TLE4959C [INFINEON]

The Infineon XENSIV TLE4959 now also addresses your 3-wire applications with the latest state-of-the art technology for our transmission sensors.Differential Hall sensor TLE4959 is your choice when you need a 3-wire-sensor with direction detection and active vibration suppression.Beside it´s outstanding airgap and best in class Hall jitter performance, with it´s high immunity against strayfields it is the ideal match not only for traditional transmissions but also particularly for hybrid applications.;


型号：	TLE4959C
厂家：	Infineon
描述：	The Infineon XENSIV TLE4959 now also addresses your 3-wire applications with the latest state-of-the art technology for our transmission sensors.Differential Hall sensor TLE4959 is your choice when you need a 3-wire-sensor with direction detection and active vibration suppression.Beside it´s outstanding airgap and best in class Hall jitter performance, with it´s high immunity against strayfields it is the ideal match not only for traditional transmissions but also particularly for hybrid applications.
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TLE4959C 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

3-pin package PG-SSO-3-52

Green Product (RoHS compliant)

AEC Qualified

Applications

The TLE4959C 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. TLE4959C includes a sophisticated algorithm which actively suppresses vibration while keeping

excellent airgap performance.

Table 1

Type

Description

Marking

Ordering Code

Package

TLE4959C

59AIC0

SP001671650

PG-SSO-3-52

Data Sheet

www.infineon.com/sensors

Ver. 1.1

2020-06

TLE4959C Transmission Speed Sensor

Description

The TLE4959C comes in a RoHs compliant three-pin package, qualified for automotive usage. It has two

integrated capacitors on the lead frame (220 nF/1.8 nF). These capacitors increase the EMC robustness of the

device. In 12 V applications it is further recommended to use a serial resistor R_Supplyof 100 Ω (tbd) for

protection on the supply line. A pull-up resistor R_Loadis 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)

Option for 12V

I_DD

V_pullup

PG-SSO- 3-52

R_Supply

R_Load

V_DD

1.2 kΩ

V_DD

I_Q

C_VDD

C_Q

C_VDD= 220 nF

C_Q= 1.8 nF

...integrated in package

GND

V_Q

Figure 1

Typical Application Circuit

Data Sheet

Ver. 1.1

2020-06

TLE4959C Transmission Speed Sensor

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.

Notch

Tooth

Notch

Tooth

Notch

IC Branded

Side

IC Branded

Side

Figure 2

Definition of the Positive Magnetic Field Direction

1.2

Block Diagram

PMU:

V_DD

GND

Chopper switches

Separated supplies

Bandgap (Temp. Compensated)

Digital-Core:

Min/Max-detection

Offset-calculation

Compensated

Amplifier and

Tracking ADC

Diff. Hall

Speed-sensing

Hysteresis-calculation

Offset compensation

Direction detection

Vibration suppression

Output-protocol

Open

Drain

Hall

Direction-

sensing

Compensated

Amplifier and

Tracking ADC

Figure 3

Block Diagram

Data Sheet

Ver. 1.1

2020-06

TLE4959C 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

deltaBlimit. 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 ΔB_limit

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

Hysteresis = 0.25 * ΔB_pp(peak to peak )

magnetic input signal

hysteresis HI

hysteresis LO

ΔB_z,diff

-2

-4

-6

-8

-10

0.01

0.02

0.03

0.04

0.05

0.06

0.07

time [s]

Figure 4

Adaptive Hysteresis

Data Sheet

Ver. 1.1

2020-06

TLE4959C 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 (power on pulse) has a different length to signalize that there is no direction

information available .

Forward pulse (t_fwd) is issue if the wheel rotates from pin 1 to pin 3

Backward pulse (t_bwd) is issue if the wheel rotates from pin 3 to pin 1

Branded

side

speed

signal

B_z,left– B _z,right

B_z,left

B _z,right

Monocell

direction

signal

B _z,center

1 2 3

Figure 5

Direction definition

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

Ver. 1.1

2020-06

TLE4959C Transmission Speed Sensor

General Characteristics

2.1

Absolute Maximum Ratings

Table 2

Absolute Maximum Ratings

Parameter

Symbol

Values

Typ. Max.

Unit Note or Test Condition

Min.

