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DRV10866EVM: 3-Ph Brushless DC (BLDC), 820mA, 2 ~ 5.5V

Summary

The DRV10866EVM is a complete solution for evaluating the DRV10866 5-V, three-phase sensorless BLDC motor driver. It includes a TLC555 timer configured to supply a PWM to the DRV10866, a potentiometer to adjust the speed of the motor by varying the duty cycle of the PWM, a jumper on the FG pin to allow the use of an external pull up resistor, and a jumper on the FGS pin to set ½ or normal frequency output on the FG pin. Power can be provided with the included micro-USB cable for 5 V or externally provided, up to 5.5 V, through the power header. The PWN, FG, and GND signals are all brought out to surface mounted test points.

The overcurrent threshold setup pin sets the current limit for the device and is connected to a 3.8-kΩ resistor (R6) on the DRV10866EVM. This sets the current limit at 820 mA for the DRV10866. This resistor can be replaced and a new current limit set using the equation seen below. Please see the datasheet for the DRV10866 for more information on the overcurrent threshold setup pin.

Specifications

Manufacturer Texas Instruments
Category Motor Control
Eval Board Part Number 296-37493-ND
Eval Board Supplier Texas Instruments
Eval Board Normally In Stock
Voltage In 2 ~ 5.5 V
Number of Motors and Type 1, 3-Ph BLDC, Sensorless
Power / Current Out 820 mA
Features Current Limit (Adj. or Fixed)
Locked Rotor Protection
Over Current Protection
Over Voltage Protection
Thermal Protection
Under Voltage Protection, Brown-Out
Component Count + Extras 18 + 8
Application / Target Market Computers
Lighting: LED Commercial Lighting
Portable Devices
Set-Top Boxes
Design Author Texas Instruments
Main I.C. Base Part DRV10866
Date Created By Author
Date Added To Library 2018-11

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