TLE4954C/51C Differential Hall Effect Transmission Speed Sensors TLE4954C TLE4954C-E1 TLE4954C-E2 TLE4954C-E4 TLE4954CB TLE4954CB-E1 TLE4954CB-E2 TLE4951C TLE4951CB Product Information 2013-10-15 Sense & Control TLE4954C/51C Table of Contents Table of Contents Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 1.1 1.2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Target Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 2.1 2.2 2.2.1 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Sensor assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vibration Suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3.1 3.2 3.3 3.4 3.5 3.6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ESD Robustness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Timing Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Operation characteristics - TLE4951CB, TLE4954CB, TLE4954CB-E1, TLE4954CB-E2 . . . . . . . . . . 9 Reference Target Wheel for TLE4951CB, TLE4954CB, TLE4954CB-E1, TLE4954CB-E2 . . . . . . . . 10 4 4.1 4.2 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Package Information TLE4954C, TLE4954C-E1, TLE4954C-E2, TLE4951C . . . . . . . . . . . . . . . . . . 11 Package Information TLE4951CB, TLE4954CB, TLE4954CB-E1, TLE4954CB-E2 . . . . . . . . . . . . . 13 Product Information 2 4 4 4 6 2013-10-15 TLE4954C/51C General 1 General 1.1 Target Application TLE4954C/51C is an integrated differential Hall effect sensor for transmission applications with two wire PWM current interface. Its basic function is to provide information about rotational speed and direction of rotation to the transmission control unit. TLE4954C/51C includes a sophisticated algorithm which actively suppresses vibration while keeping excellent airgap performance. Infineon also offers customers the possibility to purchase sensors with already attached back bias magnets (CB versions). 1.2 Features Product Name CCW1) CW2) Pre Low time TLE4954C 60 μs 120 μs 30 μs TLE4954C-E1 45 μs 180 μs 30 μs TLE4954C-E2 45 μs 90 μs 30 μs TLE4954C-E4 45 μs 90 μs 15 μs TLE4951C Speed signal only Direction signal Speed 30 μs above 1kHz Direction signal up to 8kHz typ. (ccw) and 12kHz typ. (cw) none 180 μs Direction signal up to 8kHz min. 30 μs (ccw) and 12kHz min. (cw) All sensors with a B in the product name have an integrated back bias magnet. TLE4954CB 60 μs 120 μs 30 μs TLE4954CB-E1 45 μs 180 μs 30 μs TLE4954CB-E2 45 μs 90 μs 30 μs TLE4951CB Speed signal only 30 μs above 1kHz Direction signal up to 8kHz typ. (ccw) and 12kHz typ. (cw) none 180 μs 1) Rotation direction left 2) Rotation direction right Note: More specific information about the timer-characteristics can be found in the FAQ for TLE4954C/51C. Product Name Order Code Marking Package TLE4954C SP000848260 54C00A PG-SSO-2-53 TLE4954C-E1 SP000848264 54CE1A PG-SSO-2-53 TLE4954C-E2 SP000848268 54CE2A PG-SSO-2-53 TLE4954C-E4 SP001050144 54CE4A PG-SSO-2-53 TLE4954CB SP000913564 54CB0A PG-SSOM-2-11 TLE4954CB-E1 SP000913568 54CB1A PG-SSOM-2-11 TLE4954CB-E2 SP000913572 54CB2A PG-SSOM-2-11 TLE4951C SP000848256 51C00A PG-SSO-2-53 TLE4951CB SP000913560 51CB0A PG-SSOM-2-11 Product Information 3 2013-10-15 TLE4954C/51C Functional Description 2 Functional Description 2.1 General The differential Hall sensor IC detects the motion of tooth and magnet encoder applications. To detect the motion of ferromagnetic objects, the magnetic field must be provided by a back biasing permanent magnet. Either south or north pole of the magnet can be attached to the rear unmarked side of the IC package. The magnetic measurement is based on three equally spaced Hall elements, integrated on the IC. Both magnetic and mechanical offsets are cancelled by a self calibration algorithm. The sensor includes a current output PWM protocol. 