ROHM Semiconductor To Present A Range of Novelties at PCIM 2012


Key Products are SiC Diodes, MOSFETs and Modules, Si Presto MOSFETs, isolated Gate Drivers and Li-ion Battery Management

ROHM Semiconductor will present its latest products and technologies at PCIM, the leading trade fair for power electronics in Nuremberg, from May 8 to 10 (Hall 12, Booth 601). Based on the most recent developments in the R/D centers of ROHM and LAPIS and the expertise in the design and manufacturing of state-of-the-art power management, the products address the increasing demand for more energy efficiency, miniaturization, reliability, reduced component count and costs while providing optimum performance at the same time. Highlights: 1. SiC Schottky barrier diodes, SiC MOSFETs and SiC modules ROHM has further advanced the development of next-generation SiC (Silicon Carbide) Schottky barrier diodes (SBD) and MOSFETs, featuring lower loss and high voltage capability. This makes them ideal for a wide range of applications, including PFC (power factor correction) circuits, converters and inverters for power conversion. The MOSFETs are especially suited for power converters used in EV/HEV and industrial units. With the new SiC modules, switch loss can be reduced up to 80% compared to IGBT modules and a water cooling system can be replaced by an air cooling system. 2. Si Presto MOSFETs ROHM's high voltage resistance PrestoMOS™ series is ideal for power supplies featuring an integrated inverter. High-speed switching combined with an internal diode including high trr characteristics results in greater efficiency and lower loss while contributing to smaller designs. At PCIM, new package types such as the CPT3 (D-PAK) and LPT (D2-PAK) will be showcased at the booth. 3. Isolated Gate Drivers With a unique IC technology ROHM maximizes the SiC characteristics. The new Gate Drivers developed for SiC MOSFETs and IGBTs integrate a core-less transformer with 2,500Vrms isolation and can supply a gate voltage up to 24V. An original noise cancelling technology results in a high CMR and the driver can also support negative power supply. Additional features are a short propagation delay, a miller clamp output and a desaturation protection. 4. Li-ion Battery Management ICs ROHM features its new series of ML52x ICs for the control, monitoring and protection of Lithium-ion battery packs, compatible with up to 14 cells with one IC. They detect the over-charge, over-discharge and over-current of each cell and automatically control the external charge/discharge MOS-FET. They also provide a cell voltage monitoring pin for the external MCU and passive cell balancing.