VW80808 - Basics€¦ · • MLCC portfolio that meet ⏤12V batterie application ( Terminal 30) ⏤ low voltage 5V, 3.3V and even lower • Usage of Polymer capacitors • ESD •

©KEMET Corporation. All Rights Reserved.

Part 1

VW80808 - Basics


Agenda

2

• Standard / Normativ Landscape and VW80808• Lifetime• Failsafe strategy


Cross view on automotive standards

• LV124 – Document of the working group• BMW GS 95024-2-2 • Daimler MBN 10615 ( MBN = Mercerdes Benz Norm)• Porsche ( in the meantime part of VW)• VW 80000

3


Why VW

• VW sold 10.92 Miilion cars in 2019• Assume an average of 10.000 capacitor in a car• Annual consumption is 100 Billion pieces• This is twice our annual production capacity


The landscape

AEC-Q200 REV D STRESS TEST QUALIFICATION FOR PASSIVE COMPONENTS

ISO 7637-2 Road vehicles – Electrical disturbances by conducting and coupling

LV124 requirements, test conditions and tests for electric, electronic and mechatronic components and systems for the use in motor vehicles up to 3,5 t

LV148 Electric and electronic components in motor vehicles 48V power supply

TL 81000 Electromagnetic Compatibility of Electronic Components for Motor VehiclesEMC changes

VW 80000 Electric and Electronic Components in Motor Vehicles up to 3.5 tGeneral Requirements, Test Conditions, and Tests

VW80303 Electrical Characteristics and Electrical Safety of High-Voltage Components in Road Vehicles ( 400V and 800V)

VW80808-1 Requirement ComponentRequirement Qualification

VW80808-2 Requirements and Use – Part 2 Appendix A (normative) Qualification of MLCCs with soft termination


VW standards

• Available on the online portal• https://www.vwgroupsupply.com/• Application is ONNO = ONline Normen• We do NOT handout any digital or paper copy

https://www.vwgroupsupply.com/


What is VW80808

• Electronic Components and Assemblies in Electrical and Electronic Parts in Motor Vehicles up to 3.5 t

• Requirements and Use – Part 1• Requirements and Use – Part 2 high level of details Appendix A ( flexterm)• Part 2 depend on part 1

Main aspect for is :• protect the electrical system from mail function and a short between battery and chassis


Electrolytics


Section 9.2.3 Electrolytics

1) Use of Electrolytic capacitor based on water is not permiited2) For certain application Lifetime has to be proofed – ELC = lifetime calculator

KEMET automotive families are NOT waterbased

9

ALA7(85°C), ALA8(105°C) PEG22x, PE PEH22x

Snapin Axial Radial ( crown)

400V DC/DC and OBC 48V application 48V application


Lifetime

10


Make sure you use the right formula

11


electrolytic lifetime calculator – Mission profile

12


Tips on the lifetime calculator

• Select the partnumber• Click on EDIT and SAVE Buttons• Timefraction MUST be 100%

13


Data import / export Excel format

14


Why failsafe strategy

• The batterie can provide hundred‘s of Ampere • In case of a short capacitors all current run thr+u teh damaged capacitor• Part will get very hot ( ceramic) or ignite (Tantalum. Electrolytic)

15


Electrical Pulse Tests - VW8000 - §7

www.spitzenberger.de © Spitzenberger & Spies 2014

http://www.spitzenberger.de/


E-05 Load dump

17

• Load dump means the disconnection of a powered load.• large voltage spikes from the inductive generator(s)• Test condition : a = Unsurpressed, b = surpressed


Load dump

• Peak voltage up to 120V / 40ms• Typically Clamped to 40V in 12V systems and 60V/24V Systems

18


AEC-Q200 versus VW80808

19


AEC-Q200 Test & Change Control

20

AEC-Q200Test No. Test Name AEC -Q200 Test Conditions

1 Pre and Post Stress Electrical Test Customer Defined Criteria

2 High Temp. Exposure (Storage) 150C +/-3C for 1000 hours

3 Temp. Cycle -55C to 125C for 1000 cycles

4 DPA Per EIA-469

5 Moisture Resistance Steady state humidity (80-98%) cycling between 25C and 65C, for 20 cycles, 8 hrs. per cycle

6 Biased Humidity 85C, 85% R.H. for 1000 hours, rated voltage applied and 1.3V applied

7 Operating Life 125C for 1000 hours rated Voltage applied

8 External Visual Visual Inspection

9 Physical Dimensions Within Specified Dimensions

10 Resistance to Solvents Mil-Std 202/Meth 215

11 Mechanical Shock Three shocks/three axis half sine wave of 1800g, duration 0.5ms

12 VibrationThree axis of simple harmonic motion between 10Hz to 2.0khz and back to 10Hz of amplitude 1.5mm for 20 minutes.

