F2867

DESCRIPTION 

The UTC F2867 is a single-phase bipolar variable speed driving 

motor pre-driver that works with external PWM signal. A highly

efficient, highly silent and low power consumption motor driver 

circuit can be achieved with a few external parts. This product is 

optimal for driving large scale fan motors requiring large air flow 

and large current such as servers and consumer appliances. 

FEATURES 

* Pre-driver for single-phase full-wave drive 

Low-saturation drive using external PMOS-NMOS enables 

high-efficiency low power-consumption drive. 

* External PWM input enabling variable speed control 

Separately-excited upper direct PWM (f=30kHz) control method 

enabling highly silent speed control. 

* Current limiting circuit incorporated 

Chopper type current limit at start. 

* Reactive current cut circuit incorporated 

Reactive current before phase change is cut to enable silent and 

low power-consumption drive. 

* Minimum speed setting pin 

Minimum speed can be set by set with external resistor. 

* Soft start setting pin 

* Lock protection and automatic reset functions incorporated 

* FG (rotation speed detection) output 

* Thermal shutdown circuit incorporated 

规格书F2867