SC Powertrain products - Semiconductor & System Solutions ... · High linear and ratiometric...

04/28/Page 1

Infineon TechnologiesNgee-Hou TAN

Automotive Sensors

19-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


Gear lever

Current measurement

Chassis height

Throttle valve position

Steering torque

Pedal position

Linear Hall SensorTypical Applications - Focus Applications


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!


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:


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!


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


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


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


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)


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)


Combustion Cycle 4 Stroke Engine

Ignition control and misfire detection


Magnetic Principle for Differential Hall Sensors

H2H1


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


TLE4926 – Dynamic Offset Cancellation


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)


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


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


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


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


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


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


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


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


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!


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


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


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


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


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


Low Power SwitchesSwitching Behaviour

Omnipolar Mode

Only field strength is relevant

Independent of Polarity

(easier magnet assembling)

TLE4917

TLE4913


Low Power SwitchesSwitching Behaviour (Automotive Grade)

Bipolar Mode

TLE4916-1K


Hall Effect Switches Portfolio


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.

SC Powertrain products - Semiconductor & System Solutions ... · High linear and ratiometric...

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