Design of three-phase SPWM signal generation system based on soft-switch technology

A three-phase SPWM signal generation system based resonant DC link inverter (RDCLI) soft-switch is designed on the basis of our previous design work of three-phase SPWM signal generation system chip. The control method of RDCLI in soft-switch SPWM converter is given by researching the principle of resonant synchronous signal, which is the key theory for the design. According to the controlling method of RDCLI and the system structure of three phase SPWM signal generation system chip, the whole system structure based on soft-switch technology is designed. Each module and the system are stimulated functionally. Based on Chartered 0.35um technology synthesis library ASIC physical design is performed, the post simulation results show that the output signal has 10.788ns delay time than system clock edge as adding gates and wire delay, which meets the system timing requirements. The whole system specification reaches the design requirements, and the area of chip is 4.502mm².