Non-isolated offline power supply demonstration board based on the VIPER22A-E

Many appliances today use non-isolated power supplies to furnish the low output power required to run a microcontroller, LED displays, and relays or AC switches. This type of power supply has a single rectifier to reference the neutral to output ground in order to fire Triacs or AC switches.

This demonstration board can use the VIPER12A-E or the VIPER22A-E, which are pinfor- pin compatible and can supply power for a wide variety of applications.

The VIPER12A-E is used for 12 V at 200 mA and 16 V at 200 mA, while the VIPER22A-E is used for 12 V at 350 mA and 16 V at 350 mA.

The same board can be used for any output voltage from 10 V to 35 V.

For more design details, please refer to application note AN1357.

Key Features

  • Integrated short-circuit protection
  • 70% to 80% efficiency at full load
  • Input voltage range 85 Vac to 264 Vac
  • Lowest possible component count
  • Input voltage frequency 50/60 Hz
  • No-load consumption around 200 mW
  • Integrated thermal overload protection

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Design

Technical Documentation

Product Specifications
Description Version Size
DB0693 DB0693: Non-isolated offline power supply demonstration board based on the VIPER22A-E 2.1 88 KB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
PCB layout 1.0 131 KB
Bill of Materials
Description Version Size
Bill of materials 1.0 50 KB
Schematic Packs
Description Version Size
Board schematic 1.0 348 KB

Legal

License Agreement
Description Version Size
Evaluation products license agreement 1.0 125 KB
Support & Community

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STEVAL-ISA035V1 VIPER22ADIP-E Active 56.35 1 NEC EAR99 ITALY MORE INFO Buy Direct Add to cart DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-ISA035V1 ActiveCARDIndustrialEcopack2
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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