Adjustable aging signal generating device and method

Abstract

The invention discloses an adjustable generation device and method for aging signals. The adjustable generation device comprises a voltage conversion module, a signal generation module and a signal amplification module. The voltage conversion module provides a power supply for each module in the adjustable signal generation device, and the signal generation module generates high-stability, high-precision and high-quality sine waves, square waves and triangular waves. Amplitude and frequency modulation is carried out on the output waveform by external voltage; an N-channel enhanced field effect transistor is selected by the signal amplification module, and by means of the negative resistance characteristic of the N-channel enhanced field effect transistor, large output voltage is generated after positive voltage is added to the input end of the N-channel enhanced field effect transistor. According to the invention, a multi-path adjustable signal output function is realized, and sine waves, square waves and triangular waves with adjustable amplitude and frequency can be output; on the basis of covering the function of the existing signal source, the signal amplitude is improved from 10V to 35V, the number of output signal ports of a single device is improved from 2 to 12, the size of the device is reduced, the usage amount of the device is reduced, and the resource utilization rate and the aging power-up efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated circuit aging test, and in particular to an adjustable generating device and method of an aging signal. Background Art

[0002] At present, most of the driving signals of the aging test need to use an external signal source. The traditional signal source has a weak load capacity. When encountering products with large signal driving current, it will be found that the number of stations that can be driven by a single signal source is very limited. At this time, it is necessary to use multiple signal sources for powering or perform aging in batches. This power-on method not only causes equipment shortages and wastes resources, but also affects the progress of the test.

[0003] The signal amplitude range that the existing signal source can provide is limited (-10 ~ 10V), which cannot meet the test requirements of some special circuits. Therefore, it is necessary to provide a method for generating a burn-in signal with strong driving capability that can meet the special test requirements. Summary of the invention

[0004] The object of the present invention is to provide an adjustable generating device and method of an aging signal to solve the problems in the background technology.

[0005] In order to solve the above technical problems, the present invention provides an adjustable generation method of an aging signal, comprising: a voltage conversion module, a signal generation module, and a signal amplification module; wherein:

[0006] The voltage conversion module provides power to each module in the adjustable signal generating device.

[0007] The signal generation module uses a single-chip function generator integrated circuit to generate high-quality sine waves, square waves and triangle waves with high stability and high precision; the output waveform is amplitude and frequency modulated by an external voltage;

[0008] The signal amplification module uses an N-channel enhancement field effect transistor and utilizes its negative resistance characteristic to generate a relatively large output voltage after a positive voltage is added to the input terminal.

[0009] In one embodiment, the adjustable generating device further includes a bus transceiver to increase the driving capability, and the number of output signals increases from 1 to 6.

[0010] In one embodiment, the voltage conversion module uses a voltage conversion chip. In order to take into account the 35V voltage required by the MOS tube, a 2*10 double-row pin is selected to facilitate the connection of an external power supply device to power the field effect transistor; a CJ7809 voltage conversion chip with a maximum current of 1.5A and an adjustable voltage range of 8.55-9.45V is selected as the first power output to meet the driving voltage and current required by the signal generating chip; an L7805CV chip with a maximum current of 1.2A and an adjustable voltage range of 5-18V is selected as the second power output to provide the required driving voltage for the 16-bit dual-power bus transceiver.

[0011] The present invention also provides an adjustable generation method of an aging signal, comprising the following steps:

[0012] Step S1: designing a PCB board, wherein the PCB board includes a voltage conversion module, a signal generation module, and a signal amplification module;

[0013] Step S2: Providing corresponding power to the PCB board through an external voltage source;

[0014] Step S3: the voltage conversion module converts the external voltage and outputs the voltage required by each module;

[0015] Step S4: after receiving the required voltage, the signal generating module outputs an initial signal;

[0016] Step S5: Select whether the jumper cap is short-circuited according to the requirements. When the jumper cap is short-circuited, the device outputs sine waves and square waves. When the jumper cap is disconnected, the device outputs triangular waves and square waves.

