Designing High-Power Arrays Using DC-DC Converters

This technical report outlines the design considerations for high-power arrays utilizing Vicor's Maxi, Mini, and Micro DC-DC converters. It describes the unique paralleling interface that allows for the implementation of multi-kW capable designs with minimal external components. The document details the PR bus architecture, emphasizing the importance of defining parent and child configurations to enhance redundancy while managing complexity. It explains the necessity of distributing converters across multiple boards and the use of isolation transformers to maintain signal integrity. The report also discusses buffering techniques required for high-speed communication between modules, highlighting the impact of lead lengths on signal fidelity. Additionally, it covers bypassing strategies for stability and EMI performance, and provides an example of a 5kW, 1,000 Amp prototype array, detailing its configuration and testing procedures. The report emphasizes the critical nature of thorough testing during the prototyping phase to ensure optimal performance and reliability of the high-power array system.