Product details


Control mode Secondary-side regulation Frequency (Max) (kHz) 130 UVLO thresholds on/off (V) 10.3/9.3 Duty cycle (Max) (%) 99 Features SSR, Quasi-Resonant, X-Cap Discharge, Green Mode, Light Load Efficiency, Current Limiting Operating temperature range (C) -40 to 105 Rating Catalog Device type Controllers Topology Flyback open-in-new Find other Flyback controllers

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Flyback controllers


  • Green-Mode Controller With Advanced Energy
    Saving Features
  • Quasi-Resonant Mode Operation for Reduced
    EMI and Low Switching Losses (Low-Voltage
    Valley Switching)
  • Low Standby Current for Minimum System No-
    Load Power Consumption
  • Low Start-up Current: 25-µA Maximum
  • Programmable Line and Load Over-Voltage
  • Internal Over-Temperature Protection
  • Current Limit Protection
    • Cycle-by-Cycle Power Limit
    • Primary-Side Over-Current Hiccup Restart
  • 1-A Sink, –0.75-A Source TrueDrive™ Gate Drive
  • Programmable Soft-Start
  • Green-Mode Status Pin (PFC Disable Function)
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The UCC28600 is a PWM controller with advanced energy features to meet stringent world-wide energy efficiency requirements.

UCC28600 integrates built-in advanced energy saving features with high-level protection features to provide cost-effective solutions for energy-efficient power supplies. UCC28600 incorporates frequency fold-back and green-mode operation to reduce the switching losses at light-load and no-load conditions.

UCC28600 is available in the 8-pin SOIC package. Operating junction temperature range is –40°C to +105°C.

The UCC28600 Design Calculator, (SLVC104), located in the Tools and Software section of the UCC28600 product folder, provides a user-interactive iterative process for selecting recommended component values for an optimal design.

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Technical documentation

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Type Title Date
* Data sheet UCC28600 8-Pin Quasi-Resonant Flyback Green-Mode Controller datasheet (Rev. K) Aug. 31, 2015
Application note Selecting Electrolitic Bus Capacitor for Universal Input Jul. 17, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
White paper Advancing Power Supply Solutions Through the Promise of GaN Feb. 24, 2015
More literature Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter Oct. 29, 2013
Application note Compensation Design with TL431 for UCC28600 Jan. 16, 2013
User guide A 600-W Input, Isolated PFC Power Supply for AVR Amplifiers. (Rev. C) Sep. 20, 2012
Application note Flyback Transformer Design for the UCC28600 (Rev. A) Apr. 13, 2011
User guide Quasi-Resonant Flyback Converter Universal Off-Line Input 65-W Evaluation Module (Rev. C) Jun. 18, 2010
Application note Design Considerations for the UCC28600 (Rev. B) May 01, 2008
User guide UCC28600 120-W Evaluation Module User's Guide (Rev. A) Oct. 19, 2006
Application note Bootstrap Circuit for Green Mode Applications Jan. 27, 2006
More literature Seminar 300 Topic 8 - Switching Power Supply Design Review Feb. 15, 2001
More literature Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors Feb. 15, 2001

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

UCC28600 Evaluation Module
document-generic User guide

The UCC28600 evaluation module (UCC28600EVM-65W) is a 65 W off-line quasi-resonant flyback converter providing an 18 V regulated output at 3.6 A of load current, operating from a universal ac input between 85 Vac and 265 Vac with a frequency range of 47 Hz to 63 Hz.

The EVM uses the UCC28600 quasi-resonant (...)

  • Regulated 18 V and 65 W dc output
  • Universal off-line input voltage 85 Vac to 265 Vac
  • Meets EPA Energy Star™ efficiency requirements and standby power requirements
  • Power tunr-on time less than 3 seconds
  • Input power less than 1 W at 0.5 W output
  • Prebias load turn-on with prebias voltage from 0% to 95% of (...)

Design tools & simulation

SLUM536.ZIP (16 KB) - PSpice Model
SLUM607.ZIP (27 KB) - TINA-TI Spice Model
SLUM608.TSC (5529 KB) - TINA-TI Reference Design
SLVC104J.ZIP (230 KB)

Reference designs

Many TI reference designs include the UCC28600 Use our reference design selection tool to review and identify designs that best match your application and parameters.

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

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