SPRACR6 April 2020 TMS320F280023-Q1 , TMS320F280023C , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1 , TMS320F28384D , TMS320F28384D-Q1 , TMS320F28384S , TMS320F28384S-Q1 , TMS320F28386D , TMS320F28386D-Q1 , TMS320F28386S , TMS320F28386S-Q1 , TMS320F28388D , TMS320F28388S , TMS320F28P650DK , TMS320F28P659DK-Q1
Distributed power architecture (DPA) has been widely used in many complex systems that require multiple power and voltage levels. DPA approach allows modular power converter design and, hence, enables general economies of scale, allowing manufactures quickly implement power conversion solutions with a wide range of output power and output voltages. This white paper discusses the application of C2000 microcontrollers (MCUs) in implementing control of such DPA systems. The control approach discussed here essentially implements a very flexible distributed power control architecture (DPCA) using multiple C2000 MCUs, taking full advantage of its control optimized high speed C28x CPU, flexible control peripherals and a new communication module, called the fast serial interface (FSI). Such system level solution can be advantageous in applications like solar string inverters, off-board EV chargers and any other distributed DC/DC or AC/DC applications. First, this document provides an overview of C2000 MCU-based distributed control of such power conversion systems and then presents an example case study of DPCA using the solar string inverter application.