Motor driver is first with resistor programmable, sensorless sinusoidal architecture
1 min read
Microchip has launched what it claims to be the industry's first and only standalone, resistor programmable driver that enables the selection of multiple back emf coefficient ranges.
According to Microchip, the MTD6500 is low cost, flexible and enables engineers to design for a variety of three phase BLDC fan characteristics with a single device. The driver comes in a 3x3mm UDFN package with a 0.5mm thickness for space constrained applications.
The device includes a 180° sinusoidal drive designed to enable high energy efficiency and quiet operation with low acoustic noise and mechanical vibration. Because it is a sensorless driver, it eliminates the need for an external hall effect sensor, while it provides a number of on chip protection features to preserve the motor's life and avoid conditions such as thermal shutdown, over current limiting and lock up protection.
Microchip has also unveiled the MTD6505 three phase BLDC sensorless fan controller demonstration board (ADM00345) which integrates a three phase BLDC fan and three MTD6505 plug in modules. Additionally, a free GUI is available for download.