IPM (INTELLIGENT POWER MODULES)

G1-SERIES IPM USING 7^TH GENERATION IGBTS FOR GENERAL-PURPOSE INVERTERS, SERVO AMPLIFIERS, ELEVATORS, AND OTHER INDUSTRIAL EQUIPMENT

Variable frequency inverters are being increasingly used in a wide range of motor control systems to deliver enhanced energy efficiency. In the output stage of these inverters, IPM are commonly used for switching electric currents at high speeds. There is growing demand for IPM offering low power loss, high output and small package sizes. The G1-Series IPM deliver reduced power loss and improved reliability for general-purpose inverters, servo amplifiers, elevators, and other industrial equipment.

A novel package technology downsizes industrial equipment and improves its reliability. The new compact packaging achieved by optimizing the main terminal shape reduces the package size by about 30 percent compared to the previous L1 series product, thereby contributing to the provision of compact, lightweight inverters. Integration of insulation and copper base in the substrate helps to increase the thermal cycle life, i.e. the life proven in stress tests of relatively long-term temperature cycling between two case temperatures. Finally this leads to more reliable equipment performance.

Thanks to upgraded 7^th Generation CSTBT^TM chips with incorporated carrier-store effect, power loss and EMI noise could be reduced. Relaxed Field of Cathode (RFC) diode chips incorporating a novel backside diffusion process, with the P layer being partially added on the cathode side and the hole injected during the recovery period to soften the recovery waveform, also contribute to the low power loss and the suppression of a recovery voltage surge.

Two new functions ease the design in the customers’ development processes. The new error mode identification process, featuring Over Temperature Protection (OT), Supply Under Voltage-lock Protection (UV) and Short-Circuit Protection (SC), easily identifies the cause of errors. Thanks to the innovative two steps switching speed function, the trade-off between energy losses and noise could also be improved