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EUM6862

Eutech Microelectronics
Part Number EUM6862
Manufacturer Eutech Microelectronics
Description 24V PWM Fan Motor Driver
Published Jul 18, 2014
Detailed Description EUM6862/A/B 24V PWM Fan Motor Driver DESCRIPTION EUM6862/A/B is a fan motor driver for the single coil brushless DC moto...
Datasheet PDF File EUM6862 PDF File

EUM6862
EUM6862


Overview
EUM6862/A/B 24V PWM Fan Motor Driver DESCRIPTION EUM6862/A/B is a fan motor driver for the single coil brushless DC motor.
With its high efficient direct PWM control mode, EUM6862/A/B controls the speed of brushless DC motor with a built in HALL IC interface.
EUM6862/A/B is suitable to drive variable speed motors for personal computer’s power supply radiation fans and CPU coolers.
EUM6862/A/B integrates PWM fan speed control, minimum speed mode, soft start, fan tachometer, lock protection, auto restart and Hall Bias functions.
PWM mode controls fan speed in low noise and low vibration ways by adjusting RCTL voltage.
EUM6862/A/B can set minimum fan speed by presetting RMIN voltage.
With soft start function, EUM6862/A/B can drive motor from slow speed to fast speed in a settable time by setting the external capacitor between SS and GND.
If a fan motor is stalled by the external force or obstacles, overdrive current may incur coil overheat and burning.
To prevent motor from overheating, the lock protection circuit shuts down the internal power devices for a few seconds after the motor lock is detected.
Then the auto restart circuit resumes to power up the internal power devices.
If the lock persists, EUM6862/A/B shuts off power devices for a few seconds.
The lock protection delay time is externally programmable by a capacitor.
EUM6862 has built in motor rotation speed feedback (FG) output, motor rotation detection (RD) output and Hall sensor bias output.
FEATURES Built in 24V Full-wave Motor Driver for Fan Motor Built in Kickback Voltage Protection, No Zener Diode Need External Programmable Soft Start and Soft Restart Function Wide Input Range 3V~28V PWM Fan Speed Control Programmable Minimum Fan Speed Built in Soft Switching Function Built in Hall Bias Lock Protection and Auto Restart Fan Rotation Speed Feedback FG Output (EUM6862/B) Fan Rotation Detection RD Output (EUM6862/A) Thermal Shutdown Protection Available in TSSOP-16 and TDFN-14 Packages RoHS Compliant and ...


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