CN215575429U

CN215575429U - ESD protection adjustment test system

Info

Publication number: CN215575429U
Application number: CN202121960846.1U
Authority: CN
Inventors: 蒋剑波
Original assignee: Shenzhen Honestar Electronic Co ltd
Current assignee: Shenzhen Honestar Electronic Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-18
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses an ESD protection adjustment test system, which comprises an electrostatic test area, an ESD protection module, a target device, a detection and feedback unit and a display unit, wherein the ESD protection module is used for detecting the electrostatic test area; one end of the static test area is connected with a conduction circuit connected with one end of the ESD protection module; one end of the ESD protection module is connected with a conduction circuit connected with one end of the target device, one end of the ESD protection module is grounded, and the ESD protection module comprises an ESD device; the target device is connected with the adjustable voltage power supply unit through the power supply circuit and is connected with the detection and feedback unit through the communication line, and one end of the target device is grounded; the detection and feedback unit is connected with the display unit through a communication line; the display unit and the detection and feedback unit are connected to the same fixed voltage power supply unit through the power supply circuit. The method and the device can enable workers to more visually see the ESD test effect, improve the accuracy of ESD protection design, and improve the system calibration test speed.

Description

ESD protection adjustment test system

Technical Field

The utility model relates to the technical field of intelligent electronic equipment, in particular to an ESD protection adjustment test system.

Background

Electrostatic Discharge (ESD) is a static current instantaneously discharged through a non-conductive surface, and the ESD causes damage and performance degradation of electronic components in a circuit, so that protection against the ESD is more and more important.

ESD static is a problem in chip packaging, testing, soldering and chip system module operation, and an ESD protection circuit must be used to protect the internal circuit of the chip from being damaged by the impact of ESD static discharge charges.

When the existing intelligent electronic equipment containing human-computer interaction faces the problem of human body static electricity, an intuitive and effective solution is difficult to achieve, an ESD protection design can be carried out only by depending on feeling and experience, the adjustment and calibration test process is slow and complicated, the test effect cannot be intuitively observed, and a test component cannot be conveniently replaced.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present invention provides an ESD protection calibration test system with intuitive effect, fast debugging speed and easy replacement.

In order to realize the technical purpose, the scheme of the utility model is as follows: an ESD protection adjustment and test system comprises an electrostatic test area, an ESD protection module, a target device, a detection and feedback unit and a display unit;

one end of the static test area is connected with a conduction circuit connected with one end of the ESD protection module;

one end of the ESD protection module is connected with a conduction circuit connected with one end of a target device, one end of the ESD protection module is grounded, and the ESD protection module comprises an ESD device;

the target device is connected with the adjustable voltage power supply unit through the power supply circuit and is connected with the detection and feedback unit through the communication line, and one end of the target device is grounded;

the detection and feedback unit is connected with the display unit through a communication line; the display unit and the detection and feedback unit are both connected to the same fixed voltage power supply unit through a power supply circuit.

Preferably, the voltage range of the adjustable voltage power supply unit is 1.8V-5V.

Preferably, the target device comprises an MCU, a peripheral circuit and working firmware, and a communication line between the target device and the detection and feedback unit comprises IIC and GPIO.

Preferably, the detection and feedback unit comprises an MCU and a detection circuit, and a communication line between the detection and feedback unit and the display unit is IIC or SPI protocol.

Preferably, the fixed voltage of the fixed voltage power supply unit is 3.3V.

The utility model has the advantages that (1) through the display unit and the detection and feedback unit, when the system is used for debugging, the display unit is matched with the detection and feedback unit, so that a worker can more visually see the effect of the ESD test, the precision of the ESD protection design is improved, and the system adjustment and test speed is improved.

(2) Through the target device, when the system is used for debugging, the target device arranged in the system can be replaced, so that the target device does not need to be welded, a test component is convenient to replace, and more direct and effective ESD protection adjustment and test are carried out.

(3) Through the adjustable power supply, when the system is used for debugging, the adjustable power supply is convenient for enabling the voltage of the target device to be adjustable, so that the system can be set according to customer requirements, the operability of the system is improved, and the test range of the system is enlarged.