[0017] Step S6: Select a suitable signal frequency range according to requirements;

[0018] Step S7: increasing the driving capability of the output signal through the bus transceiver;

[0019] Step S8: amplifying the signal amplitude through the signal amplification module and outputting a driving signal that meets the requirements;

[0020] Step S9: Connect the adjustable signal generating board to the aging test board, apply a driving signal to the aging test board, and perform an aging screening test.

[0021] The present invention provides an adjustable generation device and method of an aging signal, which has the following beneficial effects:

[0022] (1) In combination with the current requirements of integrated circuit aging tests, select a suitable signal generation chip that can output sine waves, square waves, and triangle waves with adjustable frequency and amplitude;

[0023] (2) Use LDO chips to convert the power supply voltage to provide the voltage required by each chip and improve resource utilization;

[0024] (3) Use MOS tubes for signal amplification. The power of the MOS tubes can be adjusted according to demand to change the amplitude of the signal. Use a bus transceiver circuit to increase the driving capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural block diagram of an adjustable aging signal generating device.

[0026] Figure 2 This is a diagram showing the use of an adjustable aging signal generating device. DETAILED DESCRIPTION

[0027] The following is a further detailed description of an adjustable generation device and method of an aging signal proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0028] All the components selected in the present invention are of industrial grade or above. The multi-layer circuit board needs to have a high TG value and a surface gold immersion process.

[0029] The present invention provides an adjustable generation method of an aging signal, based on Figure 1 The adjustable signal generating device for aging power-up shown in FIG. 1 includes a voltage conversion module, a signal generating module, and a signal amplifying module. The functional block diagram thereof is shown in FIG. Figure 1 As shown, where:

[0030] The voltage conversion module is mainly responsible for providing power to each module in the adjustable signal generating device. In order to use as little external power as possible to meet the different driving voltages required by each module, a voltage conversion chip is selected for design. In order to take into account the 35V voltage required by the MOS tube, this device uses 2*10 double-row pins to facilitate access to external power equipment to power the field effect transistor; in addition, the CJ7809 voltage conversion chip is selected with a maximum current of 1.5A and an adjustable voltage range of 8.55-9.45V as the first power output, which can meet the driving voltage and current required by the signal generating chip; the L7805CV chip is selected with a maximum current of 1.2A and an adjustable voltage range of 5-18V as the second power output to provide the required driving voltage for the 16-bit dual-power bus transceiver.

[0031] The signal generation module uses a single-chip function generator integrated circuit, which can generate high-quality sine waves, square waves and triangle waves with high stability and high precision; the output waveform can be modulated in amplitude and frequency by an external voltage.

[0032] The signal amplification module uses N-channel enhancement field effect transistors, which can generate a larger output voltage after adding a positive voltage to the input terminal by utilizing its negative resistance characteristics. The power of the field effect transistor is adjusted according to demand to change the signal amplitude to achieve the signal amplitude amplification effect, and the 0-9V signal amplitude is increased to 0-35V; at the same time, a bus transceiver is selected to increase the driving capability, and the number of output signals is increased from 1 to 6.

[0033] The present invention provides an adjustable method for generating an aging signal, such as Figure 2 As shown, the specific implementation steps of the method are as follows:

[0034] Step S1: designing a PCB board, wherein the PCB board includes a voltage conversion module, a signal generation module, and a signal amplification module;

[0035] Step S2: Providing corresponding power to point ① of the PCB board through an external voltage source;

[0036] Step S3: the voltage conversion module converts the external voltage and outputs the voltage required by each module;

[0037] Step S4: After receiving the required voltage, the signal generating module outputs an initial signal;

[0038] Step S5: Select whether to short-circuit jumper cap ② according to the needs. When short-circuited, the device outputs sine waves and square waves. When disconnected, the device outputs triangle waves and square waves.