2.2 Sensor assembly Sensor and back bias magnet can be applied in the following ways: S N N S S N N S S CCW CW N CCW CW GYYWW S 0015 0015 4952 123456 CW GYYWW S S 0015 4952 123456 N S VDD CCW VDD GND GYYWW S S 0015 4952 123456 S N S N GND VDD S N GND Figure 2-1 Sensor assembly and definition of rotating directions The output signals for a south biased sensor with a magnetic encoder and ferromagnetic tooth wheel will be issued in the following way. The tooth wheel is rotating in clockwise above the sensor. The output pulse will be issued by reaching the hysteresis levels after the pre low time. For a tooth wheel with ideal pitch (tooth to tooth) 5mm the direction signal achieves a phase shift of 90° compared to the speed signal. CW GYYWW S 0015 4952 4952 123456 S N VDD S N GND Figure 2-2 Clockwise rotation; south biased sensor Product Information 4 2013-10-15 TLE4954C/51C Functional Description notch pre-low ILow pre-low IHigh tooth tooth notch pre-low notch IDD t ∆Bspeed Hysteresis high level t Hysteresis low level ∆Bdir t Figure 2-3 Tooth wheel vs. sensor output signal in clockwise rotation; south biased sensor - TLE4954C, TLE4954C-E1, TLE4954C-E2, TLE4954C-E4 I DD notch tooth notch tooth notch IHigh ILow t ∆Bspeed Hysteresis high level t Hysteresis low level ∆Bdir t Figure 2-4 Tooth wheel vs. sensor output signal in clockwise rotation; south biased sensor - TLE4951C Product Information 5 2013-10-15 TLE4954C/51C Specifications 2.2.1 Vibration Suppression TLE4954C offers two different kinds of vibration suppression: The magnetic signal amplitude and the direction information are used for detection of parasitic magnetic signals. Unwanted magnetic signal can be caused by angular or airgap vibrations. If an input signal is identified as a vibration the output pulse will be suppressed. • • Vibration suppression via hysteresis. This is available after power on Vibration suppression via direction detection. This is available after start up calibration is performed. 3 Specifications 3.1 Operating Range Table 3-1 Operating Range Parameter Symbol Values Min. Unit Note / Test Condition Directly on the IC leads Typ. Max. Supply voltage VDDIC 4 20 V Operation junction temperature Tj -40 170 °C Speed signal range ∆Bspeed,range -120 120 mT 3.2 Electrical Characteristics Table 3-2 Electrical Characteristics Parameter Symbol Values Min. Typ. Unit Note / Test Condition Max. Supply current low ILow 7 mA Supply current high IHigh 14 mA Output rise/fall slew rate SRr, SRf 17 mA/μs Valid for tr and tf , between 10% and 90% value RM=75 Ω, Tj<175 °C Reset voltage VDD Reset 3.7 Power on time tON Period Jitter, f ≤ 2500 Hz SJit-far, Tj≤150 °C Period Jitter, 2500Hz< f < 12kHz SJit-far, Tj≤150 °C 3.3 ESD Robustness Table 3-3 ESD Protection 4 V 1 ms VDD >4V 3.2 % +3σ value, VDD=12 V, ∆Bspeed>4 mT peak to peak 4.2 % +3σ value, VDD=12 V, ∆Bspeed>4 mT peak to peak Parameter Symbol Test Unit Note ESD-Protection VESD ± 12 kV R = 1.5 kΩ, C = 100 pF Product Information 6 2013-10-15 TLE4954C/51C Specifications 3.4 Timing Characteristics Between each magnetic transition and the rising edge of the corresponding output pulse, the output current is low for tpre-low in order to allow reliable internal conveyance. After pre low time the output current level is set to high. After power on the speed pulse is being issued. As soon as the sensor has enough information to recognize the direction of the