IXYS SEMICONDUCTOR IXYS Adds High Power Versions of its PolarHT™ PolarHVTM Power MOSFETs with Up to 140A of Current Handling Capability

Contacts:

Christopher Gobok IXYS Corporation 3540 Bassett Street Santa Clara, CA 95054 Tel: 408-982-4322; Fax: 408-496-0670 e-mail: [email protected]

IXYS Adds High Power Versions of its Polar HTTM Polar HVTM Power MOSFETs with Up to 140A of Current Handling Capability Wednesday June 28, 8:30 am ET

Santa Clara, CA, June 28, 2006 - IXYS Corporation (NASDAQ: SYXI - News) announced today the release of new high-current Polar HT and Polar HV (hereafter Polar HT/HV) Power MOSFETs that bring additional design flexibility to a broad range of higher power conversion applications based on IXYS Polar HT/HV technology. The Polar HT/HT platform incorporates IXYS proprietary cell-design technology that reduces on-resistance by 30%, enabling improved efficiency. These new Power MOSFETs exemplify IXYS Corporation’s leadership position in the high current, high voltage power conversion market.

IXYS provides a wide selection of these new high-current Polar HT/HV Power MOSFETs. Voltages range from 300V to 800V and currents reach as high as 140A. These Power MOSFETS are offered in a number of different packages, including the standard TO-264 and a variety of IXYS ISOPLUSTM packages, which provides integral backside case isolation. These new devices are all Hi Per FET™ processed, yielding Power MOSFETs with a fast intrinsic body diode for low Qrr and enhanced d V/dt ruggedness. The IXFR140N30P (300 V, 70 A, 0.026 Ohms, Rth,jc of 0.42 K/W) and IXFL100N50P (500 V, 90 A, 0.052 Ohms and? Rth,jc of 0.20 K/W) are just some example parts that offer great electrical and thermal performance when utilizing the ISOPLUSTM packages.

IXYS Polar HT/HV Power MOSFETs bring many technical benefits and cost savings to a large number of applications. High-Current Polar HT MOSFETs will find use in a broad spectrum of battery driven, industrial, and automotive markets. The superior ruggedness and safe operating area of the Polar HT/HV Power MOSFETs will be of additional benefit in applications with challenging operating requirements. High-Current Polar HV MOSFET applications include telecom power systems, SMPS, small DC motor control, PFC circuits and other general purpose high power applications. In many applications, these high-current devices will eliminate the need for multiple components, such as when paralleling lower current MOSFETs for high power applications; this reduces the quantity of switching devices, as well as the number of balancing and drive components. The value of these high-current MOSFETs is further enhanced by the fact that they are