Cost and reliability gains in automotive electronics
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Transcript of Cost and reliability gains in automotive electronics
KOEN VERHAEGE
TOKYO, MAY 16, 2014
COST & RELIABILITY GAINS IN AUTOMOTIVE ELECTRONICS
Sofics – Solutions for ICs
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• Develop, customize, and license solutions for ICs
– Track record in on-chip electrical overstress protection
More than 75 patents
More than 50 licensees
More than 1 IC release per day including Sofics solution
• Serving customers worldwide
PowerQubic
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• On-chip EOS/ESD protection for automotive and high voltage applications
– Worldwide track record
Three reasons why companies rely on Sofics PowerQubic
1. Reduce cost of development/silicon/manufacturing 2. Meet hard/harsh specifications 3. Enable IC performance with (standard) EOS/ESD reliability
The automotive market
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• Trend: more electronics in harsh EMI/EOS automotive environments
– Electrification of systems
– New regulations
– New applications
• Trend: more semiconductors in light cars
– $300 [2013]
– $400 [2017]
• TAM:
– $30B i.e. 10% semi market
• Reliability challenges:
– Zero defect requirements
– Very long system lifetime
Automotive electronics: not an “easy ride”
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• Operation conditions different than consumer and industrial
• System (reliability) requirements are equally more stringent
– DC: 12V, 24V, 40V…
– Transient currents: several Amperes
Consumer Industrial Automotive
Temperature 0 to 40⁰C -10 to 70⁰C -40 to 160⁰C
Operation time 2 to 5 years 5 to 10 years up to 15 years
Humidity low environment 0% to 100%
Field failure rate <10% <<1% 0 failure
Supply ~ 1 year ~ 2 to 5 years up to 30 years
Automotive electronics: not an “easy ride”
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• Zero defect requirements
– Severe reliability tests and qualification
– Cost of errors over product(ion) life time
Early-built-in reliability
• Trend:
– OEM push reliability specifications on the IC
Adds complexity and cost to the IC
Source: Freescale, David Lopez
Source: Audi, Christian Lippert
Automotive electronics: not an “easy ride”
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• Severe reliability requirements passed on component and system level
– Above standard HBM, MM requirements
– Transient latch-up immune
-27V..+40V
– ESD under powered conditions
0V..+18V
– IEC 61000-4-2 system ESD
– ISO 7637-2 load dump pulse
– EMC IEC 62132 DPI
• Requirements strongly depend on application
– Automotive, industrial applications: IEC 61000-4-2, ISO 7637, IEC 62132 …
– Battery, power management: IEC 61000-4-2
Source: STMicroelectronics, Philippe Merceron
Automotive IC reliability design challenges
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• EOS: Block DC current at high voltages
• ESD: Dissipate transient current, above (high) supply voltage
• EMC: Avoid false triggering
• Cost opportunity:
– Reduce development time
– Minimize on-chip protection area
– Avoid dedicated process steps
Sofics solution: PowerQubic clamps
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• Tunable trigger voltage Vt1
– Customized DC and transient response
• Tunable holding voltage Vhold
– To adapt to application/requirements
• Tunable performance It2, Ron
– High current
– Low on-resistance
• …and:
– Bi-directional, standard process compatible, compact silicon area…
I
V
It2
Vh VDD Vt1
Ron
Sofics solution: PowerQubic clamp – example
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• Automotive LIN interface protection clamp
– High ESD performance
16A TLP current (@ 48V)
24kV HBM
6kV IEC 61000-4-2 direct injection
– EOS tolerant
Load dump pulse ISO 7637-2
Tolerant above 40V
– Transient Latch-up immune
High holding voltage
At high temperature
For fast events
0
2
4
6
8
10
12
14
16
0 10 20 30 40 50
I [A]
V [V]
PowerQubic adapts to applications, processes
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• Flexible solution set for different voltages, applications
– Different concepts, applied in portfolio of novel device types
Hebistor, quadristor, SMOS, RCS, MCA, MCE, …
– Tunable for triggering, holding and protection performance
By layout variation
By schematic adaptation
– Standard process compatible: no process changes
Several concepts are even compatible with standard CMOS process flow
No additional masks, and no special implants required
• Multiple projects, customers, product implementations
– Silicon proven in BCD, HV CMOS and advanced CMOS
– >35 voltage domains protected (5V – 60V)
– >15 man years of research & development
3 main reasons why automotive IC designers rely on Sofics solutions
Reduce IC cost lower development, design, silicon and manufacturing costs
Pass any ESD/EOS/LU specification flexible technology adapts to your requirements
Enhance IC performance lowest leakage, capacitance ...
12 SOFICS © 2014 Proprietary & Confidential
PowerQubic, TakeCharge, Sofics are trademarks of Sofics bvba
Contact us
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• Sofics contact Koen Verhaege [email protected]
Pieter Donck [email protected]
Bart Keppens [email protected]
SOFICS bvba – RPR 0472.687.037
Groendreef 31, 9880 Aalter, Belgium
(tel) +32-9-21-68-333, (fax) +32-9-3-746-846
www.sofics.com