A 12-48 V Wide-Vin 9-15 MHz Soft-Switching Controlled Resonant DCDC Converter
- authored by
- Juergen Wittmann, Tobias Funk, Thoralf Rosahl, Bernhard Wicht
- Abstract
The presented wide-Vin step-down converter introduces a parallel-resonant converter (PRC), comprising an integrated 5-bit capacitor array and a 300nH resonant coil, placed in parallel to a conventional buck converter. Unlike conventional resonant concepts, the implemented soft-switching control eliminates input voltage dependent losses over a wide operating range. This ensures high efficiency across a wide range of Vin= 12-48V, 100-500 mA load and 5V output at up to 15MHz switching frequency. The peak efficiency of the converter is 76.3 %. Thanks to the low output current ripple, the output capacitor can be as small as 50nF, while the inductor tolerates a larger ESR, resulting in small component size. The proposed PRC architecture is also suitable for future power electronics applications using fast-switching GaN devices.
- Organisation(s)
-
Mixed-Signal Circuits Section
- External Organisation(s)
-
Reutlingen University
Robert Bosch GmbH
- Type
- Conference contribution
- Pages
- 348-351
- No. of pages
- 4
- Publication date
- 2017
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Instrumentation, Hardware and Architecture, Electrical and Electronic Engineering, Computer Networks and Communications
- Electronic version(s)
-
https://doi.org/10.1109/ESSCIRC.2017.8094597 (Access:
Closed)
