LS7362

LSI/CSI UL ® LS7362 (631) 271-0400 FAX (631) 271-0405 September 1999 LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 A3800 BRUSHLESS DC MOTOR COMMUTATOR/CONTROLLER FEATURES: Speed Control by Pulse Width Modulation (PWM) of low-side drivers only. Open or closed loop motor speed control. +5 to +28 Volt operation (Vss - VDD). Externally selectable input to output code for 60°, 120°, 240°, or 300° electrical sensor spacing. Three or four phase operation. Analog Speed control. Forward/Reverse control. Output Enable control. Positive Static Braking. Overcurrent Sensing. Six outputs drive switching bridge directly. LS7362 (DIP); LS7362-S (SOIC); LS7362-TS (TSSOP) - See Connection Diagram CONNECTION DIAGRAM - TOP VIEW STANDARD 20 PIN PLASTIC DIP CS1 OUT 1 OUT 2 OUT 3 COMMON OUT 4 1 2 3 20 19 18 CS2 FORWARD/REVERSE V DD (-V) LSI 4 17 S3 S2 S1 OSCILLATOR LS7362 5 6 16 15 14 OUT 5 OUT 6 BRAKE 7 8 9 13 12 11 V TRIP OVERCURRENT SENSE V SS (+V) DESCRIPTION: The LS7362 is a monolithic, ion implanted MOS circuit designed to generate the signals necessary to control a three phase or four phase brushless DC motor. It is the basic building block of a brushless DC motor controller. The circuit responds to changes at the SENSE inputs, originating at the motor position sensors, to provide electronic commutation of the motor windings. Pulse width modulation (PWM) of low-side drivers for motor speed control is accomplished through ei...