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
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | UCC28910, UCC28911 High-Voltage Flyback Switcher with Primary-Side Regulation and Output Current Control datasheet (Rev. D) | 19 Dec 2016 |
| Application note | Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips | 31 Aug 2021 | |
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| Application note | 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 | |
| White paper | Control Challenges for Low Power AC/DC Converters | 02 Oct 2015 | |
| White paper | Control Challenges for Low Power AC/DC Converters (PPT) | 02 Oct 2015 | |
| User guide | Using the UCC28911EVM-718 | 06 Mar 2015 |
For additional terms or required resources, click any title below to view the detail page where available.
The UCC28911EVM-718 evaluation module is an offline Flyback power supply that provides isolated output voltage and current regulation without the use of an optocoupler and secondary-side feedback components. The input accepts a voltage range of 85VAC to 265VAC, 47Hz to 64Hz. The evaluation module (...)
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