TLE4959-5U-R [INFINEON]
The Infineon XENSIV TLE4959-5U-R is an integrated differential Hall speed sensor that perfectly fits into transmission applications.Its basic function is to provide information about rotational speed and direction of rotation to the transmission control unit. TLE4959-5U-R includes a sophisticated algorithm which actively suppresses vibration while keeping excellent airgap performance. The sensor comes in a RoHs compliant four-pin package, qualified for automotive usage. ;型号: | TLE4959-5U-R |
厂家: | Infineon |
描述: | The Infineon XENSIV TLE4959-5U-R is an integrated differential Hall speed sensor that perfectly fits into transmission applications.Its basic function is to provide information about rotational speed and direction of rotation to the transmission control unit. TLE4959-5U-R includes a sophisticated algorithm which actively suppresses vibration while keeping excellent airgap performance. The sensor comes in a RoHs compliant four-pin package, qualified for automotive usage. |
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TLE4959-5U-R Transmission Speed Sensor
Features
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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-R 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-R includes a sophisticated algorithm which actively suppresses
vibration while keeping excellent airgap performance.
Table 1
Type
Description
Marking
Ordering Code
Package
TLE4959-5U-R
59AYA3
SP004842806
PG-SSO-4-1
Data Sheet
www.infineon.com/sensors
1
Ver. 1.0
2019-07
TLE4959-5U-R Transmission Speed Sensor
Description
The TLE4959-5U-R 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)
Option for 12V
Vpullup
RLOAD
VS
RSupply
100 ...330Ω
RQ
1.2 kΩ
VDD
150 ... 220Ω
IQ
C
V
DD
Q
GND
100...470nF
VQ
CQ
1.8 ... 4.7nF
Figure 1
Typical Application Circuit
Data Sheet
2
Ver. 1.0
2019-07
TLE4959-5U-R 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.
Notch
Tooth
Notch
Notch
Tooth
Notch
IC Branded
Side
N
S
S
IC Branded
Side
N
Figure 2
Definition of the Positive Magnetic Field Direction
1.2
Block Diagram
PMU:
VDD
Chopper switches
Separated supplies
Bandgap (Temp. Compensated)
GND
Q
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
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Ver. 1.0
2019-07
TLE4959-5U-R 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.
Hysteresis = 0.25 * ΔBpp (peak to peak )
10
magnetic input signal
hysteresis HI
hysteresis LO
8
ΔBz,diff
6
4
2
0
-2
-4
-6
-8
-10
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
time [s]
Figure 4
Adaptive Hysteresis
Data Sheet
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Ver. 1.0
2019-07
TLE4959-5U-R 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
5
Ver. 1.0
2019-07
TLE4959-5U-R Transmission Speed Sensor
General Characteristics
2
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 VDD
supply resistor
-16
–
18
27
V
V
V
V
V
V
V
V
°C
continuous, TJ ≤ 175°C
max. 60 s, TJ ≤ 175°C
-18
-1.0
-0.3
–
max. 60 s, TJ ≤ 175°C
Output OFF voltage
Output ON voltage
VQ_OFF
VQ_ON
–
–
–
–
–
–
max. 1 h,TAmb ≤ 40°C
26.5
16
continuous, TJ ≤ 175°C
continuous, TAmb ≤ 40°C
max. 1 h, TAmb ≤ 40°C
–
18
–
26.5
185
max. 60 s, TAmb ≤ 40°C
exposure time: max. 10 × 1 h, VDD = 16V
Junction temperature
range
TJ
-40
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
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.
Data Sheet
6
Ver. 1.0
2019-07
TLE4959-5U-R Transmission Speed Sensor
General Characteristics
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 Rs
VDD
4.0
–
16
V
V
Continuous Output Off voltage
VQ_OFF
-
–
–
16
Supply voltage power- up/down
voltage ramp
dVDD/dt
3.0
1e4 V/ms
Supply current
IDD
IQ_ON
f
8.0
–
–
–
-
13.4 mA
Continuous output On current
Magnetic signal frequency range
15
10
mA VQ_LOW < 0.5 V
kHz
0
Dynamic range of the magnetic field DRmag_field_s -120
120 mT
of the differential speed channel
Dynamic range of the magnetic field DRmag_field_dir -60
of the direction channel
-
-
-
-
–
-
60 mT
Static range of the magnetic field of SRmag_field_s
0
550 mT
450 mT
the outer Hall probes
Static range of the magnetic field of DRmag_field_dir -100
the center Hall probe
Allowed static difference between
outer probes
SRmag_field_diff -30
30
mT
Normal operating junction
temperature
TJ
-40
-
175 °C
185 °C
exposure time: max. 2500 h
at TJ = 175°C, VDD = 16 V
exposure time: max.
