12V pumps and fans
Optimize your design with Infineon's motor control solutions for 12V pumps and fans
Due to their close proximity to the engine, motor control solutions for automotive pumps and fans must be extremely robust and able to withstand high temperatures. Infineon enables cost and space-optimized, efficient and high-performance automotive motor control solutions for 12V pumps and fans applications such as auxiliary pumps and fans for e.g. thermal management, fuel pump, oil pump, water pump, HVAC blower, engine or battery cooling fan.
Integrated solutions qualified up to 175°C enable optimization
Turning to general market trends, there is a rising demand for upgraded pumps and fans that come at a higher price. Upgrading is advantageous but also increases overall system costs at a time marked by high competition. Cost-optimized integrated solutions for motor control applications are an ideal way to counteract higher component costs.
Returning to the size factor, integrated solutions also greatly reduce the PCB size for small auxiliary pumps. This is further supported by the integration of several functions like the integrated charge pump supporting a 100% duty cycle for stop-start operation. Actually, our integrated motor control solutions, Embedded Power ICs, do not require any other external devices besides the power stage or MOSFETs. This makes them the smallest on the market and ideal for extremely small and compact designs in which space comes at a premium. For motor control projects that require absolute angle sensing with e.g. a TMR or GMR sensors, the Infineon TLE9879-2QXA40 features an additional two differential 14-bit Delta-Sigma ADCs for higher system optimization. To reduce your design-in effort, we offer software and hardware compatible devices for both DC and BLDC applications, providing you a solution that is optimized from start to finish.
The fuel pump ECU is generally placed outside the fuel tank, while the pump itself is located within. This results in long wires between the ECU and motor, which calls for fast switching speeds to minimize power dissipation. Furthermore, ECU cooling presents its own design challenges: Fuel pump runs continuously and the ECU is often positioned below the rear seat, where it has limited cooling capabilities.
Our integrated high-current NovalithIC™ half-bridge ICs help optimize the power spread and cooling in fuel pump applications. The “worst-case” switching times are specified in the datasheet, allowing you to minimize the switching spread in relation to a discrete MOSFET in particular. The integrated NovalithIC™ half-bridge requires only one single cooling area, which serves both high-side and low-side current switching. Furthermore, NovalithIC™ comes with overtemperature shutdown and latch behavior to protect the MOSFETs thermally. Thanks to the thermal feedback, NovalithIC™ also enhances switching speeds for lower switching losses.
Our Motor System IC is the first solution in the market with integrated bridge drivers, power supply and CAN FD / LIN communication interface significantly reducing the required board space and amount of component counts.
Infineon's Motor System IC uses a patented concept of adaptive MOSFET gate drive. This multi-stage slew rate control enables EMC tuning via SPI, including adjusting slew rate with independence from dead-time and turn on/off delays. Self-adaption of external MOSFET switching allows the balancing of power dissipation vs. EMC performance. This combined with overtemperature protection features such as prewarning and individual thermal shutdown, diagnostic and supervision functions (e.g. fail-safe output, watchdog, fail-safe operating mode and short-circuit protection) embedded within the Motor System IC help to optimize the power dissipation and thus temperature for use in fuel pump applications.
Using Field Oriented Control (FOC) together with the integrated current sense amplifier (CSA) in the BLDC Motor System IC (TLE9563/TLE9564) eliminates the need for hall sensors for additional system-level savings. Furthermore, multiple variants of the Motor System IC offer peerless scalability with the number of half-bridges and transceivers.
The reference design targets engine cooling fan applications and it is capable to drive 12V BLDC motors up to 1 kW. It uses the TLE9879QXW40 (Embedded Power IC, System-on-Chip (SoC)) and the IAUA250N04S6N007 (OptiMOS™-6 40V MOSFET) as main devices. The reference design offers minimal BOM and reduced PCB size. Furthermore, it is optimized in terms of EMC and thermal performance. It includes layout and schematic files, along with comprehensive support documents including EMC measurements, thermal analysis and a detailed board description.
For more detailed information, please visit our reference design webpage.
Auxiliary water pump |Learn more about intelligent motor control vs. mechanical solutions
The double water pump demonstrator shows the advantages of intelligent motor control against mechanical solutions. AN intelligent BLDC motor control solution improves efficiency and reduces CO2 emissions.
Megatrends in automotive and the increasing demand for smart motor control solutions
The number of small electric motors increases continuously with more sophisticated equipment of cars. Hybrid and electric vehicles demanding comprehensive cooling & HVAC systems or self-driving vehicles enabling more passenger comfort boost this development. Watch the video and see the trends.
Infineon offers a large choice of motor control ICs to meet specific design challenges
Infineon is a one-stop-shop for motor control solutions with the broadest portfolio of motor control ICs. Explore the different integration levels from a discrete partitioning to highly-integrated System-on-Chip (SoC) solutions and get the best fit for your requirements.
In this training you will:
- Know more about Infineon’s wide MOSFET selection for 48 V mild-hybrid electric vehicle, or MHEV, applications
- Understand why and how Infineon is strengthening its position in the 40 V MOSFET market, and be familiar with Infineon’s newest 60 V MOSFETs
The microlearning has an application focus on auxiliary pumps and fans. It will give an overview of the application requirements of pumps and fan applications. In detail the key challenges of engine cooling fan, fuel pump, and oil pumps are shown and how those can be solved with Infineon’s highly-integrated system-on-chip solution.
- Get to know why systems require frequent updates, how this is done and how automotive systems try to ensure their security when they are updated
- Learn how AURIX™ families of microcontrollers support over-the-air software updates
In this training you will:
- Find out about the different topologies used for thermal management for different drivetrains
- Learn which solutions Infineon provides for automotive water pump applications