Name
Title | ||
|---|---|---|
A Monolithic GaN-IC With Integrated Control Loop for 400-V Offline Buck Operation Achieving 95.6% Peak Efficiency |
Abstract | ||
|---|---|---|
Gallium nitride (GaN) transistors enable efficient and compact high-voltage power converters. In the state-of-the-art enhancement mode GaN-on-Si technology, a 650-V power transistor is formed as a lateral structure enabling monolithic integration with a driver and analog control circuits on one die. Offline power converters show a trend toward a higher level of integration, shifting from monolithic silicon (CMOS) to various integration levels in GaN technology. In this article, a monolithic, self-biased GaN buck converter for offline operation is presented, supporting both 110- and 230-V ac line voltage and providing up to 29-W output power. The converter shows a superior efficiency of 95.6 % and a very high level of integration in a 650-V p-GaN gate e-mode GaN-on-Si technology. Analog design techniques for GaN integration, such as an auto-zero comparator and a high-voltage supply regulator, are discussed. Experimental results of stand-alone circuit blocks and the full buck converter confirm the viability of monolithic GaN integration as a path toward compact and efficient offline power converters. |
Year | DOI | Venue |
|---|---|---|
2020 | 10.1109/JSSC.2020.3018404 | IEEE Journal of Solid-State Circuits |
Keywords | DocType | Volume |
bootstrap circuit,charge pump,enhancement mode gallium nitride (e-mode GaN) transistors,GaN integration,gate loop,n-type only design,offline,power converters,self-biased operation | Journal | 55 |
Issue | ISSN | Citations |
12 | 0018-9200 | 1 |
PageRank | References | Authors |
0.41 | 5 | 2 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Maik Kaufmann | 1 | 2 | 1.52 |
| Bernhard Wicht | 2 | 19 | 9.30 |