Infineon XDPS2201DXUMA1

XDPS2201 integrates a hybrid flyback controller based on asymmetric half-bridge control. The half-bridge drives a conventional flyback transformer in conjunction with a series capacitor. The primary inductance of the flyback transformer and the series capacitor form a resonant tank, which enables zero-voltage switching of the half-bridge power switches and provides additional resonant power transfer during the conventional demagnetization phase of the flyback transformer. During normal operation, the charging cycle and associated power are regulated via direct peak current control, while the demagnetization phase employs timing control to ensure proper negative pre-magnetization — a prerequisite for achieving zero-voltage switching conditions in the half-bridge power switches. In addition to continuous resonant mode operation, the IC offers advanced zero-voltage resonant valley switching mode and burst mode to support maximum efficiency across the full load range and wide output voltage range.

• Configurable undervoltage and ovoltage protection
• Configurable integrated soft-start
• Configurable burst mode entry and exit current thresholds with small hysteresis
• Configurable overcurrent protection with two levels for peak and transient loads
• Configurable output overvoltage protection
• Configurable frequency reduction and cycle skipping for improved light-load efficiency
• Configurable switching frequency dithering
• Configurable propagation delay compensation for accurate peak current control
• Lead-free finish; RoHS compliant
• Halogen-free per IEC61249-2-21

• AC/DC switching power supplies
• Ultra-high power density adapters exceeding 20W/in³
• Ultra-high efficiency switching power supplies exceeding 93% efficiency