A Fully Integrated Bidirectional 5-Level Isolated DC-DC Converter with 42.5% Efficiency and 170mW/mm 2 Transformer Power Density
Abstract
This work presents a bidirectional 5 kV -isolated DC-DC converter, fully-integrated in a 180 nm SOI CMOS process. The design uses a distributed multi-winding transformer to maximize utilization of the standard on-chip metal stackup. A 5-level hybrid full-bridge power stage allows fundamental and harmonic waveform shaping with current ballasting. The design achieves peak efficiency of 42.5% at over 550 mW, for system power density over$69 \text{mW} / \text{mm}^{2}$and transformer power density over$170 \text{mW} / \text{mm}^{2}$.
Fields of Study & Subjects
Advanced DC-DC Converters
Multilevel Inverters and Converters
Analog and Mixed-Signal Circuit Design
Publication details
- Journal / source
- Digest of technical papers/Digest of technical papers - IEEE International Solid-State Circuits Conference
- Pages
- 334–336
- Publication date
- 15 February 2026
- Language
- EN