Supply voltage without V_DD

supply resistor

-16

–

°C

continuous, T_J≤ 175°C

max. 60 s, T_J≤ 175°C

-18

-1.0

-0.3

–

max. 60 s, T_J≤ 175°C

Output OFF voltage

Output ON voltage

V_{Q_OFF}

V_{Q_ON}

–

max. 1 h,T_Amb≤ 40°C

26.5

continuous, T_J≤ 175°C

continuous, T_Amb≤ 40°C

max. 1 h, T_Amb≤ 40°C

–

26.5

185

max. 60 s, T_Amb≤ 40°C

exposure time: max. 10 × 1 h, V_DD= 16V

Junction temperature

range

T_J

-40

Magnetic field induction B_Z

-5

–

magnetic pulse during magnet

magnetization.

valid 10 s with T_ambient≤ 80°C

ESD compliance

ESD_HBM

-6

–

HBM¹⁾

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

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.

2.2

Operating Range

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

specified.

Table 3

General Operating Conditions

Symbol

Parameter

Values

Unit Note or Test Condition

Min. Typ. Max.

Supply voltage without supply

resistance R_s

V_DD

4.0

–

Continuous Output Off voltage

V_{Q_OFF}

–

Supply voltage power- up/down

voltage ramp

dV_DD/dt

3.0

1e4 V/ms

Supply current

I_DD

8.0

–

13.4 mA

Continuous output On current

I_{Q_ON}

mA V_{Q_LOW}< 0.5 V

Data Sheet

Ver. 1.1

2020-06

TLE4959C Transmission Speed Sensor

General Characteristics

Table 3

General Operating Conditions (cont’d)

Parameter

Symbol

Values

Unit Note or Test Condition

Min. Typ. Max.

Capacitance between IC supply &

ground pins

C_VDD

C_Q

198 220

242 nF

capacitor type X8R,

rated voltage =50 V¹⁾

Output capacitance between IC

output and ground pins

1.62 1.8

1.98 nF

capacitor type X8R,

rated voltage =50 V¹⁾

Frequency range for direction

detection (hystersis)

f_Dir

–

1800 Hz

1500 Hz

for increasing rotational

frequency

for decreasing rotational

frequency

Magnetic signal frequency range

–

kHz

Dynamic range of the magnetic field DR_{mag_field_s}-120

120 mT ADC-range

of the differential speed channel

Dynamic range of the magnetic field DR_{mag_field_dir}-60

of the direction channel

mT ADC-range

Static range of the magnetic field of SR_{mag_field_s}

the outer Hall probes in back-bias

configuration

550 mT no wheel in fron of module

/Offset-DAC-Compensation

-range

Static range of the magnetic field of DR_{mag_field_dir}-100

the center Hall probe

450 mT no wheel in fron of module

/Center-Offset-DAC-

Compensation-range

Allowed static difference between

outer probes

SR_{mag_field_diff}-30

mT no wheel in front of module

Normal operating junction

temperature

T_J

-40

–

175 °C

185 °C

exposure time: max. 2500 h

at T_J= 175°C, V_DD= 16 V

exposure time: max.

10 × 1 h at T_J= 185°C,

_DD= 16 V, additive to other

lifetime

Not operational lifetime

T_no

-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 TC

of magnetic material

-600

ppm internal compensation of

magnetic signal amplitude

of speed signal

1) Specified at room temperature, test condition at 25°C with 1V at 1kHz, temperature variation to be added

Note:

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

Data Sheet

Ver. 1.1

2020-06

TLE4959C Transmission Speed Sensor

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 V_S= 5 V and T_Amb.= 25°C

Table 4

Electrical and Magnetic Parameters

Symbol

Parameter

Values

Unit

Note or Test Condition

Min. Typ.

Max.

500

–

Output saturation voltage

V_Qsat

I_Q≤ 15 mA

Clamping voltage V_DD-Pin

V_{DD_clamp}

leakage current through ESD

diode < 0.5mA

Clamping voltage V_Q-Pin

V_Qclamp

leakage current through ESD

diode < 0.5mA

Reset voltage

V_{DD_reset}

I_Qleak

2.8

3.6

Output leakage current

0.1

µA

V_Q= 18 V

Output current limit during

short-circuit condition

I_Qshort

Junction temperature limit for T_prot

output protection

190

0.8

205

°C

Power on time

t_{power_on}

0.9

µs

during this time the output is

locked to high.

