TLE4729G Infineon

2-Phase Stepper-Motor Driver TLE4729G Bipolar-IC Features 2 0.7 amp. full bridge outputs Integrated driver, control logic and current control (chopper) Very low current consumption in inhibit mode Fast free-wheeling diodes Max. supply voltage 45 V Output stages are free of crossover current PG-DSO-24-16 Offset-phase turn-ON of output stages All outputs short-circuit proof Error-flag for overload, open load, over-temperature SMD package PG-DSO-24-16 Green Product (RoHS compliant) AEC Qualified Type Package TLE4729G PG-DSO-24-16 (SMD) Functional Description TLE4729G is a bipolar, monolithic IC for driving bipolar stepper motors, DC motors and other inductive loads that operate by constant current. It is fully pin and function compatible except the current programming is inverse to the TLE4728G with an additional inhibit feature. The control logic and power output stages for two bipolar windings are integrated on a single chip which permits switched current control of motors with 0.7 A per phase at operating voltages up to 16 V. The direction and value of current are programmable for each phase via separate control inputs. In the case of low at all four current program inputs the device is switched to inhibit mode automatically. A common oscillator generates the timing for the current control and turn-on with phase offset of the two output stages. The two output stages in full-bridge configuration include fast integrated freewheeling diodes and are free of crossover current. The device can be driven directly by a microprocessor in several modes by programming phase direction and current control of each bridge independently. Data Sheet 1 V1.2, 2008-03-18TLE 4729 G With the two error outputs the TLE4729G signals malfunction of the device. Setting the control inputs low resets the error flag and by reactivating the bridges one by one the location of the error can be found. Pin Configuration (top view) TLE4729G 124 10 20 2 23 21 11 Phase 1 3 22 Phase 2 OSC 4 21 Error 1 GND 5 20 GND GND 6 19 GND GND 7 18 GND GND 8 17 GND Q11 9 16 Q21 R R 10 15 1 2 +V 11 14 Error 2 S Q12 12 13 Q22 AEP02195 Figure 1 Data Sheet 2 V1.2, 2008-03-18