subscribe
 

Sensorless three-phase motor controller

24th June 2016

Posted By Paul Boughton


ON Semiconductor has further expanded its portfolio of motor controllers with the introduction of the LV8907UW.

Supporting an operating voltage range from 5.5 to 20 volts (4.5 to 40V transient), this high performance and feature-packed device enables streamlined solutions for driving three-phase brushless motors.

The LV8907UW integrates gate drivers for six N-channel MOSFETs, and a dual-stage charge pump for 100% duty-cycle operation. In its lowest cost configuration the IC can operate without an external microcontroller.

The device requires no programming, as key parameters and functions - such as startup and speed setting - can be configured via SPI interface and stored in embedded non-volatile (OTP) memory. Open-loop and closed-loop speed control are possible.

For more complex applications the LV8907UW can also support a small microcontroller with its integrated linear regulator (3.3V or 5V, 50mA), a local interconnect network (LIN) transceiver for automotive connectivity, and a watchdog timer.

AEC-Q100 qualified, the LV8907UW’s operational temperature range reaches up to 175°C, thereby ensuring reliable operation in challenging automotive environments. Integrated protection mechanisms include over-current, over-voltage, short circuit, under-voltage, and over-temperature. The features of the device make it ideal for use in automotive water pumps, oil pumps, fuel pumps, HVAC systems, radiator fans, and headlamp cooling units.







Subscribe

Subscribe



Newsbrief

twitter facebook linkedin © Setform Limited