Design And Development Of Digital Power Supply Controller Platform

Switching Power supply is a significant part of the power elcetronics. Digital control of Power has widely application prospect. The performance of the control system depends on the performance of MCU/DSP.Nowadays, they are used as the core in control modules of digital power electronic devices. In many application fields of high frequency, the speed of the controllers which are widely used at present can't meet the needs. FPGA has higher frequency and faster speed in comparison with MCU and DSP.These advantages conform to the need of power electronic control circuits developing in the direction of high frequency and complication increasingly.So this type of apparatus was developed and applied in more and more fields. In order to realized the digital control of the switch power supply, This platform can be connected with computer by UART, and used to complete monitoring,driver output,remote control and visualization. No change in hardware, it's flexible to alter parameters and control Switching Power supply. The main research work consists of adjustable sine modulation wave, rapid and stable triangle carrier, separation phase module, dead- time controlled and protection module, the simulation of SPWM system; sawtooth wave, amplifier, soft-starting module and PWM phase separation, protection module were designed and simulated; the design of PID and serial communication modules; furthermore, for the purpose of communication with computer, visualization interface was designed. All the modules designed in this paper have been make detailed description and simulated testing, complete the topic request and have better use value and application prospect.