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STMicroelectronics reveals flexible isolated-buck IC for protected power conversion and gate driving in IGBTs, SiC, and GaN transistors

2023/05/12STMicroelectronics  Analog

Geneva, May 12, 2023 - The STMicroelectronics L6983i 10W isolated buck

(iso-buck) converter ensures high efficiency and a compact footprint, with advantages including low quiescent current and 3.5V-38V input-voltage range.

The L6983i is suitable for applications that require an isolated DC-DC converter. It implements an iso-buck topology, which uses fewer components than a conventional isolated flyback converter and requires no optocoupler, saving bill-of-materials costs and PCB space.

Further benefits of the L6983i include 2μA shutdown current and integrated functions such as adjustable soft-start time, internal loop compensation and power good indicator, as well as protection from overcurrent and thermal shutdown. The selectable spread-spectrum feature improves EMC performance.

Capable of sourcing/sinking up to 4.5A primary current, the L6983i allows the switching frequency to be adjusted from 200kHz to 1MHz and to be also externally synchronized. It can be used to power isolated gate drivers for IGBTs and silicon-carbide (SiC) or gallium-nitride
(GaN) transistors, industrial automation, small traction systems and charging stations, and isolated safety equipment.

The evaluation board, STEVAL-L6983IV1, helps designers explore the features of the L6983i quickly and accelerate the time to market for new projects.

The L6983i is in production now, in a 3mm x 3mm QFN16 package, and is available from $1.38 for orders of 1000 pieces.


About STMicroelectronics
At ST, we are more than 50,000 creators and makers of semiconductor technologies mastering the semiconductor supply chain with state-of-the-art manufacturing facilities. An integrated device manufacturer, we work with more than 200,000 customers and thousands of partners to design and build products, solutions, and ecosystems that address their challenges and opportunities, and the need to support a more sustainable world. Our technologies enable smarter mobility, more efficient power and energy management, and the wide-scale deployment of the Internet of Things and connectivity. ST is committed to becoming carbon neutral by 2027. Further information can be found at https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.st.com%2F&data=05%7C01%7Casawada%40chip1stop.com%7C108d83542b8348dd4b8108db527bda31%7C5e2e624057384ec8802f18b4bfb344a1%7C1%7C0%7C638194464119189031%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=AhLoB%2B16idWbii4OZJGSvYEddZKH3qP6BI1gzHEDG8g%3D&reserved=0.


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