architecture trends body electronics - infineon technologies...architecture trends body electronics....

Architecture TrendsBody Electronics

Infineon Symposium, Sep. 2010

Li Shi MingBody Application Marketing ManagerIFCN, ATV Marketing Team, Shanghai

Junction Box

Energy

distribution

ECU

x

ECU

yLOAD

Sub ECU

x

E/E Network

Copyright © Infineon Technologies 2010. All rights reserved.

Agenda

August 2010

Body Architecture Trends

• Centralized vs. Decentralized Architectures

• Typical System Block Diagrams

• Solutions for Decentralized Electronics

• Power Distribution System

Energy Efficient Networks

• Motivation

• Two Ways to Improve Energy Efficiency of ECUs

• Sample Calculation – How much Energy Can be Saved


Body Electronics / Body Control ModuleChanging the Cost-Benefit Situation

August 2010

In the Past In the FutureTrends

Power BOM Device Cost

Systembenefits

Limited system functionality

Focus on Power BOM / Device cost

Increased complexity, More features

Focus on System cost

UnifiedBCM

PCB space & Pdiss

Flexibility

Diagnostic& PWM

Power BOM Device Cost

Systembenefits


High SophisticatedSystem Architecture

Engine

Trans-mission

BatteryMgmt.

FrontAirbag

SideAirbag

ABS/ESP

Steering

Park Brake

BCM

Backbone / Gateway

ADAS

Camera

RADARLIDAR

Left FrontDoor

Seat

Infotain-ment

Left RearDoor

Right FrontDoor

Right RearDoor

Dashboard

CenterStack

AdvancedChassisControl

Damping

SensorCluster

CANPowertrain

CANAirbag

CANChassis

FlexRayChassis

CANDriver Assistance

CANComfort

LINBattery Mgmt.

IBS

CANInfotaiment

DC/DC

HVAC

CANFlexRay

LIN

MOST

August 2010

This Diagram does not reflect any specific OEM architecture.


Platform and Module StrategyStandardization vs. Individualization

August 2010

Dr. Axel Heinrich – Volkswagen AGElectronica automotive conference, Nov. 2008, Munich

Copyright © Infineon Technologies 2010. All rights reserved. August 2010

Central Body ComputerExample Electronics Architecture

Highbeam65W

Lowbeam55W

Indicator27W

Park10W

Park10W

Indicator27W

Lowbeam55W

Highbeam65W

Option:Fog 55W

Indicator27W

Park orDaylight10W

RightFront Light

Control

Lowbeam55W

Highbeam65W

LEDs

Relay

Interior Light5W, 10W

Exterior Light with LEDs

RightRear Light Control

Brake27W

Indicator27W

Backlight10W Reverse 27W

LeftRear Light

ControlBrake27W

Indicator27W

Backlight10W

Fog 10W Indicator27W

Reverse27W

Brake27W

Backlight10W

Add.5W Out

Backlight10W

Brake27W

Fog27W

Indicator27W

CAN Bus

LIN Bus

LeftFront Light

Control

Option:Fog 55W

Park orDaylight10W

Lowbeam55W

Highbeam65W

Indicator27W

Add.5WOut

Optional Fog2 x 55 W

+12V from Battery

InteriorLEDs

Logic Signals on VBAT levele.g. Switched VBAT Rails

Body Control Module

CAN Bus

Flexray (in future)

CAN Bus

1x..3x LIN Bus

HiC PROFET™

BTS 5012BTS 6133/43BTS 50080-1

HiC PROFET™

BTS 5012BTS 5014/16BTS 6133/43

PROFET™+ 1)

BTS 5020-2BTS 5030-2BTS 5045-2BTS 5090-2

Optional Gateway

SPOCBTS5566, BTS5576,

BTS 5590

PROFET™+ 1)

BTS 5020-2BTS 5030-2BTS 5045-2BTS 5090-2

PROFET™+ 1)

BTS 5180-2BTS 5120-2BTS 5045-2BTS 5090-2

PROFET™+ 1)

