MLX81205_15 Datasheet, PDF (1/18 Pages) Melexis Microelectronic Systems – BLDC Motor Controller

MLX81205/07
Features
 Microcontroller: MLX16-FX RISC CPU
16bit RISC CPU with 20MIPS and Power-Saving-Modes
Co-processor for fast multiplication and division
Flash and NVRAM memory with ECC
In-circuit debug and emulation support
 Supported Bus Interfaces:
LIN interface with integrated LIN transceiver supporting LIN 2.x, certified LIN protocol software provided by Melexis
In-Module programming (Flash and NVRAM) via pin LIN using a special Melexis fast protocol
PWM interface
 Motor Controller
Patented algorithms for sensor-less 3-phase sine and trapezoidal motor control
Phase voltage integration filter for BEMF voltage sensing at lowest speeds
Position dependent phase inductance sensing via shunt current measurements at stand still and low to medium
speeds
Support of Star and Delta based motor configurations without the need for center star point
Support of 3-phase switched reluctance motor control
 Voltage Regulator
Direct powered from 12V board net with low voltage detection
Operating voltage VS = 5V to 18V
Internal voltage regulator with possibility to use external regulator transistor
Very low standby current, < 50µA in sleep mode, wake-up possible via LIN or local sources
 Pre-Driver
Pre-driver (~27 Rdson) for 3 N-FET half bridges with programmable Inter-Lock-Delay and slope control for optimal
EMC and thermal performance during N-FET switching
Monitoring of Drain-Source voltages of the N-FETs
 Periphery
Full duplex SPI, Master/Slave, double-buffered, programmable speed, DMA access.
Full duplex UART
4 independent 16 bit timer modules with capture and compare and additional software timer
3 programmable 12 bit PWM units with programmable frequencies
10 bit ADC converter (2µs conversion time) and DMA access
On-chip temperature sensor with ±10K accuracy
System-clock-independent fully integrated watchdog
40MHz clock from internal RC oscillator with PLL
Optional crystal oscillator
Load dump and brown out interrupt function
Integrated shunt current amplifier with programmable gain
Applications
The MLX81205/07 are designed to control BLDC motors via external FET transistors for applications like oil pumps,
water pumps, fuel pumps, blowers, compressors, and positioning actuators.
390108120502
Rev. 4.7
Page 1 of 18
Product Abstract
11/2/2015