TLE4728G Datasheet | Infineon

Overview Features - 2 × 0.7 amp. full bridge outputs - Integrated driver, control logic and current control (chopper) - Fast free-wheeling diodes - Max. supply voltage 45 V - Output stages are free of crossover current - Offset-phase turn-ON of output stages - All outputs short-circuit proof - Error-flag for overload, open load, overtemperature - SMD package P-DSO-24-3 Bipolar-IC Type TLE 4728 G Ordering Code Q67006-A9077 Package P-DSO-24-9 Description TLE 4728 G is a bipolar, monolithic IC for driving bipolar stepper motors, DC motors and other inductive loads that operate by constant current. 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. A mon 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 free wheeling 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. With the two error outputs the TLE 4728 G signals malfunction of the device. Setting the control inputs high resets the error flag and by reactivating the bridges one by one the location of the error can be found. Data Sheet 1 2004-03-01 TLE 4728 G TLE 4728 G Ι 10 Ι 11 Phase 1 OSC GND GND GND GND Q11 R1 + VS Q12 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 IEP01211 Ι 20 Ι 21 Phase 2 Error 1 GND GND GND GND Q21 R2 Error 2 Q22 Figure 1 Pin Configuration (top view) Data Sheet 2 2004-03-01 TLE 4728 G Pin Definitions and Functions Pin No. Function 1, 2, 23, 24 Digital control inputs IX0, IX1 for the magnitude of the current of the particular phase. Iset =...