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3.55-Watt Output Power LTPS TFT DCDC converter for actuators on Wearable devices on flexible Substrate

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PubDate: May 23, 2023

Teams: imec, Sense and Actuate Technologies, Leuven, 3001, Belgium;KU Leuven,;Meta Reality Labs

Writers: T.C. Huang, Kris Myny, Marc Ameys, Mauricio Velazquez Lopez, Nikolaos Papadopoulos

PDF: 3.55-Watt Output Power LTPS TFT DCDC converter for actuators on Wearable devices on flexible Substrate

Abstract

In this work, a high-power LTPS DCDC converter on flexible polyimide substrate is demonstrated. The diode-based boost- converter upconverts its output voltage to 9V from a 3.3V source and can reliably supply a load range of 100mA to 400mA. The efficiency of the design is reaching 54.9%. The design contains 400.000 25μm/4.5μm TFTs, resulting in a complete footprint of 10.02cm2. The DCDC converter is suitable for driving high-power actuators on flexible wearables devices. Moreover, this work reports 3.24 ampere current through the LTPS TFT in the DCDC converter resulting in sub-Ω ON-resistance.

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