TLE4966V-1K_15 Datasheet, PDF (8/24 Pages) Infineon Technologies AG – In Plane Sensing with Vertical Dual Hall Effect Latch for Automotive Applications

TLE4966V-1K
Functional Description
2
Functional Description
The TLE4966V-1K is specifically designed to detect the direction and rotational speed of a pole wheel as shown
in Figure 1-2.
2.1
General
The new Infineon Vertical Double Hall Switch TLE4966V-1K has integrated the functionality of detecting speed
and direction of a rotating magnet, commonly known as pole wheel.
Note: Completely new is the in plane field direction which will be detected with the TLE4966V-1K shown in
Figure 2-1 which enables completely new application layouts.
Branded Side
Pin4
V_DD
V-Hall
elements
Centered
Pin3
Q1
Direction
S
N
6
1
Pin6
GND
Pin1
Q2
Speed
Figure 2-1 Target Application: Side view and top view for In-Plane Sensing
The sensor provides a speed output at Q2 with the status (high or low) corresponding to the magnetic field value.
For positive magnetic fields (south pole) exceeding the threshold B_OP the output is low, whereas for negative
magnetic fields (north pole) lower than B_RP the output switches to high. The output Q1 can be either high or low
depending on the direction of rotation of the pole wheel. This direction information is calculated internally. (see
Table 2-2)
Designed in a new technology, this device offers high voltage capabilities with very small current consumption.
The product can be operated from unregulated power supplies which offers our customers unique freedom of
design for their system.
This product is AEC Q100 certified and enables our customers to build systems for the highest automotive quality
requirements. The product has a TSOP6 package, which is RoHs compliant and fulfills the usual automotive
environmental guidelines.
Application Examples are:
• Window lifter (index counting)
• Power closing (index counting)
• All applications with the need of speed and direction detection.
Figure 2-2 and Table 2-1 show the mapping of a pole wheel with the two corresponding output signals of the
device.
Data Sheet
8
Revision 1.0, 2014-05-13