TLE49595UHALA1 - INFINEON TECHNOLOGIES AG

Data Sheet 1 Ver. 1.0

www.infineon.com/sensors 2018-07

TLE4959-5U Transmission Speed Sensor

Features

• Hall based differential speed sensor

• High magnetic sensitivity

• Large operating airgap

• Dynamic self-calibration principle

• Adaptive hysteresis

• Direction of rotation detection

• High vibration suppression capabilities

• Three wire PWM voltage interface

• Magnetic encoder and ferromagnetic wheel application

• High immunity against ESD, EMC and mechanical stress, improved voltage dropout capability

• Automotive operating temperature range

• 4-pin package PG-SSO-4-1

• Green Product (RoHS compliant)

• AEC Qualified

Applications

The TLE4959-5U is an integrated differential Hall speed sensor ideally suited for transmission applications. Its

basic function is to provide information about rotational speed and direction of rotation to the transmission

control unit. TLE4959-5U includes a sophisticated algorithm which actively suppresses vibration while

keeping excellent airgap performance.

Table 1 Description

Type Marking Ordering Code Package

TLE4959-5U 59AYA0 SP001694294 PG-SSO-4-1

Data Sheet 2 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Description

The TLE4959-5U comes in a RoHs compliant four-pin package, qualified for automotive usage. the

recommended capacitors increase the EMC robustness of the device. In 12 V applications it is further

recommended to use a serial resistor RSupply for protection on the supply line. A pull-up resistor RLoad is

mandatory on the output pin and determines the maximum current flowing through the output transistor. A

value of 1.2 kΩ is recommended for the 5V application. (see Figure 1)

Figure 1 Typical Application Circuit

Supply

100 ...330Ω

GND

1.8 ... 4.7nF

LOAD

1.2 kΩ

pullup

100...470nF

Option for 12V

150 ... 220Ω

Data Sheet 3 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Functional Description

1 Functional Description

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 (See

Figure 2). 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 voltage output PWM protocol.

1.1 Definition of the Magnetic Field Direction

The magnetic field of a permanent magnet exits from the north pole and enters the south pole. If a north pole

is attached to the backside of the High End Transmission Sensor, the field at the sensor position is positive, as

shown in Figure 2.

Figure 2 Definition of the Positive Magnetic Field Direction

1.2 Block Diagram

Figure 3 Block Diagram

ToothNotch Notch

IC Branded

Side

IC Branded

Side

ToothNotch Notch

Digital-Core:

Min/Max-detection

Offset-calculation

Hysteresis-calculation

Offset compensation

Direction detection

Vibration suppression

Output-protocol

GND

Open

Drain

Hall

Direction-

sensing

Compensated

Amplifier and

Tracking ADC

Diff. Hall

Speed-sensing

PMU:

Chopper switches

Separated supplies

Bandgap (Temp. Compensated)

Compensated

Amplifier and

Tracking ADC

Data Sheet 4 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Functional Description

1.3 Basic Operation

The speed signal calculated out of the differential hall elements, is amplified, filtered and digitized. An

algorithm in the digital core for peak detection and offset calculation will be executed. The offset is fed back

into the speed signal path with a digital to analog converter for offset correction. During uncalibrated mode,

the output of the speed pulse is triggered in the digital core by exceeding a certain threshold of the tracking

ADC. In calibrated mode the output is triggered by the visible hysteresis.

The direction signal is calculated out of center Hall signals. The direction signal is amplified, filtered, and

digitized. In the digital core the direction and the vibration detection information is determined and the

output protocol is issued.

1.4 Uncalibrated and Calibrated Mode

After power on the differential magnetic speed signal is tracked by an analog to digital converter (Tracking

ADC) and monitored within the digital core. If the signal slope is identified as a rising edge or falling edge, the

first output pulse is triggered. A second trigger pulse is issued with direction information.

In uncalibrated mode, the output protocols are triggered by the DNC (detection noise constant) in the speed

path. After start up the sensor switches with the DNC min value and after that the DNC is adapted to the

magnetic input signal amplitude.

The offset update starts if two valid extrema values are found and the direction of the update has the same

orientation as the magnetic signal. For example, a positive offset update is being issued on a rising magnetic

edge only. After a successful offset correction, the sensor is in calibrated mode. Switching occurs at the

adaptive hysteresis threshold level.

In calibrated mode, the DNC is adapted to magnetic input signal amplitude with a minimum of

ΔBlimit . The output pulses are then triggered with adaptive hysteresis.

1.5 Hysteresis Concept

The adaptive hysteresis is linked to the input signal. Therefore, the system is able to suppress switching if

vibration or noise signals are smaller than the adaptive hysteresis levels. The typical value for the hysteresis

level is 1/4 of the magnetic input signal amplitude, the minimum hysteresis level is ΔBlimit.