10 × 1 h at TJ = 185°C,
V
DD = 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 TC
of magnetic material
-800
ppm internal compensation of
magnetic signal amplitude
of speed signal
Note:
In the operating range the functions given in the functional description are fulfilled
Data Sheet
7
Ver. 1.0
2019-07
TLE4959-5U-R 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
Symbol
Parameter
Values
Unit
Note or Test Condition
Min. Typ.
Max.
500
–
Output saturation voltage
VQsat
0
-
mV
V
IQ ≤ 15 mA
Clamping voltage VDD-Pin
VDD_clamp
42
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
IQleak
2.8
0
3.6
10
80
V
Output leakage current
0.1
-
µA
mA
VQ = 18 V
Output current limit during
short-circuit condition
IQshort
30
Junction temperature limit for Tprot
output protection
190
0.8
10
-
205
1
°C
Power on time
tpower_on
0.9
14
ms
µs
during this time the output is
locked to high.
Delay time between magnetic tdelay
signal switching point and
19
corresponding output signal
falling edge switching event
Output fall time
tfall
2.0
3.2
4
2.5
4.5
–
3.0
5.8
µs
µs
VPullup = 5 V, RPullup = 1.2 kΩ (+/-
10%), CQ = 1.8 nF (+/-15%),
valid between 80% - 20%
V
Pullup = 5 V, RPullup = 1.2 kΩ (+/-
10%), CQ = 1.8 nF (+/-15%),
valid between 90% - 10%
1)
Output rise time
trise
11.4 µs
1.78 mT
RPullup = 1.2 kΩ (+/-10%),
CQ = 1.8 nF (+/-15%),
valid between 10% - 90%
Digital noise constant of speed DNCmin
channel during start up
Period Jitter, f ≤ 8 kHz2)
Period Jitter, 8kHz≤f ≤10kHz2) Jit10kHz
1.22
1.5
–
Jit8kHz
-1
-1.1
–
1
%
%
n
1 sigma, ΔBpkpk = 3mT
1.1
0
1 sigma, ΔBpkpk = 3mT
Number of wrong pulses at
start-up
nStart
–
–
in forward rotational direction
0
1
n
in backward rotational
direction
Data Sheet
8
Ver. 1.0
2019-07
TLE4959-5U-R 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 out3)
Runoutglob
0
–
40
%
%
of magnetic speed signal
amplitude
al,speed
0
–
60
of magnetic speed signal
amplitude with reduced
performance on stop-start-
functionality
Runoutglob
0
0
–
–
40
60
%
%
of magnetic direction signal
amplitude
al,dir
of magnetic direction signal
amplitude with reduced
performance on stop-start-
functionality
Tooth to tooth run out (peak to Runouttooth
0
0
–
–
40
40
%
%
of magnetic speed signal
amplitude
peak variation on two
,speed
consecutive teeth / pole-pair)3)
Runouttooth
of magnetic direction signal
amplitude
,dir
Output protocol
tfwd
114
38
135
45
155
52
µs
µs
µs
tbwd
tpower-on
153
180
207
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)
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 = 5 V.
Data Sheet
9
Ver. 1.0
2019-07
TLE4959-5U-R 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
10
Ver. 1.0
2019-07
TLE4959-5U-R Transmission Speed Sensor
Package Information
4.2
Marking and Data Matrix Code
Figure 7
Table 5
Marking of PG-SSO-4-1 Package
Pin Description
Pin Number1)
Symbol
VDD
Function
1
2
3
4
Supply Voltage
Ground
GND
GND
Q
Ground
Open Drain Output
1) Refer to frontside view: leftmost pin corresponding to pin number 1
Data Sheet
11
Ver. 1.0
2019-07
TLE4959-5U-R Transmission Speed Sensor
Package Information
4.3
Packing Information
Figure 8
PG-SSO-4-1 Ammopack
Data Sheet
12
Ver. 1.0
2019-07
TLE4959-5U-R Transmission Speed Sensor
Revision History
5
Revision History
Version Date
Changes
1.0
2019-07
First version of released datasheet
Data Sheet
13
Ver. 1.0
2019-07
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 2019-07
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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With respect to any examples, hints or any typical
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 question please contact your nearest Infineon
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