ROHM Expands Its Full SiC Power Module Lineup ---New 1200V/300A model ideal for high power applications

Kyoto and Santa Clara, Calif., -- November 30, 2015 -- ROHM has recently announced the development of a 1200V/300A full SiC power module designed for inverters and converters in solar power conditioners and industrial equipment.

The 300A rated current makes the BSM300D12P2E001 suitable for high power applications such as large-capacity power supplies for industrial equipment. In addition, 77% lower switching loss vs. conventional IGBT modules enables high-frequency operation, contributing to smaller cooling countermeasures and peripheral components.

In March 2012, ROHM began mass production of the world’s first full SiC power module with an integrated power semiconductor element composed entirely of silicon carbide, and its 120A and 180A/1200V products continue to see increased adoption in the industrial and power sectors. And although further increases in current are expected due to energy-saving effects, in order to take advantage of the high-speed switching capability of SiC products an entirely new package design was needed that can minimize the effects of surge voltage during switching which can become particularly problematic at higher currents.

In response, the BSM300D12P2E001 features an optimized the chip layout and module construction that significantly reduces internal inductance, suppressing surge voltage while enabling support for higher current operation up to 300A. And going forward ROHM will continue to strengthen its lineups by developing products compatible with larger currents that incorporate SiC devices utilizing high voltage modules and trench structures.

Key Features

1. Reduced switching loss through higher frequency operation

Replacing IGBT modules is expected to reduce switching loss by up to 77%, enabling smaller cooling systems to be used. And higher frequency switching will make it possible to decrease the size of peripheral components such as the coil and capacitors as well, improving efficiency while contributing to greater end-product miniaturization.

2. Lower inductance improves current-handling capability

Increasing the rated current for power modules involves reducing the internal inductance to counter the higher surge voltages generated during switching. The BSM300D12P2E001 features an all-SiC construction and optimized circuit layout that cuts internal inductance by half, making it possible to increase the rated current to 300A.

Device Configuration

・Full SiC module integrates an SiC SBD and SiC-MOSFET into a single package
・Equivalent package size as standard IGBT modules
・Built-in thermistor
・Tjmax=175°C

SiC Power Module Lineup

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Terminology
・Inductance
The amount of electromotive force generated due to electromagnetic induction when changing the 　current flow. 

・Thermistor
A type of resistive element that exhibits large changes in electrical resistance in response to changes in temperature. Often used as sensors for measuring temperature. 

・IGBT (Isolated Gate Bipolar Transistor)
A bipolar transistor that incorporates a MOSFET at the gate. 

・MOSFET (Metal Oxide Semiconductor Field Effect Transistor)
This type of structure is most often used in FETs. Frequently adopted as switching elements. 

・SBD (Schottky Barrier Diode)
A diode that provides rectification (diode) characteristics by adopting a Schottky barrier formed through a metal-semiconductor junction. No minority carrier effect results in superior high-speed performance.