Transforming Power with Industry Leading Silicon Carbide Expertise and Capacity

April 30, 2019 by Paul Shepard

You are invited to join Wolfspeed at Stand 9-240 during PCIM Europe, the world's leading conference and expo for showcasing the latest in power technology and trends.

Wolfspeed will have models for four new reference designs, including a high frequency dc-dc converter and a new 6.6kW bi-directional on-board charger with 30% greater power density than our previous design. The company will also be presenting numerous technical papers.

The booth will also feature DBT's 150kW Fast Charger which utilizes both Wolfspeed reference designs and components.

2.2 kW Totem Pole PFC

This 2.2kW totem pole demonstrates the capability of Wolfspeed C3MTM SiC MOSFETs in new low-inductance packaging to cut losses and simplify designs. Targeting 80 Plus Platinum and 80 Plus Titanium standard server power, the PFC delivers a 1% increase in system efficiency when compared to existing silicon interleaved PFC boost circuits, while also increasing power density by 15% and lowering overall system BOM cost.

6.6kW high density on-board charger

The 6.6kW bi-directional on-board charger (OBC) targets high-power-density, high-efficiency on-board charger applications. The system delivers 54W/in3 power density and exceeding 96.5% in peak efficiency with 67kHz switching frequency for CCM totem pole PFC and 150kHz-300kHz for a CLLC resonant converter.

6.6kW 1MHz DC-DC Converter

The 6.6kW full-bridge LLC dc-dc converter targets high-frequency, high-efficiency and high-power-density applications such as on-board chargers and bus converters. Benefits of high-frequency operation include smaller magnetics and EMI filters, and higher power density.

300kW Three Phase Inverter featuring the new XM3 Power Module!

This 300kW three-phase inverter is designed to demonstrate how Wolfspeed's C3M SiC MOSFETs in new low-inductance power module packaging can cut losses and simplify designs. The inverter has >2X the power density of comparable Si based designs and >98% efficiency. The design features XAB450M12XM3, 1200V, 450A half-bridge power module in Wolfspeed's next generation package and optimized gate drivers with built-in protections.

150kW DBT Fast Charger

Wolfspeed SiC MOSFETs and Schottky diodes are used in this fast charger featuring two Wolfspeed system designs that deliver up to 95% efficiency: PFC Stage - Vienna Rectifier and DC-DC Stage - Full Bridge LLC.

Where to Find Wolfspeed Parts in Use

Wolfspeed parts are featured in demos throughout PCIM. Here is a complete listing of where you can find our components on display:

Richardson RFPD

Stand: 6-329

Demo Names: 20kW Two-level AFE and 20kW DC-DC for Off-Board Charger; 6.6kW Bi-Directional On-Board Charger


Stand: 9-305

Demo Name: 300kW Three Phase Inverter

Wieland Microcool

Stand: 7-447

Demo Name: 62mm and XM3 High Performance CoHi ld Plate

More Info: Weiland Microcool's 3000XP series cold plate utilizes their Micro Deformation Technology (MDTTM¬) to enable high performance cooling of Wolfspeed's optimized 62mm CAS325M12HM2 power module as well as Wolfspeed's standard 62mm module family. Weiland Microcool will also showcase a high density, double sided cold plate designed for Wolfspeed's new XM3 power module family.

Analog Devices

Stand: 6-442

Demo Name: CGD12HBXMP

More Info: Wolfspeed and Analog Devices have worked together to develop a gate driver reference design for Woflspeed's XM3 power module. Utilizing Analog's ADuM4135 highly integrated gate drive IC, Wolfspeed has enabled a compact, optimized solution to enable fast, robust switching performance and safety features for the XM3 power module family.


Some presentations are on the exhibition floor and can be viewed without a pass or registration, others require conference registration.

Tuesday, May 7th


Optimizing SiC Bare Die and Modules for High Power Applications

Presentation Type: Exhibitor Forum

Location: Hall 7, Forum Stand

Speakers: Edgar Ayerbe, Wolfspeed, A Cree Company, USA


A Bi-Directional AC/DC Converter for Electric Vehicle Charging Application Using Bi-Directional, Fixed Frequency CLLC Converter Based on SiC Device

Presentation Type: Poster Session

Track: Automotive and Electromobility

Speakers: Jianwen Shao, Guy Moxey, Wolfspeed, A Cree Company, USA; Binod Agrawal, Wolfspeed, A Cree Company, IND

Wednesday, May 8th


A 6.6kW High Power Density Bi-directional On-Board Charger Based on SiC MOSFETs

Presentation Type: Oral Sessions

Location: Brüssel 1

Track: Automotive Power Converters

Speakers: Frank Wei, Cree, CN


Electro-Thermal Co-Design of a 250kW Silicon Carbide Traction Inverter for Heavy Equipment Application

Presentation Type: Oral Sessions

Location: Brüssel 1

Track: Automotive Power Converters

Speakers: Yue Zhao, Alan Mantooth, Zhongjing Wang, University of Arkansas, USA; Muhammad Jahidul Hoque, Nenad Miljkovic, Nithin Vinod Upot, University of Illinois, USA; Brett Sparkman, John Fraley, Wolfspeed, A Cree Company, USA


3.3kW High-Frequency Full-Bridge LLC DC-DC Converter with SiC MOSFETS

Presentation Type: Oral Sessions

Location: Brüssel 1

Track: Automotive DC-DC Converters

Speakers: Yuequan Hu, Jianwen Shao, Wolfspeed/Cree, USA


SiC - Devices are Mature

Presentation Type: Forum Panel

Location: Hall 7, Stand 543

Track: Bodo's Podium Panel Discussion on Wide Band Gap Devices

Speakers: Guy Moxey


High-Performance 300kW 3-Phase SiC Inverter Based on Next Generation Modular SiC Power Modules

Presentation Type: Poster Sessions

Location: Foyer Ground Floor Entrance, NCC Mitte

Track: High Power Converters

Speakers: Jianwen Shao, Guy Moxey, Wolfspeed, A Cree Company, USA; Binod Agrawal, Wolfspeed, A Cree Company, IND

Thursday, May 9th


Reliability of SiC MOSFET with Danfoss Bond Buffer in Automotive Traction Power Modules

Presentation Type: Oral Sessions

Location: München 2

Track: Chip Bond Technologies

Speaker: Alexander Streibel, Martin Becker, Ole Mühlfeld, Danfoss Silicon Power; D; Jeffrey Casady, Brett Hull, Shadi Sabri, Wolfspeed, A Cree Company USA; Daniel J. Lichtenwalner, Cree, USA