Infineon Technologies AGXDPS21081XUMA1AC to DC Switching Converters

High performance flyback controller IC - multi-mode digital, forced quasi-resonant

The XDP™ digital power XDPS21081 is a flyback controller with zero voltage switching (ZVS) on the primary side to achieve high efficiency with simplified circuitry and economical switches resulting in lower BOM cost.

By driving an external low-voltage switch to induce a negative current to discharge the main high voltage MOSFET, switching losses can be reduced further than traditional valley switching types of switching schemes.

To achieve high efficiency with synchronous rectification, the newly released XDPS21081 multi-mode digital forced-frequency resonant (FFR) flyback controller IC ensures DCM (discontinued conduction mode) operation via valley detection for a safe and robust operation.

Applications

>  Adapter
>  USB PD charger
>  Smartphone charger

Block Diagram

Features

>  Digital configurable flyback controller IC
>  Integrated start-up cell
>  Integrated dual gate driver
>  Improved and optimized ZVS operation with highline input voltage
>  High switching frequency of up to 140kHz
>  Ensuring DCM operation with valley detection
>  Light load control with active burst mode

Benefits

>  High density with high switching frequency
>  High efficiency with adaptive ZVS operation and frequency law for variable output design
>  Safe and robust SR operation with DCM operation
>  Ease of design with dual integrated gate drivers and start-up cell
>  Ease of configurable design with GUI tool

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Fast charging solution XDP™ digital power XDPS21081

Product Brief

Application Notes