TLE8444SL Infineon Technologies, TLE8444SL Datasheet
TLE8444SL
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TLE8444SL Summary of contents
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Table of Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... Target Applications: • Unipolar or Bipolar Loads • Stepper Motors (e.g. Idle Speed Control) • DC brush Motors Type TLE 8444SL Data Sheet =150 C) DS(ON)MAX j Package PG-SSOP-24-7 3 TLE 8444SL PG-SSOP-24-7 Marking TLE8444SL Rev. 1.1, 2009-07-07 ...
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Block Diagram TLE8444 IN1 Function Logic OUT1+2 IN2 Inhibit INH EF1 EF2 Function IN3 OUT3+4 IN4 Figure 1 Block Diagram Data Sheet Vs monitor Internal under/overvoltage Supply detection Error Flag Generation Logic 4 VS Protected Driver Stage OUT1+2 Charge ...
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INH, INHH, INHL V V EFx, EFLx V V INx, INHx, Figure 2 Terms Data Sheet INH I INHH TLE8444 EFx I EFLKx INx I INx GND V I INLx GND 5 ...
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Pin Configuration 3.1 Pin Assignment Figure 3 Pin Configuration 3.2 Pin Definitions and Functions Pin Symbol Function 1, 2, 11, GND Ground; Signal ground; All GND pins must be externally connected together to the 12, 20 common GND potential ...
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Pin Symbol Function 14 OUT4 Power Output of Half-bridge 4 Short circuit protected; with integrated free-wheeling diodes 17 INH Inhibit Input Low = Device in sleep mode 18 IN4 Input Channel of Half-bridge 4 Controls OUT4, Inverting Input with internal ...
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General Product Characteristics 4.1 Absolute Maximum Ratings 1) Absolute Maximum Ratings +150 C; all voltages with respect to ground, positive current flowing into pin (unless otherwise j specified) Pos. Parameter Voltages 4.1.1 Supply voltage ...
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Functional Range Pos. Parameter 4.2.1 Supply Voltage Range for Normal Operation 4.2.2 Extended Supply Voltage Range for Operation 4.2.3 Supply voltage increasing 4.2.4 Supply voltage decreasing 4.2.5 Logic input voltages (IN1; IN2; IN3; IN4; INH) 4.2.6 Junction temperature Note: ...
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Electrical Characteristics 4.4.3 Electrical Characteristics - +150 C, INH = HIGH current flowing into pin (unless otherwise specified) Pos. Parameter Current Consumption, INH = GND 4.4.1 ...
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Electrical Characteristics (cont’ - +150 C, INH = HIGH current flowing into pin (unless otherwise specified) Pos. Parameter 4.4.25 Forward voltage; lower Input Interface, Logic Inputs IN1, ...
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Block Description 5.1 Power Supply 5.1.1 General The TLE 8444SL has one power supply input V drivers are connected to this supply voltage block is generated by an internal bandgap reference circuit derived from the 12V board-net. To block ...
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Reverse Polarity The TLE 8444SL requires an external reverse polarity protection. This protection is essential to avoid an undesired I reverse current ( ) to flow from ground potential to battery causing excessive power dissipation across the RB diodes ...
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Input / Output Stages Input Circuit The control inputs consist of TTL/CMOS-compatible schmitt-triggers with hysteresis. Inputs IN1 and IN3 have internal pull down circuits whereas IN2 and IN4 have internal pull up circuits signal is applied to ...
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IN1, IN3 OUT1, OUT3 0 = Logic LOW Low side transistor is turned-ON High side transistor is turned-OFF 1 = Logic HIGH High side transistor is turned-ON Low side transistor is turned-OFF IN2, IN4 OUT2, OUT4 0 = Logic LOW ...
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Monitoring Functions 5.3.1 Diagnostics The EF1 and EF2 pins are open drain outputs and must be externally connected via pull-up resistors to 5V. In normal conditions, the EF1 and EF2 signals are by default high. In case of an ...
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Power Supply Monitoring The power supply Voltage V is monitored for over- and under voltage (refer to block diagram: S shows the error flag signalling during an undervoltage and overvoltage situation where as hysteresis concept implemented during undervoltage and ...
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VOUT H L Figure 7 Undervoltage Hysteresis 5.3.3 Temperature Monitoring Temperature sensors are integrated in the power stages. Each half bridge (HS+LS) is equipped with one temperature sensor. The temperature monitoring circuit compares the measured temperature to the shutdown thresholds. ...
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Power-Outputs 1-4 (Half Bridge Outputs) 5.4.1 Protection and Diagnosis The device provides embedded protective functions. Integrated protection functions are designed to prevent IC destruction under fault conditions described in this target datasheet. Fault conditions are considered as “outside” normal ...
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Control Input EF2 Gate Status GND EF1 GND Figure 10 Simplified Schematic for Short circuit protection and Open Load detection in LS-switch Control Input Gate Status EF2 Error Flag Generation GND Figure 11 Simplified Schematic for short circuit protection in ...
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V V REF REF - + Temp Sensor GND GND Thermal Shut Down + REF - + GND Vsupply-Supervision OR 1 OC_HS1 Delay OC_HS2 >1 OC_HSD OC_HS3 t OC_HS4 d OR2 Delay OC_LS1 OC_LS2 >1 ...
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Short Circuit Diagnosis If a short circuit of a halfbridge output to GND is present, the device will behave like displayed in INH active mode OUTx d_SD Figure ...
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Open Load Open-load detection in ON-state is implemented in the low-side transistors of the bridge outputs. If the current through the low side transistor is lower than the reference current I detection delay time t , the open-load error ...
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Output Switching Capability Dead Time to prevent Cross Currents In bridge configurations the high-side and low-side power transistors are ensured never to be simultaneously “ON” to avoid cross currents. This is usually assured by the integration of delays in ...
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INH=High INx Figure 17 Switching Time Characterization Circuit Data Sheet V S HSx IOUT A LSx TLE8444 GND 25 TLE 8444SL Block Description 100 x OUTx 100 Rev. 1.1, 2009-07-07 ...
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R EF2 WDO WDI R VCC µC XC866 Figure 18 Application Circuit for DC brush motor loads Figure 18a, Two Motor separately: e.g. mirror x-y position. The motors can be driven independently or in parallel. Figure 18b, Three Motor cascaded: ...
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WDO WDI R VCC µC XC866 Figure 19 Application Circuit for bipolar stepper motor loads Note : All VS and GND pins must be externally connected together. CS and CS2 capacitors must be placed as close as possible to the ...
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Application Note for Bipolar Stepper Motor Control Current Flow In a H-Bridge for stepper motor control To achieve a continuous movement of a bipolar stepper motor rotor, the phase current has to be reversed step by step. The current ...
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Control pattern for bipolar stepper motor applications Bipolar stepper motors applications for linear positioning such as Idle Speed control requires a specific input signal pattern which is displayed in Figure depends on the used motorload (L/R ratio ...
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Package Outlines 8˚ MAX. 0.65 0˚...8˚ 2) 0.25 ±0.05 0. 8.65 ±0.1 Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Does not include dambar protrusion of ...
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Revision History 0.40.3 TLE 8444SL Revision History: Rev. 1.1, 2009-07-07 Version Subjects (major changes since last revision) 1.1 Package Illustration on overview sheet corrected from exposed pad to standard SSOP package 1.0 Final Data Sheet Release Data Sheet 31 ...
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... 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 ...