Hybrid Flyback Controller With Excessive-Energy Density And Effectivity

It integrates flyback topology with resonant converter for pure gentle switching and fewer switching losses

Fast know-how and market developments within the quick charger and adaptor market are constantly difficult the designers of energy provide methods.

To fulfill the growing demand for top energy density and power effectivity, the XDP household by Infineon Applied sciences AG now comes based mostly on an uneven half-bridge flyback topology. The XDPS2201 is a extremely built-in, multi-mode, digital and configurable hybrid flyback controller concentrating on high-density AC-DC energy provides, together with USB PD quick charger and adaptor functions. 

The XDPS2201 combines the simplicity of a conventional flyback topology with the efficiency of a resonant converter, which permits pure gentle switching and reduces switching losses related to high-switching frequency designs. The controller permits zero voltage switching (ZVS) and 0 present switching (ZCS) throughout AC line inputs, load circumstances and variable output voltages. This function is very useful for high-frequency designs with a planar transformer that may sometimes be present in USB PD charger functions.

To realize optimised efficiency below numerous output voltage, load and line enter circumstances, the XDPS2201 comes with an clever, self-adaptive digital algorithm. It helps a multi-mode operation to make sure that the best-fitting operation mode for every situation is chosen to yield a constantly high-efficiency stage. The hybrid flyback controller additionally integrates a complete suite of safety options, together with: 

  • Brown-in and -out
  • Twin-level overcurrent, output over-voltage, output under-voltage and over-temperature detection.

The uneven half-bridge flyback topology permits the implementation of CoolMOS MOSFETs to attain the very best system effectivity and energy density. The XDPS2201 is driving each high- and low-side MOSFETs in an uneven management method. The product options an built-in high-side driver that enables BOM financial savings of as much as 20 exterior elements. The topology permits a snubber-less design and using excessive voltage MOSFETs from 500 V and up, which reduces the quantity in addition to element prices.

Value-effectively, the XDPS2201 helps excessive energy density designs with an effectivity of as much as 93.8 per cent and greater than 92 per cent on common throughout completely different AC line and cargo circumstances.

Obtainable in a DSO-14 SMD bundle, the XDPS2201 may be ordered from Infineon Applied sciences AG now. 

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