AN1736 is an ST application note that introduces the VIPer22A dual output reference board, which has an input voltage range of 90 to 264 VAC and outputs 5V and 12V at a total output power of 10W.
The document details an off-line wide range power supply reference design using the VIPer22A controller. The board operates at a switching frequency of 60kHz and features secondary regulation with an optocoupler. It provides two outputs: 5V at 1A and 12V at 0.42A, achieving a total output power of 10W.
| Input voltage range | 90 to 264Vac |
|---|---|
| Output voltages | V1= 5V; V2=12V |
| Total output power | 10W |
| Switching frequency | 60kHz |
| Efficiency | 75% typical |
The board accepts an input voltage range of 90 to 264Vac.
One output delivers 5V at 1A and a second output delivers 12V at 0.42A.
Yes, the design meets EN55022 class B EMI specification.