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Low-Cost CVCC Flyback Controller With Primary-Side Regulation for Bipolar Power Device


Models (1)

Title Category Type Date
UCC28722 PSpice Transient Model PSpice Model ZIP 14 Jul 2015

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-VAC - 480-VAC input, multiple output flyback reference design

This offline flyback reference design uses the UCC28722 controller to generate 2 isolated outputs (5 V at 400 mA, 24 V at 300 mA) from an AC input (85 VAC - 480 VAC). The UCC28722 output drive interfaces to a bipolar transistor power switch, enabling a more efficient design than a typical design (...)

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

Description Part Number Company Tool Type
85-265VACin, 5V/1.5A AC/DC USB Charger with Auto-Detect based on PSR Flyback with BJT Switch PMP9594 Texas Instruments Reference designs
AC in, 12V0.5A and 5V50mA dual-rail output for appliances power supply PMP4387 Texas Instruments Reference designs

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 UCC28722

 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