TCA3727G Infineon

Data Sheet, Rev. 2.2, January 2008 TCA3727G 2-phase Stepper Motor Driver Bipolar IC Automotive Power 2-phase Stepper Motor Driver TCA3727G Bipolar IC Features 2 0.75 amp. / 50 V outputs Integrated driver, control logic and current control (chopper) Fast free-wheeling diodes Max. supply voltage 52 V Outputs free of crossover current Offset-phase turn-ON of output stages Z-diode for logic supply Low standby-current drain Full, half, quarter, mini step PG-DSO-24-13 Green (RoHS compliant) thermally enhanced SO package AEC Qualified Description TCA3727G is a bipolar, monolithic IC for driving bipolar stepper motors, DC motors and other inductive loads that operate on 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 0.75 A per phase at operating voltages up to 50 V. The direction and value of current are programmed for each phase via separate control inputs. 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 a full-bridge configuration have integrated, fast free-wheeling diodes and are free of crossover current. The logic is supplied either separately with 5 V or taken from the motor supply voltage by way of a series resistor and an integrated Z-diode. The device can be driven directly by a microprocessor with the possibility of all modes from full step through half step to mini step. Type Package Marking TCA3727G PG-DSO-24-13 TCA 3727G Data Sheet 4 Rev. 2.2, 2009-01-22