Vivanco UNIVERSAL SWITCHMODE AC TO DC MAINS ADAPTERS WITH USB CHARGING FUNCTION Guida Utente Scaricare il pdf (Pagina 53)

Hardware Design

FIGURE 2-15: FLYBACK TRANSFORMER CONSTRUCTION

2.5.1.3 OUTPUT CAPACITORS

The capacitors selected for outputs are 100 μF, 25V and 470 μF, 10V, for gate drive

voltage rails and the dsPIC DSC device voltage rails, respectively. The ripple current

rating for United Chemi-Con electrolytic capacitors are 0.34 Arms and 0.64 Arms,

respectively.

3 layers 0.05 mm Melinex

8 turns of 0.4 mm 6 turns of 0.4 mm

6 turns of 0.5 mm5 turns of 0.5 mm

55 turns of 0.16 mm

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 117 118

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Vivanco UNIVERSAL SWITCHMODE AC TO DC MAINS ADAPTERS WITH USB CHARGING FUNCTION Guida Utente Pagina 53