AC/DC converter ICs with built-In 1700V SiC MOSFET

The BM2SC12xFP2-LBZ power ICs are Quasi-resonant (QR) AC/DC converters with an integrated 1700V SiC MOSFET in a single compact surface mount package (TO263). These ICs are intended for industrial auxiliary power supply solutions delivering greater efficiency, shorter design times, simplified circuitry and a reduction in additional components by offering an integrated solution - increasing product reliability by minimizing the risk of component failure.

When used in 400VAC 48W output auxiliary power supplies, besides enabling automatic board mounting that was not previously possible, the number of external parts can be significantly reduced compared with standard configurations – from 12 parts and heat sink to just one.

At the same time, adopting a SiC MOSFET has helped to improve power efficiency by up to 5% and reduced the risk of component failure. This makes it possible to dramatically increase reliability and energy savings in industrial equipment while significantly reducing mounting area and costs.

In addition, ROHM’s Evaluation board BM2SC123FP2-EVK-001 using the company's AC/DC BM2SC123FP2-LBZ IC is available to support designers. This board delivers power up to 48W at 400VAC without any heatsink and the test result of the evaluation board shows the output voltage (24V) is constant and independent from input voltage.