Weltrend | Products

BLDC motor drivers and controllers

WT7062

The WT7062 is a 3-phase full-wave driver for brushless sensorless DC motors. It features 150° square drive, high torque output, and silent drive. Rotation speed can be adjusted through either power supply modulation or pulse-width-modulation (using the PWM digital input pin).Due to the compact packaging and minimum bill-of-material (power transistors incorporated, no Hall sensor, no external tuning), WT7062 is the best suited for low-cost fan application which is requiring high efficiency and low acoustic noise, such as notebook cooling fan.Frequency generator output is also included (FG). The WT7062 driver includes a lock-up protection mode, which turns-off the output current when the motor is under lock condition, and an automatic recovery that enables the fan to release when the lock condition is removed. Thermal-shutdown protection is also included. They are available in a compact thermally-enhanced MSOP-10 & DFN-10 package.

Features

- Position sensorless BLDC drivers (no Hall sensor required).
- 150° square drive, for high efficiency and low acoustic noise.
- Support 2.0V to 5.5V power supplies.
- Speed control through by PAM or PWM.
- Built-in frequency generator (FG output signal).
- Built-in lockup protection and automatic recovery circuit (external capacitors not necessary).
- Built-in thermal shutdown protection.
- MSOP-10 & DFN-10 package.
- No external tuning required.

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