电源设计的参考设计：2.5 W应急照明电源。

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DI202 Design Idea LinkSwitchLP 25 W Emergency Lighting Power Supply Application Device Power Output Input Voltage Output Voltage Topology Emergency Lighting LNK564PG 25 W 185 265 VAC 12 V Flyback Design Highlights Low cost low component count Clampless flyback topology EShield transformer winding technique for reduced EMI Adjustable output voltage 8 V to 18 V through single resistor selection Integrated input line low voltage monitor Active high signal for ballast triggering Ea......