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ROHM Semiconductor

ROHM's Isolated Power Supply Control ICs for Industrial Inverters

No optocoupler or auxiliary winding contributes to greater miniaturization, power savings, and reliability

ROHM has recently announced the availability of isolated flyback-type DC/DC converter control ICs for inverters in high power industrial equipment such as FA/solar inverters and power storage systems.

Isolation is almost always built into electronic equipment to provide protection against shock and damage. High voltage, high power industrial applications (including power storage systems and solar inverters which are seeing increased adoption) are no exception, requiring even more stringent reliability demands due to the harsher temperature conditions and the need for continuous, long-term operation.

New 1700V SiC MOSFET and Control IC Evaluation Board from ROHM Semiconductor

ROHM Semiconductor has recently announced the availability of a new 1700V SiC MOSFET optimized for industrial applications, including manufacturing equipment and high-voltage general-purpose inverters.

In recent years, the growing trend to conserve energy in all areas has increased the demand for energy-saving power semiconductors, particularly for applications in the industrial sector such as general-purpose inverters and manufacturing equipment. In the majority of auxiliary power supplies, which are used to provide drive voltages for power supply circuits, control ICs, and various supplementary systems, high breakdown (1000V+) silicon MOSFETs are normally utilized. However, these high-voltage MOSFETs suffer from large conduction loss (often leading to excessive heat generation), and present problems related to mounting area and the number of external components, making it difficult to reduce system size. In response, ROHM developed low-loss SiC MOSFETs and control ICs that maximize performance while contributing to end-product miniaturization.

IoT Developers Kit Based on NXP® i.MX 7D MPU and ROHM's BD71815GW PMIC

ROHM and eInfochips collaborate and demonstrate a small, energy-efficient real-time audio/video Smart camera application using the new iMX7D-based developers kit

Santa Clara, Calif., and Sunnyvale, Calif., – May 19, 2016 – ROHM and eInfochips today unveiled a live-streaming demo of a smart IoT camera reference design at the 2016 NXP FTF Technology Forum. 

The reference design combines a state-of-the-art System On Module (SOM) incorporating the NXP i.MX7 Dual applications processor and ROHM's BD71815GW Power Management Integrated Circuit (PMIC) with a baseboard that provides access to various sensors and peripherals via eInfochips' Software Development Kit (SDK), including MicroSD and USB slots that enable developers to store data and interface with external devices such as a WiFi module for streaming audio and video to a smartphone. The built-in battery allows the device work in any location without wiring for power, and an LCD interface is included for enabling two-way video that may be required for certain applications.

Advantages of Using Silicon Carbide in Power Electronics

The advantages of using SiC in power electronics is the focus of a large number of semiconductor news studies and reports.  These reports prove just how advantages using SiC can be when designing power electronics.

Although silicon offers numerous benefits and advantages in power MOSFETs, it also displays some limitations that are characteristic to silicon material properties.  Properties like low thermal conductivity, low bandgap energy, and limitations in switching frequencies.  Power semiconductor devices, however, that are made with silicon carbide (SiC), don’t possess those types of material limitations. 

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