In this video from Texas Instruments, market and regulatory forces driving adapters to higher power density are discussed. We also introduce the active clamp flyback topology and discuss operation of the UCC28780 controller. The video discusses design considerations for high power density and high efficiency adapters.
This session will cover the basic requirements driving AC to DC adaptors and provide an introduction to the active clamp flyback topology as well as Texas Instruments' UCC28780 controller. We'll also cover some important design considerations for high power density adapters and then finally review a 65 watt GaN-based USB PD adapter design. These concepts are applicable to high efficiency systems and are generally limited to around 100 watts or less.
This presentation is split into two videos. In this first video, we will cover the first two bullets listed here. We'll go over basic requirements for AC to DC power adapters and introduce the active clamp flyback topology. AC to DC adapter efficiencies are being driven higher by regulatory standards, such as those that come from the Department of Energy and the European Code of Conduct. These standards are incentivising IC manufacturers to develop new generations of controllers to reach efficiencies that were previously impractical.
To watch the video, click here.