Infineon produces angle sensors for automotive applications such as steering angle detection and brushless DC motor position sensing. The sensors use integrated Magneto Resistive (ixMR) technology to detect the angle of a magnet and output either analog sine/cosine waves or digital angle values. Infineon's angle sensor portfolio includes high accuracy products calibrated to within 1 degree and offering fast update rates up to 43 microseconds for applications such as electric power steering.

1. Infineon Angle Sensors
For Automotive Applications

2. Angle Sensors at a glance
An Angle Sensor…
 detects the angle of a magnet
 is factory calibrated
 is ideal for Steering angle and
Brushless DC motors
 is available with analog or
digital outputs
2013-06-26
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 2

3. Angle Sensor based on integrated Magneto
Resistive (ixMR) Technologies
Infineon Angle Sensors
ixMR Technologies
GMR
 The sensor detects the
orientation of an applied
magnetic field by measuring
sine and cosine angle
components with monolithically
integrated magneto resistive
elements
 Magneto resistive technology is
now widely used in automotive
applications such as Steering
angle, Electric Power Steering
(EPS) and Throttle
AMR
Hexternal
M

I
Permalloy
80% Ni / 20% Fe
 Inplane
sensitivity
 High sensitivity
 Low Jitter
 3600 angle
range
 For fields up to
80mT
 Monolithically
integrated in
CMOS, BiCMOS
Copyright © Infineon Technologies AG 2013. All rights reserved.
 Inplane
sensitivity
 High sensitivity
 Low Jitter
 1800 angle
range
 Medium field
range
 Monolithically
integrated in
CMOS, BiCMOS
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4. Infineon´s ixMR technology is fast and
robust against Mechanical Tolerances
Improved
tolerance to
misalignment
High speed
2013-06-26
The ixMR element senses a field’s direction, not
intensity. Variations in field intensity within the sensor’s
range therefore have minimal impact on angle accuracy
The area sensitive to ixMR is very small. Therefore it is
easier to keep it within the homogenous zone of the
magnetic field in case of small mechanical failure.
Infineon
Angle Sensor
Low
Sensitivity to
air gap
variation
ixMR technology is extremely fast. Its speed is not
limited by the reaction time of the MR element but by
delay in the amplifier circuit
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 4

5. More than a Sensing Element:
Integrated and calibrated Angle Sensors
 Monolithically integrated
Magneto Resistivity sensing
element for better reliability
and cost
 High update rate up to 43µs
(23kHz) for Motor
commutation applications
 Incremental interface output
for easy replacement of
optical encoders
2013-06-26
 Factory calibrated for best
accuracy over temperature
Infineon
Angle Sensors
 Unambiguous output over
3600 allowing better motor
control and noise
performance
 Up to two parallel interface
for optimal safety concept
integration
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 5

6. Angle Sensor for Automotive Applications
Brushless DC Rotor Position Sensing (e.g. EPS, Actuators)
An angle sensor on the shaft of a
Brushless DC motor allows to replace
the resolver for lower cost solution
Sensor Requirement
Fig: Angle sensor acting as rotor position sensor example
 360O range
 Low delay
Infineon Solution
 Dual die for redundancy
 Two interfaces operating in parallel
 TLE5009
 High accuracy through internal autocalibration
 TLE5012B
2013-06-26
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 6

7. Angle Sensor for Automotive Applications
Steering Angle
Nonius Principle measure more
accurately than could be done by
reading a uniformly-divided straight or
circular measurement scale. For
Infineon, this principle allows to
measure the steering angle over
several turns and provides some
redundancy for safety purposes
180
160
140
120
100
80
60
40
20
0
0
200
400
600
800
1000
1200
1400
Fig: Nonius scale
Sensor Requirement
Fig: Steering angle calculation example using Nonius Principle
 360O range
 Low delay
Infineon Solution
 Low cost
 Functional safety features
 TLE5009
 Calculated angle
 TLE5011
 PWM/SPC interface
 TLE5012B
2013-06-26
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 7

