Abstract
This paper presents an inductor-first hybrid step-up/down DC-DC converter for one-and two-cell battery chargers. The proposed architecture can improve efficiency by lowering inductor current as well as less charge sharing loss of the flying capacitor. The battery can be isolated from the input without using extra reverse blocking device which is necessary for the charger application. The design also can replace the discrete inductor with the USB cable inductance and avoid heat loss from the mobile device. The proposed converter has been implemented in a 180nm BCDMOS process. The peak efficiency is 96.9% at 5V input for one-cell, and 97.2% at 9V input for two-cell battery. The measured maximum output power is 19.8W and 29.6W for one-cell and two-cell battery applications, respectively. The onboard peak efficiency is 96% employing the USB cable.
| Original language | English |
|---|---|
| Title of host publication | 2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9784863488069 |
| DOIs | |
| State | Published - 2023 |
| Event | 2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023 - Kyoto, Japan Duration: 11 Jun 2023 → 16 Jun 2023 |
Publication series
| Name | Digest of Technical Papers - Symposium on VLSI Technology |
|---|---|
| Volume | 2023-June |
| ISSN (Print) | 0743-1562 |
Conference
| Conference | 2023 IEEE Symposium on VLSI Technology and Circuits, VLSI Technology and Circuits 2023 |
|---|---|
| Country/Territory | Japan |
| City | Kyoto |
| Period | 11/06/23 → 16/06/23 |
Bibliographical note
Publisher Copyright:© 2023 JSAP.
Fingerprint
Dive into the research topics of 'A 19.8W/29.6W Hybrid Step-Up/Down DC-DC Converter with 97.2% Peak Efficiency for 1-Cell/2-Cell Battery Charger Applications'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver