Onsemi LV8907UW | Demoboard LV8907UWSLDGEVK

Description

The LV8907 is a high performance, AEC−Q100 qualified,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 voltage for a wide range of 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 a built−in linear regulator for powering external circuits, a watchdog timer, and a LIN (Local Interconnect Network) transceiver, the LV8907 offers a very small system solution.The LV8907 stores system parameters in embedded one−timeprogrammable (OTP) non−volatile memory in addition to RAMsystem memory. An SPI interface is provided for parameter setting and monitoring the system status. 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 for stand−alone BLDC motor control systems.

Features

• AEC−Q100 Qualified and PPAP Capable
• Operating Junction Temperature Up to 175°C
• Operating Voltage Range from 5.5 V to 20 V with Tolerance from 4.5 V to 40 V
• Embedded Proprietary Sensor−less Trapezoidal andPseudo−sinusoidal Commutation
• Supports Open−loop as well as Closed−loop Speed Control
• Integrated Gate Drivers for Driving Six N−MOSFETs
• Two−stage Charge Pump for Continuous 100% Duty CycleOperation
• 5 V /3.3 V Regulator, LIN Transceiver and Watchdog TimerApplications Using an External Microcontroller.
• Configurable Speed Settings and PI Control Coefficients
• 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

Typical applications

• Automotive Pumps (Fuel, Oil, and Hydraulic)
• White Goods and Industrial BLDC Motor Control
• Fans (HVAC, Radiator, Battery Cooling,LED Headlight Cooling)

More information

• Datasheet
• IC product information