DC/DC converter 3D assembly for autonomous sensor nodes

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Hilt, Thierry
Boutry, Herve
Franiatte, Remi
Rothan, Frederic
Sillon, Nicolas
Stam, Frank
Mathewson, Alan
Wang, Ningning
Ó Mathúna, S. Cian
Rodgers, Kenneth
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This paper reports on the design and the manufacturing of an integrated DCDC converter, which respects the specificity of sensor node network: compactness, high efficiency in acquisition and transmission modes, and compatibility with miniature Lithium batteries. A novel integrated circuit (ASIC) has been designed and manufactured to provide regulated Voltage to the sensor node from miniaturized, thin film Lithium batteries. Then, a 3D integration technique has been used to integrate this ASIC in a 3 layers stack with high efficiency passives components, mixing the wafer level technologies from two different research institutions. Electrical results have demonstrated the feasibility of this integrated system and experiments have shown significant improvements in the case of oscillations in regulated voltage. However, stability of this output voltage toward the input voltage has still to be improved.
Application specific integrated circuits , Integrated circuit manufacture
Hilt, Thierry; Boutry, Herve; Franiatte, Remi; Rothan, Frederic; Sillon, Nicolas; Stam, Frank; Mathewson, Alan; Wang, Ningning; O'Mathuna, Cian; Rodgers, Kenneth; (2010) DC/DC converter 3D assembly for autonomous sensor nodes. In: Electronic Components and Technology Conference (ECTC), 2010 Proceedings 60th. Las Vegas, USA, 01-04 Jun 2010. IEEE
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