The 170 W XDPS2201 hybrid-flyback controller is a reference design which uses Infineon’s
XDP™ digital power XDPS2201 hybrid-flyback controller and a CoolSET™ daughter board with Infineons’s ICE5AR4770AG quasi-resonant (QR) flyback controller. The converter is very high efficiency of 95 percent and can operate in cc cv mode, make it suitable for battery charging application. Hybrid topology has the advantage of an extremely small transformer size compared to normal flyback.