Fujitsu Semiconductor (Shanghai) Co., Ltd. announced the release of three MB91580 series products, mainly for energy-saving automotive drive motor control. A member of the FR family of high-performance 32-bit flash embedded microcontrollers (MCUs), the family is widely used in drive motor control for electric vehicles (EVs) and hybrid vehicles (HVs). Samples were delivered at the end of April 2011.
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As energy conservation and environmental protection have become an important direction for the development of the automotive industry, the demand for electric vehicles (EVs) and hybrid vehicles (HVs) as energy-saving vehicles has grown rapidly worldwide. The popularization of energy-efficient vehicles and the promotion of driving ecology require innovation in improving motor operation, reducing energy consumption and reducing system costs. Fujitsu Semiconductor keeps up with market demand, the first delivery of the energy-saving automotive drive motor control chip MB91580 series has a dedicated embedded resolver sensor interface, which can pioneer control the three-phase motor used in EV and HV, and supports the car drive motor control MCU. Demand.
Figure 1: Motor Control MCU Development Roadmap
The MB91580 series has a built-in CPU core and peripheral functions for EV/HV motor control. It is worth mentioning that the resolver sensor has a built-in dedicated interface circuit to reduce system cost and achieve high EV/HV drive motor. The torque response control process achieves the goal of improving motor operation and reducing energy consumption.
Sample price and delivery time
Product lineup
sales target
It is estimated that a total of two million pieces will be sold in three varieties in FY2014.
Characteristics of this series
1. Peripheral functions for high torque response control processes.
The EV/HV drive motor control that requires high torque response has the following peripheral functions. Built-in these peripheral functions can reduce system cost and achieve high-speed feedback control to improve motor operation and low energy consumption.
12-bit A/D converter and R/D converter with high precision detection current and motor position. The R/D converter detects the electrical angle and synchronizes with the A/D converter that detects the three-phase current.
A dedicated calculation circuit is installed so that the SIN (sinusoidal) value and the COS (cosine) value of the electrical angle detected by the built-in R/D converter can be automatically calculated. The information required for feedback control of the motor is generated by hardware.
Figure 2: Current and position detection and feedback control
2. FPU built-in high performance CPU core.
The dedicated floating-point unit (FPU) integrated in the 160DMIPS high-performance CPU utilizes information processing vector conversion and PID control operations generated by built-in peripheral functions. This feature helps improve motor operation and reduce energy consumption by enabling further fast feedback control. In addition, by suppressing the CPU load associated with motor control, the system can be controlled instead of the power motor (DC/DC converter and battery management, etc.), which helps to reduce overall cost through system integration.
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