Low Power Off-line Buck Supplies a Fixed Voltage 13V@120mA from Universal Line
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The PMP8550 reference design uses the UCC28880 low power, low cost, off-line buck converter with integrated 700V MOSFET to generate a non-isolated 13V/120mA output from a Universal AC line input. Thanks to its hysteretic mode, no loop compensation is needed reducing BOM count to 23 components producing a single sided, double layer board size of just 38mmx32mmx22mm which can be used in numerous industrial applications such as smart meters, home automation equipment and white goods.

  • High-side buck topology
  • Regulated output voltage between 13V and 12.8V with minimum 10% load
  • Reference design total quiescent current draw of 119uA at high line
  • Excellent system performance under excessive currents: Along with current limit function, the controller’s inductor current runaway protection helps protect against under load short-circuit conditions to ensure design reliability.
  • Thermal protection: Over-temperature protection with hysteretic re-start for safe operation


TI Devices (1)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
UCC28880  High voltage switcher for Non-isolated AC/DC Conversion  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)
UCC28880 Download Download

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Technical documentation
User guide (1)
Title Type Size (KB) Date
PDF 448 14 Apr 2014
Design files (2)
Title Type Size (KB) Date
PDF 15 14 Apr 2014
PDF 27 14 Apr 2014

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