Online Workshop on "Power Supply Design Using LTspice"














Date: Thursday, March 16, 2017


Time: 8AM - 2PM PST

Location: Online



  • Control loop design for power supplies can be challenging, even for those with a background in analog electronics. Translating from textbook theory to actual designs that can be implemented on a circuit board requires experience that can take years to acquire.

  • In this class we will speed up the process by focusing on practical aspects of simulating and designing control loops for power supplies. In particular, we will be using LTspice, a free simulator, to compute the necessary feedback system and then verify its design.

  • We start from the basics, explaining practically how to measure the transfer function of the power stage of a power supply.

  • We also spend time showing the basics of LTspice, and then use it to model the power stage. We look carefully at the potential pitfalls of using modeling.

  • We show how to build both switching models and state-space average models of a power supply in LTspice. We show how to use the latter to measure the transfer function, and also how to practically do the same thing on the lab bench.

  • We then look at the three main types of feedback control, and build models of these.

  • We combine the two models together and show how to measure the complete transfer function of the power supply, hot to verify its bandwidth and phase margin, and how to do that on the lab bench.

  • Finally, we build a complete switching model of the power supply, and verify its stable performance.

The workshop recording will be provided to the attendee after the workshop.

Who should attend:

This course is suitable for electrical engineers of all levels of experience who need to shorten their power supply design cycle time and ensure that fewer board spins are necessary.


Speaker: Ron Lenk
















Ron Lenk is a veteran engineer specializing in power supplies and LED drivers. He has 35 issued U.S. patents, and is the author of a best-selling book on power supplies, and co-author of a best-selling book on LEDs and LED drivers. He was co-founder and CEO of SuperBulbs (Switch Light), a venture-funded light bulb manufacturer. He is currently a consultant, doing both design work and invention. He is a senior member of the IEEE. He graduated from M.I.T. with an S.B. in Physics, and remains actively engaged in theoretical physics and mathematics. 

Books written by Ron Lenk

Cancellation Policy

Workshops are subject to cancellation if the minimum number of attendees is not met five days prior to the date of the seminar. 

In the event of short notice cancellation, Learner's Place's liability is limited solely to the refund of the course fees.

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