UCC28740 (ACTIVE) Constant-Voltage, Constant-Current Flyback Controller Using Opto-Coupler Feedback


Design kits & evaluation modules (2)

Name Part# Type
UCC24630 65W AC/DC Adapter UCC24630EVM-636 Evaluation Modules & Boards
UCC28740EVM-525 Evaluation Module UCC28740EVM-525 Evaluation Modules & Boards

Reference designs

99% Efficient 1kW GaN-based CCM Totem-pole Power Factor Correction (PFC) Converter Reference Design

Continuous-Conduction-Mode (CCM) Totem-pole power factor correction (PFC) is a simple but efficient power converter.  To achieve 99% efficiency, there are many design details that need to be taken into account.  The PMP20873 reference design uses TI’s 600VGaN  power stage (...)

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

Description Part Number Company Tool Type
85 to 265VAC Input 4W Dual Output 12 and 3.3V Flyback Reference Design PMP9213 Texas Instruments Reference designs
Universal AC Input 14V/2.4A Flyback With 88% Efficiency Reference Design PMP9144 Texas Instruments Reference designs
Universal AC Input 5V/2A USB Adaptor with DCM/Valley-Switching and Opto Feedback Reference Design PMP9204 Texas Instruments Reference designs

Software (1)

UCC28740 Design Calculator (Rev. B)  (ZIP 317 KB )    06 Apr 2016  

WEBENCH ® Designer UCC28740

 AC  DC  
AC Frequency  60 Hz  50 Hz
Use Isolated Output?
Rectification Type
  Min   Max Range
VinRMS -  V
Vout  V
Iout  A
Ambient Temp  °C