UCC28740-Q1
Controlador de retorno en espera ultrabaja con inicio HV integrado y retroalimentación de optoacopla
UCC28740-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: -40.C to +125.C
- Device HBM classification level 2: ±2 kV
- Device CDM classification level C4B: ±750 V
- Funcitonal Safety-Capable
- Documentation available to aid functional safety system design
- Less than 10-mW no-load power capability
- Enables ±1% voltage regulation and ±5% current regulation across line and load
- 700-V startup switch
- 100-kHz maximum switching frequency enables high-power-density charger designs
- Resonant-ring valley-switching operation for highest overall efficiency
- Frequency dithering to ease EMI compliance
- Clamped gate-drive output for MOSFET
- Overvoltage, low-line, and over current protection functions
- Create a custom design using the UCC28740-Q1 with the WEBENCH Power Designer
The UCC28740-Q1 isolated-flyback power-supply controller regulates the output using an optical coupler to provide fast transient response to large-load steps.
An internal 700-V startup switch, dynamically controlled operating states, and a tailored modulation profile support ultra-low standby power without sacrificing startup time or output transient response.
Control algorithms in the UCC28740-Q1 allow operating efficiencies to meet or exceed applicable standards. The drive output 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 controller has a maximum switching frequency of 100 kHz and always maintains control of the peak-primary current in the transformer. Protection features keep primary and secondary component stresses in check. A minimum switching frequency of 170 Hz facilitates the achievement of less than 10-mW no-load power.
Documentación técnica
Tipo | Título | Fecha | ||
---|---|---|---|---|
* | Data sheet | UCC28740-Q1 Ultra Low Standby, Flyback Controller for Automotive, with Integrated HV Startup and Optocoupler Feedback datasheet (Rev. C) | PDF | HTML | 08 dic 2020 |
White paper | Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters | PDF | HTML | 11 oct 2023 | |
Application brief | Designing a Robust Traction Inverter Redundant Power Supply From 800 V Battery (Rev. C) | PDF | HTML | 16 feb 2023 | |
Functional safety information | UCC28740-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 11 nov 2020 | |
Application note | Minimize Standby Consumption for UCC287XX Family | 01 ago 2019 | ||
Analog Design Journal | Agency requirements for stand-by power consumption w/ offline and PoL converters | 26 ene 2016 |
Diseño y desarrollo
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.
UCC28740EVM-525 — Módulo de evaluación UCC28740EVM-525
The UCC28740EVM-525 evaluation module is a 10W off-line discontinuous mode (DCM) flyback converter that provides constant-voltage (CV) and constant-current (CC) output regulation. It uses optical coupler feedback for tight voltage regulation and improved the transient response to large load steps (...)
UCC28740 SIMPLIS Transient Model (Rev. A)
PMP41009 — Diseño de referencia de fuente de alimentación aislada de retorno de 350 V a 1000 V CC de entrada, 5
Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
---|---|---|
SOIC (D) | 7 | Ultra Librarian |
Pedidos y calidad
- RoHS
- REACH
- Marcado del dispositivo
- Acabado de plomo/material de la bola
- Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
- Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
- Contenido del material
- Resumen de calificaciones
- Monitoreo continuo de confiabilidad
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
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