[0039] Step S6: Select the appropriate signal frequency range according to the requirements. The frequency range of short-circuit jumper cap ③ is 1 to 10 Hz, the frequency range of short-circuit jumper cap ④ is 10 to 100 Hz, the frequency range of short-circuit jumper cap ⑤ is 100 to 3 kHz, the frequency range of short-circuit jumper cap ⑥ is 3k to 65 kHz, and the frequency range of short-circuit jumper cap ⑦ is 65k to 1 MHz;

[0040] Step S7: increasing the driving capability of the output signal through the bus transceiver⑧;

[0041] Step S8: amplifying the signal amplitude through the signal amplification module ⑨ and outputting a driving signal that meets the requirements;

[0042] Step S9: Connect the adjustable signal generating board to the aging test board, apply a driving signal to the aging test board, and perform an aging screening test.

[0043] The present invention is easy to use and operate, has a clear logic structure, and a stable driving signal, and solves the problem that the signal source has a weak carrying capacity and the amplitude range cannot meet the demand. The operation is simple and the resource utilization rate is improved.

[0044] The present invention realizes a multi-channel adjustable signal output function, and can output sine waves, square waves and triangle waves with adjustable amplitudes and frequencies; on the basis of covering the existing signal source functions, the signal amplitude is increased from 10V to 35V, and the output signal ports of a single device are increased from 2 to 12, thereby reducing the size of the device, reducing the usage of the device, and improving resource utilization and aging power-up efficiency.

[0045] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An adjustable generation device for an aging signal, characterized in that: include: Voltage conversion module, signal generation module, signal amplification module; wherein: The voltage conversion module provides power to each module in the adjustable signal generating device. The signal generation module uses a single-chip function generator integrated circuit to generate high-quality sine waves, square waves and triangle waves with high stability and high precision; the output waveform is amplitude and frequency modulated by an external voltage; The signal amplification module uses an N-channel enhancement field effect transistor and utilizes its negative resistance characteristic to generate a relatively large output voltage after a positive voltage is added to the input terminal.

2. The adjustable generation device of the aging signal according to claim 1, characterized in that: The adjustable generating device also includes a bus transceiver to increase the driving capability, and the number of output signals increases from 1 to 6.

3. The adjustable generation device of the aging signal as claimed in claim 2, characterized in that: The voltage conversion module uses a voltage conversion chip. In order to take into account the 35V voltage required by the MOS tube, a 2*10 double-row pin is selected to facilitate the connection of an external power supply device to power the field effect transistor; a CJ7809 voltage conversion chip with a maximum current of 1.5A and an adjustable voltage range of 8.55-9.45V is selected as the first power output to meet the driving voltage and current required by the signal generating chip; an L7805CV chip with a maximum current of 1.2A and an adjustable voltage range of 5-18V is selected as the second power output to provide the required driving voltage for the 16-bit dual-power bus transceiver.

4. A method based on the adjustable generation device of the aging signal according to any one of claims 1 to 3, characterized in that: The steps include: Step S1: designing a PCB board, wherein the PCB board includes a voltage conversion module, a signal generation module, and a signal amplification module; Step S2: Providing corresponding power to the PCB board through an external voltage source; Step S3: the voltage conversion module converts the external voltage and outputs the voltage required by each module; Step S4: after receiving the required voltage, the signal generating module outputs an initial signal; Step S5: Select whether the jumper cap is short-circuited according to the requirements. When the jumper cap is short-circuited, the device outputs sine waves and square waves. When the jumper cap is disconnected, the device outputs triangular waves and square waves. Step S6: Select a suitable signal frequency range according to requirements; Step S7: increasing the driving capability of the output signal through the bus transceiver; Step S8: amplifying the signal amplitude through the signal amplification module and outputting a driving signal that meets the requirements; Step S9: Connect the adjustable signal generating board to the aging test board, apply a driving signal to the aging test board, and perform an aging screening test.

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