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BS EN IEC 60747-17:2020

BS EN IEC 60747-17:2020

$198.66

Semiconductor devices – Magnetic and capacitive coupler for basic and reinforced insulation

Published By Publication Date Number of Pages
BSI 2020 58
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IEC 60747-17:2020(E) specifies the terminology, essential ratings, characteristics, safety test and the measuring methods of magnetic coupler and capacitive coupler. It specifies the principles and requirements of insulation and isolation characteristics for magnetic and capacitive couplers for basic insulation and reinforced insulation. This first edition cancels and replaces IEC PAS 60747-17:2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC PAS 60747-17:2011: a) introduced lifetime safety factors for improved life time consideration, to comply with widely recognized aging mechanisms of silicone dioxide (TDDB) and thin film polymer isolation layers; b) significantly improved “end of life testing” paragraph and statistical life time consideration by adding detailed description on process, safety factors, methods of generating data points and respective lifetime interpolations as well as being specific on minimum amount of samples required; c) introduced concept of certification by similarity, including Annex A, giving guidance on qualification considerations and required certification process; d) alternative pulse shape allowed for surge pulse testing, to avoid issues due to surge tester availability; e) various improvements throughout the standard: definitions, for example type of coupler have been improved, introduction of surge impulse VIMP rating, usage of glass transition temperature, pre-conditioning have been redefined for improved usability and better compatibility with today’s design and functionality of couplers, available mold compounds, etc.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
10 FOREWORD
12 1 Scope
2 Normative references
13 3 Terms and definitions
20 Figures
Figure 1 – Time intervals for methods a and b of the test voltage
24 4 Electrical characteristics – Coupler logic and timing definitions
Tables
Table 1 – Overview on characteristics and symbols
25 5 Coupler for protection against electrical shock
5.1 General
5.2 Type
5.3 Ratings
5.3.1 General
5.3.2 Safety limiting values
5.3.3 Functional ratings
5.3.4 Rated isolation voltages
5.4 Electrical safety requirements
26 5.5 Electrical, environmental and/or endurance test information
5.5.1 General
Table 2 – Datasheet characteristics
27 Table 3 – Tests and test sequence for coupler providing basic insulationand reinforced insulation for protection against electrical shock
28 5.5.2 Routine test
5.5.3 Sample test
5.5.4 Maximum surge isolation voltage
Table 4 – Test conditions
29 5.5.5 Type test
Figure 2 –1,2/50 μs surge pulse according 61000-4-5:2014 allowed as equivalent impulse for isolation testing
36 Figure 3 – Determination of time to failure (referring to method in 5.5.5.8)
37 Figure 4 – Determination of working voltage (referringto method in 5.5.5.8 for exponential model)
38 Figure 5 – Determination of working voltage (referringto method in 5.5.5.8 for non-linear model)
40 6 Measuring methods for couplers
6.1 General
6.2 Isolation capacitance (ClO)
6.2.1 Purpose
6.2.2 Circuit diagram
41 6.2.3 Measurement procedure
6.2.4 Precautions to be observed
6.2.5 Special conditions
6.3 Isolation resistance between input and output, RlO
6.3.1 Purpose
6.3.2 Circuit diagram
Figure 6 – Isolation capacitance measurement circuit
42 6.3.3 Precautions to be observed
6.3.4 Measurement procedure
6.3.5 Special conditions
6.4 Isolation test
6.4.1 Purpose
6.4.2 Circuit diagram
Figure 7 – Isolation resistance measurement circuit
43 6.4.3 Test procedure
6.4.4 Requirements
Figure 8 – Isolation voltage measurement circuit
44 6.5 Partial discharges of coupler
6.5.1 Purpose
6.5.2 Circuit diagram
6.5.3 Description of Figure 9 test circuit and requirements
Figure 9 – Partial discharge test circuit
45 6.5.4 Test procedure
6.5.5 Description of calibration circuit (see Figure 10)
Figure 10 – Connections for the calibration of the complete test arrangement
46 6.5.6 Test methods
6.5.7 Specified conditions
Table 5 – Safety factor F
47 6.5.8 Test voltage conditions
6.6 Switching times of couplers
6.6.1 Purpose
6.6.2 Circuit diagram
Table 6 – Specified conditions for method a and method b
48 6.6.3 Measurement procedure
Figure 11 – Switching time test circuit
Figure 12 – Transition time waveform measurement
49 6.6.4 Specified conditions
6.7 Measuring methods of common-mode transient immunity (CMTI) for magnetic and capacitive couplers
6.7.1 Purpose
6.7.2 Circuit diagram
Figure 13 – Propagation delay time waveform measurement
50 6.7.3 Precautions to be observed
Figure 14 – Static versus dynamic data source signal VI
Figure 15 – Common-mode transient immunity (CMTI) test setup for both static and dynamic testing
51 6.7.4 Static CMTI measuring procedure
52 6.7.5 Specified conditions
6.7.6 Dynamic CMTI measuring procedure
Figure 16 – Static common-mode transient immunity (CMTI)and VCM and low to high data transition waveform
53 Annex A (informative)Qualification guidance
54 Figure A.1 – Lifetime verification
Table A.1 – Front end process changes within component
55 Table A.2 – Front End Process Changes within SiO/SiN/imide-passivation
Table A.3 – Layout changes
Table A.4 – Backend changes
56 Bibliography

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