Based on the technology of EDA(Electronic Design Automatic),compplied with the standard of IP design ,the core for the teiggering thyristor eircuit of three-phases is proposed ,and simulated with EDA software and verified by CPLD(Complex Programmable logic davices).The circuit implemented by IP core can be applied to trigger the thvristor of three phases rectifiler and inverses system.The precision of the phase shift can work with the frequence of 50Hz or 60Hz.,
Key Words: thyristor/intellectua complex progammable logic dacices