Three-Phase Full-Wave Fan Motor Driver - BD67173NUX | ROHM Semiconductor - ROHM Co., Ltd.
Three-Phase Full-Wave Fan Motor Driver - BD67173NUX
BD67173NUX is a three-phase sensorless fan motor driver used to cool off notebook PCs. It is controlled by a variable speed provided through the PWM input signal. Its feature is sensorless drive which doesn’t require a hall device as a location detection sensor and motor downsizing can be achieved by limiting the number of external components as much as possible. Furthermore, introducing a direct PWM soft switched driving mechanism achieves silent operations and low vibrations.
Power Supply Voltage (Max.)[V]
Power Supply Voltage (Min.)[V]
Speed Control Input
For Fan Motor
Operating Temperature (Min.)[°C]
Operating Temperature (Max.)[°C]
- Speed controllable by PWM input signal
- Sensorless drive
- Soft switched drive Quick start
- Power save function
- Internal RNF resistance
- Quick start function