BTS 5xxx-2

SPOCBTS 5566, BTS 5576, BTS 5590BTS 5x62, BTS 5x72, BTS 5682

Linear LED Driverwithout Status

BCR 40x

Highside Driver

Su

pp

lyC

om

mu

nic

ati

on

LED

Dri

ver

Low

esi

de D

rive

r

Highside Driver

16/32-bitMicrocontroller

XC2200Family

XC2200Family

System BasisChip

TLE826xETLE82x-2E

Transceiver

TLE 6254-3TLE 6251-2GTLE 6251-DS

SPIDERTLE 723x/4x

SPI LEDBTL5150/6160

HITFET™BTS 3110/18

BTS 3134BTS 3160

Basic LED DriverWith Status

TLE 424x

HiC PROFET™

BTS 5012BTS 6133/43BTS 50080-1

HiC PROFET™

BTS 5016

Linear LED Driverwithout Status

BCR 40x

Further LIN TRXTLE 7259-2GE/U

TLE 7269G

Further CAN TRXTLE 6254-3

TLE 6251-2G

InteriorLEDs

1) In development


Coexistence ofDiscrete and Integrated Power Drivers

BCM with low complexity

BCM with high complexity

Discreteimplementation

Integrated approach

Complexity Market Share Added Features(SPI, Pdiss, PCB, …)

High 30% (trend: ) high value

Mid 40% (trend: ) depends

Low 30% (trend: ) hardly relevant


Wide Range of Scalabilityof Generic BCM Designs

August 2010

Low endcar model

No LED,Bulbs only

Mid rangecar model

LED as option

High endcar model

LED only

One BCM/PCB design but multiple Variants to handle.

http://de.wrs.yahoo.com/_ylt=A0WTf2tb4AFJICIAT3g1CQx.;_ylu=X3oDMTBqaWRlZWhnBHBvcwMxOQRzZWMDc3IEdnRpZAM-/SIG=1j5jgnkng/EXP=1224946139/**http:/de.images.search.yahoo.com/images/view?back=http://de.images.search.yahoo.com/search/images?p=heckleuchte&js=1&ei=utf-8&fr=yfp-t-501&xargs=0&pstart=1&b=19&ni=18&w=160&h=125&imgurl=www.rover.ch/uploads/pics/img_acc_heckleuchte_01.jpg&rurl=http://www.rover.ch/index.php?id=5&L=1&size=6.2kB&name=img_acc_heckleuchte_01.jpg&p=heckleuchte&type=JPG&oid=87c14b2b3629f624&no=19&tt=39&sigr=11a41ckgl&sigi=11k2c740j&sigb=13k833ndo


“Limp Home” FunctionFunctional Safety in Lighting Control

Failure - µC not working

- Vcc not working

- Reset clamped

LIMP Home activated by Hermes

Micro Controller

Indicator

Power Switch,

e.g.

SPOC

Brake

Vcc 5V

SPI, INT, RO, TxD,

RxD (CAN, LIN)

Limp Home

SPI

State Machine

WD

Backlight

TLE8264-2E

PWM

Pulse

LH

LH_PL

LH_SI


ASIL Compliant Requirements in BodyFuture Requirement – Arising Soon

Function ASIL

(ISO 26262)

Failure Reaction

Time (us)

Comment

IGN Switch(Body Computer, Ignition key)

B t.b.d. Failure Critical Event: Unwanted switching off KL15 during driving

Lighting function: Low beam, Front & Rear Turn signal light

B t.b.d. Failure Critical Event: Turn Signal need to be switched off, low beam need to be switched on

Lighting function: High beam, Parking light, Side marker

A t.b.d. Requirements not known

Lighting function: Stop light, Tail light

A ? t.b.d. Requirements not known

Any motor load (window lift, seat, wiper, HVAC etc.)

