1700V Silicon Carbide family targets renewables, drives

1700V Silicon Carbide family targets renewables, drives

New Products |
By Nick Flaherty

onsemi is launching three 1700V silicon carbide (SiC) devices as part of its newly named EliteSIC family.

The 1700 V EliteSiC MOSFET and two 1700 V avalanche-rated EliteSiC Schottky diodes are launched at CES 2023 and are aimed at renewable energy infrastructure and industrial drive applications.

The NTH4L028N170M1 MOSFET takes the breakdown voltage up from 1200V to 1700V for higher power renewable energy applications such as solar inverters and wind turbines. These are moving to higher voltages with solar systems now aiming to move from 1100 V to 1500 V DC buses.

The MOSFET has a maximum Vgs range of -15 V/25 V, making it suitable for fast switching applications where gate voltages are increasing to -10V, delivering increased system reliability.

At a test condition of 1200 V at 40A, the 1700V device achieves a gate charge (Qg) of 200 nC – which is market-leading compared to equivalent competitive devices that are closer to 300 nC. A low Qg is critical to achieving high efficiency in fast switching, high-power renewable energy applications.

The two 1700 V avalanche-rated EliteSiC Schottky diodes (NDSH25170A, NDSH10170A) allow designers to achieve stable high-voltage operation at elevated temperatures while offering high efficiency enabled by SiC and improved margin between the maximum reverse voltage (VRRM) and the peak repetitive reverse voltage of the diode.

The diodes also provide excellent reverse leakage performance with a maximum reverse current (IR) of just 40 µA at 25°C and 100 µA at 175°C – significantly better than devices rated at 100 µA at 25°C.

“By providing best-in-class efficiency with reduced power losses, the new 1700 V EliteSiC devices reinforce the high standards of superior performance and quality for products in our EliteSiC family as well as further expand the depth and breadth of onsemi’s EliteSiC,” said Simon Keeton, executive vice president and general manager, Power Solutions Group, onsemi.

“Together with our end-to-end SiC manufacturing capabilities, onsemi offers the technology and supply assurance to meet the needs of industrial energy infrastructure and industrial drive providers,” he said.

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