A2927SEB

Data Sheet 29319.23 2927 DUAL FULL-BRIDGE PWM MOTOR DRIVER 2927 PRELIMINARY INFORMATION (Subject to change without notice) September 16, 1997 DUAL FULL-BRIDGE PWM MOTOR DRIVER VCC 40 LOGIC SUPPLY The A2927SEB motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two dc motors. Both bridges are capable of sustaining 50 V and include internal pulse-width modulation (PWM) control of the output current to 1.5 A. θ1 43 PHASE1 EN1 42 ENABLE 1 41 RC1 44 VREF 1 2 I10 1 I11 3 OUT 1B 4 SENSE 1 E 1 6 OUT 1A 5 GND 7 39 GND For PWM current control, the maximum output current is determined OUT 2A 18 E2 19 SENSE 2 20 OUT 2B 21 LOAD SUPPLY 22 VBB I20 23 I21 24 V REF 2 25 PHASE 2 26 θ2 ENABLE 2 27 EN2 RC 2 28 8 9 10 T11 12 C13 U14 15 D Y16 PROE ONLGND 17 1 2 PWM 1 PWM 2 38 37 36 35 34 33 32 31 30 29 GND Dwg. PP-021 by the user’s selection of a reference voltage and sensing resistor. Two logic-level inputs select output cur...