Smart LIN pre-driver for DC and BLDC motors <2000W
MLX81346 Melexis
The MLX81346 is a gen-3 LIN pre-driver for 12 V, 24 V and 48 V DC & BLDC motors targeting automotive mechatronic applications up to 1000 W (12 V) or up to 2000 W (48 V). It benefits from an extended memory of 90 KB.
Top features
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LIN Motor driver
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3x PreDriver for DC or BLDC motor
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Up to 200nC NFETs (12 - 48 V supply)
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0.7 Apk typ. charge current
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1.5 Apk typ. discharge current
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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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Programmable digital watch-dog
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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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20 KB ROM
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4 KB RAM
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576 B EEPROM
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MLX4 memories:
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6 KB ROM
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512B RAM
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-
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Fast end-of-line programming via LIN pin (64 KB Flash in < 4sec)
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Pin-compatible Pre-driver family QFN32
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MLX81346: 90KB Flash+ROM
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Periphery
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Configurable RC-clock 12...32MHz
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12x general purpose IO's, digital, analog, 3x high-voltage IO's, 2x UART, SPI, I2C-slave
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2x high-side supply <50mA
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5x 16-bit motor PWM timers
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2x 16-bit timers
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12-bit ADC with < 1.2μs conversion time with 64 channels
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Differential current sense amplifier with 8-bit programmable overcurrent
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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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IC operating motor voltage VSM = 5.5V to 60V
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Operating voltage VS = 5.5V to 32V* (*operating voltage up to 36V limited to 24h over lifetime)
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Internal voltage regulators, directly powered from VS supply
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Operation down to 3.5V with reduced analog characteristics, down to 3.0V without losing register content, down to 1.6V with intact RAM memory
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Low standby current consumption of typ. 25μA 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)
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Maximum IC temperature (with validated mission profile) Tj = 175°C
Smart LIN pre-driver for DC and BLDC motors <2000W - MLX81346
Product description
The MLX81346 is a gen-3 LIN pre-driver for 12 V, 24 V and 48 V motors targeting automotive mechatronic applications up to 1000 W (12 V) or up to 2000 W (48 V). It benefits from an extended memory of 90 KB.
This all-in-one LIN pre-driver enables small-footprint applications to control DC and BLDC motors, and support sensored or sensorless field-oriented control (FOC) algorithms.
The MLX81346 pre-driver addresses multiple mechatronic applications:
- 12V-48V DC/BLDC Engine Cooling Fans, Pumps, Compressors
- 12V-48V DC/BLDC Positioning Actuators, including Robotics
- 36V-48V BLDC e-bikes, e-scooters
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
-
LIN Motor driver
-
3x PreDriver for DC or BLDC motor
-
Up to 200nC NFETs (12 - 48 V supply)
-
0.7 Apk typ. charge current
-
1.5 Apk typ. discharge current
-
-
charge-pump for top-NFETs
-
VDS protection for all NFETs
-
-
Microcontroller
-
MLX16-FX, application CPU
-
MLX4, communication CPU
-
Programmable digital watch-dog
-
Interrupt controller
-
Common purpose timer
-
-
Memories split per CPU
-
MLX16-FX memories:
-
64 KB Flash with ECC
-
20 KB ROM
-
4 KB RAM
-
576 B EEPROM
-
-
MLX4 memories:
-
6 KB ROM
-
512B RAM
-
-
-
Fast end-of-line programming via LIN pin (64 KB Flash in < 4sec)
-
Pin-compatible Pre-driver family QFN32
-
MLX81346: 90KB Flash+ROM
-
-
Periphery
-
Configurable RC-clock 12...32MHz
-
12x general purpose IO's, digital, analog, 3x high-voltage IO's, 2x UART, SPI, I2C-slave
-
2x high-side supply <50mA
-
5x 16-bit motor PWM timers
-
2x 16-bit timers
-
12-bit ADC with < 1.2μs conversion time with 64 channels
-
Differential current sense amplifier with 8-bit programmable overcurrent
-
Temperature sensor, over-temperature detection
-
Over-current detection, over-voltage and under-voltage protection
-
-
Voltage regulators
-
IC operating motor voltage VSM = 5.5V to 60V
-
Operating voltage VS = 5.5V to 32V* (*operating voltage up to 36V limited to 24h over lifetime)
-
Internal voltage regulators, directly powered from VS supply
-
Operation down to 3.5V with reduced analog characteristics, down to 3.0V without losing register content, down to 1.6V with intact RAM memory
-
Low standby current consumption of typ. 25μA 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).
