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Belt starter generator 48 V ¨C inverter ISG

Low integration costs and development efforts

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Overview

For a 48 V mild hybrid electrical system, the P0 powertrain configuration with the belt-driven integrated starter generator (BISG) offers cost-effective integration and minimal development efforts. Infineon provides a complete system solution, including microcontrollers, sensors, power drivers, and high-power MOSFETs, to control the BISG. Key components meet stringent safety standards with ISO 26262 ASIL-D compliance.

Benefits

  • Cost-effective integration
  • Minimal development efforts
  • Complete system solution
  • Compliance with safety standards

Block diagram

About

Belt-driven integrated starter generator (BISG) 48 V

The P0 powertrain configuration with the belt-driven integrated starter generator (BISG) offers the lowest integration cost and development effort for a 48 V mild hybrid electrical system. With a focus on cost effectiveness and development efficiency, the BISG stands out as the most economical option for integrating a 48 V mild hybrid system. The electrical machine operates up to 10 kW of maximum peak power with low-power density in a three-phase or six-phase configuration. However, in the belt starter generator, the electrical machine torque is limited for boost by the belt connection, and the engine, and transmission friction losses reduce the recuperation efficiency.

Reduce costs and simplify design implementation with our BISG solution

Infineon offers a complete and comprehensive system solution, including supply ICs, microcontrollers, sensors, smart power drivers, high-power MOSFETs, and transceivers. The block diagram above shows the basic layout of the semiconductors used to control a BISG with an exciter winding (separate excitation of the synchronous machine). Here, the microcontroller enables both field-oriented controls of the electric motor and control of the exciter winding in alternator operation. According to safety requirements, the key components (microcontroller, PMIC, and three-phase gate driver) are ISO 26262 ASIL-D compliant.?

The low integration costs and development effort of the belt-driven integrated starter generator make it an attractive option for manufacturers seeking to implement 48 V mild hybrid electrical systems without significant financial burdens.

Belt-driven integrated starter generator (BISG) 48 V

The P0 powertrain configuration with the belt-driven integrated starter generator (BISG) offers the lowest integration cost and development effort for a 48 V mild hybrid electrical system. With a focus on cost effectiveness and development efficiency, the BISG stands out as the most economical option for integrating a 48 V mild hybrid system. The electrical machine operates up to 10 kW of maximum peak power with low-power density in a three-phase or six-phase configuration. However, in the belt starter generator, the electrical machine torque is limited for boost by the belt connection, and the engine, and transmission friction losses reduce the recuperation efficiency.

Reduce costs and simplify design implementation with our BISG solution

Infineon offers a complete and comprehensive system solution, including supply ICs, microcontrollers, sensors, smart power drivers, high-power MOSFETs, and transceivers. The block diagram above shows the basic layout of the semiconductors used to control a BISG with an exciter winding (separate excitation of the synchronous machine). Here, the microcontroller enables both field-oriented controls of the electric motor and control of the exciter winding in alternator operation. According to safety requirements, the key components (microcontroller, PMIC, and three-phase gate driver) are ISO 26262 ASIL-D compliant.?

The low integration costs and development effort of the belt-driven integrated starter generator make it an attractive option for manufacturers seeking to implement 48 V mild hybrid electrical systems without significant financial burdens.

Design resources

Partner solutions

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