?? t.b.d. No demand of ASIL so far


Centralized vs. Decentralized ArchitectureLED for Exterior Lighting

n HIDHID

BCM BCMBCM

LED as an optionFor Certain Car Models of

One Platform

LED-onlyFor Certain Car Models of

One Platform

LED-onlyFor All Car Models of

One Platform

n

n

n

RLM RLM

n

n

LIN

FLMHID

FLM

LimpHome

HID

CAN CAN

RLM RLM

LIN

n n

FLM FLM

LimpHome

CAN CAN

LimpHome

DirectBrake

Partially DecentralizedArchitecture

> 2012

Fully DecentralizedArchitecture

>2020

CentralizedArchitecture

Today


GenericDecentralized Front Light Module

Light Levelling

Curve LightStepper

Motor Driver

DecentralizedLight Control Module

M

StepperMotor Driver M

Further LED channels

Beam

Co

ntr

ol

CAN Bus

LIN BusOptional:

Position SensorTLE 4906

Power LED DriverTLD 5095ELTLD 5098EL


Power LED DriverTLD 5085EJ

Headlight Low Beam

Headlight High Beam

Turn IndicatorM

oto

r D

rive

r /

Beam

Co

ntr

ol

LED

Dri

ver

Su

pp

lyC

om

mu

nic

ati

on

System BasisChip

TLE 8261E/-2ETLE 8262E/-2E


XC2200Family


Daytime Running Light/Position Light

Position SensorTLE 4906

+12V from Battery

August 2010


Door Lock Switch

Panel

Window Lift

Door Lock

Window Lift

Switch PanelDoor

LockWindow

Lift

Switch Panel

Door Lock

Switch Panel

Window Lift

Body Architectures BCM/DoorCentralized Architecture

Features:

- Single Central BCM Module

Benefits:

- Fully scalable Functionality

Drawbacks:

- Heavy wiring effort or cars with high functionality

Coverage:

- Low End Cars

- Only few electronic functionsBody Control Module

Low-end MarketsTrend to be replaced

Mirror

Mirror

August 2010


Door Lock Switch

Panel

Window Lift

Door Lock

Window Lift

Switch PanelDoor

LockWindow

Lift

Switch Panel

Door Lock

Switch Panel

Window Lift

Body Architectures BCM/DoorBCM + Door Modules Using CAN/LIN

BCM

Mirror

Mirror

Features:

- Full Featured Door Modules

- CAN or LIN connection to BCM and between Front &Rear Door

Benefits:

- Low wiring harness effort

- Full functional network

- Automatic Door Functions

Drawbacks:

- Expensive

- High end Solution / Low Scalability

Coverage:

- Premium Brands

Fewest Wiring Harness

Front Door Module

Window

Mirror

Lock

Light

Rear Door Module

Window Lock

Light

CAN / LIN

CAN/LIN

CAN/LIN

Rear Door Module

Window Lock

Light

Front Door Module

Window

Mirror

Lock

Light

August 2010


Door Lock Switch

Panel

Window Lift

Door Lock

Window Lift

Switch PanelDoor

LockWindow

Lift

Switch Panel

Door Lock

Switch Panel

Window Lift

Body Architectures BCM/DoorMixed Architecture (DCM + Central Lock)

Door Module

Window

Mirror FOLD

Switch Panel Ctrl

Door Module

Window

Mirror FOLD

Switch Panel Ctrl

Smart WLWindow

Smart WL

Window

BCM

Mirro

r X, Y

, XY, F

old

, Heat

Features:

- Door Modules without Door Lock

- CAN or LIN connection to BCM and between Front & Rear Door

- Smart Window Lift in Rear Door

Benefits:

- Kind of mixed architecture

- Partially scalable

Drawbacks:

- Low scalability @ Front Doors

Coverage:

- Mid Class and Premium ClassVehicles

Mixture of Door Module and Smart Window Lift

CAN / LIN

Mirror

Mirror

August 2010


TLE98xx

Decentralized Body ElectronicsLIN Slave System IC

VREG

8-Bit MCU8051 Core

MDU Coprocessor24..40 MHz

32..64k Flash

PowerDriver

Watchdog

Timer

GPIO HVInp

М

VQFN-487x7mmFootprint

LIN Bus

+12Vfrom

Battery

August 2010

July 27th,2010


Small Body Control ModuleEmerging Markets

August 2010

CAN Bus

+12V from Battery

Co

mm

un

icati

on


XC2200LEFamily

CAN Transceiver

TLE 6250TLE 6251-2G

VoltageRegulatorTLE 46xxTLE 42xx4

Su

pp

ly

DigitalSwitch Monitoring

Analog Inputs

Relays

Room lightFoot light

Key Solenoid

Relay DriverTLE 7240 SL

HITFET™BTS 3110/18

BTS 3134BTS 3160

PROFET ™+ 1)

