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Designing a Power Supply for a Safety MCU to Meet Functional Safety ASIL B
SNVAA92
November 2023
LM63625-Q1
,
TPS37-Q1
,
TPS3703-Q1
,
TPS3850-Q1
CONTENTS
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Designing a Power Supply for a Safety MCU to Meet Functional Safety ASIL B
1
Abstract
1
Introduction
2
Power Designs for Safety MCUs With Functional Safety Requirements
3
ASIL B Power-Supply Design Example and FMEDA Analysis
3.1
Functional Safety Requirements
3.2
Proposed Power Design
3.3
FMD and Pin FMA
3.4
LM63625-Q1 and TPS37A-Q1 FMEDA Analysis at the Die Level
3.5
LM63625-Q1 and TPS37A-Q1 FMEDA Analysis at the Pin Level
11
3.6
Total FMEDA Analysis of the LM63625-Q1 and TPS37A-Q1
4
Summary
5
Additional Resources
IMPORTANT NOTICE
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Designing a Power Supply for a Safety MCU to Meet Functional Safety ASIL B