Motor system ICs control DC motors and reduce board space requirements

To control small electric motors in cars, Infineon Technologies has developed what it claims are the world’s first multiple half-bridge drivers for MOSFETs ICs with integrated power supply and communication interfaces.

The Motor System ICs are designed for control of both brushed and brushless DC motors. They require only half the board space compared to existing solutions, says Infineon. Andreas Doll, vice president and general manager, automotive body power at Infineon, added: “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 Motor System IC family comprises a total of seven variants, all in a VQFN-48 package, measuring 7.0 x 7.0mm.

The devices contain up to four half-bridge drivers for external n-channel MOSFETs. An integrated linear voltage regulator supplies 5.0V with an output current of 250mA. A CAN-FD transceiver with 5Mbits per second according to ISO 11898-2:2016 which includes partial networking option and/or a LIN transceiver according to 2.2A / ISO 17987-4 and SAE J2602 are available for communication.

Development samples for initial devices are available. Series production is scheduled to start in Q4 2020.

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