Always-Dual-Path Hybrid DC-DC Converter Achieving High Efficiency at Around 2:1 Step-Down Ratio

An always-dual-path hybrid (ADPH) DC-DC converter using one inductor and two flying capacitors with the step-down ratio from 3:1 to 1:1 is proposed to achieve high efficiency at the commonly used 2:1 step-down ratio by reducing the inductor current. The proposed ADPH converter is designed for a 24 V...

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Bibliographic Details
Main Authors: Hata, Katsuhiro, Jiang, Yang, Law, Man-Kay, Takamiya, Makoto
Format: Conference Proceeding
Language:English
Subjects:
Always-dual-path
Capacitors
Conferences
Current measurement
DC-DC converter
Equivalent series resistance (ESR)
Hybrid converter
Loss measurement
Power electronics
Power measurement
Resistance
Step-down converter
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Summary:An always-dual-path hybrid (ADPH) DC-DC converter using one inductor and two flying capacitors with the step-down ratio from 3:1 to 1:1 is proposed to achieve high efficiency at the commonly used 2:1 step-down ratio by reducing the inductor current. The proposed ADPH converter is designed for a 24 V-to-13 V bus converter for truck auxiliary equipment. In the measurement, the peak efficiency of the proposed 24 V-to-13 V converter is 97.4 % at 146 W, and the inductor conduction loss is reduced by 67.2 % by reducing the inductor DC current by 42.7 %.
ISSN:2470-6647
DOI:10.1109/APEC42165.2021.9487174