Drawings

FIG. 1 is a schematic diagram of the operation of the present design;

FIG. 2 is a circuit diagram of the adjustable power supply of the present design;

FIG. 3 is a circuit diagram of an ESD device of the present design;

FIG. 4 is a circuit diagram of the target device of the present design;

FIG. 5 is a circuit diagram of the present design for a fixed power supply;

FIG. 6 is a circuit diagram of a detection and display unit according to the present design;

FIG. 7 is a circuit diagram of the present design.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific embodiments.

As shown in fig. 1-7, an embodiment of the utility model is an ESD protection calibration test system, which includes an electrostatic test area, an ESD protection module, a target device, a detection and feedback unit, and a display unit;

one end of the static test area is connected with a conduction circuit connected with one end of the ESD protection module and connected in a PCB wiring mode;

one end of the ESD protection module is connected with a conduction circuit connected with one end of the target device, one end of the ESD protection module is grounded, the ESD protection module comprises an ESD device, and the ESD device can be replaced to adapt to different parameters;

the detection and feedback unit is connected with the display unit through a communication line; the display unit and the detection and feedback unit are connected to the same fixed voltage power supply unit through the power supply circuit.

The voltage range of the adjustable voltage power supply unit is 1.8V-5V.

The target device comprises an MCU, a peripheral circuit and working firmware, and a communication line between the target device and the detection and feedback unit comprises IIC and GPIO.

The detection and feedback unit comprises an MCU and a detection circuit, and a communication line between the detection and feedback unit and the display unit is IIC or SPI protocol.

The fixed voltage of the fixed voltage power supply unit is 3.3V.

This design provides an ESD protection timing test system, and when using this system, the staff can link together target device through wire and ESD protection module, adjustable power, makes target device and detection and feedback unit link together simultaneously, and then when formal test, the display element cooperation is listened and the feedback unit can make the staff more directly perceived see the ESD.

The working principle is as follows: 1. adjusting the adjustable power supply voltage to a target device working voltage, such as 3.3V;

2. burning a firmware containing a specified communication function into an MCU in a target device, and putting the MCU into a module;

3. selecting an ESD device with parameters within a theoretical range, and putting the ESD device into an ESD protection circuit module;

4. adjusting the static gun to the minimum requirement, and aligning the static gun to a static testing area for discharge testing;

5. the detection unit communicates with the target device in real time, if the communication is wrong, the display fails, the step 2 is returned, the communication is successful, the display is successful, the step 4 is returned, and the parameters are increased;

6. finally, the required static standard is achieved, the most suitable model is selected, and the design of the terminal product is carried out.

When the system is used for debugging, the display unit is matched with the detection and feedback unit, so that a worker can more visually see the effect of ESD test, the accuracy of ESD protection design is improved, the system calibration and test speed is improved, and meanwhile, a target device arranged in the system can be replaced, so that the target device does not need to be welded, a test component is conveniently replaced, and more direct and effective ESD protection calibration and test are carried out; the adjustable power supply is convenient for making the voltage of target device adjustable for this system can set for according to customer's demand, has improved this system's maneuverability, enlarges the test range of system.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. An ESD protection adjustment test system is characterized in that: the ESD protection circuit comprises an electrostatic test area, an ESD protection module, a target device, a detection and feedback unit and a display unit;

2. The ESD protection tuning test system of claim 1, wherein: the voltage range of the adjustable voltage power supply unit is 1.8V-5V.

3. The ESD protection tuning test system of claim 1, wherein: the target device comprises an MCU, a peripheral circuit and working firmware, and a communication line between the target device and the detection and feedback unit comprises IIC and GPIO.

4. The ESD protection tuning test system of claim 1, wherein: the detection and feedback unit comprises an MCU and a detection circuit, and a communication line between the detection and feedback unit and the display unit is IIC or SPI protocol.

5. The ESD protection tuning test system of claim 1, wherein: the fixed voltage of the fixed voltage power supply unit is 3.3V.