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Page 219-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Smart Sensors for Engine Mgmt.
+ surface micro machining
+ single chip integration of
pressure sensor element,
signal cond., calibr. & interf.
+ end-of-line programmable
+ diagnosis functions
+ fully compensated
accuracy 1.5%
+ ratiometric analog output + integrated sensor element,
signal cond., calibration & interface in one chip
+ small SMD package
Crankshaft Speed & Position
+ self calibrating
+ output protection
+ low voltage supply (3,3 V)
+ discrete capacitors in the package
+ low latency & jitter (phase error)
+ self calibrating, + true power on
+ low voltage supply (3.3V)
+ discrete capacitors in the package
+ TIM (Twisted Independent Mounting)
+ Customizable to various magnets and target wheels
+ end of line programmable
Camshaft Position
Manifold Air Pressure
Throttle, Pedal, Valve Position+ Linear Magnetic Hall-Effect Sensor
+ end-of-line programmable
+ linear ratiometric output
+ broken wire detecion
+ excellent accuracy
+ slim package
Barometric Air Pressure
cooling fan
air conditioning
EGR
inje
cto
r
catalytic
converter
air
te
mpe
ratu
re
camshaft
reference
water
temperature
crankshaft
hig
h p
ressure
pum
p
Ma
nifo
ld a
ir p
ressure
Spa
rk
ElectronicThrottle
Upstr
ea
m
pro
po
rtio
na
l
lam
bda
se
nso
r
do
wnstr
ea
m
lam
bda
se
nso
r
Knock
sensor
Secondary
Air
Canister
purge
fuel level fuel pump
Pedal
ba
rom
etr
ic a
ir p
ressure
thro
ttle
po
sitio
n
Page 319-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Gear lever
Current measurement
Chassis height
Throttle valve position
Steering torque
Pedal position
Linear Hall SensorTypical Applications - Focus Applications
Page 419-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
TLE4997 Features
High linear and ratiometric push-pull rail-to-rail output signal 20 bit Digital Signal Processing Digital temperature compensation 12 bit overall resolution Programmable parameters stored in redundant EEPROM (single
bit error correction):– magnetic range and magnetic sensitivity (gain)
– zero field voltage (offset)
– Bandwidth
– polarity of the output slope
– clamping option
– temperature coefficient for all common magnets
– memory lock
Re-programmable until memory lock Continuous measurement ranges between -200 mT and
+200 mT Digital readout of internal temperature and magnetic field
values in calibration mode
For internal use only!
Page 519-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
A D +
X
X
+
X
TC2
-T0
TC1
TemperatureCompensation
TemperatureSensor
1
TLE4997 signal flow diagram
D A
Stored inEEPROMMemory
+X
A D
HallSensor
Limiter(Clamp)
outX
Range LP
LPDAC
Offset
Gain
202011)( TTTCTTTCTS DSP calculates:
Page 619-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
TLE4998xx Features
Digital output PWM (12 bit) or SENT (16 bit)
Slim green package: PG-SSO-4-1 (1mm)
Full Digital Signal Processing
2nd order temperature compensation in DSP
Mechanical stress compensation in DSP
Reverse polarity, overvoltage, output short circuit protection
On Board Diagnosis (OBD): Broken wire detection, undervoltage and
overvoltage detection
Programmable parameters stored E2PROM:
– Magnetic field range ±50/±100/±200 mT (bipolar/unipolar/inverted)
– 2nd order temperature compensation
– Offset ±100%
– Sensitivity (gain) PWM ±0.2 to ±6 %/mT, SENT ±8.2 to 245 LSB/mT
– Clamping levels 0% to 100%
– Low pass filter selectable from 80Hz to 1.3kHz
– PWM update rate 125/500/2000 Hz
For internal use only!
