It operates with input voltages ranging from 7V to 18V, ensuring compatibility with automotive power systems and applications requiring 3-phase full-bridge topology.
A 150W coolant pump plays a crucial role in various industrial, automotive, and mechanical applications, ensuring efficient thermal management by circulating coolant fluid to regulate temperature. In automotive systems, these pumps maintain optimal engine temperatures, ensuring smooth operation and fuel efficiency. In industrial machines, they are essential for cooling processes in CNC machines, injection molding, and power generators. Such pumps find applications in HVAC systems, medical equipment, and renewable energy setups like solar thermal systems, where precise cooling control is vital.
The 150W coolant pump reference design REF_COOLANTPUMP150W by Infineon Technologies AG is specifically tailored to drive 12V brushless DC (BLDC) motors, offering a nominal power output of 150W. This design serves as a benchmark for optimizing electromagnetic compatibility (EMC), component selection, and thermal performance, ensuring efficient and reliable operation. It provides a smooth starting point for prototyping, featuring a variety of connectors to simplify the process. The reference design incorporates advanced Infineon components, including MOSFETs and the MOTIXâ„¢ MCU with CAN-FD, to enhance performance and communication.
At the core of this solution is the TLE9893-2QKW62S, part of the MOTIX MCU family, a 32-bit System-on-Chip (SoC) motor driver that integrates a 3-phase BLDC motor driver and an Arm Cortex-M3 core for advanced motor control algorithms. It includes an integrated CAN-FD transceiver for high-speed communication and flexible general-purpose I/O options. Complementing this is the IAUCN04S7N019D, a Dual MOSFET based on OptiMOS 7 technology, optimized for motor drive and automotive applications. Its compact 5mm x 7mm Dual SSO8 package minimizes PCB space, while offering RDS(ON) values from 1.8 mΩ to 5.6 mΩ, enhancing overall efficiency.
This reference design supports up to 150W power output, ensuring optimal performance for 12V automotive coolant pumps. The board design is highly optimized, with a compact diameter of 60mm, and integrates advanced thermal management to enhance reliability. It features a high-temperature FR4 PCB with 1oz copper spread across four layers, enabling efficient heat dissipation. The single-sided component mounting and various connectors, including those for CAN, monitoring, and external sensors, facilitate ease of use and debugging through SWD and tracebox ports.
Its minimal bill of materials (BOM) and reduced PCB size result from the use of highly integrated components like the MOTIX MCU and the compact OptiMOS-7 Dual MOSFET. The design offers scalability, supporting power outputs from 100W to 1000W by leveraging the MOTIX MCU platform. This makes it suitable for various 3-phase motor drive applications, focusing on automotive coolant pumps and 12V BLDC motor solutions.
Infineon Technologies has tested this reference design. It comes with a bill of materials (BOM), schematics, assembly drawing, printed circuit board (PCB) layout, and more. The company’s website has additional data about the reference design. To read more about this reference design, click here.
