UC1625 - Texas Instruments

UC1625 Brushless DC Motor Controller

The UC3625 family of motorcontroller devices integrate most of the functions required for highperformance brushless dc-motor control into one package. When coupled with external power MOSFETs or Darlingtons, these devices perform fixed-frequency PWM motor control in either voltage or current mode while implementing closed-loop speed control and braking with .

Features

1
• Drives Power MOSFETs or Power Darlingtons Directly
• 50-V Open Collector High-Side Drivers
• Latched Soft Start
• High-Speed Current-Sense Amplifier with Ideal Diode
• Pulse-by-Pulse and Average Current Sensing
• Over-Voltage and Under-Voltage Protection
• Direction Latch for Safe Direction Reversal
• Tachometer
• Trimmed Reference Sources 30 mA
• Programmable Cross-Conduction Protection
• Two-Quadrant and Four-Quadrant Operation DESCRIPTION The UC3625 family of motorcontroller devices integrate most of the functions required for highperformance brushless dc-motor control into one package.