报告摘要：In the field of power electronics, it is often perceived that for a given product there exists a specific converter topology and design that is deemed best fit. Therefore, new products are developed with garden-variety of topologies and design practices. This practice is deemed as an important factor for competitive advantage. With this mindset, products are highly customized and lack of modularity and more integrated solutions. Most power electronic equipment, with few exceptions, were designed and built based on discrete active and passive components. The power electronics products have reached a point of maturity that any advance of one performance attribute, is often at the expense of others. In addition, the manufacturing practices are labor intensive and remains largely unchanged for decades.
The new generation of wide-band-gap power semiconductor devices, such as SiC and GaN, offer significant reduction of both conduction and switching losses when compared with their silicon counterparts. The current design practice with WBG devices is largely, based on the “plug-in and play” concept, except with an 2-3X increase in switching frequency. The improvements in efficiency and power density are incremental. This practice fails to realize its true potential for a possible paradigm shift in the design and manufacturing process.
Recently, It has been demonstrated that a 10-20X increase in switching frequency can be realized with ZVS to further eliminate the turn- on loss. With that, it is possible to contemplate a fundamental change in design and manufacturing practices with heterogeneous integration on a PCB based platform. Concurrent improvements in all performance attributes can be realized, including efficiency, power density, cost, and EMI. Furthermore, the high labor content of the manufacturing process for magnetics and system assembling process can be removed with automation.
The proposed heterogeneous integration process is not without its limits. This presentation will address the benefits and limitations as well as the applicable power range.
( 2022年8月15日 )
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