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Date: 17th July 09
Power supply circuit reference design
with 85-265V input to deliver 5 V @ 0.6 Amps
Power Integrations is offering a DC power supply reference
design DER-227 for driving a 3W load at output voltage of
5 Volts and operates from a wide input voltage of 85V to
265 V AC. The key specialty of this design is, this design
consumes a less standby power of only 10 milli Watts making
this design compliant with European Union's Ecodesign Directive
for Energy-Using Products (EuP).
This reference design based on Power Integrations' LNK363DN
IC, require 3-4 aluminum electrolytic capacitor and a transformer
close to a size of typical aluminum electrolytic capacitor.
The complete design can easily fit into plastic enclosures
of mobile phone chargers/adapters.
Reference design paper provides the power supply specification,
schematic/circuit diagram, bill of materials (BOM), transformer
documentation, printed circuit layout (PCB), and performance
data.
The designers of external adapters/chargers used in mobile
phones or such sub 5watts electronics devices whose need
to be powered from a input voltage of 110V, 220V, 230V AC
mains power line can adopt this design with a bit of design
tweaking to get the required current and voltage specifications.
DER-227 can be downloaded from www.powerint.com/PDFFiles/der227.pdf
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