BTS 5020-2PROFET ™+ 1)

BTS 5020-2

Indicator2x21W + 5W

Highside Driver

I /

O

Indicator2x21W + 5W

InteriorLight

Linear LED DriverBCR 40x

TDK51xx

RKE ReceiverTDA 52xx

315/434/868/915 MHz

Low

Sid

e D

rive

rR

KE

Body Control Module

LED Driver

1) In development

8-bitMicrocontroller

XC800Family

Single CAN connects to Powertrain Electronics

Reduced Number of High Side Switch Loads (e.g. Indicators, Brake)

Many High Current Loads still driven by relays

Optional RKE functionality, interior LED, etc.


Flap #3Control Panel

HVAC Control ModuleFull Automatic Operation

М

HVAC Control Module

6x OptiMOS™IPBxxN04S3-xxIPDxxN04S4-xx

Brushless DCBlower Motor

HeatingElement

VBAT

Shunt Resistor

Su

pp

lyC

om

mu

nic

ati

on

SP

I /

Mir

ror

Co

ntr

ol

SPI

Multi Half Bridges

TLE 84110 EL(5 Flaps)1)

Multi Half Bridges

TLE 84106 EL(3 Flaps) 1)

Sen

sorl

ess

3p

h M

oto

r D

rive

rH

S D

rive

r

3 PhaseDriver IC

TLE 7185E

HiC PROFET™BTS500x0-1EGA

BTS 6143

LIN LDOTLE 8458

Alternatively:LIN Bus

System BasisChip

TLE 7263ECAN Bus 16/32-bitMicrocontroller

XC2200Family

I/O

5V

18

2022

24

26Hall

SwitchTLE4966

0

12

3

4

°C

Hall Switch

TLE4966

+12V from Battery

Flap #2

Flap #1

Hall Switch

TLE4946

Flap #5

Flap #4

Hall Switch

TLE4946

1) In development

М

М

PWMInterface

Option: Remote Blower Motor Module

М

VBAT

XC800

3 Phase Driver ICTLE 7184

Shunt Resistor

VBAT

August 2010


Flap #3Flap #2

Flap #1

Control Panel

HVAC Control ModuleLow to Mid End / Manual + Semi-Automatic

HVAC Control Module

SP

I /

Mir

ror

Co

ntr

ol

SPI

Multi Half Bridges

TLE 84110 EL(5 Flaps)1)

Multi Half Bridges

TLE 84106 EL(3 Flaps) 1)

Mo

tor

Dri

ver


XC800Family

I/O

Hall Switch

TLE4966

0

12

3

4Hall

SwitchTLE4966

Hall Switch

TLE4946

Flap #5Flap #4

Hall Switch

TLE4946

1) In development

М

М

NovalithIC™Power Half Bridge

BTN 7960B

Blower Motor

М

LIN LDOTLE 8458

LIN Bus

+12V from Battery

Optional:CAN Bus

CAN TransceiverTLE 6254-3

TLE6250TLE 6251-2G/DS

Optional:VREG

TLE42xx

Su

pp

lyC

om

mu

nic

ati

on

LS D

rive

r

HITFET™BTS 3405

FurtherHigh Current Loads:

Heater, A/C on,Defrost etc.

Same Loads as in High-End Systems / Same Devices Appocable

Low Cost Microcontroller

August 2010


LIN LDOTLE 8458

Door ModuleFull Door Functionality

LIN BusМ

М

М

MirrorPosition

MirrorFlap

Door Module

Left &Right

Up & Down

MirrorHeating

Interior LightPuddle Lamp

5W, 10W

Interior LightPuddle Lamp

(Rear Door only)

Front DoorOnly

NovalithIC™Power Half Bridge

BTN 7960B

Power Window

Position Sensor

TLE 4966


XC 800Family


XC2200Family

System BasisChip

TLE 8261E/-2E

Su

pp

lyC

om

mu

nic

ati

on

CAN Bus

Mo

tor

Dri

ver

DoorLock

Lam

p D

rive

r

Mirror Power ICTLE 8203E

Multi Half BridgesTLE 6208-3

SP

I /

Mir

ror

Co

ntr

ol

SPI

SPI

PROFET™+ 1)

