DESCRIPTION

The OM9371 is one of a series of versatile, integrated three-phase brushless DC motor controller/driver subsystems housed in a 43 pin power flatpack. The OM9371 is best used as a two quadrant speed controller for controlling/driving fans, pumps, and motors in applications which require small size. Many integral control features provide the user much flexibility in adapting the OM9371 to specific system requirements.

FEATURES

• Fully integrated 3-Phase Brushless DC Motor Control Subsystem

includes power stage, non-isolated driver stage, and controller stage

• MOSFET Output Stage

• 25A Average Phase Current with 48V Maximum Bus Voltage

• Internal Precision Current Sense Resistor (6W max. dissipation)

• Speed and Direction Control of Motor

• Brake Input for Dynamic Braking of Motor

• Overvoltage/Coast Input for Shutdown of All Power Switches

• Soft Start for Safe Motor Starting

• Unique Hermetic or Plastic Ring Frame Power Flatpacks

   • Hermetic (3.10" x 2.10" x 0.385")

   • Plastic Ring Frame (4.13" x 2.00" x 0.49")

APPLICATIONS

• Fans and Pumps

• Hoists

• Actuator Systems