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.

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

Dual Full-Bridge Drivers
The MTS2916A/MTS62C19A motor drivers are integrated circuit to drive both windings of a bipolar stepper motor or bi-directionally control of two DC motors. The two output bridges can sustain 40V and deliver up to 750 mA of continuous current each. The maximum output current, controlled by a PWM circuit, is determined by the user’s selection of a reference voltage, a sensing resistor and two logic inputs. The outputs have been optimized for a low output saturation voltage drop.

FEATUREs
■ Load voltage supply range: 10V to 40V
■ Output current up to 750 mA (each bridge)
■ Internal fi xed Toff time PWM current control
■ Built-in protection diodes
■ Internal thermal shutdown
■ Under-voltage lockout
■ LS-TTL compatible logic inputs with pull-up resistors
■ Low Ron output resistance
■ Low quiescent current
■ Industry standard footprint