ROHM's industry-first AC/DC converter ICs offer built-in 1700V SiC MOSFET

ROHM is introducing a new, AC/DC converter ICs with a built-in 1700V SiC MOSFET, BM2SC12xFP2-LBZ in the TO 263-7L package. It’s optimized for industrial applications, focusing on auxiliary power supplies for street lamps, commercial air-conditioning systems, general-purpose inverters, and AC servos drives.

An auxiliary power supply is an essential and vital part of industrial applications to deliver different levels of DC voltages for gate drivers and control units.

By applying existing Si MOSFET devices, a designer is unable to achieve higher efficiency and increased output power because of the higher losses of Si devices. The existing solutions require a heatsink and additional components, which increase the losses of the devices and the size of the system.

Designing an auxiliary power supply with existing Si devices is also costly because of a larger bill of material (BOM).

ROHM’s BM2SC12xFP2-LBZ power ICs are the Quasi-resonant (QR), AC/DC converters with an integrated 1700V SiC MOSFET in a single compact surface-mount package (TO263). These ICs are an ideal fit for industrial auxiliary power-supply solutions in terms of efficiency, shortening design time, simplifying the circuitry, and reducing additional components by offering integrated solutions.

These ICs also increase 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 improves power efficiency by up to five percent and minimizes 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 its AC/DC BM2SC123FP2-LBZ IC is available to support designers. This board delivers power up to 48W at 400VAC without any heatsink. The test result of the evaluation board shows the output voltage (24V) is constant and independent from input voltage.

ROHM is committed to continuing to develop advanced analog control ICs and power semiconductors, such as SiC devices, while providing optimized solutions that contribute to greater energy savings and performance in industrial equipment.

Features
The BM2SC12xFP2-LBZ incorporates a 1700V SiC MOSFET, along with control circuitry optimized for auxiliary power supplies in industrial equipment (i.e. SiC MOSFET gate drive circuit).

It’s offered in a unique package developed specifically for the internal SiC MOSFET.

This series offers numerous advantages by providing the following features:

The industry’s first 48W class surface-mount package significantly reduces factory mounting costs
Achieves breakthrough miniaturization by replacing 12 components and heat sink with a single product
Reduces man-hours and risk while multiple built-in protection functions provide superior reliability
Maximizes SiC MOSFET performance to achieve dramatically improved power savings

Learn more here.