Tiny, universal line to 3.3 V/30 mA reference design for circuit breakers
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Key Document


Using the UCC28880 FET integrated buck controller, this design provides a universal line to non-isolated 3.3 V/30 mA for arc fault and ground fault circuit Interrupter circuit breaker systems. This tiny design is built on a single-layer PCB in a space optimized 0.680" by 0.480" footprint by implementing a half-bridge rectifier and not requiring a large transformer.

  • Tiny, 0.680" x 0.480" footprint for space constrained solutions
  • Universal AC input, 3.3-V DC output
  • Less than 300 mW power loss minimizes thermal dissapation
  • 3% load regulation provides a stable output

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Design Files

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(Output Voltage 1)
Vin (Min) (V)50
Vin (Max) (V)250
Vout (Nom) (V)3.3
Iout (Max) (A).03
Output Power (W).099
Input TypeAC
TopologyBuck- Non Sync

TI Devices (1)

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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 Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1609 17 Dec 2018
Design files (6)
Title Type Size (KB) Date
ZIP 1172 17 Dec 2018
ZIP 354 17 Dec 2018
PDF 173 17 Dec 2018
PDF 41 17 Dec 2018
PDF 54 17 Dec 2018
PDF 75 17 Dec 2018

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