Expanding its portfolio of MOTIX MCU embedded power ICs, Infineon Technologies AG has released the TLE988x and TLE989x bridge driver families. The MOTIX SoCs integrate a gate driver, microcontroller, communication interface and power supply on a single chip for space savings. The new families now feature CAN (FD) as the communication interface.
The MOTIX MCU TLE988x 2-phase bridge driver family and the MOTIX MCU TLE989x 3-phase bridge driver family include multiple devices with Flash memory sizes of up to 256 kB and support temperature ranges (T j max) up to 175°C. The motor driver ICs are AEC Q-100-qualified, making them suited for automotive brushed DC and brushless DC motor control applications in body, comfort and thermal-management applications. They are ISO 26262 (ASIL B) compliant.
A key feature of the bridge driver families is 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 optimized in terms of EMI – electromagnetic emissions, slow slew rates – and at the same time, power dissipation – short dead times,” Infineon said.
In addition, the MOSFET control algorithm provides supply chain flexibility by maintaining the same switching behavior across variations in MOSFET production lots or differences between MOSFET suppliers, the company said.
The TLE988x and TLE989x use a B4 or B6 bridge N-channel MOSFET driver, respectively, an Arm Cortex M3 microcontroller, and a CAN (FD) controller and transceiver supporting a communication speed of 2 Mbits/s. The product families also offer about 60% more processing power compared to the TLE987x family and provide functional safety and built-in cybersecurity functions for some variants.
In addition to fast communication, these devices are reported to deliver the highest computing performance thanks to the high system frequency (60 MHz) and its dual Flash enabling read-while-write operation.
The MOTIX MCU TLE988x and TLE989x, housed in a 7 × 7-mm TQFP package, are in production. Two variants in the LQFP package with 64 pins will follow in December 2023.
For design and evaluation, the MOTIX MCU embedded power ICs offer a range of tools that include software, evaluation boards and kits, as well as several simulation, configuration and visualization tools. A 150-W coolant pump reference design is also available. In addition to sample and demo software, commercial software products cover automotive ASPICE-level-qualified motor control libraries including FOC algorithms.
