XDPS2222
Driving giGaNtic performance in adapters and chargers – industry’s first PFC + hybrid flyback combo IC for USB power delivery up to 240 W
The XDP™ digital power XDPS2222 is a highly integrated device combining both PFC boost and hybrid flyback (HFB) (asymmetrical half-bridge as from literature) conversion features. The high level of integration allows for seamless operation as well as optimal control of the two conversion stages, delivering class-leading performance.
This innovative controller enables high power density designs and high system efficiency meeting international regulatory standards on power efficiency (such as EU CoC Version 5 Tier 2 and DoE Level VI) as well as an effective control of the wide output voltage (from 5 V to 48 V) for the latest USB-PD extended power range (EPR) standard V3.1. It is very well suited to drive GaN-based devices, such as Infineon’s CoolGaN™ switches.
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Summary of Features
- High-performance multi-mode PFC with critical conduction mode operation
- High-efficiency multi-mode hybrid-flyback topology with adaptive resonant period
- Supports USB-PD standard V3.1 extended power range (EPR) with a wide output voltage up to 48 V
- Highly integrated combo controller for the PFC and hybrid flyback topology, including a 600 V start-up cell
- DSO-14 (150-mil) package
Benefits
- Low no-load input standby power performance
- Low BOM cost and count
- Low standby and high efficiency across various line/load conditions
- High power density and high switching frequency
- Easily configurable
- Optimization via GUI tools
Potential Applications
- Adapters and chargers
- with ultra-high power density
- with extended power range (EPR)
The XDPS2222 controller is integrated with a high-side driver coupled with a coreless transformer and a low-side driver driving the high- and the low-side switches of the HFB stage, as well as a driver for the PFC switch. It enables a simple system structure out of the traditional flyback topology, but comes with the performance of a resonant half-bridge converter. The integrated, multi-mode PFC controller utilizes a quasi-resonant switching scheme, which operates in critical conduction mode and ensures high efficiency across different line input and load conditions. In addition, a 600 V start-up cell offers good BOM savings. A comprehensive suite of protection offers a reliable operation under all operating conditions.
Besides these, the controller has an embedded digital core and supports system fine-tuning by configurable parameters. This allows taking this controller as a development platform for different applications and/or power levels and makes the life of power system design engineers easier.
