The LV8907 is a high performance, sensor-less three-phase BLDC motor controller with integrated gate drivers for driving external N-MOSFETs. An on-chip two-stage charge pump provides required gate current for a wide range of ultra low RDS(ON) type external N-MOSFETs. The device offers a rich set of system protection and diagnostic functions such as over-current, over-voltage, short-circuit, under-voltage, over-temperature and many more. It supports open-loop as well as closed-loop speed control with user configurable startup, speed setting and proportional/integral (PI) control coefficients, making it suitable for a wide range of motor and load combinations. With an in-built linear regulator for powering an external circuit, a watchdog timer and a Local Interconnect Network (LIN) transceiver, the LV8907 offers the smallest system solution footprint. An SPI interface is provided for parameter setting and monitoring the system health. With the operating junction temperature tolerance up to 175°C and electrically LIN compatible control signals (PWM and Enable), the LV8907 is an ideal solution stand-alone automotive BLDC motor control systems.
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● Operating junction temperature up to 175°C
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● Automobile application applicable
● Operating voltage range from 5.5 V to 20 V with tolerance from 4.5 V to 40 V
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● Wide capability for various motors
● Embedded proprietary sensor-less commutation control
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● BOM cost reduction
● In-built LIN transciever and Watchdog timer
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● Connectivity with automotive network system
● SPI interface for real-time parameterization and diagnostic
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● Optional capability for micro-processer
● Various system protection features including
●Shoot through protection using configurable dead-time
●Drain-source short detection
●Cycle-by-cycle current limit and over-current shutdown
●Over-voltage and under-voltage shutdown
●Over-temperature warning and shutdown
●Input PWM fault detection
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● Building high reliable and robust system
● Integrated 5 V/3.3 V regulator output for external circuit
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● Integrated gate drivers for driving six N-MOSFETs
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● Two-stage charge pump for continuous 100% duty-cycle operation
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● Supports open-loop as well as closed-loop speed control
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● Configurable speed setting and PI control coefficients
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