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DRV10963 Datasheet(PDF) 7 Page - Texas Instruments

Part No. DRV10963
Description  DRV10963 5-V, Three-Phase, Sensorless BLDC Motor Driver
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

DRV10963 Datasheet(HTML) 7 Page - Texas Instruments

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7 Detailed Description
7.1 Overview
The DRV10963 device is a three phase sensor-less motor driver with integrated power MOSFETs. It is
specifically designed for high efficiency, low noise and low external component count motor drive applications.
The proprietary sensor-less window-less 180° sinusoidal control scheme provides ultra-quiet motor operation by
keeping electrically induced torque ripple small.
Upon start-up, the DRV10963 device will spin the motor in the direction indicated by the FR input pin. The
DRV10963 device will operate a three phase BLDC motor using a sinusoidal control scheme. The magnitude of
the applied sinusoidal phase voltages is determined by the duty cycle of the PWM pin. As the motor spins, the
DRV10963 device provides the speed information at the FG pin.
The DRV10963 device contains an intelligent lock detect function. In the case where the motor is stalled by an
external force, the system will detect the lock condition and will take steps to protect itself as well as the motor.
The operation of the lock detect circuit is described in detail in Lock Detection.
The DRV10963 device also contains several internal protection circuits such as overcurrent protection,
overvoltage protection, undervoltage protection, and overtemperature protection.
7.2 Functional Block Diagram
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