This application note presents the circuit diagram and design details of the VIPER27LN demonstration board, which provides a wide range input voltage (90 V-265 V) and 5 V-12 W output power for auxiliary power applications in consumer applications such as LCD or plasma TVs, some models of DVD recorders, set-top boxes with hard disk, as well as desktop computers.
The document presents a demonstration board for the VIPER27LN offline high-voltage converter, designed for auxiliary power supplies in consumer applications like LCD TVs and set-top boxes. The board is optimized for very low standby consumption to meet stringent energy-saving requirements, supporting an input voltage range of 90 V to 265 V and an output of 5 V at up to 2.4 A.
| Input voltage range | 90 V to 265 V |
|---|---|
| Output voltage | 5 V |
| Max output current | 2.4 A |
| Precision of output regulation | +5% |
| High-frequency output voltage ripple | 50 mV |
| Max ambient operating temperature | 60 °C |
The board supports a wide input voltage range from 90 V to 265 V.
The maximum output current is rated at 2.4 A.
The transformer was manufactured by Wirth Elektronik.