Inicio Gestión de la energía Controladores CA/CC y CC/CC (FET externo)

UCC28740-Q1

ACTIVO

Controlador de retorno en espera ultrabaja con inicio HV integrado y retroalimentación de optoacopla

Detalles del producto

Operating temperature range (°C) -40 to 125 Control mode Secondary-side regulation Topology Flyback Rating Automotive Features Automotive qualified, Current limiting, DCM, Error amplifier, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Quasi-Resonant, SSR, Secondary-side regulated, Soft start, Valley switching TI functional safety category Functional Safety-Capable
Operating temperature range (°C) -40 to 125 Control mode Secondary-side regulation Topology Flyback Rating Automotive Features Automotive qualified, Current limiting, DCM, Error amplifier, Green mode, High voltage startup, High-voltage startup, Input line monitor, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Quasi-Resonant, SSR, Secondary-side regulated, Soft start, Valley switching TI functional safety category Functional Safety-Capable
SOIC (D) 7 29.4 mm² 4.9 x 6
  • 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
  • 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
  • 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
  • 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.

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.

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Documentación técnica

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* 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.

Placa de evaluación

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 (...)

Guía del usuario: PDF
Modelo de simulación

UCC28740 SIMPLIS Transient Model (Rev. A)

SLUM672A.ZIP (122 KB) - SIMPLIS Model
Herramienta de cálculo

SLUC487 UCC28740 Design Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
UCC28740 Controlador de retorno de corriente y tensión constantes (CVCC) con regulación del lado secundari UCC28740-Q1 Controlador de retorno en espera ultrabaja con inicio HV integrado y retroalimentación de optoacopla
Diseños de referencia

PMP41009 — Diseño de referencia de fuente de alimentación aislada de retorno de 350 V a 1000 V CC de entrada, 5

Este diseño de referencia proporciona salidas aisladas de 14 V y 56 W con una topología de retorno cuasi resonante. La fuente de alimentación se puede alimentar desde una entrada de 350 V a 1000 V de CC. Este diseño utiliza MOSFET en cascada y el controlador de retorno UCC28740-Q1. La regulación (...)
Test report: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOIC (D) 7 Ultra Librarian

Pedidos y calidad

Información incluida:
  • 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
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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