AN2950 VIPer28L-10W 5V/10W Isolated Flyback Application Note

This application note describes a 5 V, 2 A application with 3.3 A peak current capability of 1.9 sec, using VIPer28, a new offline high-voltage converter from STMicroelectronics.


AN2950 VIPer28L-10W 5V/10W Isolated Flyback Application Note - cover page
Brand
STMicroelectronics
Document type
Application Note
Language
English
Pages
37
File format
PDF
File size
1.8 MB
Published
06 August, 2012
Updated
30 September, 2023
MD5 checksum
F9F214E33A3E3D870D9B324A161A42E5

About this manual

The document details a demonstration board for an offline high-voltage converter based on the VIPer28 IC. It is designed to deliver 5 V at up to 2 A continuous current, with a peak capability of 3 A sustained for short intervals (up to 1.9 seconds). The design utilizes a flyback topology operating at 60 kHz.

What's inside

  • Adapter features
  • Circuit description
  • Transformer characteristics
  • Testing the board
  • Regulation precision
  • Efficiency measurements
  • Overload protection
  • Output overvoltage protection
  • EPT function
  • Board layout

Specifications

Output voltage5V
Maximum output current2A
Peak output current3A

Frequently asked questions

What is the maximum continuous output current?

The maximum continuous output current is 2 A.

How long can the converter sustain peak load conditions?

It can manage a peak power demand for up to 1.9 seconds before shutting down.

What is the switching frequency of the converter?

The PWM operation runs at a frequency of 60 kHz.

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