Events

EPC- Empa Electronic GaN Webinar Series

Tuesday, October 05, 2021 - Wednesday, October 27, 2021
EPC- Empa Electronic GaN Webinar Series
Location: Online

Get Ready for Technology Change with GAN Experts Speaker: Marco Palma, Director of Motor Drives Systems and Applications, EPC

Don't miss the 4 part "Online Webinar" series, which will be held this fall in partnership with Empa Elektronik & EPC, where you can reach GaN experts.

Register now for this webinar series which will be held on Microsoft Teams

2021 Symposium on High Power Semiconductor Materials (GaN & SiC) and Devices

Tuesday, October 26, 2021 7:30 PM - 8:30 PM (UTC-08:00) Pacific Time (US & Canada)
2021 Symposium on High Power Semiconductor Materials (GaN & SiC) and Devices
Location: Online

Surprising Benefits GaN Brings to BLDC Motor Drives Speaker: Michael de Rooij, Ph.D., Vice President, Application Engineering

The popular brushless DC (BLDC) motor is finding increasing application in robotics and drones. Such applications have special requirements such as lightweight, small size, low torque ripple, and precision control. To address these needs, inverters powering the motors need to operate at higher frequency, but require additional filtering to prevent excessive losses, EMI generation, and excess mechanical wear related to high frequency common mode and induced current flow. GaN FETs and IC's offer the ability to operate at much higher frequencies in hard-switching topologies without incurring significant losses. In this work we introduce a new monolithic GaN half-bridge ePower Stage IC that is capable of high switching frequency and can deliver up to 15 ARMS load current per phase. This high frequency reduces filtering requirements thus reducing size and weight in addition to ensuring high precision control needed for robotics while also reducing audible noise.

WiPDA 2021

Sunday, November 07, 2021 - Thursday, November 11, 2021
WiPDA 2021
Location: Virtual Event

Keynote Presentation
Gallium Nitride Integration and the End of Discretes Speaker: Alex Lidow, Ph.D., CEO and Co-Founder of Efficient Power Conversion

Integrated circuits made using GaN-on-Si substrates have been in production for over seven years. During that time, GaN-based ICs have evolved from pure discrete devices to monolithic half-bridge devices and then onto power FETs that included their own monolithically integrated driver, and more recently, to fully monolithic power stages including power FETs, drivers, level shifting circuits, logic, and protection. In this talk we will look at the roadmap of GaN-on-Si integration and show how the role of discrete transistors is destined to diminish to near-zero in the next few years.

Technical Presentation
Extreme GaN - What Happens When eGaN® FETs are Exposed to Voltage Levels Well Above Data Sheet Limits Authors: Alejandro Pozo, Robert Strittmatter, Alex Lidow, Ph.D.

GaN transistors, and more recently integrated circuits, have been in mass production for over a decade [1] with several manufacturers reporting tens of millions of units shipped with billions of hours in actual end-use applications. The track record has been extraordinarily successful, and one of the key reasons is that GaN devices are far more rugged than their silicon MOSFET ancestors. Recently, Efficient Power Conversion (EPC) did a series of tests to take eGaN FETs beyond their data sheet limits to quantify the effects of large amounts of overstress voltage [3]. This paper will examine the results of some of those tests to show how operation under extreme conditions for long periods of time can be a practical new tool for power system design engineers.

Technical Presentation
GaN Devices for Motor Drive Applications Author: Marco Palma, Director of Motor Drives Systems and Applications

DC and battery-powered motor applications are moving from conventional silicon MOSFET, low PWM frequency inverters to GaN, high-frequency PWM inverters. The advantages rely on a higher system efficiency and on the elimination of the electrolytic capacitors, and the input inductor. To further reduce the EMI and to increase the voltage for traction applications, multilevel topologies are getting more popular and are poised to become the standard topologies soon. In this paper, gallium nitride-based discrete FETs and integrated circuits are shown to increase power density to a new level and move to high-frequency PWM inverters for electric motors used in many different applications including, but not limited to; servo drives, e-bikes, e-scooters, collaborative and low-voltage robot, medical robots, industrial drones, and motors used in automobiles.

Technical Presentation
Quick Estimation of Chip Scale Package GaN FETs Thermal Performance Using a Simple Circuit Model Author: Assaad El Helou, Ph.D., Senior Thermal Mechanical Applications Engineer

We present a reduced physics-based thermal model to predict the thermal performance of Chip Scale Package (CSP) GaN FETs mounted to printed circuit boards (PCBs) and provide an easy-to-use thermal characterization tool for engineers and designers to quickly assess thermal management strategies. The heat conductance from the GaN FET to both the PCB side and to the “case” (i.e., die exposed surface) are modeled using resistive-network circuit modeling. The thermal resistance in each conductance path is presented for different parameters relating to PCB construction (stack-up, area, via density), FET size, and cooling approach (TIM material, heat spreader and heatsink). A comprehensive set of thermal finite-element simulations was run over the set of parameters. The results, presented in easy “look-up” style graphs, show that even with a small footprint, GaN FETs power-handling capability can be extended when effectively cooled using a simple PCB design and thermal management approach.

More information and register

Digi-Key Electronics Webinar

Tuesday, November 09, 2021 10:00 AM
Digi-Key Electronics Webinar
Location: Online

Webinar: Meeting the Power and Magnetic Design Challenges of Ultra-Thin, High-Power Density- Powered by Digi-Key Electronics

The demand for thinner and more powerful electronic products has increased dramatically over the past decade. Consumers are looking for thinner solutions, which are increasingly more power hungry. How do we address the demand for a thinner power supply with greater power density? Discover these solutions used to offer ultra-thin, high power density 48 DC/DC solutions, thanks to the EPC eGaN FETs and Würth Elektronik knowledge of power inductors in this FREE 1-hour training Powered by Digi-Key Electronics, and presented jointly by Würth Elektronik and EPC.

Register Today