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MTD6508

3-Phase Brushless DC Sinusoidal Sensorless Fan Motor Driver

Status: In Production

Features:

  • Output PWM Slew Rate Control Programmable with an External Resistor for Start-up (Adjustable version) 
  • Phase Target Selection for Regulation (Adjustable Version)
  • Start-up Strength Selection (Adjustable Version)
  • 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) setting 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
  • 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
  • No External Tuning Required
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MTD6508 device is a 3-phase full-wave sensorless driver for brushless DC (BLDC) motors. The MTD6508 offers start-up output slew rate and PWM duty cycle control that allow designer to balance between acoustic performance and reliability. With the adaptive features, parameters and wide range of power-supplies (2V to 5.5V), the MTD6508 is intended to cover a broad range of motor characteristics, while requiring minimum external components. Speed control can be achieved through either power supply modulation (PSM) or pulse-width modulation (PWM). The compact packaging and the minimal bill-of-material make the MTD6508 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 MTD6508 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 limitation and thermal shutdown protection are included for safety enhanced operations.

Additional Features
    • Output PWM Slew Rate Control Programmable with an External Resistor for Start-up (Adjustable version) 
    • Phase Target Selection for Regulation (Adjustable Version)
    • Start-up Strength Selection (Adjustable Version)
    • 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) setting 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
    • 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
    • No External Tuning Required
Parametrics
Name
Value
Operating Voltage Range (V)
2 to 5.5
Output
MOSFET
Max. Continuous Current per output
0.75
Motor Control Methods
PWM,PAM
Motor Speed Output
Frequency Generator
Shutdown Protection
Short Circuit,Overtemperature,Under Voltage
Ambient Temperature Range (°C)
-40 to +125
Packages
10/UDFN, 16/UQFN

Documents

Jump to:

Data Sheet

04/30/2015
1620KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MTD6508 5V 3-P Motor Driver Daughter Board
MTD6508 5V 3-P Motor Driver Daughter Board ( ADM00631 )

The MTD6508 Daughter Board is a small board with the minimal required components to operate with the MTD6508 device.
The MTD6508 Daughter Board has been designed to be used with the ADM00633 motherboard, but can also be used as a stand-alone board using its connectors.

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MTD6508 5V 3-P Motor Driver Mother Board
MTD6508 5V 3-P Motor Driver Mother Board ( ADM00633 )

The MTD6508 Mother Board allows control of the MTD6508 3-Phase BLDC Sensorless
Fan Controller Daughter Board (ADM00631)
in two ways:
• Directly, by using the keys on the board
• By connecting the MTD6508 Mother Board to a computer via a USB port and controlling
and monitoring the MTD6508 3-Phase BLDC Sensorless Fan Controller
Demonstration Mother...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MTD6508-ADJE/JQ
0.022500
0.065934
16
UQFN
4x4x0.5mm
Matte Tin
e3
MTD6508T-ADJE/JQ
0.022500
0.181818
16
UQFN
4x4x0.5mm
Matte Tin
e3
MTD6508-E/NA
0.011800
0.033333
10
UDFN
3x3x0.5mm
Matte Tin
e3
MTD6508T-E/NA
0.011800
0.227879
10
UDFN
3x3x0.5mm
Matte Tin
e3
MTD6508T-FG2E/NA
0.011800
0.227879
10
UDFN
3x3x0.5mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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