target wheel, the output pulse will include the direction information. Rotation direction is evaluated only for low rotation speed. The speed signal will be delivered again if the magnetic frequency is above fDR,max . tpre-low IDD IHigh tpre-low tS tpre-low tccw or tcw tccw or tcw ILow t ∆Bspeed Hysteresis high level t Power On Hysteresis low level Uncalibrated Speed Signal with negative offset Calibrated Speed Signal Figure 3-1 Definition of PWM Current Interface - TLE4954C, TLE4954C-E2, TLE4954C-E4 Product Information 7 2013-10-15 TLE4954C/51C Specifications tpre-low IDD tpre-low tccw or tcw IHigh tccw or tcw ILow t ∆Bspeed Hysteresis high level t Power On Hysteresis low level Uncalibrated Speed Signal with negative offset Calibrated Speed Signal Figure 3-2 Definition of PWM Current Interface - TLE4954C-E1 IDD IHigh tDNC thyst thyst ILow t ∆Bspeed Hysteresis high level t Power On Hysteresis low level Uncalibrated Speed Signal with negative offset Calibrated Speed Signal Figure 3-3 Definition of Current interface - TLE4951C Product Information 8 2013-10-15 TLE4954C/51C Specifications 3.5 Operation characteristics - TLE4951CB, TLE4954CB, TLE4954CB-E1, TLE4954CB-E2 Table 3-4 TLE4954CB, TLE4951CB Parameter Symbol Values min typ Unit Remarks max Operational airgap AG 3.3 mm Valid in running mode, measured from sensor housing (branded side) to target tooth. Valid at 25°C & 0h. No missing output pulses. Minimum speed signal ΔBspeed-limit 2.2 mT Peak to peak value 99% criteria Minimum direction signal ΔBBdir-limit 0.36 mT Peak to peak value 99% criteria Table 3-5 TLE4954CB-E1, TLE4954CB-E2 Parameter Symbol Values min Unit Remarks - mm Valid in running mode, measured from sensor housing (branded side) to target tooth. Valid at 25°C & 0h. No missing output pulses. typ max Operational airgap AG Minimum speed signal ΔBspeed-limit 2.2 mT Peak to peak value 99% criteria Minimum direction signal ΔBBdir-limit 0.9 mT Peak to peak value 99% criteria Product Information 9 2013-10-15 TLE4954C/51C Specifications 3.6 Reference Target Wheel for TLE4951CB, TLE4954CB, TLE4954CB-E1, TLE4954CB-E2 Z Z X Y Figure 3-4 Reference target wheel Table 3-6 Reference target wheel geometry Parameter Symbol Typ value Unit Outside diameter d 150 mm Number of teeth Z 60 - 50:50 % Pitch Ratio Material Product Information Remarks ST37 10 2013-10-15 TLE4954C/51C Package Information 4 Package Information 4.1 Package Information TLE4954C, TLE4954C-E1, TLE4954C-E2, TLE4951C Figure 4-1 Distance of the chip to the upper package edge Figure 4-2 PG-SSO-2-53 (Plastic Single Small Outline Package) packing, all dimensions in mm Product Information 11 2013-10-15 TLE4954C/51C Package Information Figure 4-3 PG-SSO-2-53 package outline, dimensions in mm. Product Information 12 2013-10-15 TLE4954C/51C Package Information 4.2 Package Information TLE4951CB, TLE4954CB, TLE4954CB-E1, TLE4954CBE2 Figure 4-4 PG-SSOM-2-11 package outline N S South Pole Biasing Figure 4-5 Back-bias field orientation Product Information 13 2013-10-15 TLE4954C/51C Package Information Figure 4-6 PG-SSOM-2-11 blister tape packing information For additional and more detailed information about the chip and package please visit the Infineon web page http://www.infineon.com. Edition 2013-10-15 Published by Infineon Technologies AG 81726 Munich, Germany © 2014 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a 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. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. Product Information 14 2013-10-15 w w w . i n f i n e o n . c o m Published by Infineon Technologies AG