UCC28720 (ACTIVE) Constant-Voltage, Constant-Current Controller with Primary-Side Regulation for Bipolar Power Devices

 

Design kits & evaluation modules (1)

Name Part# Type
UCC28720EVM-212 5W Evaluation Module for USB off-line adapter UCC28720EVM-212 Evaluation Modules & Boards

Reference designs

85 to 265VAC Input 12V/3W Low Cost Flyback with BJT Reference Design

This 12V/3W reference design is optimized for very low cost and yet maintains good efficiency. Two key factors for minimizing cost are a BJT is used for the main power switch, and primary-side regulation (PSR) eliminates the need for an optocoupler. The UCC28720 quasi-resonant flyback controller is (...)

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Software (2)

UCC28722 MathCad Design Tool (Rev. A)  (ZIP 2330 KB )    28 Mar 2014  
UCC28722 Excel Design Tool  (ZIP 44 KB )    05 Feb 2014  

WEBENCH® Designer UCC28720

 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 -40 to 125°C