A thumb-near-sized gold-oxygen half-field effect transistor (MOSFET), which weighs only a few grams, can carry more than 700 volts, and has an on-resistance of only 30 milliohms, enabling efficient and low-power conversion of electricity for charging. Rapid charging of the pile provides key technical support. Yesterday, Suzhou Dongwei Semiconductor Co., Ltd. held a product launch conference and announced that its self-developed charging piles were successfully mass-produced with high-voltage high-speed gold-oxygen half-field transistors (MOSFET-GreenMOS). At present, the monthly shipment of products reaches 10 million, which has been exported to South Korea, Japan and Germany, breaking the long-term monopoly of foreign manufacturers.
According to Gong Hao, general manager of Suzhou Dongwei Semiconductor Co., Ltd., the gold-oxygen half-field effect transistors used by domestic charging pile enterprises are mainly monopolized by international giants such as Infineon, Toshiba, Fuji, and Fairchild. With the rapid development of the charging pile industry, manufacturers have purchased a large number of imported brand products, and the market was out of stock for a time, and the price rose sharply.
After two years of independent research and development, Dongwei Semiconductor has obtained a patent of a new generation of high-voltage super junction technology, which improves the power conversion efficiency of the gold-oxygen half-field effect transistor, and has the advantages of low dynamic loss and low heat generation, ensuring stable operation of the charging pile. heat. Through the client's actual measurement, its gate charge and parasitic capacitance are much better than those of foreign products of the same specification. The overall performance surpasses the foreign brand products and has reached the international first-class level.
According to reports, Dongwei Semiconductor's products have not only been successfully applied to charging piles, but also widely used in various high-end power systems, such as mobile phones, televisions, industrial power supplies, and solar inverters. This year, Dongwei Semiconductor will also enter the core driver device field of new energy vehicles. Its new generation products are based on semi-floating gate device technology, achieving high performance and low cost manufacturing. At present, small batch testing has begun.
It is understood that Dongwei Semiconductor's original semi-floating device technology paper was published in the US "Science" magazine, marking the domestic scientists in the semiconductor core technology direction to achieve a major breakthrough. At present, the company has more than 40 invention patents and a number of international original core device technologies with independent intellectual property rights.
This technology has not only been successfully applied to charging piles, but also widely used in various high-end power systems, such as mobile phones, televisions, industrial power supplies, and solar inverters. It is reported that this year, East Micro Semiconductor will also enter the core drive device field of new energy vehicles.
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