Electronic Design Automation Research And Engineering

A method based on the software OrCAD10.5 of EDA technology is proposed in this paper to simulate the SMPL (Switching Mode Power Supply) after searching the native and international development of the ED A technology. Applying this method to the project of Digital Intelligent Charging System, this paper set up a simulation model of the main circuit in the system, and optimized the performance of the actual circuit via many kinds of analyses.First of all, the principle and trait of PSpice which is the core of the simulation software, used in the circuit simulation is introduced. A new simulation method which is model-module-system stepping up is proposed based on applying the PSpice to the digital intelligent charging system. Secondly, the method of model setting up of the key device which include power supply management chip TDA16888, transformer, inductance, is emphasis discussed. The model setting up method of the three module which include power factor correction circuit, two-transistor forward converter, secondly chopper circuit, is discussed in detail. At last the whole system simulation model is found, and the method of optimizing the performance of the system is proposed by optimizing the performance of the proportional-integral circuit using the simulation software. Tolerance analysis is applied to the system in order to reduce the cost of the products based on the success rate of the production is ensured.After the comparing with the result of the calculation and the wave form of the real circuit, the simulation model of the system is proved to be veridical and reliable. The conclusion of optimizing can be used in the real circuit directly, and the effect of optimizing is obvious.