The visible hysteresis keeps the excellent performance in large pitch transmission application wheels.

Figure 4 Adaptive Hysteresis

-10

-8

-6

-4

-2

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07

time [s]

ΔB

[mT]

Hysteresis = 0.25 * ΔB

(peak to peak )

ΔB

z,diff

magnetic input signal

hysteresis HI

hysteresis LO

Data Sheet 5 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Functional Description

1.6 Rotational Direction

The direction signal is digitized by an analog to digital converter (direction ADC) and fed into the digital core.

Depending upon the rotation direction of the target wheel, the signal of the center probe anticipates or lags

behind for 90°. This phase relationship is evaluated and converted into rotation direction information by

sampling the signal of the center probe in the proximity of the zero crossing of the “speed” bridge signal.

The first pulse after power has a different length to signalize that there is no direction information available.

1.7 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 air gap vibrations. If an input signal is

identified as a vibration the output pulse will be suppressed.

Data Sheet 6 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

General Characteristics

2 General Characteristics

2.1 Absolute Maximum Ratings

Note: Stresses above the max values listed here may cause permanent damage to the device. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability. Maximum

ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to

the integrated circuit.

Table 2 Absolute Maximum Ratings

Parameter Symbol Values Unit Note or Test Condition

Min. Typ. Max.

Supply voltage without

supply resistor

VDD -16 – 18 V continuous, TJ≤175°C

27 V max. 60 s, TJ≤175°C

-18 V max. 60 s, TJ≤175°C

Output OFF voltage VQ_OFF -1.0 – V max. 1 h,TAmb ≤ 40°C

-0.3 – 26.5 V continuous, TJ≤175°C

Output ON voltage VQ_ON – – 16 V continuous, TAmb ≤40°C

– – 18 V max. 1 h, TAmb ≤40°C

– – 26.5 V max. 60 s, TAmb ≤40°C

Junction temperature

range

TJ-40 – 185 °C exposure time: max. 10 × 1 h, VDD = 16V

Magnetic field induction BZ-5 – 5 T magnetic pulse during magnet

magnetization.

Valid 10 s with Tambient ≤80°C

ESD compliance ESDHBM -2 – 2 kV HBM1)

1) ESD susceptibility, HBM according to EIA/JESD 22-A114B

Data Sheet 7 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

General Characteristics

2.2 Operating Range

All parameters specified in the following sections refer to these operating conditions unless otherwise

specified.

Note: In the operating range the functions given in the functional description are fulfilled

Table 3 General Operating Conditions

Parameter Symbol Values Unit Note or Test Condition

Min. Typ. Max.

Supply voltage without supply

resistance Rs

VDD 4.0 – 16 V

Continuous Output Off voltage VQ_OFF -–16V

Supply voltage power- up/down

voltage ramp

dVDD/dt 3.0 – 1e4 V/ms

Supply current IDD 8.0 – 13.4 mA

Continuous output On current IQ_ON –15mAVQ_LOW < 0.5 V

Magnetic signal frequency range f0–10kHz

Dynamic range of the magnetic field

of the differential speed channel

DRmag_field_s -120 - 120 mT

Dynamic range of the magnetic field

of the direction channel

DRmag_field_dir -60 - 60 mT

Static range of the magnetic field of

the outer Hall probes

SRmag_field_s 0 - 550 mT

Static range of the magnetic field of

the center Hall probe

DRmag_field_dir -100 - 450 mT

Allowed static difference between

outer probes

SRmag_field_diff -30 - 30 mT

Normal operating junction

temperature

TJ-40 – 175 °C exposure time: max. 2500 h

at TJ= 175°C, VDD =16V

- - 185 °C exposure time: max.

10 × 1 h at TJ= 185°C,

VDD = 16 V, additive to other

lifetime

Not operational lifetime Tno -40 150 °C without sensor function;

exposure time max 500 h @

150°C; increased time for

lower temperatures

according to Arrhenius-

Model, additive to other

lifetime

Temperature compensation range

of magnetic material

TC -800 ppm internal compensation of

magnetic signal amplitude

of speed signal

Data Sheet 8 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Electrical and Magnetic Characteristics

3 Electrical and Magnetic Characteristics

All values specified at constant amplitude and offset of input signal, over operating range, unless otherwise

specified. Typical values correspond to VS = 5 V and TAmb. = 25°C

Table 4 Electrical and Magnetic Parameters

Parameter Symbol Values Unit Note or Test Condition

Min. Typ. Max.

