11 May 2012
Automotive grade igbts said to be more efficient than mosfets
International Rectifier has launched a new 600V automotive grade igbt platform targeted at fast switching applications in electric and hybrid EVs.
The COOLiRIGBT family of devices operate at the same speed as mosfets but are said to offer higher efficiency at high current levels. The first generation covers a broad current range and offers a minimum short circuit rating of 5µs, low Vce(on) and positive Vce(on) temperature coefficient.
"With an extended temperature range of 175°C and much simpler and more rugged device structure, IR's 200kHz capable COOLiRIGBTs offer a superior and lower cost solution for fast switching applications such as HEV dc/dc converters or chargers and power supplies used in plug in HEVs and EVs compared to super junction mosfets," said Benjamin Jackson, senior power switch product manager, IR's automotive products business unit.
The AUIRGC655A1N0 is optimised for main electric and hybrid vehicle inverters and large motor drives while the AUIRGC65A20N0 and AUIRGC65G20N0 are targeted for power supply and high switching frequency applications. IR says the devices also offer enhanced efficiency when used in resonant zero current switching (ZCS) topologies.
Typical applications include on board dc/dc converters, motor drives, and battery chargers.
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