Delay time between magnetic t_delay

signal switching point and

falling edge

corresponding output signal

falling edge switching event

Output fall time

t_fall

2.0

3.2

2.5

4.5

–

3.0

5.8

µs

V_Pullup= 5 V, R_Pullup= 1.2 kΩ (+/-

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

valid between 80% - 20%

_Pullup= 5 V, R_Pullup= 1.2 kΩ (+/-

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

valid between 90% - 10%

1)2)

Output rise time

t_rise

11.4 µs

1.78 mT

R_Pullup= 1.2 kΩ (+/-10%),

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

valid between 10% - 90%

Digital noise constant of speed DNC_min

channel during start up

Period Jitter, f ≤ 8 kHz³⁾

Period Jitter, 8kHz ≤f ≤ 10kHz³⁾Jit_10kHz

1.22

1.5

–

Jit_8kHz

-1

-1.1

–

1 sigma, ΔB_pkpk= 3mT

1.1

1 sigma, ΔB_pkpk= 3mT

Number of wrong pulses at

start-up

n_Start

–

in forward rotational direction

in backward rotational

direction

Data Sheet

Ver. 1.1

2020-06

TLE4959C Transmission Speed Sensor

Electrical and Magnetic Characteristics

Table 4

Electrical and Magnetic Parameters (cont’d)

Parameter

Symbol

Values

Min. Typ.

Unit

Note or Test Condition

Max.

Global run out⁴⁾

Runout_glob

–

of magnetic speed signal

amplitude

al,speed

–

of magnetic speed signal

amplitude with reduced

performance on stand-still

functionality

Runout_glob

–

of magnetic direction signal

amplitude

al,dir

of magnetic direction signal

amplitude with reduced

performance on stand-still

functionality

Tooth to tooth run out (peak to Runout_tooth

–

of magnetic speed signal

amplitude

peak variation on two

,speed

consecutive teeth / pole-pair)⁴⁾

Runout_tooth

of magnetic direction signal

amplitude

,dir

Sudden airgap jump

S_AJ

µs

Output protocol in forward

direction

t_fwd

V_Pullup= 5 V, R_Pullup= 1.2 kΩ (+/-

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

valid between 50% of falling

edge to 50% of next rising

edge

Output protocol in backward

direction

t_bwd

104

µs

Power on pulse

t_power-on

153

180

207

1) Value of capacitor: 1.8 nF±10%; ceramic: X8R; maximum voltage: 50 V

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

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

periods

4) Defined as 1-(amplitude_min/amplitude_max)

5) No additional lost/pulse due to specified sudden airgap jump. No offset change and/or previous vibration

considered.

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 T_Amb= 25°C and V_S= 5 V.

Data Sheet

Ver. 1.1

2020-06

TLE4959C Transmission Speed Sensor

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 6

PG-SSO-3-52 (Plastic Green Single Slim Outline), Package Dimensions

Data Sheet

Ver. 1.1

2022-06

TLE4959C Transmission Speed Sensor

Package Information

4.2

Position of the Hall Element

Figure 7

Position of the Hall Elements in PG-SSO-3-52 and Distance to the Branded Side

4.3

Marking and Data Matrix Code

Figure 8

Marking of PG-SSO-3-52 Package

4.4

Pin Configuration and Sensitive Area

Table 5

Pin Description

Pin Number¹⁾

Symbol

V_DD

Function

Supply Voltage

Ground

GND

Open Drain Output

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

Data Sheet

Ver. 1.1

2022-06

TLE4959C Transmission Speed Sensor

Package Information

4.5

Packing Information

Figure 9

PG-SSO-3-52 Ammopack

Data Sheet

Ver. 1.1

2022-06

TLE4959C Transmission Speed Sensor

Revision History

Version Date

Changes

1.0

1.1

2022-06

First version of released Datasheet

Sudden airgap jump capability added

Data Sheet

Ver. 1.1

2022-06

Please read the Important Notice and Warnings at the end of this document

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The information given in this document shall in no For further information on technology, delivery terms

Edition 2018-02

Published by

Infineon Technologies AG

81726 Munich, Germany

event be regarded as a guarantee of conditions or and conditions and prices, please contact the nearest

characteristics ("Beschaffenheitsgarantie").

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values stated herein and/or any information regarding

the application of the product, Infineon Technologies

hereby disclaims any and all warranties and liabilities

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In addition, any information given in this document is

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TLE4959C [INFINEON]

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