Benefits
This course provides the perfect opportunity to learn about worst case circuit analysis,
its methods and its processes. The course also emphasizes the product reliability
improvements that are possible when a WCCA is combined with MTBF, FMECA, and Stress
and Derating analyses.
The course is designed to provide the participant with the fundamental skills and
knowledge required to perform a Worst Case Circuit Analysis (WCCA or WCA). Participants
learn the importance of this analysis and the different methods which can be utilized.
The proper documentation format for communicating the analysis results is introduced
with detailed and complete examples allowing the participant to gain a full understanding.
In-depth tolerance studies and their evaluation are presented for most common electronic
components.
The "WCCA Savvy Workshop" is taught personally by Charles Hymowitz (WCCA SME and one of the main authors of the Aerospace TOR on WCCA and Steve Sandler, renowned WCCA expert
and founder of Analytical Engineering.
This two-day seminar is beneficial for both the novice wanting to learn worst case
analysis concepts, as well as the engineering manager looking for an update on this
vital technology.
Each class is specially tailored to the individuals and the disciplines (power,
RF, IC) chosen by the students attending the particular seminar. Circuit examples,
issues, and documentation techniques will be used that address the specific problems
and pitfalls that the students are encountering in their daily jobs.
There are two versions of the class, one for Automotive Engineers and one for Aerospace Engineers. The automotive version features discussion of WCCA as it relates to ISO 26262 and ASIL Hazard analysis,
features examples more in-tune with automotive circuitry, and does not include discussions of radiation effects and tolerances.
Upon completion, participants will be able to:
1. Learn the importance of why we perform a worst case analysis.
2. Learn the methods used in performing the analysis.
3. Learn the proper documentation methods.
4. Learn to deal with poorly defined tolerances.
5. Understand the challenges presented by data sheet information and how to validate key characterisits via test.
6. Understand the Requirements, Standards, and Guidelines for WCCA.
Materials and Time Frame
● Online Videos in multiple sessions - Online class includes one (1) hour of live consulting
● WCCA Workshop Handouts Book (300+ Slides and Notes pages)
● WCCA Workshop Examples Book (300+ pages)
● Electronic materials (over 200MB of support files (WCCA examples, templates we use, documentation formats, guidelines, etc.)
● Additional Applicable Articles and Source Materials
● Online Video - At your pace
Click here for
Class Brochure - Automotive Workshop
Class Brochure - Aerospace/Space Workshop
Course Syllabus and Outline (General)
Course Background
The "WCCA Savvy" workshop has been taught at major corporations across the USA including
BOSCH, NASA, Motorola, Dell, Canadian Space Agency, Medtronics, Raytheon, and General
Dynamics. The AEi Systems instructors are experienced at teaching worst case analysis
to engineers with all levels of engineering background.
Topics To Be Covered
● Introduction to Worst Case Circuit Analysis
● What constitutes a FORD (automotive) or TOR (Space) Compliant WCCA
● WCCA Structures, Templates, and Methodologies
● Component Tolerances and Design Concerns
● Analog, Digital, and RF WCCA Guidelines
● Knowing what to analyze and how to analyze it
● Documentation and Essential Formats
● Reviewing a WCCA
● Analysis Tools and Techniques
● Handling EMC Transients - Immunity, ESD, Battery Transients
● FMC1278 Stimulus Generation
● Power Integrity
● Testing for WCCA and Model Correlation
● Selected Examples
Course Instructor: Steve Sandler, Founder & Chief
Engineer
Steve Sandler has over 35 years of experience in the analysis of power
conversion equipment for commercial, military, and aerospace applications. In his
current position, Steve is responsible for Worst Case and Power Integrity analysis of power distribution systems.
Steve is the author of several books and numerous articles on power supply modeling and simulation including,
"Switchmode Power Supply Simulation with PSpice" and "Power Integrity: Measuring, Optimizing, and Troubleshooting Power Related Parameters in Electronics Systems."
Steve is also a Test & Measurement World Magazine “Best in Test”
Finalist 2012-2014 and the winner of the Jim Williams ACE award.
Course Instructor: Charles Hymowitz, Managing
Director
Charles Hymowitz has over 30 years of experience in the Reliability Analysis, EDA
software, and analog simulation industries. He has been Chairman of AEi Systems,
LLC since its re-organization in 2002. Charles is a recognized SME ('Subject Matter
Expert') on WCCA and reliability analysis.
In 1985, he co-founded Intusoft, a leading CAE/EDA software corporation where as
Director, held several positions, including Vice President of Product Development.
Charles created and edited the Intusoft Newsletter the industry standard SPICE
publication. He has co-authored the “SPICE Circuits Handbook”, “Simulating with
SPICE”, “The SPICE Cookbook”, “Power Specialist’s App Note Book” and “The SPICE
Applications Handbook.”
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