Техническая Спецификация для Microchip Technology ADM00308
Highly Integrated 3-Phase BLDC Sinusoidal Sensorless
Motor Fan Drivers and Dual Full-Bridge Drivers
More Cost Effective and Faster Time to Market
3-Phase BLDC Sinusoidal Motor Drivers
The MTD6501C/D/2B/5 product family 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, the MTD6501C/D/2B/5 are
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 MTD6501C/D/2B/5 product family extremely cost
efficient in fan applications.
For example, the CPU cooling fans in notebook computers
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 MTD6501C/D/2B/5 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.
MTD6505 Application CIrcuit Diagram
Device
Vmax
Fsw
Package
Features
MTD6501C
15.3V
20 kHz
Thermally enhanced SOIC-8
FG, PWM, Lockup recovery
MTD6501D
15.3V
20 kHz
MSOP-10
FG, PWM, Boost, Lockup recovery
MTD6501G
15.3V
23 kHz
Thermally enhanced SOIC-8
FG, PWM, Lockup recovery
MTD6502B
5.5V
30 kHz
TDFN-10
FG, PWM, DIR, Lockup recovery
MTD6505
5.5V
30 kHz
UDFN-10
FG, PWM, DIR, Lockup recovery, programmable
BEMF coefficient
FG
PROG
V
BIAS
OUT1
OUT2
PWM
DIR
V
DD
OUT3
GND
C1
C2
MTD6505
V
DD
Features
■
180° sinusoidal drive, for high efficiency and
low acoustic noise
■
Position sensorless BLDC Motor Drivers
(no hall-effect sensor required)
■
Integrated power transistors
■
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
Applications
■
3-phase BLDC motors
■
3-phase BLDC fans
■
Pumps; e.g. water pumps