FPGA POWER SUPPLY CONTROLLERS
MODEL BASED DESIGN BASED ON MATLAB, SIMULINK AND DSP BUILDER
New FPGA technologies and schematic driven software tools enable the design of complex digital controllers for power supplies
FPGAs are a great platform for power supply controllers. Fast and efficient power conversion is the ultimate real time embedded control application. The energy circulating in the power processing circuit cannot wait and multiple signals have to be processed simultaneously without delay. Optimizing quality and efficiency of high bandwidth power delivery may require processing capabilities beyond the capabilities of even a large DSP. Programmable logic with its inherent massive parallel processing capabilities makes algorithm implementation easy.
Matlab, Simulink and DSP Builder allow one to deploy Model Based Design methodology to the area of power supply control. In this method the designer starts by converting specification to a high level Simulink model and then progresses towards more and more hardware specific simulations in small incremental steps. At the end, the simulation model is converted automatically into programming files which are guaranteed to work precisely like the simulation. The link between the model and the the actual design is never severed. Each task and challenge can/should be reflected in the simulation model and correlated with the hardware tests.