TLE4727

TLE4727 Datasheet

TLE 4727

Part	Datasheet
TLE4727	TLE4727 (pdf)

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2-Phase Stepper-Motor Driver TLE 4727 Overview • 2 x amp. outputs • Integrated driver, control logic and current control chopper • Fast free-wheeling diodes • Max. supply voltage 45 V • Outputs free of crossover current • Offset-phase turn-ON of output stages • All outputs short-circuit proof • 5 V output for logic supply • Error-flag for overload, open load, overtemperature P-DIP-20-6 Bipolar IC Type TLE 4727 Ordering Code on request Package P-DIP-20-6 The TLE 4727 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 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 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 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. A stabilized 5 V output allows the supply of external components up to 5 mA. With the error output the TLE 4727 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. Datasheet 2005-07-20 TLE 4727 Ι10 1 Ι11 2 Phase 1 3 OSC 4 GND 5 GND 6 Q11 7 R1 8 +VS 9 Q12 10 Figure 1 Pin Configuration top view 20 Ι 20 19 Ι 21 18 Phase 2 17 Error 16 GND 15 GND 14 Q21 13 R 2 12 +VL 11 Q22 IEP01191 Datasheet 2005-07-20 TLE 4727 Pin Definitions and Functions Pin No. Function 1, 2, 19, 20 Digital control inputs IX0, IX1 for the magnitude of the current of the particular phase. 4 5, 6, 15, 16 7, 10 8 9 11, 14 12 Iset = 500 mA with RSense = 1 Current Control Phase Current Example of Motor Status No current 1 x Iset Iset x Iset Hold Normal mode Accelerate 1 “No current” in both bridges inhibits the circuit and current consumption will sink below 3 mA. Oscillator works at typ. 25 kHz if this pin is wired to ground across nF. Ground all pins are connected at leadframe internally. Push-pull outputs Q11, Q12 for phase 1 with integrated freewheeling diodes. Resistor R1 for sensing the current in phase Supply voltage block to ground, as close as possible to the IC, with a stable electrolytic capacitor of at least 47 µF in parallel with a ceramic capacitor of 100 nF. Push-pull outputs Q22, Q21 for phase 2 with integrated free wheeling diodes. Logic supply voltage internally generated 5 V voltage for logic supply up to 5 mA short circuit protected. Block to ground with a stable electrolytic capacitor of µF. Resistor R2 for sensing the current in phase Datasheet 2005-07-20 TLE 4727

PDF Datasheet Preview

2-Phase Stepper-Motor Driver

TLE 4727

Overview
• 2 x amp. outputs
• Integrated driver, control logic and current control
chopper
• Fast free-wheeling diodes
• Max. supply voltage 45 V
• Outputs free of crossover current
• Offset-phase turn-ON of output stages
• All outputs short-circuit proof
• 5 V output for logic supply
• Error-flag for overload, open load, overtemperature

P-DIP-20-6

Bipolar IC

Type TLE 4727
Ordering Code on request

Package P-DIP-20-6

The TLE 4727 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 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 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 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.

A stabilized 5 V output allows the supply of external components up to 5 mA. With the error output the TLE 4727 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.

Datasheet
2005-07-20

TLE 4727
Ι10 1 Ι11 2 Phase 1 3 OSC 4 GND 5 GND 6 Q11 7 R1 8 +VS 9 Q12 10

Figure 1 Pin Configuration top view
20 Ι 20 19 Ι 21 18 Phase 2 17 Error 16 GND 15 GND 14 Q21 13 R 2 12 +VL 11 Q22

IEP01191

Datasheet
2005-07-20

TLE 4727

Pin Definitions and Functions

Pin No.

Function
1, 2, 19, 20

Digital control inputs IX0, IX1 for the magnitude of the current of the particular phase.
4 5, 6, 15, 16 7, 10 8 9
11, 14 12

Iset = 500 mA with RSense = 1

Current Control Phase Current

Example of Motor Status

No current 1
x Iset

Iset
x Iset

Hold Normal mode Accelerate
1 “No current” in both bridges inhibits the circuit and current consumption will sink below 3 mA.

Oscillator works at typ. 25 kHz if this pin is wired to ground across nF.

Ground all pins are connected at leadframe internally.

Push-pull outputs Q11, Q12 for phase 1 with integrated freewheeling diodes.

Resistor R1 for sensing the current in phase Supply voltage block to ground, as close as possible to the IC, with a stable electrolytic capacitor of at least 47 µF in parallel with a ceramic capacitor of 100 nF.

Push-pull outputs Q22, Q21 for phase 2 with integrated free wheeling diodes.

Logic supply voltage internally generated 5 V voltage for logic supply up to 5 mA short circuit protected. Block to ground with a stable electrolytic capacitor of µF.

Resistor R2 for sensing the current in phase

Datasheet
2005-07-20

TLE 4727

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Datasheet ID: TLE4727 638758