Page 719-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Actual SmCo with older compensation technique
y = 6.548E-07x2 + 9.059E-05x + 2.225E-01
0.21
0.215
0.22
0.225
0.23
0.235
0.24
0.245
-50 0 50 100 150
Vout
sensor TC
final transfer curve
Poly. (Vout)
% error
-0.27
0.12
0.01
-0.46
-1.03
-1.85
-3.20
-4.58
Page 819-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Actual SmCo with Advanced 2nd order compensation
y = 6.548E-07x2 + 9.059E-05x + 2.225E-01
0.21
0.215
0.22
0.225
0.23
0.235
0.24
0.245
-50 0 50 100 150
Vout
sensor TC
final transfer curve
Poly. (Vout)
% error
-0.02
0.12
0.01
-0.14
-0.03
0.14
0.08
-0.08
Page 1019-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
CAM signal is used for valve control, TPO function and improved phase accuracy gives improved cold start performance (emission)
Variable adjustment of angle between intake/outtake valve allows optimized fuel consumption and improved emission increases the number of sensors (up to 4)
Limp home mode: CAM sensor is replacing damaged Crank sensor
Active sensor specific Low voltage supply (during cranking) 3 wire interface Phase accuracy TPO with programming end of line
Active Camshaft Sensors Demands
cooling fan
air conditioning
EGR
in
jecto
r
catalytic
converter
air
te
mp
era
ture
se
nso
r
camshaftreference
water
temperature
crank shaft
sensor
hig
h p
ressu
re p
um
p
pre
ssu
re s
en
so
r
Sp
ark
Electronic
Throttle
up
str
ea
m p
rop
ort
ion
al
lam
bd
a s
en
so
r
dow
nstr
eam
lam
bd
a s
en
so
r
knock
sensor
Secondary
Air
Canister
purge
fuel level
sensor
fuel pump
Pedal 1
Pedal 2
cooling fan
air conditioning
EGR
in
jecto
r
catalytic
converter
air
te
mp
era
ture
se
nso
r
camshaftreference
water
temperature
crank shaft
sensor
hig
h p
ressu
re p
um
p
pre
ssu
re s
en
so
r
Sp
ark
Electronic
Throttle
up
str
ea
m p
rop
ort
ion
al
lam
bd
a s
en
so
r
dow
nstr
eam
lam
bd
a s
en
so
r
knock
sensor
Secondary
Air
Canister
purge
fuel level
sensor
fuel pump
Pedal 1
Pedal 2
Page 1119-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Mappings of a CAM wheel over airgap
20
30
40
50
60
70
80
0 60 120 180 240 300 360
AG=0.2
AG=0.5
AG=1.0
AG=1.5
AG=1.8
AG=2.5
AG=3.0
(mT)
(deg)
Page 1219-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Normalized of all airgaps
#3
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
0 50 100 150 200 250 300 350
Normalised 0.2
Normalised 0.5
Normalised 1.0
Normalised 1.5
Normalised 1.8
Normalised 2.5
Normalised 3.0
(deg)
Page 1419-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Combustion Cycle 4 Stroke Engine
Ignition control and misfire detection
Page 1519-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Magnetic Principle for Differential Hall Sensors
H2H1
Page 1619-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Specifically designed for crankshaft-position detection: Low jitter Low voltage supply 3.3V
Self calibration algorithm
Advanced switching concept
3-wire open drain voltage interface
Output protection (temperature & short circuit)
No external components required
PG-SSO-3-9 package option with
two 4.7 nF capacitors
PG-SSO-3-6
PG-SSO-3-9
TLE4926CMain Features
Page 1719-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
TLE4926 – Dynamic Offset Cancellation
Page 1819-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
GMR (Giant Magneto Resistive Effect)
Detected 1988 by Peter Grünberg / Albert Fert Quantum mechanical effect Requirement for GMR: layer in range of nm Alternating layers (ferromagnetic- nonmagnetic) 6 - 8 % Resistance change at RT in sandwich
(up to 100% in Multilayer)
Page 1919-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
TLE5025CiGMR Crankshaft Sensor
Giant Magnetic Resistance based principle
Single chip solution
Dynamic self calibration principle
Large operating air gaps
High sensitivity, low jitter
Fast power-up time
Digital output signal (voltage interface)
Module style package with two integrated capacitors
4.7 nF between Q and GND
47 nf between Vs and GND: Needed for micro cuts in power
supply
PG-SSO-3-9
Page 2019-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
TLE5027CiGMR Crankshaft Sensor
Giant Magnetic Resistance based principle
Single chip solution
Dynamic self calibration principle
Large operating air gaps
High sensitivity, low jitter
Fast power-up time
Rotation direction detection
Three wire PWM open drain voltage interface
Module style package with two integrated capacitors
4.7 nF between Q and GND
47 nf between Vs and GND: Needed for micro cuts in power
supply
Page 2119-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Advantages of I-GMR crank
Improved repeatability and phase accuracy
Low drift over temperature JitterHall
25 µT @ RT, Bpp=5 mT
GMR5 µT @ RT, Bpp=5 mT
Improvement by thefactor of 5
TLE5027(C)I-GMR Crankshaft
Slim module parallel to x/z pane
Page 2319-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Example CVT
Transmission Sensors
Transmission
speed sensors
located in sensor
domes, some of
them with direction
detection
TLE4953C
TLE4941C
TLE4928C
Hall switches to detect the chosen gear
(position sensor) TLE49x5, TLE49x6 High
pressure
sensors
Temperature
sensors
KY-xx
Page 2519-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
upstr
eam
lam
bda
sensor
dow
nstr
eam
lam
bda s
ensor
cooling fan
air t
em
pera
ture
purg
e
air conditioning
EGR
fuel pump relay
pre
ssure
sensorair by
pass
auxilirary
air
fuel level
sensor
throttle
position
camshaft
reference knock
sensor
water
temperature
injector
crank shaft
sensor
Spark
KP115 Integrated Pressure Sensor IC (Bare Die)Application: Manifold Absolute Pressure Sensing (MAP)
KP2xx
MAP
sensor
Page 2719-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
KP125 Integrated Pressure Sensor IC (SMD Package)Application: Barometric Air Pressure Sensing (BAP)
KP125 - Proposed Application CircuitryECU – Engine Control Unit
µ-Processor
A/D
R2
R1
+5V5
7
6
8
3
2
4
KP125
C1
C2
C3
Page 2919-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
轮输传感器要求
无源传感器
old fashioned 电感线圈 1 Hz... 4 kHz Extreme voltage range: Amplitude 60mV ... 100V
“Standard” AWSS 标准有源传感器
50% DC (40/60 %) 7/14 mA (5/10 mA)
AWSS with direction 方向检测
PWM modulation Pulse length 90µs (Left) 180µs (Right)
VDA Sensors
3 level sensors 7, 14, 28mA Data Manchester coded
Page 3019-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
英飞凌用于汽车安全应用的霍尔传感器
轮速传感器
TLE 4941 : 高精度紧凑型速度传感器
TLE 4941-1 : 可测首信号的速度传感器
TLE 4942-1 : 可通过PWM信号测量速度、方向、气隙宽度的速度传感器
TLE 494xC : C代表外接1.8 nF电容
TLE 4947-1(C) : TLE 4941-1的高静电兼容性版本
Page 3119-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
英飞凌侧安全气囊压力传感器KP108
Pressure Satellite Location
Pressure Sensor SystemKP108
Leading Devicefor very fast
Side Crash Detection!
