The DC fast (DCFC) charging market is thriving. If you are an application, product, or design engineer working in the power electronics field, you might be involved in the design of novel DC fast charging systems. Fundamental questions might arise here, especially if it is the first time you are facing such a challenge. How and where should you begin, what are critical design considerations, and how should you address them. Our system expert will guide you and highlight the key challenges, trade-offs, and compromises made, and show how to design, build and validate such a system from scratch using our 25kW SiC module based DC fast charging system reference design.

<June 1> Session 1: 6-Pack Boost Active Front End (AFE) Design

The first session will cover overall 25kW EV DC charging reference design objectives. We will focus on AC-DC three phase PFC stage, followed by topology and component selection. We will also show and comment on the simulation to pre-tune the power stage.

<June 8> Session 2: Dual Active Bridge DC-DC Design

The second session will cover the second stage of the fast DC EV charger reference design. We will follow the same structure as the first session with topology discussion, components selection, and simulations details.

<June 15> Session 3: Gate Drivers, Auxiliary Supply, and Thermal Management

The third session will cover the “surroundings” of the two power stages covered in Session 1 and 2, showing the selection and implementation of gate drivers. We need a housekeeping (or auxiliary) supply to feed these drivers and the other functions on the boards—the session presents the chosen solution. Finally, we will introduce the thermal management solution.

<June 29> Session 4: Measurement Results

The final session will focus on measurement and results from laboratory testing for both power stages: the Active Front End (AFE) and the Dual Active Bridge (DAB). We will illustrate and explain the waveforms and graphics synthesis.

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The Presenter

Didier Balocco, EMEA Power Solution Group Business Marketing Engineer at onsemi

Didier received his Electronics Engineer diploma from the “École Nationale Supérieure d’Électronique et de RadioÉlectricité de Bordeaux,” France, in 1992 and his Ph. D. degree in Power Electronics from the University of Bordeaux in 1997.

In 1996, he joined AEG Power Solutions, formerly Alcatel Converters, as a research engineer for DC-DC and AC-AC converters design in a range of 1 W to 1 kW, mainly for telecom equipment. He managed research activities from 2000 to 2014, publishing more than ten papers on power electronics, and holds one patent. From 2011 to 2013, he worked eighteen months on a 15-kW solar inverter module for a 150-kW cabinet in Dallas, Texas.

He joined Fairchild in August 2014 as a Field Application Engineer supporting the South of France, Spain, and Portugal. In 2016, ON Semiconductor acquired Fairchild. In 2018, he moved to a new role inside onsemi. He is currently an EMEA Power Solution Group Business Marketing Engineer.