BTS 5120-2BTS 5180-2

TrilithICBTM 7740G

+12V from Battery

М

М

1) In development

August 2010


Main Wire harness of Power Distributionis getting more volume/ weight and complex

Dr. Wulf BramesfeldFreudenberg NOK Mechatronics GmbH & Co. KGElectronica automotive conference, Munich 2008

August 2010


Contribution of Smart Power Semiconductors1990s Automotive Lighting Module Evolution

August 2010

Body Control Module Evolution @ BMW

http://images.google.de/imgres?imgurl=http://totalweek.files.wordpress.com/2007/08/bmw-logo.jpg&imgrefurl=http://totalweek.wordpress.com/2007/08/&h=758&w=764&sz=56&tbnid=TbNKnh9gVrdP-M:&tbnh=141&tbnw=142&prev=/images?q=bmw+logo&um=1&start=2&sa=X&oi=images&ct=image&cd=2


Vehicle Power Distribution ArchitectureSplit into Various Applications

August 2010

Junction Box

Energy

distribution

ECU

x

ECU

yLOAD

Sub ECU

x

Power Distribution architectures are the same

in conventional, hybrid or electric vehicles 12 V Power Net part

Picture from Hella

Smart Integrated Pre-fuse Box

Single LoadRelay

Picture from Tyco

Pic

ture

fro

m A

uto

Kabel

Battery Disconnect

Pic

ture

fro

m L

earJunction/Pre-Fuse Box

Picture made in Sixt rental Suzuki SX4

Power Distribution Center,Relay and Fuse Box

One or two Batteriesin front or rear of the car

Battery Link andPower Control Switch

http://www.keefeperformance.com/pics/kp75-552.jpg


SMART Power Distribution - Enabling Technology forEnergy efficiency, Reliability and functionality

Energy Efficiency Reliability Functionality

Maintenance Cycles(Including Reset Ability)

Module volume(Space enabler)

Module flexibility(Location)

Module handling(Waterproof)

Scalability/ Modularity

Material weight

* device* module* wire harness

Energy Consumption

* Power dissipation* Driving current* idle mode

Cost down on system level under lifetime consideration

Stop – Start( > 500 k cycles)

On-board diagnostic(Short circuit detection)

Reaction time

(switch off speed)

Robustness

(vibration, shock)

Secure disconnect

Junction Box

Energy

distribution

ECU

x

ECU

yLOAD

Sub ECU

x

2

SMART Power Distribution is the enabler for


Relay + Fuse Replacement by Power PROFETTM

Relay Replacement by Infineon® Connect FET

Module avec C_FET.vsd

LOGIC

BTC5000x

Infineon® Connect FETReplacement of the relay only

connectswitch

Lead Type (1.0 mΩ)Engineering

Samples available

Lead Type (1.5 mΩ)Engineering

Samples available

Master: BTC 50010-1TAA SOP Apr 2011Master: BTS 50015-1TAA SOP Dec 2010

Chip-On-Chip Technology

Power PROFETTM

Replacement relay + fuse


Agenda

August 2010

Body Architecture Trends

• Centralized vs. Decentralized Architectures

• Typical System Block Diagrams

• Solutions for Decentralized Electronics

• Power Distribution System

Energy Efficient Networks

• Motivation

• Two Ways to Improve Energy Efficiency of ECUs

• Sample Calculation – How much Energy Can be Saved


100 W (elektr.) 0.1 /100km

50 kg 0.1 /100km

1 /100km Gasoline 23.6 g CO2/km

1 /100km Diesel 26.5 g CO2/km

1 g CO2/km 40 W (elektr.)

