IEC 62969-1:2017

IEC 62969-1 ®
Edition 1.0 2017-12
INTERNATIONAL
STANDARD
colour
inside
Semiconductor devices – Semiconductor interface for automotive vehicles –
Part 1: General requirements of power interface for automotive vehicle sensors
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IEC 62969-1 ®
Edition 1.0 2017-12
INTERNATIONAL
STANDARD
colour
inside
Semiconductor devices – Semiconductor interface for automotive vehicles –

Part 1: General requirements of power interface for automotive vehicle sensors

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.080.99 ISBN 978-2-8322-5147-8

– 2 – IEC 62969-1:2017 © IEC 2017

CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General system . 8
4.1 General system blocks . 8
4.2 Classification . 8
4.2.1 Sensors in automotive vehicles . 8
4.2.2 Power sources . 9
4.3 Data interface . 10
4.3.2 Reset . 10
4.3.3 Monitoring . 10
5 Environmental conditions and requirements . 10
5.1 General . 10
5.2 Test conditions and items . 10
5.2.1 General . 10
5.2.2 Temperature range . 11
5.2.3 Humidity . 11
5.2.4 Damp heat . 11
5.2.5 Temperature cycling . 11
5.2.6 Mechanical impact and vibration . 12
5.2.7 EMC . 12
5.2.8 IP ratings . 12
5.3 Test setup . 12
6 Power interfaces and checking items . 13
6.1 Input voltage level . 13
6.2 Main error sources . 14
6.2.1 AC noise . 14
6.2.2 Voltage drop . 14
6.3 Redundancy of power interface . 14
Annex A (informative) General description of power interface for automotive vehicle
sensors . 15
Bibliography . 16

Figure 1 – Power supply chains to the vehicle sensors . 8
Figure 2 – Example of test conditions and items . 10
Figure 3 – Test setup for checking the power level to sensors . 13
Figure 4 – Checking input voltage level to sensors (12 V sensors) . 13
Figure A.1 – Sensor-based system in automotive vehicles . 15

Table 1 – Sensors for automotive vehicles . 9
Table 2 – Power sources to sensors in automotive vehicles . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SEMICONDUCTOR DEVICES –
SEMICONDUCTOR INTERFACE FOR AUTOMOTIVE VEHICLES –

Part 1: General requirements of power interface
for automotive vehicle sensors

FOREWORD
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International Standard IEC 62969-1 has been prepared by IEC technical committee 47:
Semiconductor devices.
The text of this International Standard is based on the following documents:
FDIS Report on voting
47/2433/FDIS 47/2447/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 62969-1:2017 © IEC 2017
A list of all the parts in the IEC 62969 series, published under the general title Semiconductor
devices – Semiconductor interface for automotive vehicles, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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INTRODUCTION
The IEC 62969 series is composed of four parts as follows:
• IEC 62969-1, Semiconductor devices – Semiconductor interface for automotive vehicles –
Part 1: General requirements of power interface for automotive vehicle sensors
• IEC 62969-2, Semiconductor devices – Semiconductor interface for automotive vehicles –
Part 2: Efficiency evaluation methods of wireless power transmission using resonance for
automotive vehicle sensors
• IEC 62969-3, Semiconductor devices – Semiconductor interface for automotive vehicles –
Part 3: Shock driven piezoelectric energy harvesting for automotive vehicle sensors
• IEC 62969-4, Semiconductor devices – Semiconductor interface for automotive vehicles –
Part 4: Evaluation methods of data interface for automotive vehicle sensors
The IEC 62969 series covers power and data interfaces for sensors in automotive vehicles.
The first part covers general requirements of test conditions such as temperature, humidity,
vibration, etc. for automotive sensor power interface. This part also includes various electrical
performances of power inte
...