The internal circuit diagrams of different companies and different types of PIM are roughly the same, the difference is the voltage/current specification. The figure below is the internal circuit diagram of an IGBT PIM module. 7 in 7 in 1 means that the module contains 7 IGBT dies, and 1 means that multiple dies are assembled into the module housing. For IGBT modules, the basic components are IGBT three-phase full bridge with 6 units and corresponding FWD, DB (1 unit IGBT and 1 FWD), 6 rectifier diodes for three-phase rectification additional, May include temperature sensing NTC and sampling resistors for the protection circuit. PIM is generally referred to as a 6 in 1 module that includes rectification and DB (active brake switch), which is generally a 7 in 1 module. The difference between the two is the internal circuit structure. In appearance, IPM has no significant difference from PIM except for the many pins. In fact, the key to both is the power module, and IPM can be considered a special type in PIM. ![]() Chinese data is generally translated as "smart power module" IM is the abbreviation of Power Integrated Module, Chinese means power integration module. ![]() IPM is the abbreviation of Intelligent Power Module. According to the complexity of the internal circuit of the module, IGBT modules are divided into two categories: IGBT modules and IGBT IPM/PIM.
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