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Constant-Voltage, Constant-Current PWM With Primary-Side Regulation


Models (3)

Title Category Type Date
UCC2870x TINA-TI Transient Reference Design TINA-TI Reference Design TSC 16 Jan 2018
UCC2870x TINA-TI Transient Spice Model TINA-TI Spice Model ZIP 16 Jan 2018
UCC2870x PSPICE Transient Model PSpice Model ZIP 13 Feb 2015

Design kits & evaluation modules (1)

Name Part# Type
UCC28700 evaluation module UCC28700EVM-068 Evaluation Modules & Boards

Reference designs

Universal AC Input 10.6W/5V Adapter for Charger Applications, Compliant with EC CoC V5 (Tier2) Norms

This 5V2A charger solution is fully tested and passes EMI and EMC (CE) requirements. It implements a high efficiency primary side controller UCC28703. This design meet COC V5 Tier2 specification and measures 47mmX34mmX15mm and has been thermally characterized. A low cost EE16C general transformer is (...)

View the Important Notice for reference designs covering authorized use, intellectual property matters and disclaimers.

Software (2)

MathCAD Design Tool (Rev. C)  (ZIP 2519 KB )    28 Mar 2014  
UCC28700 Excel 97 Design Tool (Rev. B)  (ZIP 205 KB )    28 Mar 2014  

WEBENCH® Designer UCC28703

 AC  DC  
AC Frequency  60 Hz  50 Hz
Use Isolated Output?
  Min   Max Range
VinRMS  V 85.00 to 480.00V
Vout  V 3.3 to 25V
Iout  A ≤ 10A
Ambient Temp  °C -20 to 125°C