Webinar: Vishay - Meet Demands for High Power Electronic Components

Vishay

Webinar Date: September 4, 2024

Meet Demands for High Power Electronic Components

This post covers Key Takeaways and Frequently Asked Questions from the Vishay Meet Demands for High Power Electronic Components webinar regarding Vishay’s passive and semiconductor components used in DC fast charging applications. Whether you’re a seasoned professional or a curious newcomer, you’ll find plenty of valuable information watching the webinar. Links to the Webinar, Resources, and Related Content are provided within the post. A copy of the PowerPoint presentation will be provided for customers that register to watch the recorded webinar. All Snippets and Content Compliments of Vishay.

As a designer of electric vehicle chargers, you’re tasked with meeting increasingly high power requirements in ever-smaller footprints. And with a myriad of electronic components available, finding the right solution to meet your performance and reliability needs often means a time-consuming process of searching, sampling, and testing.

To elevate your industrial designs, join DigiKey and Vishay to learn about the company’s reliable and efficient technology, which covers the high-voltage spectrum of the DC fast charger applications. Vishay’s passive and semiconductor components offer differentiated solutions and high availability for your fast-paced projects.

Key Takeaways

  • Overview of electric vehicle supply equipment (EVSE) trends, general specifications, and industry challenges
  • Application examples of DC fast charging with solutions highlights
  • Design characteristics and considerations, including wide operating temperate ranges and harsh environmental conditions
  • New technology advancements for discrete diodes and MOSFETs
  • Understanding different technologies to cover numerous power conversion stages requirements

Frequently Asked Questions

What are factors affecting proper operation of a capacitor or capacitor failure?

  • There are different types of failures mainly over voltage, over current or thermal, but others also occur, like ESD. Aged of capacitor is definitely a reason for the failure, but operation and environment are more critical. For example, an engineer has to de-rate the voltage and humidity of the capacitor to accommodate proper operation.

What methods do you use for cooling? Do you primarily use heat sinks or other cooling methods?

  • Most of the time we suggest board heat sync, but there is possibility to use top heat sync with airflow. Even liquid cooling in some cases.

What are the key driving factors of film capacitors used in power electronic modules (PEMs) and if this technology is sustainable in the near future, if not what is the scope of ceramic capacitors?

  • For the two different technologies that we see, primarily the distinction between ceramic capacitors is that ceramic capacitors offer a more cost-effective approach. They both offer the same functionality regarding EMI purposes for suppression and may be more flexible in some areas. Film capacitor technology is extended reliability and highly reliable technology under harsh environments. Film also offers high ripple current, voltage flexibility, but also high temperature and humidity environment. Moving forward there is a lot of investments in film capacitors and also a push for higher temperature reliability and a push for better film capacitor technology.

How to select right component from Vishay large portfolio?

  • The resources listed here and, in the webinar, along with DigiKey and Vishay website. Contacting DigiKey technical support may also assist with product selection.

Fundamental differences between Silicone and Silicone Carbide MOSFETs?

  • Silicon carbide can switch at nearly ten times the rate of silicon, which results in smaller control circuitry. Additionally, the decrease in resistance results in less energy loss during operation, making silicon carbide nearly ten times more efficient at higher voltages than silicon.

Difference between Y and X capacitors?

  • X capacitors are connected between the line and neutral, while Y capacitors are connected between the line and chassis.

  • X capacitors protect against differential mode interference, while Y capacitors filter out common-mode noise.

  • X capacitor failure can create a fire risk, but is unlikely to cause a dangerous electric shock. Y capacitor failure can create a risk of shock to the user.

  • X capacitors have subclasses X1, X2, and X3, while Y capacitors have subclasses Y1, Y2, Y3, and Y4.

  • X capacitors are not interchangeable with Y capacitors, but Y capacitors can sometimes be used as substitutes for X capacitors.

Why optical isolator is required for High Voltage DC bus?

  • Optical isolators, also known as optocouplers, create a physical barrier between connected devices, removing ground loops and providing immunity to electrical interference. They are used to protect systems from high voltages and voltage transients by preventing electrical surges from damaging sensitive components downstream.

Advantages using Silicone Carbide diodes in High Voltage rectification and PFC?

  • SiC diodes have lower forward recovery power loss than Si diodes.

  • SiC diodes can be connected in parallel without the risk of thermal runaway, which is a possibility with Si diodes.

Webinar Links and Resources

Webinar Registration Link:

DigiKey Webinar Center:

DigiKey TechForum Webinar Posts:

Supplier Center:

DigiKey Vishay Product Offerings:

Resources:

Example Webinar Slides

-Much more in-depth slides and a copy of the PowerPoint presentation will be provided for customers that register to watch the recorded webinar.