DI-115 Manuals

Power Integrations DI-115 TinySwitch-PK Application Note

The DI-115 TinySwitch‑PK is a wide‑range, multiple‑output flyback power supply designed for DVD players and set‑top boxes. It delivers 7.5 W continuous and 13 W peak output power from an 85‑265 VAC input, providing regulated 3.3 V, 5 V, 12 V and –12 V outputs. Key design features include excellent cross‑regulation, sum‑regulated dual outputs, high energy efficiency, and automatic restart after a shorted‑output condition.

The document includes detailed schematics, transformer parameters, standby‑power curves, and EMI performance data. Operating at 132 kHz in normal mode and switching to 264 kHz under peak load, the supply achieves less than 150 mW no‑load power consumption at 230 VAC and meets CEC/ENERGY STAR 2008 efficiency requirements.

Covers: Design Highlights · Operation · Transformer Parameters · Standby Power · EMI Performance · Key Design Points