Overview: DATA SHEET www.onsemi.com Sinusoidal Sensorless Three-Phase Brushless DC Motor Controller and Predriver
LV8961HUW
Overview The LV8961 is a high performance sinusoidal sensorless
three−phase BLDC motor controller with predrivers for automotive applications. An integrated two−stage charge pump provides gate current for a wide range of ultra low Rdson NFETs. The device offers a rich set of system protection and diagnostic functions such as overcurrent, overvoltage, short−circuit, undervoltage, overtemperature and many more. It supports open−loop as well as closed−loop speed control based on Back ElectroMotive Force (BEMF) observation. The user configurable startup, speed setting and proportional/integral (PI) control coefficients, make LV8961 suitable for a wide range of motor− and load combinations. With a built−in linear regulator for powering an external circuit and a watchdog timer, the LV8961 offers a very small system solution. A one−time programmable (OTP) non−volatile memory in addition to RAM and an SPI interface is provided for parameter setting and monitoring of the system status. With the operating junction temperature tolerance up to 175°C, the LV8961 is an ideal solution for stand−alone automotive and industrial BLDC motor control systems.
