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MTD6505

Microchip
Part Number MTD6505
Manufacturer Microchip
Description 3-Phase Sinusoidal Sensorless Brushless Motor Driver
Published Apr 12, 2012
Detailed Description MTD6505 3-Phase Sinusoidal Sensorless Brushless Motor Driver Features • 180° Sinusoidal Drive for High Efficiency and L...
Datasheet PDF File MTD6505 PDF File

MTD6505
MTD6505

Overview
MTD6505 3-Phase Sinusoidal Sensorless Brushless Motor Driver Features • 180° Sinusoidal Drive for High Efficiency and Low Acoustic Noise • Position Sensorless BLDC Drivers (no Hall Effect Sensor required) • Integrated Power Transistors • Supports 2V to 5.
5V Power Supplies • Programming Resistor (RPROG) Settings to Fit Motor Constant (KM) Range from 3.
25 mV/Hz to 52 mV/Hz • Direction Control: - Forward direction: connect DIR pin to GND or leave floating - Reverse direction: connect DIR pin to VBIAS or 3V • Speed Control through Power Supply Modulation (PSM) and/or Pulse-Width Modulation (PWM) • Built-in Frequency Generator (FG Output Signal) • Built-in Lockup Protection and Automatic Recovery Circuit • Built-in Overcurrent Limitation • Built-in Thermal Shutdown Protection • Built-in Overvoltage Protection • No External Tuning Required • Available Package: 10-Lead 3mm x 3mm UDFN Applications • Notebook CPU Cooling Fans • 5V 3-Phase BLDC Description The MTD6505 device is a 3-phase, full-wave sensorless driver for brushless DC (BLDC) motors.
It features 180° sinusoidal drive, high-torque output and silent drive.
With the adaptive features, parameters and wide range of power supplies (2V to 5.
5V), the MTD6505 is intended to cover a broad range of motor characteristics, while requiring minimum external components.
Speed control can be achieved through either PSM or PWM.
The compact packaging and the minimal bill of materials make the MTD6505 device extremely cost-efficient in fan applications.
For example, the CPU cooling fans in notebook computers require designs that provide low acoustic noise, low mechanical vibration, and are highly efficient.
The frequency generator (FG) output enables precision speed control in closed-loop applications.
The MTD6505 device includes Lockup Protection mode to turn off the output current when the motor is in a lock condition, with an automatic recovery feature to restart the fan when the lock condition is removed.
Motor overcurrent li...


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