Universal AC Input 7.5W Adapter Reference Design
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This 5V / 1.5A adapter solution is fully tested and passes EMI and EMC (CE,RE) safety requirements. It implements a low cost primary side Bipolar controller UCC28722. The efficiency of the design is 78% with standby power less than 100mW. The design is very slim; the size is 30mmX35.3mmX8mm and has been thermally characterized.

  • Fully tested to comply with EMC(CE,RE) and safety requirement
  • <100mW no load power over input range
  • Valley control PSR controller
  • Good thermal performance with few component count and low shell temperature
  • Small form factor: 30mmX35.3mmX8mm
  • Low Cost

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Schematic/Block Diagram

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Test Data

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Design Files

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(Output Voltage 1)
Vin (Min) (V)85
Vin (Max) (V)265
Vout (Nom) (V)5
Iout (Max) (A)1.5
Output Power (W)7.5
Input TypeAC
TopologyFlyback- Quasi Resonant

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28722  Low-Cost CVCC Flyback controller With primary-side regulation for bipolar Power Device  Offline & isolated DC/DC controllers & converters  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
UCC28722 Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 403 06 Feb 2014
Design files (4)
Title Type Size (KB) Date
ZIP 194 16 May 2014
PDF 155 06 Feb 2014
PDF 111 06 Feb 2014
PDF 31 06 Feb 2014

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