Motor system ICs for control of small electric motors

10-07-2020 | Infineon | Automotive Technologies

Infineon Technologies now offers a new product family called Motor System ICs created for control of brushed and brushless DC motors. These ICs are claimed to be the world's first multiple half-bridge drivers for MOSFETs with integrated power supply and communication interfaces.


"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.


In terms of integration, the new ICs complement the company's existing motor control IC portfolio, ranking between discrete solutions and highly integrated embedded power devices that incorporate an ARM processor. The new product family includes a total of seven variants, all in a VQFN-48 package (7mm x 7mm).


The devices comprise up to four half-bridge drivers for external N-channel MOSFETs. An integrated linear voltage regulator supplies 5V with an output current of 250mA. A CAN-FD transceiver with 5Mbit/s 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 offered for communication.

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