Page 3219-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
电子动力转向系统方块图 EPS
16 or 32bit
µC
B6-Driver
IC
1-3 Opamps
Protection
Diagnosis
160A
MOSFET
6x
1 to 3
shunts
PMSM
with
rotor position
sensor
Supply µC
Supply Sensors
Torque
Sensors
HS CAN
Transceiver
Sensor signal
conditioning
Supervision of
Control-loop
Window
watchdog
Relay
control
ECU
•Vehicle speed
•Steering angle
Diagnostic
Page 3319-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
英飞凌角度传感器感应原理
GMR
X
GMR
Y
ADC
Angle
Calc.
Post
Process
Post
Process
Map-
ping
Angle
ADC
Magn.
Field
VX
VY
X-Component(COS)
Y-Component(SIN)
V
Angle
90° 180° 270° 360°0°
VX
(COS)
VY
(SIN)
VDDG
GNDADCX+
GMRResistors
ADCX- ADC
Y+ ADC
Y-
VX
VY
90°
0°NS
N
S
Page 3419-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
GMR 角度传感器系统构造
Gain
Offset
Correct.
X
Gain
Offset
Corretc.
Y
Angle
Offset
>1
1b
it>
11
bit
>1
2.6
bit
>1
2.6
bit
CORDIC
atan(y:x)Angle
Programmable Logic Part (µC)
further
proces
sing
SSC
IF
(SPI)
UART
IF
CAN
IF
Application
Specific
>1
1b
it>
11
bit
e.g. Infineon XC886
- 8051 compatible (E-WARP)
- Cordic and MDU
- PWM, SPI, UART, CAN
COMB-
Filter X
3.Ord.
COMB-
Filter Y
3.Ord.
Magn.
Field
dif
f_
an
alo
g
1b
it1
bit
>1
0b
it>
10
bit
-ADC
2.Ord.
X
-ADC
2.Ord.
Y
GMR
Bridge X
GMR
Bridge Y
dif
f_
an
alo
g
FIR-
Filter X
1.Ord.
>1
1b
it
FIR-
Filter Y
1.Ord.
>1
1b
it
Sensor Frontend (ASIC)
ARCTAN calculation in external µC
Calibration Data stored in µC
Page 3619-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
TLE 49x6Overview
Applications Position / proximity indicator Rotational indexing Brushless DC motor Gearwheel position sensing
Features Chopped Hall Probe for high
sensitivity and stability of magnetic switching points
Active Temperature Compensation(active trip point adaptation over temp)
Open collector and 2-wire current interface output versions
Double Hall Switch(with direction information)
Operating temperature up to 175°C (peak)
Enhanced ESD performance Reverse polarity protection
Benefits Best performance / price
ratio! High resistance to mechanical
stress due to Active Error Compensation
SMD and leaded packages
Availability In production Support: data sheet samples product presentation application notes
Page 3719-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Low Power Switches
Optimized Design for Low-Power Applications
AET02802-17
IS
t
ISAVG
ISSTB
OperatingTime
Standby Time
LatchOutput
top
50 ms
tstb
130 ms
ISOPAVG
Page 3819-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Low Power SwitchesSwitching Behaviour
Omnipolar Mode
Only field strength is relevant
Independent of Polarity
(easier magnet assembling)
TLE4917
TLE4913
Page 3919-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Low Power SwitchesSwitching Behaviour (Automotive Grade)
Bipolar Mode
TLE4916-1K
Page 4019-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
Hall Effect Switches Portfolio
Page 4119-Aug-10 Copyright © Infineon Technologies 2006. All rights reserved.
结论 Conclusion
Infineon offers a variety of digital and analog Sensors for multiple physical parameters such as.. 磁场 magnetic field
温度 temperature
气压 pressure
位置 position
距离 distance
方向 direction
速度 speed
These Sensors are ideally suited for automotive, industrial and consumer applications.