Infineon introduces highly integrated MOTIX motor controller and three-phase grid driver

     Infineon Technology Co., Ltd. has introduced fully programmable motor controllers MOTIX IMD700A and IMD701A. They are packaged with 9 x 9 mm2 64 pin VQFN, which enables wireless electric tools, gardening supplies, UAVs, electric bicycles and automatic guided vehicles to have higher integration and power density to meet user needs.

     MOTIX IMD70xA series controllers integrate MOTIX 6EDL7141 three-phase grid driver IC and an additional XMC1404 microcontroller (MCU) in a very compact package. Its peripherals and specifications are optimized for motor control and drive. Infineon's XMC1404 MCU has a MATH coprocessor with a frequency of 96MHz, which can enhance the computing power commonly used in the sensorless field oriented control (FOC) algorithm, thus improving the system performance. In addition, to ensure first-class control performance, the XMC1404 retains most of the high-end peripherals owned by the XMC4000 family, including PWM timers, position interface (POSIF), and serial communication modules (including CAN bus).

     The characteristic of the motor control IC is that the electromagnetic interference of the system can be minimized by controlling the slew rate of the grid driver. Thanks to its built-in high side and low side charge pumps, as well as many other adjustable grid driver parameters, the IMD70xA series controller can supply power to the grid driver even at a low battery voltage level, and the output voltage is adjustable. In addition, it is also an important advantage to manage EMI through the digital configuration of grid drivers, which allows designers to optimize EMI testing equipment without changing any components on the circuit board. Moreover, the two new products have a complete set of motor driven system protection functions, such as over-current protection, undervoltage locking, overtemperature protection and locked rotor detection, which further improve the reliability and robustness of the system.

     The new device integrates precision power supply and current sensing amplifier, further reducing the demand for external circuits, thus reducing the number of external components and saving PCB space. This not only simplifies the wiring, reduces the BOM cost and assembly cost, but also provides designers with the possibility to improve the system packaging, helping them meet the design challenges brought by the need to install the motor driver in a narrow cavity in such applications. In addition, with the 6EDL7141 grid driver, the new device has higher flexibility and can configure many functions through a user-friendly GUI. The GUI can communicate with PC through SPI to USB interface.