通用板卡芯片测试系统的设计与应用

Design and Application of General Purpose Board Chip Test System

设计了一种针对通用板卡上共13款芯片的测试系统。在设计过程中,为了节省成本和增强测试器件的灵活性,外部电源由程控直流电源提供,驱动板由自制电路板配合数据采集卡数字量通道代替,对板卡提供电源和各种控制信号,模拟功率由外部功率电阻构成,提供信号监测点,信号采集模块由2块8通道的信号采集盒构成,负责整个试验过程中全部监测信号的采集;上位机负责控制驱动板信号的切换以及监测信号的回读存储,同时对数据进行判读,以得到被测器件的完整状态。经过测试,该系统试验结果正常,被测各器件稳定可用,说明该测试系统功能完善可靠,满足了芯片数据手册的要求和实际工程的需要。

In the paper,the design of a test system for a total of 13 chips on general purpose boards is introduced.In the design process,in order to save the cost and enhance the flexibility of the test device,the external power supply is provided by the program-controlled DC power supply.The drive board is replaced by a self-made circuit board with a digital channel of the data acquisition card,the board is provided with power supply and various control signals,the analog power is composed of external power resistors,providing signal monitoring points,and the signal acquisition module is composed of two eight-channel signal acquisition boxes,which are responsible for the acquisition of all monitoring signals during the entire test process.The host computer is responsible for controlling the switching of the drive board signal and the readback storage of the monitoring signal,while interpreting the data to obtain the complete state of the device under test.After testing,the test system test results are normal,and the devices under test are stable and available.It shows that the test system is complete and reliable,which meets the requirements of the chip data sheet and the needs of the actual project.