13 Resistance to Solder Heat

Solder immersion @ 260C for 10+/-1seconds

14 Thermal Shock -55C to 125C for 300 cycles, with 20second (max) transfer time

15 ESD Per AEC-Q200-004 for ESD classification.

16 Solderability Three methods noted

17 Electrical Characterization Measure Cap/DF/IR

18 Board Flex 2mm flex requirement

19 Terminal Strength Static side pressure of soldered capacitor of 18N force for 60 seconds

20 Beam Load Test Static Load test of varying force (based on chip size)


Qualification package


Qualification package cont´ed

22


Qualification package


Flex test

• Defined in AEC-Q200-005A • Require 2mm for Class II ( X5R, X7R, X8R, X8L) and 3mm for Class I ( C0G, NP0)


Convert deflection into µStrain

25

AEC-Q200

VW80808 – Annex 2

KONNEKT KPS


VW Flextest

• VW require 5mm• Sequentiell stress test electrical / mechanical/ temperature / Humidity• Use the same equipment but with a modified PCB to do measurements

26


Compare AEC-Q200 and the VW flex test

27

• AEC-Q200 describe the componet qualification and is the baseline• VW80808 target is the usage of the component in the car application

AEC-Q200 VW80808Open Standard VW proprietary

Boardflex testSeparate Thermal cycleSeparate THB

Boardflex Test sequence with1. thermal cycle -55°C .. 125°C 1h2. THB 85%rH,85°C

77pcs 100pcs

Test in parallel Test in sequence


What about part 2

• Film capacitors• MLCC portfolio that meet

12V batterie application ( Terminal 30) low voltage 5V, 3.3V and even lower

• Usage of Polymer capacitors• ESD • Compare between different technologies

• Design to cost

28


Wrap up

• VW80808 related to passive components• New specification release Mar 2020• Liquid electrolyte MUST not be water based• AEC-Q200 are the basic and underlying the VW specification• AEC-Q200 • Special requirement for soft terminations ( test sequence)

29


Axel SchmidtField Application Engineer, Germany

Mobile: [email protected]

Thank you!


High voltage

• The following voltage levels are defined for DC HV circuits: • HV_1 • • HV_2a • HV_2b • HV_3.

31


The landscape

32

VW 80000 Electric and Electronic Components in Motor Vehicles up to 3.5 tGeneral Requirements, Test Conditions, and Tests

TL 81000 Electromagnetic Compatibility of Electronic Components for Motor VehiclesEMC changes

AEC-Q200 REV D STRESS TEST QUALIFICATION FOR PASSIVE COMPONENTS

ISO 7637-2 Road vehicles – Electrical disturbances by conducting and coupling

LV124LV124BMW GS 95024-2-2 MBN 10615 Porsche VW 80000

requirements, test conditions and tests for electric, electronic and mechatronic componentsand systems for the use in motor vehicles up to 3,5 t

VW80808-1 Requirement ComponentRequirement Qualification

VW80808-2 Requirements and Use – Part 2 Appendix A (normative) Qualification of MLCCs with soft termination



Part number T598D226M035ATE065Electrical measurements before and after

PART CAP (uF, 120Hz) DF (%, 120Hz) ESR (RT, 100kHz) LEAK (uA, RT, 35V, 5min)1 21,714 2,160 0,038 0,3002 21,686 2,110 0,036 7,8303 21,319 2,010 0,039 0,4634 20,963 2,020 0,040 0,8115 21,946 2,110 0,036 0,2676 22,010 2,230 0,040 0,429

mean 21,606 2,107 0,038 1,683min 20,963 2,010 0,036 0,267max 22,010 2,230 0,040 7,830

specification (17,6-26,4)uF 10% 0,065 Ohm 77uA807060504030201 00

99,99

99

95

80

50

20

5

1

0,4324 0,2839 6 0,355 0,3220,371 6 0,2273 6 0,425 0,203

Mean StDev N AD P

DCL (35V, RT, 2min, uA)

Perc

ent

77

D22uF35V_DCL (uA) beforeD22uF35V_DCL (uA) after

Variable

Normal - 95% CIProbability Plot of D22uF35V Leakage Current

5min, Urated)Specification Limit DCL 77uA (RT,

final measurement after: Pulse 5, Umax=41Vdc, tr=2ms, t1=300ms, cycles 10Sample (CM-CN)/CN DF IR MΩ DCL (uA) (CM-CA)/CA d DF d IR MΩ Delta IR

No. 1 kHz % 0.1 kHz 35Vdc/120s 35,0 1 kHz % 0.1kHz %1 -5,45 0,01470 8,1E+01 0,4320988 0,11 0,0006 1,28E+01 19%2 -7,13 0,01475 4,9E+01 0,7185383 0,13 0,0007 9,34E+00 24%3 -2,83 0,01555 9,7E+01 0,3608247 0,14 0,0009 3,92E+00 4%4 -3,82 0,01600 1,0E+02 0,3375121 0,19 0,0011 9,01E+00 10%5 -4,00 0,01545 5,1E+03 0,0068453 0,11 0,0004 2,50E+02 5%6 -2,94 0,01530 9,4E+01 0,3740115 0,12 0,0006 1,39E+01 17%

0,10000 77,00

Documents

VW80808 - Basics€¦ · • MLCC portfolio that meet ⏤12V batterie application ( Terminal 30) ⏤ low voltage 5V, 3.3V and even lower • Usage of Polymer capacitors • ESD •