Infineon Technologies AG has introduced the TLE988x and TLE989x families extending the company’s portfolio of MOTIX MCU (microcontroller unit) embedded power ICs (integrated circuit). By integrating a gate driver, microcontroller, communication interface and power supply on a single chip, Infineon’s system-on-chip solutions achieve a minimal footprint.
The new TLE988x and TLE989x families offer higher performance and now feature CAN FD (controller area network flexible data-rate) as the communication interface. The ICs are AEC Q-100 qualified, making them suitable for automotive brushed DC and brushless DC motor control applications in body, comfort, and thermal management applications.
“The new MOTIX MCU embedded power IC families address our customers’ needs for the smallest integrated smart motor control solutions with fast and very robust on-chip CAN FD transceivers for host communication,” says Andreas Doll, senior vice president and general manager smart power at Infineon. “The new product families additionally offer approximately 60% more processing power compared to the well-established TLE987x product family and provide functional safety and cybersecurity functions which are becoming increasingly important for oil pumps in thermal management systems in electric vehicles.”
The new devices use a B4 or B6 bridge N-channel MOSFET (metal-oxide-semiconductor field-effect transistor) driver, respectively, an Arm Cortex M3 microcontroller, and a CAN (FD) controller and transceiver supporting a communication speed of 2 Mbps. Customers experience both communication and enhanced computing performance due to the high system frequency (60 MHz) and the dual flash feature, enabling read-while-write operation.
The relevant features of the new products are ISO 26262 (ASIL B) compliant and some variants have built-in cybersecurity. All of these features are offered in a 7 mm x 7 mm TQFP (thin quad flat pack) package with a footprint.
The MOTIX MCU TLE988x 2-phase bridge driver family and the MOTIX MCU TLE989x 3-phase bridge driver family include multiple devices which offer flash sizes of up to 256 kB and support temperature ranges (T j max) up to 175°C. In addition, the ICs feature Infineon’s patented Adaptive MOSFET Control algorithm, which compensates for the variation of MOSFET parameters in the system by automatically adjusting the gate current to achieve the required switching.
This allows the system to be optimised in terms of EMI (electromagnetic emissions, slow slew rates) and at the same time, power dissipation (short dead times). Adaptive MOSFET Control also enables supply chain flexibility by maintaining the same switching behavior across variations in MOSFET production lots or differences between MOSFET suppliers.
To accelerate the evaluation and design-in process, the MOTIX MCU embedded power ICs are completed by an ecosystem that includes software, evaluation boards and kits, as well as several tools for simulation, configuration and visualisation. Infineon also offers a 150 W coolant pump reference design. In addition to sample and demo software, the company provides a stack of commercial software products covering automotive ASPICE (Automotive Software Process Improvement Capability dEtermination) level qualified motor control libraries including FOC (field oriented control) algorithms.
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