Product details

Control mode Current, Primary-side regulation, Voltage UVLO thresholds on/off (V) 9.5/6.5 Duty cycle (max) (%) 99 Switching frequency (max) (kHz) 115 Features Adjustable switching frequency, Current limiting, Green mode, High-voltage startup, Input line monitor, Integrated Switch, IoT compatible, Leading edge blanking, Light-load efficiency, Soft start, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog Device type Controllers Topology Buck, Flyback
Control mode Current, Primary-side regulation, Voltage UVLO thresholds on/off (V) 9.5/6.5 Duty cycle (max) (%) 99 Switching frequency (max) (kHz) 115 Features Adjustable switching frequency, Current limiting, Green mode, High-voltage startup, Input line monitor, Integrated Switch, IoT compatible, Leading edge blanking, Light-load efficiency, Soft start, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog Device type Controllers Topology Buck, Flyback
SOIC (D) 7 29.4 mm² 4.9 x 6
  • Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler
  • ±5% Output Voltage Regulation Accuracy
  • ±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation
  • 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
  • 115-kHz Maximum Switching Frequency Design for High-Power Density
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • Thermal Shut Down
  • Low Line and Output Over-Voltage Protection
  • Constant-Voltage (CV) and Constant-Current (CC) Output Regulation Without Optical-Coupler
  • ±5% Output Voltage Regulation Accuracy
  • ±5% Output Current Regulation With AC Line and Primary Inductance Tolerance Compensation
  • 700-V Start-Up and Smart Power Management Enables <30-mW Standby Power
  • 115-kHz Maximum Switching Frequency Design for High-Power Density
  • Valley Switching and Frequency Dithering to Ease EMI Compliance
  • Thermal Shut Down
  • Low Line and Output Over-Voltage Protection

The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltageand current regulation without the use of an optical coupler. Both devices incorporate a 700-Vpower FET and a controller that process operating information from the flyback auxiliary windingand power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enablethe very low stand-by power consumption.

Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peakprimary current modulation, allow operating efficiencies to meet or exceed applicable standards.Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses.Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter

The UCC28910 and UCC28911 are high-voltage flyback switchers that provide output voltageand current regulation without the use of an optical coupler. Both devices incorporate a 700-Vpower FET and a controller that process operating information from the flyback auxiliary windingand power FET to provide a precise output voltage and current control. The integrated high-voltage current source for startup that is switched off during device operation, and the controller current consumption is dynamically adjusted with load. Both enablethe very low stand-by power consumption.

Control algorithms in the UCC28910 and UCC28911, combining switching frequency and peakprimary current modulation, allow operating efficiencies to meet or exceed applicable standards.Discontinuous conduction mode (DCM) with valley switching is used to reduce switching losses.Built-in protection features help to keep secondary and primary component stress levels in check across the operating range. The frequency jitter helps to reduce EMI filter

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 10
Type Title Date
* Data sheet UCC28910, UCC28911 High-Voltage Flyback Switcher with Primary-Side Regulation and Output Current Control datasheet (Rev. D) PDF | HTML 19 Dec 2016
More literature Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 31 Aug 2021
Technical article Overcoming common design challenges in an UV sterilization box system 27 Jul 2020
Technical article Making a solar inverter more reliable than the sun 01 Aug 2017
More literature Troubleshooting TI PSR controllers 03 Oct 2016
Technical article Differences between PSR and SSR in bias power-supply design 08 Apr 2016
Technical article Design an energy-efficient, lower-acoustic cooker hood with an elegant user interface 29 Mar 2016
More literature Control Challenges for Low Power AC/DC Converters 02 Oct 2015
More literature Control Challenges for Low Power AC/DC Converters (PPT) 02 Oct 2015
EVM User's guide Using the UCC28911EVM-718 06 Mar 2015

Design & development

Please view the Design & development section on a desktop.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos