Infineon Technologies AG expands its XDP family by adding the first application-specific standard product based on an asymmetric half-bridge flyback topology. Available in a DSO-14 SMD package, the XDPS2201 is a highly integrated, multi-mode, digital and configurable hybrid flyback controller targeting high-density AC-DC power supplies, including USB PD fast charger and adapter applications.
XDPS2201 combines the simplicity of a traditional flyback topology with the performance of a resonant converter. This combination allows natural soft switching, which reduces switching losses associated with high switching frequency designs. The controller enables zero voltage switching (ZVS) and zero current switching (ZCS) across AC line inputs, load conditions and variable output voltages. This feature is highly beneficial for high-frequency designs with a planar transformer that can typically be found in USB PD charger applications.
To achieve optimized performance under various output voltage, load and line input conditions, the XDPS2201 comes with an intelligent, self-adaptive digital algorithm and supports highest power density designs with an efficiency of up to 93.8 percent and more than 92 percent on average across different AC line and load conditions.