8. Product Portfolio: From single analog to
complex digital sensors
Bloc Diagram
Interface Type
Output Format
IFX Solution
0110100
Digital angle
0110100
Digital sin/cos
TLE5011
Analog sin/cos
TLE5009
1101010
2013-06-26
TLE5012B
Copyright © Infineon Technologies AG 2013. All rights reserved.
TLE5109
NEW
Page 8

9. TLE5012B: 3600 Digital Angle Sensors
Key features
 Designed for 3.3V & 5V systems
 15bit absolute angle resolution
 42µs update-rate of calc. angle
 SPI with 8Mbit/s
 Interfaces: HSM, IIF, SPI, PWM, SPC
Description
 Unambiguous detection on measurement
over 360º angle range
 ≤1° angle error over all
 Automotive qualified (-40°C /150°C)
Application
 Smallest angle error over lifetime and
temperature
 Integrated angle calculation
 Rotor position sensing for electric motor
commutation
 High update rate and resolution  best
for dynamic applications
 Steering angle sensing
 Two parallel interfaces available
 General angular sensing
 Extended range of safety features
2013-06-26
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 9

10. TLE5011: 3600 Digital Angle Sensors
Key features
 Designed for 3.3V & 5V systems
 360° angle range
 16 bit sin/cos values
 Interfaces: SSC (SPI) upto 2Mbit/s
 Internal diagnostics
 Automotive qualified (-40°C /150°C)
Description
 Unambiguous detection on measurement
over 360º angle range
 Digital, 16 bit sine/cos output
Application
 Rotor position sensing for electric motor
commutation
 Steering angle sensing
 Integrated data processing
 High update rate and resolution  best
for dynamic applications
 Extended range of safety features
 Valve or flap position sensing
2013-06-26
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 10

11. TLE5009: 3600 Analog Angle Sensors
Key features
 Analog output of sine and cosine
 Constant amplitude over temperature
 Built in offset temperature compensation
 ~9µs delay time
Description
 ≤3° angle error
 Unambiguous detection on measurement
over 360º angle range
 Up to 30,000rpm
 Automotive qualified -40°C /150°C
Application
 Steering angle
 Brushless DC motor commutation
 Rotary switch
 General angular sensing
2013-06-26
 Preamplified signals  no additional
amplifier necessary
 Temperature compensated amplitudes 
use of full ADC-range over temperature
 Single ended and differential analog
output  independent of used µC
 Diagnostic functions  improve of safety
level
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 11

12. TLE5109: 1800 Analog Angle Sensors
NEW
Key features
 Analog output of sine and cosine
 Constant amplitude over temperature
 Built in offset temperature compensation
 ~9µs delay time
Description
 ≤1.2° angle error
 Unambiguous detection on measurement
over 180º angle range
 Up to 30,000rpm
 Automotive qualified 125°C
Application
 Steering angle
 Brushless DC motor commutation
 Rotary switch
 General angular sensing
2013-06-26
 Preamplified signals  no additional
amplifier necessary
 Temperature compensated amplitudes 
use of full ADC-range over temperature
 Single ended and differential analog
output  independent of used µC
 Diagnostic functions  improve of safety
level
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 12

13. Infineon Sensors – Making lives easier,
safer and more comfortable
Infineon Angle Sensors
 Infineon has already established a very strong position in the
automotive sector with the broadest magnetic sensor portfolio in the
market
 We have shipped over 2 billion magnetic sensors to customers in the
automotive, consumer and industrial application sector
 Angle sensor detects angle based on Monolithically integrated Magneto
Resistive (iXMR) technologies for better reliability and cost
 Factory calibrated angle sensors for down to 1.00 accuracy
 Angle sensors for automotive applications such as Steering angle,
Brushless DC rotor position steering
 We offer various products featuring analog or digital outputs
2013-05-02
Copyright © Infineon Technologies AG 2013. All rights reserved.
Page 13