1. Design and Implementation of a Highly Integrated Dual Active Bridge Microconverter.
- Author
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Kerachev, Lyubomir, Trinh, Trung Hieu, Lembeye, Yves, and Crebier, Jean-Christophe
- Subjects
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CASCADE converters , *LOW voltage systems , *ELECTRIC circuits , *CMOS integrated circuits , *LOGIC circuits , *POWER density - Abstract
This paper deals with the design and the implementation of an isolated and highly integrated low voltage, low power microconverter. A dual active-bridge topology is considered as a good candidate for reducing the number of passive elements. The design of a “power die” integrating power inverter legs and their driver circuits is carried out in order to benefit from the high level of integration and to reduce the amount of active components and the volume of the converter. Thus, a microconverter is built for 10 W power supply (5 V/2 A) and is operating at 1 MHz switching frequency. The measured efficiency of the converter is 88% for 6.5 W transferred power and 86% for 8.5 W transferred power without taking into account its control unit. The converter is operating in natural convection, and no cooling system is implemented. Therefore, a power density of 9.9 kW/L is achieved, which is beyond the state of the art of the conventional isolated converters whose power densities are around 1–2 kW/L at the same power level. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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