Monday, July 15, 2024

Motor Control ICs For Small Electric Motors In Cars

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  • Infineon introduces new motor control ICs for both brushed and brushless DC motors
  • The devices include half-bridge drivers and with integrated power supply and communication interfaces

From power liftgate and sunroof to electric seat adjustment and fuel pumps – an increasingly large number of electric motors are coming with such features in modern cars.

Infineon Technologies has now released a new product family called Motor System ICs that is designed for control of both brushed and brushless DC motors. The new Motor System ICs complement the existing Infineon motor control IC portfolio, ranking between discrete solutions and highly integrated embedded power products that include an ARM processor.

Integrated with communication interfaces

The ICs contain up to four half-bridge drivers for external N-channel MOSFETs with integrated power supply and communication interfaces. An integrated linear voltage regulator supplies 5 V with an output current of 250 mA. A CAN-FD transceiver with 5 Mbit/s, which includes partial networking option and/or a LIN transceiver according to 2.2A / ISO 17987-4 and SAE J2602 is available for communication.

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“With our highly integrated Motor System ICs, system designers only need half the board space compared to existing solutions. At the same time, system designers maintain the capability to choose their microcontroller,” said Andreas Doll, Vice President and General Manager, Automotive Body Power at Infineon. “Furthermore, we implemented our patented adaptive MOSFET driver that improves electromagnetic compatibility and reduces switching losses in the system.” This control algorithm can compensate for MOSFET parameter spread in the system by automatically adjusting the gate current.

The new product family comprises a total of seven variants, all in a VQFN-48 package (7 mm x 7 mm).  Development samples for the first devices are available now. Series production is scheduled to start in the fourth quarter of 2020.


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