Technologies and Benefits of the DIPIPM Family
Muzaffer Albayrak , Mitsubishi Electric Europe;
Philipp Jabs , Mitsubishi Electric Europe
Designers of inverters for small AC motors in consumers’ and general purpose industrial applications are required to meet increasingly challenging stringent efficiency, reliability, size, and cost constraints. Classically, many of such small inverters designs utilize discrete power device packages along with the necessary auxiliary components needed to realize the interface, drive, and protection functionalities. Clearly, however, there are several problems associated with this approach. One drawback is the high manufacturing cost associated with mounting and isolating multiple high voltage discrete components (600V~1200V blocking voltages range). In addition, relatively large and complex PCB designs are required to meet all of the spacing and layout requirements of the drivers and discrete power devices combination. Another equally perplexing problem is maintaining consistent performance and reliability when the characteristics of the drivers and power devices are not properly matched. An alternative solution to these problems is to use an integrated power module that contains all the required power devices along with matched gate drivers and protective functions integrated in low-voltage and high-voltage ICs (LVIC & HVIC).
The DIPIPM™ concept was originally developed for the needs of high volume inverterized consumer applications like washing machines, air-conditioners, refrigerators etc. Over the past 22 years, the DIPIPM™ concept received very positive market acceptance with more than 470Mio pieces been manufactured by Mitsubishi Electric in different packages, voltage and current ratings. In the lower power range (few hundreds Watts ~ few kilo Watts), the new very compact surface-mount package IPM (MISOP™) as well as the SLIMDIP™ utilize the latest reverse conducting IGBT (RC-IGBT) technologies. For the intermediate power range (few kilo Watts), the Super Mini DIPIPM provides high performance advantages for a wide range of applications realized with the utilization of the latest generation of both Si and SiC devices. At the higher power-range, for industrial drive applications (few tens kilo Watts), the new DIPIPM+™ series was developed as an “All-in-One” solution addressing the specific needs of compact industrial 400VAC-inverters in a CIB (Converter Inverter Brake) configuration.
The success of the DIPIPM™ family is the direct result of advantages gained through optimized integration technologies. Some of these advantages include the following: (1) Reduced design time and improved reliability offered by the factory tested, built-in gate drive and protection functions, (2) Lower losses resulting from simultaneous optimization of power chips and protection functions, (3) Smaller size resulting from the use of bare power die and bare control chips, and (4) Improved inverter manufacturability resulting from lower external component count and isolated heat sink mounting surface.