Suitable for auxiliary power supply of 3-phase conversion system
Also in the DC link connection auxiliary circuit
Single-ended flyback topology possible


Infineon Technologies launched its CoolSiC MOSFET 1700V product on the 16th.

Maximizing the physical properties of silicon carbide (SiC), this 1700V surface-mount device (SMD) offers high reliability and low switching and conduction losses. It is ideal for auxiliary power supplies in three-phase conversion systems, including motor drives, renewable energy, charging infrastructure, and HVDC systems.

CoolSiC MOSFETs in SMD packages, 1700 V, enable single-ended flyback topologies for _DC -link auxiliary circuits with input voltages up to 1000 V. Furthermore, their low power loss allows for natural convection cooling without a heat sink.

The 1700V CoolSiC product is suitable for flyback topologies using +12V/0V gate-source voltages and is compatible with common PWM controllers. It can operate directly from the flyback controller without requiring a gate driver IC.

The on-resistance ratings are 450mΩ, 650mΩ, and 1000mΩ. Adopting a 7-lead D2PAK SMD package, it offers extended creepage and clearance distances of 7 mm or more. It meets 1700 V applications and PCB requirements, while minimizing the effort required for insulation.