UCC28750-CALC — Excel calculator tool for the UCC28750 Flyback controller
Productos y hardware compatibles
Productos
AC/DC controllers
- UCC28750 — Controlador flyback en modo actual con regulación del lado secundario (SSR) para aplicaciones fuera
UCC28750 is a highly-integrated current-mode, continuous-conduction-capable, PWM controller optimized for high performance, low standby power, and cost effective offline flyback converter applications using an opto-coupler. During light-load conditions the device enters frequency foldback and burst modes, improving light-load efficiency. The burst-mode algorithm used in UCC28750 controls the minimum effective switching frequency to prevent audible noise during light-load conditions. Frequency dithering improves EMI performance, and is active in normal, frequency foldback, and power boost operations.
UCC28750 provides protection features that enable a robust converter design with minimal external components. Output over-power protection (OPP) and cycle-by-cycle over-current limit protect the load and power-stage components from electrical stress. Over-voltage and under-voltage lockout (OVLO and UVLO) prevent switching in unwanted input conditions. The FLT pin provides line brown-out sensing and protection, or external over-temperature and over-voltage protection, depending on the device variant. The FLT pin is also used to disable the device through external control by pulling the pin to ground, regardless of the device variant.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | UCC28750 Current-Mode Flyback Controller with Secondary-Side Regulation (SSR) for Off-Line Applications datasheet | PDF | HTML | 01 abr 2022 |
| Technical article | Considerations for auxiliary flyback power supplies (Rev. A) | PDF | HTML | 06 sep 2024 | |
| Application note | Retrofit UCC28750 EVM to Support Aux Power Application | PDF | HTML | 06 jun 2024 | |
| Technical article | Snubbing the flyback converter | PDF | HTML | 26 feb 2024 | |
| Technical article | Adding a single capacitor to improve cross-regulation in dual-output flyback power supplies | PDF | HTML | 21 dic 2023 | |
| Certificate | UCC28750EVM-071 EU Declaration of Conformity (DoC) | 20 nov 2023 |
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.
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
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SIMPLIS model of the current-mode controller, UCC28750.
Bug fixes:
Excel calculator for UCC28750
Initial release of the UCC28750 Excel Calculator.