This short course focuses on a novel family of software-defined power converters that aggregate atomic power electronic converter modules. These atomic modules are aggregated by a dedicated software stack. Special focus will be given to this software stack and how it can be leveraged for increasing flexibility and reprogrammability. This course will also present two examples of standardized atomic power hardware. From the analysis of these two examples, we will present the merits and challenges of software defined powerelectronics. As such, we will discuss reducing complexity, addressing electromagnetic compatibility (EMC), and component protection from the higher-level functional converter operation. The resulting converters are modular and reconfigurable with partial redundancy and self-healing properties.