1 g CO2/km 20 kg

CO2

1 g CO2/km

40 W 20 kg

or

Energy Efficiency and CO2 Emission Impact of Electric Power and Weight

Source: VDI Conference „Elektronik im Kraftfahrzeug“, Baden-Baden 2007


Semiconductors Contribute toEnergy Efficiency in Nearly Every ECU

– 60%

+

= +

=

IN LOSS OUT= +

2W

1W

1W

0.2WDC / DC Regulator

Linear Regulator

+

3W

1.5W

4.5W– 70%

Voltage Supply Efficiency

Example: 5V, 200mA

60% less input power

Power Switching Efficiency

Example: 14V, 20A

70% less switching losses


Motivation

August 2010

How To Enhance Vehicle Efficiency when Car Drives

Partial Node Deactivation Complete Deactivation of unused ECU„s

Scalable Functionality Dynamical Adaptation of ECU Performance

IGN off – Car in Sleep Mode

Source: http://images.google.de

IGN on – Car runs

Source:Infineon AG

Target: Sleep mode current <100 µA per ECU

No Bus traffic, Wakeup events possible

Remote Keyless Entry

Inquiry of Switch Panels

Target Parameter Performance / Functionality

Current Consumption –Not Yet a Constraint

Permanent Network Traffic

Total Car Current Consumption:

~ 5..20 mA

Total Car Current Consumption:

~ > 10 Amps(without any loads)

http://images.google.de/


Energy Efficient NetworksDifferent Ways to Save Energy

Affected Products

- Standalone CAN Transceiver

- System Basis Chip

Challenge

- Standardization of Wakeup CAN message

Market

- Mid-/high end vehicles, world-wide

Partial Node Deactivation Scalable Functionality

Affected Products

- Microcontroller

Challenge

- Implementation across µC families

Market

- Mid-/high end vehicles, world-wide

Microcontroller

CAN-Controller

SCI

INT Handling

Power Supply

SPI

CPU I/O Function

LocalWakeup

CAN TRX

KL30

CAN CAN-TRX

LogicLocal

Wakeup

VREGRegulator

Inhibit

WK

RX

INH

VS

TX

NERR

Vo

Vcc

VS

ENNSTB

INH

CANL

CANH

Vµc


Current ECU Operating ModesNo Energy Efficiency while Car is Driving

100mA

100µA

1mA

10mA

maxoperation

activestop over

slowdown

passivestop over

off

standby

ECU in Normal ModeMicrocontroller runs with full speed/performance

ECU in Standby Mode or off (KL30 on / KL15 off)No Function, No Communication, Wakeup Possible


New Operating ModesReducing Energy Consumption

100mA

100µA

1mA

10mA

maxoperation

activestop over

slowdown

passivestop over

off

standby

Reduced (Scalable) Performance

No ECU Function, Communication activeNo Loss of Bus Messages

Fast Wakeup, if µC standby

No ECU Function, Communication in StandbyWakeup message Required Slow Wakeup, if µC off

ECU in Normal ModeMicrocontroller runs with full speed/performance

ECU in Standby Mode or off (KL30 on / KL15 off)No Function, No Communication, Wakeup Possible


Scalable Current ConsumptionExample: XC228xM Family

August 2010

Current(mA)

0

10

20

30

40

50

60

30 50 60 70 804020100

Frequency(MHz)

ON ON ON ON

ON ON OFF OFF

IDLE ON MultiCAN Only CAN Only

Theoretische Kurve: I_SACT [mA] = 10+0,6*f_sys (ohne Pads)

IDLE OFF OFF OFF

IDLE OFF MultiCAN Only CAN Only

IDLE ON OFF OFF

CPU Flash Peripherals Pads

Chart based onmeasurements


Example Calculation / Use Case AnalysisTotal Current Consumption

August 2010

8 A

4,3 A

Status Quo

All ECU run w/ full performance

30 % Partial Network Capable ECU(µC off)

30 % Partial Network Capable ECU (µC in STOP or IDLE mode)

30 % Scalable Performance(half average consumption)

5,5 A

Assumptions: Network with 40 ECUs. Average Current Consumption per ECU 200mA. ECUs with scalable performance save 50 % (half average current consumption).Partial Network Mode: Capable ECUs remain 95% of run time in partial network mode with a current consumption of 1mA (µC off) resp. 10mA (µC in STOP or IDLE).

CO2

- 1,2 g/kmCO2

- 0,9 g/km

architecture trends body electronics - infineon technologies...architecture trends body electronics....

Documents