The UCC2871x family of flyback power supply controllers provides isolated-output Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current.
An internal 700-V start-up switch, dynamically-controlled operating states and a tailored modulation profile support ultra-low standby power without sacrificing start-up time or output transient response.
Control algorithms in the UCC28710 family allow operating efficiencies to meet or exceed applicable standards. The output drive interfaces to a MOSFET power switch. Discontinuous conduction mode (DCM) with valley switching reduces switching losses. Modulation of switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.
The controllers have a maximum switching frequency of 100 kHz and always maintain control of the peak-primary current in the transformer. Protection features help keep primary and secondary component stresses in check. The UCC28710 allow the cable compensation to be programmed. The UCC28711, UCC28712 and UCC28713 devices allow remote temperature sensing using a negative temperature coefficient (NTC) resistor while providing fixed cable-compensation levels.
| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | UCC2871x Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. C) | PDF | HTML | 30/06/2017 | |
| Guía de selección | Current Sense Amplifiers (Rev. E) | 20/09/2021 | |||
| Nota sobre la aplicación | Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips | PDF | HTML | 31/08/2021 | ||
| Nota sobre la aplicación | Minimize Standby Consumption for UCC287XX Family | 1/08/2019 | |||
| Guía de selección | Power Management Guide 2018 (Rev. R) | 25/06/2018 | |||
| Nota sobre la aplicación | Troubleshooting TI PSR controllers | 3/10/2016 | |||
| Informe | Control Challenges for Low Power AC/DC Converters | 2/10/2015 | |||
| Informe | Control Challenges for Low Power AC/DC Converters (PPT) | 2/10/2015 | |||
| Más documentación | Exposing the Inner Behavior of a Quasi-Resonant Flyback Converter | 29/10/2013 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
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| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| SOIC (D) | 7 | Ultra Librarian |
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