400W automotive electronic water pump scheme based on Infineon products
[Post time:2023/3/9 15:36:00] Reading time:297
The automobile water pump is an important part of the engine cooling system. Its function is to make the coolant flow rapidly in the engine cooling channel to maintain the normal operating temperature of the engine. According to the different driving modes, the water pump can be divided into mechanical water pump and electronic water pump. Compared with the mechanical water pump, which is easily affected by the engine speed, the electronic water pump is controlled by the electronic unit and can work flexibly according to the actual cooling demand of the engine, which makes it popular in new energy vehicles. The 400W automobile electronic water pump scheme launched by the United Nations Pinka based on the Infineon TLE9879QXW40 chip has the characteristics of flexible control and high efficiency, which can improve the reliability of the automobile cooling system.
The core of this solution is the TLE9879QXW40 single chip three-phase motor driver of Infineon, which integrates the ARM? Cortex-M3? The core can realize advanced motor control algorithms such as field-oriented control. Six fully integrated NFET drivers are included in the driver. After optimization, the three-phase motor can be driven by three external power NFET, a charge pump supporting low-voltage operation and programmable current, and current slope control for optimizing EMC behavior. TLE9879QXW40 peripheral integrates a current sensor, a successive approximation ADC synchronized with the acquisition and comparison unit for PWM control, and a 3-bit timer. A LIN transceiver is also integrated to communicate with devices and many common I/O. In addition, the TLE9879QXW40 also includes an on-chip linear regulator to supply power to external loads
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