Title :
Copper-based hybrid fabrication of a 50 W, 5 MHz 40 V-5 V DC/DC converter
Author :
Miwa, Brett A. ; Casey, Leo F. ; Schlecht, Martin F.
Author_Institution :
Lab. for Electromagn. & Electron. Syst., MIT, Cambridge, MA, USA
Abstract :
A prototype 50 W, 40 V to 5 V DC/DC converter is presented that operates at 5 MHz and was constructed using chip an wire hybrid techniques on a ceramic substrate with copper-based thick film conductors. The use of copper thick film and the design of very-low-inductance transformers and interconnects are also discussed. Direct connection of a flexible-insulator transformer winding directly to a rectifier die and a surface mount capacitor made it possible to achieve a net 2 nH of leakage inductance
Keywords :
hybrid integrated circuits; power convertors; thick film devices; 40 V; 5 MHz; 5 V; 50 W; Cu thick film; DC/DC converter; flexible-insulator transformer winding; hybrid fabrication; Ceramics; Conductive films; Copper; DC-DC power converters; Fabrication; Prototypes; Substrates; Thick films; Transformers; Wire;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1989. APEC' 89. Conference Proceedings 1989., Fourth Annual IEEE
Conference_Location :
Baltimore, MD
DOI :
10.1109/APEC.1989.36978
