EL SEGUNDO, CA. August 1998 - International Rectifier (IR) now offers two new high efficiency IGBT Power Modules in industry standard outlines with a blocking voltage of 250 volts.

The single switch module with a current rating of 600 A (GA600GD25S) has an internal thermistor for accurate temperature measurements. The other module is configured as a half-bridge and is rated at 400 A (GA400TD25S).

"Both modules exhibit an extremely low saturation voltage and are the perfect choice for numerous applications up to 10 kHz that demand high efficiency performance," said Taraseiskey. They are designed for use as a main switching device in high current applications for forklift trucks, uninterruptible power supplies (up to 75 kVA), battery chargers and low voltage inverters. Both devices are housed in the DUAL INT-A-PAK package outline. This construction employs advanced materials and technologies which allow replacement of multiple die that traditionally have been connected in parallel with a single larger device. This maximizes silicon utilization efficiency and lowers the cost of the product. Minimizing the necessity to parallel die significantly improves current sharing, lowers operating junction temperature and improves performance and reliability.

"The new modules feature very low saturation voltage, cleaner switching characteristics and require less snubbing in the system," Taraseiskey added.

Electrically isolated from the circuit, the base plate is exposed, allowing for direct mounting to the heatsink, meeting industry standards for safety. These modules also possess a low thermal resistance, allowing the device to operate at higher case temperatures while maintaining the operating junction temperature within safe limits. With improved current sharing and lower operating junction temperatures, designers can now achieve higher system reliability.

Modules are released for production and samples are available.