Crankshaft starter generator 48V – Inverter ISG
More torque power, but bigger impact on placement in the power train architecture
The Crankshaft-mounted integrated Starter Generator (CiSG) in P1 configuration is mounted space limited between the internal combustion engine and the clutch. Because there is no more belt limitation (slip and fatigue), the electric machine can supply more torque power but the recuperation energy efficiency is still low (engine and transmission friction losses). Due to space limitation, the electrical machine is typically a permanent magnet synchronous type and operates up to 20 kW maximum peak power with medium to high power density in a 3-phase or 6-phase configuration. Compared to BiSG, the CiSG is a higher cost and a bigger impact on the placement in the powertrain architecture.
Infineon offers a complete and comprehensive system solution with high integration for space-saving ranging from supply IC’s, microcontroller, sensors, smart power driver, high power MOSFET, and transceivers. The block diagram below shows the basic layout of the semiconductors used to control a permanent magnet synchronous electric machine in the range of typically 10-20 kW maximum peak power. According to safety requirements, the key components µC, PMIC, and 3 phase Gate Driver are ISO26262 ASIL-D compliant.