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48 V Power Architecture

A newly emerging technology in the xEV vehicle world is that of 48 V dual-voltage architecture MHEV systems. In these vehicles, the primary voltage source is a 48 V Lithium Ion (Li-ion) battery pack. These 48 V battery packs are capable of driving much higher power loads, as compared to the 12 V battery. They are charged by the output of a permanent magnetic electric machine, called an Integrated Starter Generator (ISG) or Belt Starter Generator (BSG). The Starter/Generator functions as both the starter, and generator. It charges the battery and supplies current to the various 48 V vehicle loads. Starter/Generators come in various sizes, shapes, and power levels. They can be mounted at various locations along the powertrain, depicted as P0-P4, with the highest power rated types located on the vehicle’s transmission or rear axle.
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Technical Documents
Automotive 3-Phase IGBT Smart Power Module User’s Guide - 650 V Auto SPM® Series
The Auto SPM® Series extends the existing Smart Power Module product portfolio, qualifying them to meet the performance and reliability requirements of automotive auxiliary motor drives in Hybrid and Electric Vehicle applications. Additionally, the Auto SPM® increases the component integration, reduces footprint and simplifies assembly.
Automotive 3-Phase IGBT Smart Power Module User’s Guide - 650 V Auto SPM® Series
Automotive Smart Power Module, 650 V ASPM27 Series
The 650 V ASPM27 series extends the existing Intelligent Power Module product portfolio, qualifying them to meet the performance and reliability requirements of automotive auxiliary motor drives in Hybrid and Electric Vehicle application. This application note supports the 650 V ASPM27 series.
Automotive Smart Power Module, 650 V ASPM27 Series
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