Smart LIN driver for DC, Stepper and BLDC motors (1 A) (extended memory)
MLX81334 Melexis
The MLX81334 is a LIN driver for motors targeting automotive mechatronic applications up to 10 W.
MLX81330: LIN motor driver < 0.5 A
MLX81332: LIN motor driver < 1 A
MLX81334: LIN motor driver < 1 A extra memory
Top features
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Motor driver
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Driver for DC/BLDC/Stepper motor
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Ron=0.8Ω typ. for 1 half-bridge + shunt
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2x NFET for each half-bridge
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on-chip charge-pump for top-NFETs
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Vds protection for all NFETs
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Microcontroller:
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MLX16-FX, application CPU
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MLX4, communication CPU
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2x watch-dog
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+50 input interrupt controller
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Common purpose timer
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Memories split per CPU
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MLX16-FX memories:
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64 KB Flash with ECC
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10 KB ROM
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4 KB RAM
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512 B EEPROM
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MLX4 memories:
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6 KB ROM
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512 B RAM
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-
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Function compatible with the MLX81332 (32 KB Flash)
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Small QFN32, 5x5 package RoHS compliant
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Periphery
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Configurable RC-clock 12..32 MHz
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8x general purpose IO’s, digital, analog, 1x high-voltage input, SPI, I2C-slave, UART
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5x 16-bit motor PWM timers
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2x 16-bit timers
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10-bit ADC with < 6 µs conversion time with multiple channels and different ADC references
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Differential current sense amplifier
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Temperature sensor, over-temperature detection
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Over-current detection, over-voltage and under-voltage protection
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Voltage regulators
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Internal voltage regulators, directly powered from 12V battery supply
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Operating voltage Vs = 5.5V to 20V
-
Operation down to 3.5V with reduced analog characteristics, down to 3V without losing register content, down to 1.5V with intact RAM memory
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Low standby current consumption of typ 25µA (max 50 µA) in sleep mode
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Wake-up possible via LIN, external pins or internal wake-up timer
-
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Bus interface
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LIN 2.x/SAE J2602 and ISO17987-4 compliant LIN slave
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Automotive AEC-Q100 qualified
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Designed for safety applications according to ASIL-B (ISO 26262)
-
Maximum IC temperature (with validated mission profile) Tj = 175°C
Smart LIN driver for DC, Stepper and BLDC motors (1 A) (extended memory) - MLX81334
Product description
The MLX81334 is a gen-3 LIN driver for small motors targeting automotive mechatronic applications up to 10 W. This all-in-one LIN driver enables small-footprint applications to control small BLDC, stepper and DC motors, using either sensored or sensorless field-oriented control (FOC) algorithms. The 64 KB on-chip memory of the MLX81334 (versus 32 KB for the MLX81332) provides ample capacity for use of sophisticated software.
The MLX81334 is well suited for
- small Stepper / BLDC flap or valve, < 1 Apk per phase
- small DC flap / valve, or single-coil fan/pump, < 1.4 Apk
For engineering development, the MLX universal master (MUM) can be used to program and interface the IC. For production, third-party equipment & SW must be used. Contact your local representative for more information
Features and benefits
-
Motor driver
-
Driver for DC/BLDC/Stepper motor
-
Ron=0.8Ω typ. for 1 half-bridge + shunt
-
2x NFET for each half-bridge
-
on-chip charge-pump for top-NFETs
-
Vds protection for all NFETs
-
-
Microcontroller:
-
MLX16-FX, application CPU
-
MLX4, communication CPU
-
2x watch-dog
-
+50 input interrupt controller
-
Common purpose timer
-
-
Memories split per CPU
-
MLX16-FX memories:
-
64 KB Flash with ECC
-
10 KB ROM
-
4 KB RAM
-
512 B EEPROM
-
-
MLX4 memories:
-
6 KB ROM
-
512 B RAM
-
-
-
Function compatible with the MLX81332 (32 KB Flash)
-
Small QFN32, 5x5 package RoHS compliant
-
Periphery
-
Configurable RC-clock 12..32 MHz
-
8x general purpose IO’s, digital, analog, 1x high-voltage input, SPI, I2C-slave, UART
-
5x 16-bit motor PWM timers
-
2x 16-bit timers
-
10-bit ADC with < 6 µs conversion time with multiple channels and different ADC references
-
Differential current sense amplifier
-
Temperature sensor, over-temperature detection
-
Over-current detection, over-voltage and under-voltage protection
-
-
Voltage regulators
-
Internal voltage regulators, directly powered from 12V battery supply
-
Operating voltage Vs = 5.5V to 20V
-
Operation down to 3.5V with reduced analog characteristics, down to 3V without losing register content, down to 1.5V with intact RAM memory
-
Low standby current consumption of typ 25µA (max 50 µA) in sleep mode
-
Wake-up possible via LIN, external pins or internal wake-up timer
-
-
Bus interface
-
LIN 2.x/SAE J2602 and ISO17987-4 compliant LIN slave
-
-
Automotive AEC-Q100 qualified
-
Designed for safety applications according to ASIL-B (ISO 26262)
-
Maximum IC temperature (with validated mission profile) Tj = 175°C
Documents and tools
Product abstracts(s)
Product flyer(s)
Selection guide(s)
Recommended third parties
Related tech talks
Videos
Embedded LIN drivers and pre-drivers for stepper, DC and BLDC motors
Discover Melexis 3rd generation of embedded motor drivers for DC, BLDC and Stepper motors. It includes LIN drivers (<10 W) and LIN pre-drivers (<2000 W).
