Architecture Trends Body Electronics Infineon Symposium, Sep. 2010 Li Shi Ming Body Application Marketing Manager IFCN, ATV Marketing Team, Shanghai Junction Box Energy distribution ECU x ECU y LOAD Sub ECU x E/E Network
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
Page 2Copyright © 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
Page 3Copyright © 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
Page 4Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 5Copyright © Infineon Technologies 2010. All rights reserved.
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.
Page 6Copyright © Infineon Technologies 2010. All rights reserved.
Platform and Module StrategyStandardization vs. Individualization
August 2010
Dr. Axel Heinrich – Volkswagen AGElectronica automotive conference, Nov. 2008, Munich
Page 7Copyright © 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
Page 8Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 9Copyright © Infineon Technologies 2010. All rights reserved.
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.
Page 10Copyright © Infineon Technologies 2010. All rights reserved. August 2010
“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
Page 11Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 12Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 13Copyright © Infineon Technologies 2010. All rights reserved.
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 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
16/32-bitMicrocontroller
XC2200Family
Power LED DriverTLD 5095ELTLD 5098EL
Daytime Running Light/Position Light
Position SensorTLE 4906
+12V from Battery
August 2010
Page 14Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 15Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 16Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 17Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 18Copyright © Infineon Technologies 2010. All rights reserved.
Small Body Control ModuleEmerging Markets
August 2010
CAN Bus
+12V from Battery
Co
mm
un
icati
on
16/32-bitMicrocontroller
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.
Page 19Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 20Copyright © Infineon Technologies 2010. All rights reserved.
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
8-bitMicrocontroller
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
Page 21Copyright © Infineon Technologies 2010. All rights reserved.
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
8-bitMicrocontroller
XC 800Family
16/32-bitMicrocontroller
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
Page 22Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 23Copyright © Infineon Technologies 2010. All rights reserved.
Contribution of Smart Power Semiconductors1990s Automotive Lighting Module Evolution
August 2010
Body Control Module Evolution @ BMW
Page 24Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 25Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 26Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 27Copyright © 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
Page 28Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 29Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 30Copyright © Infineon Technologies 2010. All rights reserved.
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)
Page 31Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 32Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 33Copyright © Infineon Technologies 2010. All rights reserved. August 2010
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
Page 34Copyright © Infineon Technologies 2010. All rights reserved.
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
Page 35Copyright © Infineon Technologies 2010. All rights reserved.
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