Output saturation voltage VQsat 0 - 500 mV IQ≤15 mA

Clamping voltage VDD-Pin VDD_clamp 42 – V leakage current through ESD

diode < 0.5mA

Clamping voltage VQ-Pin VQclamp 42 - V leakage current through ESD

diode < 0.5mA

Reset voltage VDD_reset 2.8 3.6 V

Output leakage current IQleak 00.110µAVQ=18V

Output current limit during

short-circuit condition

IQshort 30 - 80 mA

Junction temperature limit for

output protection

Tprot 190 - 205 °C

Power on time tpower_on 0.8 0.9 1 ms during this time the output is

locked to high.

Delay time between magnetic

signal switching point and

corresponding output signal

falling edge switching event

tdelay 10 14 19 µs

Output fall time tfall 2.0 2.5 3.0 µs VPullup = 5 V, RPullup =1.2kΩ (+/-

10%), CQ= 1.8 nF (+/-15%),

valid between 80% - 20%

3.2 4.5 5.8 µs VPullup = 5 V, RPullup =1.2kΩ (+/-

10%), CQ= 1.8 nF (+/-15%),

valid between 90% - 10%

Output rise time trise1) 4 – 11.4 µs RPullup =1.2kΩ (+/-10%),

CQ= 1.8 nF (+/-15%),

valid between 10% - 90%

Digital noise constant of speed

channel during start up

DNCmin 1.22 1.5 1.78 mT

Period Jitter, f ≤ 8 kHz2) Jit8kHz -1 – 1 % 1 sigma, ΔBpkpk = 3mT

Period Jitter, 8kHz ≤ f ≤10kHz2) Jit10kHz -1.1 1.1 % 1 sigma, ΔBpkpk = 3mT

Number of wrong pulses at

start-up

nStart ––0nin forward rotational direction

0 – 1 n in backward rotational

direction

Data Sheet 9 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Electrical and Magnetic Characteristics

Note: The listed Electrical and magnetic characteristics are ensured over the operating range of the

integrated circuit. Typical characteristics specify mean values expected over the production spread.

If not other specified, typical characteristics apply at TAmb = 25°C and VS=5V.

Global run out3) Runoutglob

al,speed

0 – 40 % of magnetic speed signal

amplitude

0 – 60 % of magnetic speed signal

amplitude with reduced

performance on stop-start-

functionality

Runoutglob

al,dir

0 – 40 % of magnetic direction signal

amplitude

0 – 60 % of magnetic direction signal

amplitude with reduced

performance on stop-start-

functionality

Tooth to tooth run out (peak to

peak variation on two

consecutive teeth / pole-pair)3)

Runouttooth

,speed

0 – 40 % of magnetic speed signal

amplitude

Runouttooth

,dir

0 – 40 % of magnetic direction signal

amplitude

Output protocol tfwd 38 45 52 µs

tbwd 114 135 155 µs

tpower-on 153 180 207 µs

1) Application parameter, IC shall not increase the rise time, Values are calculated and not tested

2) Parameter not subject to productive test. Verified by lab characterization based on jitter-measurement > 1000

periods

3) Defined as 1-(amplitude_min/amplitude_max)

Table 4 Electrical and Magnetic Parameters (cont’d)

Parameter Symbol Values Unit Note or Test Condition

Min. Typ. Max.

Data Sheet 10 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Package Information

4 Package Information

Pure tin covering (green lead plating) is used. The product is RoHS (Restriction of Hazardous Substances)

compliant and marked with letter G in front of the data code marking and may contain a data matrix code on

the rear side of the package (see also information note 136/03). Please refer to your key account team or

regional sales if you need further information.

The specification for soldering and welding is defined in the latest revision of application note

“Recommendation for Board Assembly-Hallsensor SSO Packages”.

4.1 Package Outline

Figure 5 PG-SSO-4-1 (Plastic Green Single Slim Outline), Package Dimensions

Figure 6 Position of the Hall Elements and distance to the branded Side

Data Sheet 11 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Package Information

4.2 Marking and Data Matrix Code

Figure 7 Marking of PG-SSO-4-1 Package

Table 5 Pin Description

Pin Number1)

1) Refer to frontside view: leftmost pin corresponding to pin number 1

Symbol Function

1VDD Supply Voltage

2GNDGround

3GNDGround

4QOpen Drain Output

Data Sheet 12 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Package Information

4.3 Packing Information

Figure 8 PG-SSO-4-1 Ammopack

Data Sheet 13 Ver. 1.0

2018-07

TLE4959-5U Transmission Speed Sensor

Revision History

5 Revision History

Version Date Changes

1.0 2018-07 First version of released datasheet

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Edition 2018-07

Published by

Infineon Technologies AG

81726 Munich, Germany

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