Features
• Low line QR, high line FQR ZVS
• Configurable ZVS enabled line voltage
• Low side ZVS MOSFET gate control
• ZVS optimization per variable Vout
• Built-in protection modes
• Brown-in and brownout detection via integrated HV startup cell
• Pb-free lead plating; RoHS compliant
• Halogen-free according to IEC61249-2-21

Applications
• High density adapter/charger

Description
The XDPS21081 is a digital PWM controller for high density adapter applications based on Forced Quasi-resonant ZVS flyback topology. It provides low line QR and high line FQR ZVS operation. A wide feature set is provided in a DSO-12 package and requires only a minimum of external components. An integrated ASSP digital engine provides advanced algorithms for multi-mode operation and protection features. A forced quasi resonant ZVS operation support optimized high density adapter system dimensioning. In addition a one-time-programmable (OTP) unit is integrated to provide a selective set of configurable parameters, which can be matched to a dedicated system design.