UCC28704 5V/10W Off-Line Power Supply With PSR for USB Wall Adapters Evaluation Module UCC28704EVM-724 (ACTIVE)

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The UCC28704EVM-724 is a 10-W off-line isolated power supply providing 5-V output on a USB-A port. The converter output voltage and current are regulated to 5% accuracy without using an optocoupler or secondary-side feedback circuits. The EVM demonstrates a low-cost solution to comply with global external power-supply efficiency standards (Department of Energy Level VI, EU Code of Conduct V5 Tier-2, etc.) without adding a secondary-side synchronous rectifier.

  • Universal AC input range (85-V to 265-V AC), 5-V/2-A isolated output
  • 5% output voltage (CV) and current (CC) accuracy with primary-side regulation (PSR)
  • 83% average efficiency and <60-mW standby power performance exceeds DoE Level VI and EU CoC V5 Tier-2 EPS standards
  • 80-mV p-p output voltage ripple at end of 0.15-Ω cable
  • Fault protections: output overvoltage, overcurrent, and load short circuit

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UCC28704 5V/10W Off-Line Power Supply With PSR for USB Wall Adapters Evaluation Module


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Technical Documents
Datasheet (1)
Title Type Size (KB) Date
PDF 1214 17 Feb 2016
User guides (1)
Title Type Size (KB) Date
PDF 1348 26 Jan 2016
Design files (2)
Title Type Size (KB) Date
ZIP 549 27 Jun 2017
ZIP 9016 27 Jun 2017
More literature (1)
Title Type Size (KB) Date
PDF 38 02 Jan 2019

TI Devices (1)

Part Number Name Product Family
UCC28704  Off-Line Constant-Voltage Constant-Current Flyback Controller With Primary-Side Regulation (PSR)  Offline & isolated DC/DC controllers & converters 

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