JAJU802A January 2022 – October 2022
The TI SFRA library is designed to enable frequency response analysis on digitally-controlled power converters using software alone. This feature enables performing frequency response analysis of the power converter with relative ease as no external connections or equipment is required. The optimized library can be used in high-frequency power conversion applications to identify the plant and the open loop characteristics of a closed-loop power converter, which can be used to get stability information such as bandwidth, gain margin, and phase margin to evaluate the control loop performance. For more information, see the C2000™ SFRA Library and Compensation Designer User's Guide.
In addition to SFRA, this PFC design supports the use of another powerSUITE tool called the Compensation Designer. The Compensation Designer tool allows the PFC design of different styles of compensator to achieve the desired closed loop performance, which can be done using the measured power stage or plant data from the SFRA Tool. The coefficients that must be programmed on the device are generated by the Compensation Designer and can be copied into the code directly. These tools help users evaluate the complete system, adapt it for their end application, and tune it for improved performance.