Backfeeding: Hunting unintentional power paths

Backfeeding, Backflow, Back-Driving, Reverse-Current, Reverse-Feeding – there are multiple names for the same problem, an unintentional and irregular flow of current in the reverse direction.

Have you ever encountered a power rail not going entirely down to zero even though the power supply is removed?

Have you ever seen an LED slightly lit up when the power is supposed to be turned off?

This webinar will discuss how backfeeding occurs and what it has to do with ESD protection. First, we will show techniques for discovering and measuring backfeeding. Figuring out where the backfeeding is coming from is often detective work for hunting the cause. After the sources are identified, it is time to talk about prevention. There are several ways to omit or reduce backfeeding in circuits. Some of these methods work only in certain situations, while others are complex. Finally, we will talk about the advantages and disadvantages of different solutions.

Often it is not easy to prevent backfeeding entirely. Therefore, we need to understand what the potential issues with backfeeding are. Are we damaging our circuits, or are we just fine? We need to understand the potential issues for judging how much we want to spend on prevention.

Key takeaways:

• Understand what causes backfeeding and the potential problems it can create
• Learn techniques for measuring backfeeding current and how to hunt the sources
• Identify potential backfeeding paths already in the system design phase
• Discuss different backfeeding prevention methods

Have your questions answered live by our experts

Register here for Free: https://www.toradex.com/webinars/backfeeding-unintentional-power-paths-hunting

Date:                                                                               

• India/Asia - Friday, August 27 2021, 12:30 P.M. - 01:30 P.M. (IST)
• Europe - Friday, August 27 2021, 09:00 A.M – 10:00 A.M. (CEST).
• Americas - Friday, August 27 2021, 10:00 A.M - 11:00 A.M (PDT), 11:00 AM – 12:00 P.M (MDT), 12:00 P.M – 01:00 P.M (CDT), 01:00 P.M – 02:00 P.M (EDT)

Speakers:

• Peter Lischer, Senior Hardware Developer, Toradex