The UCC28700-Q1 of flyback power supply controllers provides 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. Low start-up current, dynamically controlled operating states and a tailored modulation profile support very low standby power without sacrificing start-up time or output transient response.
Control algorithms in the UCC28700-Q1 allows 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 130 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 UCC28700-Q1 allows the level of cable compensation to be programmed.
| Documentación principal | Tipo | Título | Opciones de formato | Descargar la versión más reciente en inglés | Fecha |
|---|---|---|---|---|---|
| * | Hoja de datos | UCC28700-Q1 Constant-Voltage, Constant-Current Controller With Primary-Side Regulation datasheet (Rev. A) | PDF | HTML | 8/12/2020 | |
| Informe | Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters | PDF | HTML | 11/10/2023 | ||
| Application brief | Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C) | PDF | HTML | 16/02/2023 | ||
| Información sobre seguridad funcional | UCC28700-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 18/08/2020 | ||
| 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 | |||
| Artículo técnico | Hybrid electric vehicles and electric vehicles need different isolated DC/DCs to w | PDF | HTML | 27/12/2017 | ||
| Nota sobre la aplicación | Troubleshooting TI PSR controllers | 3/10/2016 |
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PMP10739 is a 3.6W buck converter using the UCC28700 controller IC. The design accepts an input voltage of 90Vin to 110Vin and provides an output of 12Vout capable of supplying 0.3A of current to the load. The UCC28700 has a frequency dithering feature for reduced EMI.
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
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