ROHM, with built-in 1700V SiC MOSFET
Development of a 'cotton-mount package' AC/DC converter IC
Replaces up to 12 products and 1 heatsink


Recently, the number of AC 400V industrial devices adopting SiC power semiconductors is increasing. Meanwhile, high-power industrial devices with higher power requirements incorporate auxiliary power supplies to supply voltage to the main power circuit and various control systems. These auxiliary power supplies still utilize low-voltage Si MOSFETs and high-loss IGBTs, posing a significant challenge to power reduction.

ROHM announced on the 17th that it has developed the "BM2SC12xFP2-LBZ" AC/DC converter IC with a built-in 1700V SiC MOSFET for industrial equipment such as general-purpose inverters, AC servos, industrial air conditioners, and streetlights that handle high power. The new product integrates the SiC MOSFET and auxiliary power control circuit into a TO263-7L surface-mount package, making it suitable for the development of low-power AC/DC converters.

The new product integrates up to 12 components and a single heatsink into an auxiliary power supply with an output of 400 V AC and 48 W, reducing the risk of component failure. Furthermore, SiC MOSFETs achieve up to 5% power efficiency. This allows for a significant reduction in the cost of installation in the process, providing a compact, highly reliable, low-power solution.

Sample shipments of the BM2SC12xFP2-LBZ product began in May 2021, priced at 1,500 yen (excluding tax) per unit. Mass production will begin in October at a monthly production capacity of 100,000 units. The evaluation board, "BM2SC123FP2-EVK-001," is also available online. Purchases starting from a single unit are available on online component distribution sites such as Chip One Stop and Core Step.