Designing Switched-Mode Power Supplies in the High di/dt ERA

  • Date:  September 6, 2018
  • Time: 10am PT / 1pm ET

Webinar Overview

Why this webcast is important:
Engineers building switched-mode power supplies into their systems are demanding lower cost, smaller size, and lighter weight. The cost, size, and weight are dominated by three components: the heat sink, the inductor, and the capacitor. In general, faster switching speed – high di/di in the industry jargon -- enables smaller, lighter, and cheaper versions of these components. 

But there's a challenge. 

Traditional workflows don't work in the high di/dt era because they are blind to the spike voltages induced across layout parasitics, V_spike = L_parasitic * di/dt. In the high di/dt era, it is necessary to add a post-layout analysis step to the workflow, in between pre-layout circuit simulation and physical prototyping steps. 

This webinar will explain how and why to do post-layout analysis, specifically how to use the ADS Momentum field solver to extract layout parasitics into an EM-based model that you can add to the pre-layout circuit simulation. In this way, the spike voltages can be determined, and (using "What if..." design space exploration) reduced to an acceptable level before sending the layout for fabrication. 

Don’t smoke those precious power devices with expensive, time-consuming, non-deterministic board spins: use this "virtual prototype" method instead.

PRESENTER:
Dr. Colin Warwick, Power Electronics Product Manager, Keysight Technologies
Colin Warwick is the product manager for power electronics at Keysight EEsof EDA, where he is focused on design and analysis tools for engineers building high di/dt switched mode power supplies. 

Prior to joining Keysight, Colin was with Royal Signals and Radar Establishment in Malvern, England; Bell Labs in Holmdel, NJ; and The MathWorks in Natick, MA. 

He completed his bachelor, masters, and doctorate degrees in physics at the University of Oxford, England. He has published over 50 technical articles and holds thirteen patents.