General Description

BM64070MUV is the pre-driver IC of sine wave drive

for three-phase brushless motor driver that supports

48 V power supply controlling the motor driver

constructed in external FETs. The sensor-less drive

that the hall devices for the position sensing are

unnecessary is adopted. It has a speed feedback

control function, and controls output PWM Duty by

adjusting the rotational frequency characteristics for

the input PWM signal and the rotational frequency

affected from motor.

Features

 Speed Control on PWM Duty Input

 External Output FET Nch+Nch

 Built-in Boost Voltage Circuit

 Sensor-less Sine Wave Drive

 Automatic Lead Angle Control

 Dead Time Setting

 Current Limit Function

 Power Save Function

 Direction of Rotation Setting

 Short Brake Control

 Speed Feedback Control

 Able to Set Motor Rotation Speed Table and

Various Parameters with the built-in OTP

 Built-in Several Protection (Motor Lock Protection

[MLP], High Speed Rotation Protection, Over

Voltage Lock Out [OVLO], Under Voltage Lock

Out [UVLO], Thermal Shutdown [TSD], Over

Current Protection [OCP])

Application

 Fan Motor

 Other General Consumer Equipment