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Q67000-A8302

2-Phase Stepper-Motor Driver Bipolar IC

Infineon Technologies 

2-Phase Stepper-Motor Driver

Bipolar IC

TCA 3727

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

Description

TCA 3727 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.

P-DSO-24-1, -3

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

TCA 3727

TCA 3727 G

Data Sheet

Ordering Code

Q67000-A8302

Q67000-A8335

1

Package

P-DIP-20-6

P-DSO-24-3

Rev. 2.0, 2004-10-01

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