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Product Overview

RAA223021 high voltage buck converter evaluation board is designed to demonstrate a low-cost high performance non-isolated AC/DC conversion from a universal input of 85VAC to 265VAC, to a 12V output with the output current up to 667mA. The board has built-in overcurrent, short-circuit, input brownout and overtemperature protection. The board is designed on a single side PCB with a full-wave input rectification. It is pre-compliant with conducted EMI requirements by EN55022/CISPR 22. It uses the RAA223021 SOIC-7 packaged IC. Typical applications home appliances, home automation, IoT, sensors, metering, industry control and bias power.
  • Universal input range
  • Single-side PCB with low cost external components
  • Standby power less than 20mW
  • No audible noise
  • Output current of 667mA max, output power of 8W
  • Efficiency of >77% at 100% load, 80% at 50% load
  • No-load power of 14mW at 120VAC and 16mW at 230VAC
  • Load regulation of -2.4%, load range 10% to 100%
  • Operating temperature range from -45°C to 85°C
  • Board dimension of 40mm x 60mm


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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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