STMicroelectronics provides a recommended PCB layout in the application note AN4571, which includes guidelines for component placement, thermal management, and routing to minimize electromagnetic interference (EMI) and ensure reliable operation.
The transformer selection depends on the input voltage, output voltage, and power rating of your design. STMicroelectronics provides a transformer selection guide in the datasheet, and you can also use online tools such as the STMicroelectronics Transformer Selector to find a suitable transformer.
The VIPER22AS has a high power density, so thermal management is crucial. Ensure good airflow around the device, use a heat sink if necessary, and follow the thermal design guidelines in the datasheet to prevent overheating and ensure reliable operation.
The VIPER22AS has a built-in OVP feature that can be enabled by connecting the OVP pin to a voltage divider network. The OVP threshold can be set by selecting the appropriate resistor values, and the datasheet provides a calculation formula to determine the required resistor values.
The VIPER22AS is a switching converter, and EMI can be a concern. To minimize EMI, follow the layout guidelines in the datasheet, use a shielded transformer, and add EMI filters such as common-mode chokes and capacitors to the input and output lines.
VIPER22AS datasheet
by STMicroelectronics
