Engineer

Sensing in Automotive Powertrain and Braking Systems

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Agenda
• Brief Introduction
• Automotive electronics & sensors • Capabilities available from ON Semiconductor

• Powertrain Systems
• Gasoline and diesel engines • Main powertrain sensors

• Braking and Stability Control Systems
• Basic systems: ABS, EBD, TCS, ESC • Sensors for dynamic braking

• Examples of automotive sense interface ICs
• Sensing interface IP from ON Semiconductor
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Automotive Electronics
• Value added by ON Semiconductor APG
– Proprietary High-Voltage Processes – Innovative Solutions: Sensor Interfaces, IVN, High-Voltage System-on-Chip – Harsh Environment Applications – Extensive Automotive Portfolio
← focus area for green electronics

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Key Successes in sensing
– – – – Steering/Pedal Angle Sensor Pressure sensors for Powertrain / Braking Position Sensors for Headlight Control Gyro Sensors for Stability Control

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Main drivers for new electronics
– Safety – Emissions – Fuel consumption

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Regulation plays a key role

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Modern Automotive Sensors
• • • • • • • • External sensing element or MEMS Built-in protections (shorts, EMI, ESD…) Diagnostic modes / redundancy Accuracy / linearity reaching ~0.1% to 1% NVM for trimming and calibration Nonlinear temperature compensation TJ at IC: from –40 oC up to +125~200 oC Target failure rate: zero ppm

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Automotive Technologies Portfolio
Voltage
100 V 80 V HBIMOS I2T100 50 V I3T50 25 V 5V 3.3 V 1.8 V ABX C07 1K 5K 0.7 u 0.6 u I2T30(E) C5X I3T25 D3
C035 C3,C035U 100K

I3T80 I4T

C018 500K 0.18 u

Gate Count
Geometry
(drawn poly)

Features
5

>1.5 u

0.35 u

(OTP, EEPROM, etc.)

Non-volatile Memory (NVM) IP
• EEPROM
– – – – – Long experience, started with C5 NASTEE release in 1999 Non-added-steps EEPROMS available today for C5 / C3 / I3T50 I3T50 EEPROM is capable of 175 oC operation (reading) EE being released for I3T25U (Q4 2009) Development for 0.18 u ongoing

• OTP
– OTP