Click to expand full text
2927 DUAL FULL-BRIDGE PWM MOTOR DRIVER
PRELIMINARY INFORMATION (Subject to change without notice) September 16, 1997
2927
DUAL FULL-BRIDGE PWM MOTOR DRIVER
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.
39 GND
Data Sheet 29319.23
SENSE 1
PHASE 1
VREF 1
ENABLE 1
43
42
41
RC1
E
44
GND
EN1
VCC
θ1
40
6
5
4
3
2
1
LOGIC SUPPLY
OUT 1A
OUT 1B
I10
I11
1
7 8 9 10 11 12 13 14 15 16 17
VBB
PWM 1
38 37
1
36 35 34 33
For PWM current control, the maximum output current is determined by the user’s selection of a reference voltage and sensing resistor.