Date: 30th Jun 2011
32-bit MCUs for real-time motor-control
of electric cars/vehicles
Fujitsu Semiconductor America (FSA) has introduced a series
of new 32-bit microcontrollers (MCUs) with range of interface
peripherals supporting the needs of designing 3-phase inverter
motor control for electric (EV) and hybrid cars/vehicles
(HV).
The FR family of 32-bit RISC member MB91580 series embeds
Flash memory and feature optimized interface peripherals
for EV and HV 3-phase inverter motor control electronics.
This MCU also targets power electronics applications such
as electric generator control and any other electric motor
control industrial/power electronic systems.
The efficient loop back control is achieved by using a
high-speed, dedicated 12-bit A/D converter and Resolver-to-Digital
Converter (RDC). Dedicated hardware generates the required
motor control parameters (such as the electrical angle's
sine and cosine values) to accurately detect motor current
and position at high speeds, enabling precise motor control
waveform generation. The FR core based FR81S CPU delivers
160DMIPS processor performance. An IEEE-754-compliant Floating
Point Unit enables the MCU to process vector conversion
and PID control calculations rapidly, using data from the
12-bit A/D converter and RDC.
Fujitsu says the solution based on this MCU family delivers
highly optimized, real-time controllability for EV and HV
motors with fast and efficient loop back operation, and
the best torque control possible. This level of integration
and performance enables system designers to reduce overall
motor and motor-control unit costs significantly, claims
Fujitsu.
The three members in the series are the MB91F585 (with
576 KB Flash and 48 KB RAM); the MB91F586 (with 832 KB Flash
and 64 KB RAM); and the MB91F587 (with 1088 KB Flash and
96 KB RAM).
"The MB91580 series is an ideal design choice for
electric and hybrid vehicles because it is designed specifically
to support motor control requirements," said Akio Nezu,
senior manager for marketing, Fujitsu Semiconductor America.
"These microcontrollers use a dedicated embedded resolver
sensor interface to control the three-phase inverter, resulting
in optimal motor controllability. This enables the system
designer to achieve higher performance while lowering the
system cost."
Available: Now in samples.
Package: 144-pin quad flat pack
Price: $25 each.
For more information visit: //us.fujitsu.com/semi/mcu/HEV-EV.
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