The products including sophisticated gate drivers. “The embedded gate driver solves multiple challenges related to fast-switching SiC transistors: negative drive and active Miller clamping prevent parasitic turn-on, desaturation detection and soft-shut-down react rapidly but safely to short-circuit events, under-voltage lock-out functions on gate driver and dc bus voltages monitor the proper operation of the system,” according to the company (see single phase in above diagram).
Two 1.2kV modules have pin-fin baseplates for liquid cooling:
- CXT-PLA3SA12340AA 340A max continuous current, 4.19mΩ on-resistance
Total switching energy: 7.48mJ ‘on’ and 7.39mJ ‘off’ at 600V 300A
- CXT-PLA3SA12550AA 550A max continuous current , 2.53mΩ on-resistance
Total switching energy: 9mJ ‘on’ and 7mJ ‘off’ at 600V 300A
The provided current figures seem to be for Tcase = 25°C operation (Tj 175°C, Vgs 15V). The 550A part, for example, drops to 400A max for Tcase = 90°C in the data sheet.
“Co-design of the power module and the gate driver enables optimising for lowest switching energies by carefully tuning dV/dt and controlling voltage over-shoots inherent to fast switching,” said Cissiod.
Reverse bias safe operating area (RBSOA) authorises peak currents up to 600A with dc bus voltages up to 880V – allowing use with 800V batteries.
A 1.2kV air cooled module for aerospace electro-mechanical actuators and power converters:
- CMT-PLA3SB12340AA 340A max continuous current, 3.25mΩ on-resistance
Total switching energy: 8.42mJ ‘on’ and 7.05mJ ‘off’ at 600V 300A
Cooling is through the flat AlSiC baseplate and the unit is rated for 175°C junction temperature and 125°C gate driver ambient temperature.
“We initially developed this platform to accelerates SiC-based motor drives development for e-mobility and we are also very pleased to see demand from aerospace customers,” said Cissiod CEO Dave Hutton.
Data sheets can be reached through this product page