Development and Qualification of High Temperature DC-DC Converter

This white paper discusses the development and qualification of a DC-DC converter designed for operation at extreme temperatures of 225°C (437°F), targeting applications in the Oil & Gas, Automotive, and Aerospace sectors. The paper outlines the challenges faced by conventional electronic packaging technologies in high-temperature environments, particularly in deep well drilling applications. It details the use of Cissoid’s ‘ETNA’ semiconductor components and describes the rigorous testing and evaluation processes employed to ensure reliability and performance. The document presents the materials and technologies utilized, including hermetically sealed cavity housings and multilayer ceramic thick film substrates. It explains the environmental testing conducted under controlled conditions, focusing on endurance, mechanical stress, and thermal cycling tests to validate the integrity of the components. Acceptance criteria for the evaluation are also specified, ensuring compliance with established standards. The findings contribute to advancing high-temperature electronic solutions for critical applications.