S09 - Common Mistakes in Power Supply Designs

Sunday, March 19, 2023

2:30 PM – 6:00 PM ET

Location: W102

Speaker(s)

Sheng-Yang Yu, PhD

Systems and Applications Engineer
Texas Instruments, Inc., United States

PDF
Fei Yang

System Engineer
Texas Instruments, United States
Brian King

Texas Instruments, United States
Pradeep Shenoy, PhD

Power Design Services
Texas Instruments, Inc., United States

This presentation will summarize common mistakes an engineer could make when designing power supplies. The presentation will be conducted in an interactive way by first showing an issue with an actual measurement (phenomenon) and then letting the audience brainstorm and comment on what could be wrong. After that, we reveal the root cause of the issue, how to avoid the issue, and related design suggestions. Common mistakes in three key areas – non-isolated DC-DC converter, AC-DC Flyback converter, and power supply layout will be discussed. Ten common mistakes on each area will be discussed. After 30 common mistakes are discussed, we will extend the discussion to where engineers need to take extra care of when designing with wide bandgap devices (such as gallium nitride (GaN) FETs) that have high dV/dt.