supply voltage 48V.

[0062] Since the testing machine includes the testing head in the above embodiment, it can solve the same technical problem and achieve the same technical effect, which will not be described in detail here.

[0063] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A test head with independent power-up and power-down control, comprising a plurality of resource boards, characterized in that: The test head also includes a communication board and a plurality of power supply boards; The communication board is used to receive a power-on control instruction or a power-off control instruction from the industrial computer, and parse and generate a corresponding power-on enable signal or a power-off enable signal; Each of the power boards is communicatively connected to the communication board, and is used for, upon receiving a power-on enable signal, converting the input first power supply voltage into a second power supply voltage and outputting it to the corresponding resource board, thereby powering on the resource board; and upon receiving a power-off enable signal, stopping outputting the second power supply voltage to the corresponding resource board, thereby powering off the resource board.

2. The test head with independent upper and lower power control according to claim 1, characterized in that: Each of the resource boards includes a management unit, and the communication board includes a processing chip; Each of the management units is used to obtain the operating parameters of the respective resource board; The processing chip is communicatively connected to each of the management units, and is used to obtain the operating parameters of each of the resource boards, determine whether the working status of the corresponding resource board is abnormal based on the operating parameters, and output a power-off enable signal to the corresponding resource board in the event of an abnormality.

3. The test head with independent upper and lower power control according to claim 2, characterized in that: The processing chip is also used to generate abnormal information when it is determined that the working state of the corresponding resource board is abnormal, and upload the operating parameters of each resource board and the abnormal information to the industrial computer.

4. The test head with independent upper and lower power control according to claim 1, characterized in that: The test head also includes a breakout frame; The first power supply voltage is input to the input side of the branch frame, and the output side of the branch frame is electrically connected to the communication board and each of the power supply boards.

5. The test head with independent upper and lower power control according to claim 2, characterized in that: The communication board also includes a first protocol conversion chip; The first protocol conversion chip is communicatively connected to the processing chip, and is used to convert a power-on control instruction or a power-off control instruction based on the first communication protocol into a power-on control instruction or a power-off control instruction based on the second communication protocol, and output it to the processing chip.

6. The test head with independent upper and lower power control according to claim 5, characterized in that: The communication board and the industrial computer are connected to each other through a communication cable; One end of the communication cable is a first communication interface male head, which is communicatively connected to the first communication interface female head of the industrial computer; the other end of the communication cable is a second communication interface male head, which is communicatively connected to the second communication interface female head of the communication board.

7. The test head with independent upper and lower power control according to claim 6, characterized in that: The first communication interface is a USB communication interface, and the second communication interface is a DB9 communication interface.

8. The test head with independent upper and lower power control according to claim 7, characterized in that: The test head further includes a backplane, the backplane includes an interface connector, and the communication board further includes a second protocol conversion chip; One side of the interface connector is connected to each resource board through a third communication interface, and the other side is connected to the second protocol conversion chip through a third communication interface; The second protocol conversion chip is connected to the processing chip and is used to convert the operating parameters based on the third communication protocol into operating parameters based on the second communication protocol and output them to the processing chip.

9. The test head with independent upper and lower power control according to claim 8, characterized in that: The third communication interface is an RS485 communication interface.

10. A testing machine, characterized in that: It comprises an electrical cabinet and a test head as claimed in any one of claims 1 to 9, wherein the electrical cabinet comprises an industrial computer and a power supply unit; The industrial computer is communicatively connected with the test head and is used to send a power-on control instruction or a power-off control instruction; The power supply unit is electrically connected to the test head and is used to provide a first power supply voltage.

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