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SFBAC PELS Educational Seminar: Control for Power Electronics


Wednesday, September 25, 2019 from 1:00 PM to 5:30 PM (PDT)

SFBAC PELS Educational Seminar: Control for Power...

Ticket Information

Ticket Type Sales End Price Fee Quantity
If this registration is made from anything but a .edu email, then it will be rejected. Please show current registration at check-in.
Sep 25, 2019 Free $0.00
TI Employee
If this registration is made from anything but a email, then it will be rejected.
Sep 25, 2019 Free $0.00
Sep 25, 2019 Free $0.00
General Admission (Non-IEEE)   more info Sep 25, 2019 $80.00 $0.00
IEEE Member Discount   more info Sep 25, 2019 $60.00 $0.00
PELS Member Discount   more info Sep 25, 2019 $50.00 $0.00
CASS Member Discount Sep 25, 2019 $50.00 $0.00

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Event Details

The SFBAC (combined Santa Clara Valley, San Francisco, & Oakland/East Bay) IEEE Power Electronics Society (PELS), in conjunction with the Santa Clara Valley Circuits and Systems Society (CASS) are very pleased to invite you to our September Educational Seminar.  Additional event details can be found below.

Please note that all ON-SITE registrations will be $100.  No Exceptions!

 Sponsored By:

Rohde & Schwarz


TestEquity / Keysight



This half-day seminar will teach the basics of control for power electronics applications.  Learn about fixed-frequency linear control, including PI and PID compensators, and how to evaluate the stability of a converter.  Then learn about variable-frequency approaches, such as constant-on-time control, which promise to improve light-load efficiency and dynamic response.  We will then discuss multi-phase converters, including methods to enhance transient response and ensure inductor current balance.  Finally, we will introduce digital control using microcontrollers to implement a control loop in code.



1:10pm to 2:00pm: Introduction to Control Loops

This talk starts out easy on the several simple control methods for a switching power supply. It covers fixed frequency for both voltage modes and current mode control.  Showing how adding in just the right amount of extra ramp help stabilize the output for >50% duty cycles.    To be able to shape the gain and keep it stable, we will cover the error amp and its compensation, covering Type1, Type 2, Type 2B, and Type 3 compensation.  The examples used for this seminar use in the buck regulator.  


Prabal Upadhyaya was born in Kathmandu, Nepal, in 1979. He received the M.S. degree in electrical engineering from University of Idaho. Currently, he is a principal application engineer at Alpha and Omega Semiconductor, Inc. Previously he has held various positions at ROHM semiconductor, Intersil corporation (since acquired by Renesas Electronics) and Cypress semiconductor. 


2:00pm to 2:50pm: A Dive into Fixed Frequency and Constant ON-Time Control Architectures for Power Converters

Throughout the years various control architectures have been adopted by power engineers in order to regulate the constant output voltage. Fixed frequency control techniques have dominated the market as the workhorse for precise control under most load conditions. However, the demand for longer battery life and improvements in efficiency at light loads creates a window of opportunity for hysteretic control and various power saving control techniques. In this presentation, details on voltage mode, current mode and constant On-Time architectures will be explained. Pros and cons for each architecture will be discussed along with practical issues with feedback loop design, effect of parasitic elements and loop gain measurement.  



Nassif Abijaoudeis an applications engineer at On Semiconductor developing DC-DC products in the telecom and consumer space. Prior to his recent work in the telecom market, he helped develop DC-DC products for the computing sector. Nassif obtained his Bachelor of Science degree in Electrical Engineering from California Polytechnic State University (SLO) in 2010. He also holds a Master’s Degree In Electrical Engineering from San Jose State University.  

3:00pm to 3:30pm: Break and Refreshments


3:30pm to 4:20pm: Multiphase Converters: Higher Powers, Lower Ripple, Faster Response

Multiphase converters deliver more power to the load, but also increase performance by interleaving the switching waveforms to lower ripple voltage.  With more switching events, multiphase converters have more opportunity to respond to fast transients, typical in microprocessor systems.   This talk will introduce multiphase buck converters, discuss popular control strategies, and address methods of current balance, a typical challenge with these converters.


Doug Osterhouthas worked in power electronics for over 20 years. He started at Celestica Power Systems designing kilowatt ac-dc power supplies. In 2001, he switched industries to semiconductors where’s held various positions at Micrel, ADI, and ON Semi. There he designed LED drivers, Intel CPU power, and offline converters. For the last 2 years, Doug has been at Google working on consumer products. 


4:20pm to 5:10pm: From OpAmps to MCU’s: Intro to Digital Control

Learn how to transition from op-amp and comparator-based controller to digital microcontroller power controllers.  Digital control provides unique flexibility to tune the converter setpoints and parameters as a function of load or any digital input.  However, moving to digital control introduces its own set of challenges.  This talk will discuss the advantages of digital control, what to look for when selecting a microcontroller for power, and how to translate continuous-time controllers into discrete-time digital controllers.  Finally, common pitfalls when implementing digital control will be discussed.


Dr. Michael Seemanis President and Founder of Eta One Power, Inc.  Eta One Power develops advanced simulation and optimization software focusing on increasing power density and efficiency of power supplies.  He has 15 years of experience in cutting-edge power conversion solutions using wide-bandgap technologies and resonant converter architectures.  He previously worked at Texas Instruments and two power electronics startups in Silicon Valley.  Michael received his S.B. from MIT and M.S. and Ph.D. from UC Berkeley.  He is an IEEE member and chair of the SF Bay Area PELS chapter. 

4:20pm to 5:10pm: Q&A and Wrap-up

Have questions about SFBAC PELS Educational Seminar: Control for Power Electronics? Contact IEEE SFBAC PELS

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When & Where

Texas Instruments
2900 Semiconductor Dr
Building E Auditorium
Santa Clara, CA 95051

Wednesday, September 25, 2019 from 1:00 PM to 5:30 PM (PDT)

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