TLE 4726G Infineon Technologies, TLE 4726G Datasheet

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TLE 4726G

Manufacturer Part Number
TLE 4726G
Description
Manufacturer
Infineon Technologies
Datasheet

Specifications of TLE 4726G

Packages
PG-DSO-24
Ipeak
2 x 1.0 A
Inhibit
Y
Iq (typ)
20.0 µA
Mounting
SMT
Technology
Bipolar
2-Phase Stepper-Motor Driver
Bipolar IC
Overview
Features
• 2× 0.75 A / 50 V outputs
• Integrated driver, control logic and
• Fast free-wheeling diodes
• Low standby-current drain
• Full, half, quarter, mini step
Type
TLE4726G
Description
TLE4726G 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.
Data Sheet
current control (chopper)
Ordering Code
On Request
1
Package
PG-DSO-24-13
PG-DSO-24-13
Rev. 1.1, 2008-06-16
TLE4726G

Related parts for TLE 4726G

TLE 4726G Summary of contents

Page 1

Stepper-Motor Driver Bipolar IC Overview Features • 2× 0. outputs • Integrated driver, control logic and current control (chopper) • Fast free-wheeling diodes • Low standby-current drain • Full, half, quarter, mini step Type TLE4726G ...

Page 2

Figure 1 Pin Configuration (top view) Data Sheet Ι Ι Phase OSC 4 21 GND 5 20 GND 6 19 GND 7 18 GND 8 17 Q11 ...

Page 3

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. IX1 IX0 Input Phase 1; ...

Page 4

Oscillator Ι Functional Ι Logic Phase 1 Phase 1 3 Inhibit 21 Inhibit Ι20 24 Functional Ι21 23 Logic Phase 2 Phase 2 22 Figure 2 Block Diagram Data Sheet + ...

Page 5

Absolute Maximum Ratings = – 125 ° Parameter Supply voltage Logic supply voltage V Z-current of L Output current Ground current Logic inputs oscillator input voltage 1 2 Junction temperature Storage temperature ...

Page 6

Operating Range Parameter Supply voltage Logic supply voltage Case temperature Output current Logic inputs Thermal Resistances Junction ambient Junction ambient (soldered μm thick copper area) Junction case Note: In the operating range, the functions ...

Page 7

Characteristics (cont’ – 25 °C ≤ Parameter Oscillator Output charging current Charging threshold Discharging threshold Frequency Phase Current Selection Current Limit Threshold No current Hold Setpoint Accelerate Logic Inputs I ...

Page 8

Characteristics (cont’ – 25 °C ≤ Parameter Power Outputs Diode Transistor Sink Pair (D13, T13; D14, T14; D23, T23; D24, T24) Saturation voltage Saturation voltage Reverse current Forward voltage Forward ...

Page 9

I I Quiescent Current , S V Supply Voltage Ι Ι Ι Ι 20 Ι Ι Ι ...

Page 10

Output Saturation Voltages versus Output Current Typical Power Dissipation I Output Current (Non Stepping) Q Data Sheet V Forward Current sat I Diodes versus Forward Voltages Q Ι versus Permissible Power Dissipation tot versus Case Temperature P tot ...

Page 11

Input Characteristics of Inhibit 0.8 mA Ι 0.6 IXX 0.4 0.2 0 0.2 0.4 0.6 0 3.9 f Oscillator Frequency OSC Junction Temperature 30 V kHz OSC ...

Page 12

F Ι Ι L Ι Ι Ι Ι H Figure 3 Test Circuit +5 V μ 100 Micro Controller Figure 4 Application Circuit Data Sheet Ι 220 ...

Page 13

H Ι Ι Phase acc i set Ι set i acc i acc i set Ι set i acc H Phase Ι ...

Page 14

H Ι Ι Phase acc i set Ι set - i acc i acc i set Ι set - i acc H Phase 2 L ...

Page 15

Figure 7 Quarter-Step Operation Data Sheet 15 TLE4726G Rev. 1.1, 2008-06-16 ...

Page 16

H Ι Ι Phase acc i set i hold Ι hold i set i acc i acc i set i hold Ι hold i set i acc ...

Page 17

V Osc 2 Ι GND 0 V Q12 + sat Q11 + Q22 + Q21 + V S Operating conditions ...

Page 18

Inhibit L V Osc 2.3 V Oscillator High Imped. 1 Phase 1 L Ι GND Ι Q11 V High Impedance Q12 High Impedance Ι Phase 1 Operating Conditions: ...

Page 19

Calculation of Power Dissipation The total power dissipation P saturation losses P quiescent losses P switching losses The following equations give the power dissipation for chopper operation without phase reversal. This is the worst case, because full current flows for ...

Page 20

Figure 11 Turn-ON Voltage and Current at Chopper Transistor Figure 12 Data Sheet + V S Tx1 Dx1 Dx2 L Tx3 Dx3 Dx4 V sense R sense i R Ι ...

Page 21

Application Hints The TLE726G is intended to drive both phases of a stepper motor. Special care has been taken to provide high efficiency, robustness and to minimize external components. Power Supply The TLE726G will work with supply voltages ranging from ...

Page 22

Thermal Shut Down To protect the circuit against thermal destruction, thermal shut down has been implemented. To provide a warning in critical applications, the current of the sensing element is wired to input Inhibit. Before thermal shut down occurs Inhibit ...

Page 23

Package Outlines 1.27 2) +0.15 0. 15.6 Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area Figure 1 PG-DSO-24-13 Green Product ...

Page 24

Revision History Revision Date Changes 1.1 2008-06-17 Initial version of RoHS-compliant derivate of TLE4726 Page 1: AEC certified statement added Page 1 and 23: added RoHS compliance statement and Green product feature Page 1 and 23: Package changed to ...

Page 25

... Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life ...

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