Fujitsu Semiconductor's one-stop car system control solution
Whether it is a traditional car or a new energy vehicle, safe, green, and comfortable automotive electronic systems are common demands. Car safety includes zero-failure, functional safety, and self-diagnostic modules; environmental friendliness refers to the reduction of vehicle weight through the use of on-board networks In order to reduce energy consumption, it also includes the use of environmentally friendly materials and processes; powerful graphics and image processing technology, and an intuitive and friendly man-machine interface bring drivers a comfortable driving experience.
Figure 2: Fujitsu Semiconductor provides a one-stop system control solution
Fujitsu Semiconductor can also provide a package of solutions for new energy vehicles, basically covering the entire electronic system of an EV / HEV vehicle. From the MB91580 series dedicated motor control 32-bit MCU solution integrated with internal RDC, to the graphical virtual display instrument using the Fujitsu GDC solution; from the BMS solution and DC-DC converter designed with the low-cost MB96F613 using CAN bus, to multi-channel Complete vehicle controller developed by CAN bus MCU FR81S. Moreover, these 16-bit and 32-bit MCUs of different grades all use the same low-cost emulator and the same compilation environment, which is very convenient and cheap for customers to develop.
Fujitsu Semiconductor ’s motor control MCU solutions for EV / PHEV are innovative, including: 1. Improve motor operation; 2. Reduce energy consumption; 3. Reduce system costs. MB91580 MCU is the world's first high-performance MCU specifically for motor control of new energy vehicles. It integrates key peripheral functions such as RDC, which can shorten motor control time and simplify system design.
Figure 3: Fujitsu MCU innovations in motor control
Figure 4: MB91580 built-in RDC: system design is greatly simplified!
For electric vehicles and plug-in hybrid vehicles, as shown in Figure 3, the existing system uses a dual chip: MCU + external RDC (resolver converter) solution. The CPU reads the angle value from the external RDC and then looks up the table. Search for sin and cos values. The Fujitsu Semiconductor's MB91580 solution uses a single chip: the MCU integrates RDC, and the CPU can read the absolute angle value, sin, and cos value directly from the register at any time. This can greatly simplify the hardware circuit and simplify the software design work.
"If the RDC is left alone, the cost of the entire motor control system may account for US $ 6 or US $ 7. In 2013, Fujitsu Semiconductor will also integrate the second-generation new energy vehicle motor control MCU product with two RDCs inside the chip to achieve The purpose of further reducing costs. "Ding Jiezao said.
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