The bidirectional switch is extensively applied in the fields such as state-solid breakers and photovoltaic inverters, and increasing attention is paid to the bidirectional switch of SiC power modules owing to its low power loss and high switching frequency. However, due to the traditional packaging methods for Si power modules, the bidirectional switch of the SiC power module is challenged by the issue of high switching speed. Aimed at the low-inductance packaging requirement, a chip-on-chip 3D packaging method is proposed for the bidirectional switch of the SiC power module. The circuit topology and geometric structure of the 3D packaging are given, and the communication loop and parasitic inductance of the 3D packaging are analyzed. In addition, the process was designed for the 3D packaging, and a prototype of the bidirectional switch of the SiC power module was fabricated. Experimental results of a double-pulse test verified the feasibility and effectiveness of the proposed 3D packaging for the bidirectional switch of the SiC power module.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |