Design of Soft-Switching Hybrid DC-DC Converter with 2-Phase Switched Capacitor and 0.8nH Inductor for Standard CMOS Process

Electronics

Deog-Kyoon Jeong¹  Minho Choi¹ 

[1] Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Korea;

关键词: dc-dc converter;    soft switching;    switched capacitor;    hybrid converter;    fully-integrated voltage regulator;   

DOI  :  10.3390/electronics9020372

来源: DOAJ

【 摘 要 】

A soft-switching hybrid DC-DC converter with a 2-phase switched capacitor is proposed for the implementation of a fully-integrated voltage regulator in a 65 nm standard CMOS process. The soft-switching operation is implemented to minimize power loss due to the parasitic capacitance of the flying capacitor. The 2-phase switched capacitor topology keeps the same resonance value for every soft-switching operation, resulting in minimizing the voltage imbalance of the flying capacitor. The proposed adaptive timing generator digitally calibrates the turn-on delay of switches to achieve a complete soft-switching operation. The simulation results show that the proposed soft-switching hybrid DC-DC converter with a 2-phase 2:1 switched capacitor improves the efficiency by 5.1% and achieves 79.5% peak efficiency at a maximum load current of 250 mA.

【 授权许可】

Unknown