Inicio Gestión de la energía AC/DC & DC/DC controllers (external FET)

UCC28730

ACTIVO

Controlador de retorno PSR en espera cero con CVCC y monitoreo de activación

Detalles del producto

Vin (min) (V) 27 Vin (max) (V) 450, 700 Iout (max) (A) 6 Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 48 Iq (typ) (A) 0.002
Vin (min) (V) 27 Vin (max) (V) 450, 700 Iout (max) (A) 6 Operating temperature range (°C) -40 to 125 Control mode Primary-side regulation Topology Buck, Flyback Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 48 Iq (typ) (A) 0.002
SOIC (D) 7 29.4 mm² 4.9 x 6
  • Enables Zero-Power (<5 mW) standby consumption
  • Smart Wake-Up detection enables smallest output capacitance
  • Primary-side regulation (PSR) eliminates optocoupler
  • ±5% voltage regulation and current regulation across line and load
  • 700-V start-up switch
  • 83-kHz maximum switching frequency enables low stand-by power charger designs
  • Resonant-ring valley-switching operation for highest overall efficiency
  • Frequency-dither to ease EMI compliance
  • Clamped gate-drive output for MOSFET
  • Overvoltage, low-line, and overcurrent protection functions
  • Programmable cable compensation
  • SOIC-7 package
  • Enables Zero-Power (<5 mW) standby consumption
  • Smart Wake-Up detection enables smallest output capacitance
  • Primary-side regulation (PSR) eliminates optocoupler
  • ±5% voltage regulation and current regulation across line and load
  • 700-V start-up switch
  • 83-kHz maximum switching frequency enables low stand-by power charger designs
  • Resonant-ring valley-switching operation for highest overall efficiency
  • Frequency-dither to ease EMI compliance
  • Clamped gate-drive output for MOSFET
  • Overvoltage, low-line, and overcurrent protection functions
  • Programmable cable compensation
  • SOIC-7 package

The UCC28730 isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler, and wake-up signal detection to improve transient response to large load steps. A minimum switching frequency of 30 Hz facilitates achieving less than 5 mW of no-load power. This device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current. The wake-up monitoring works with a secondary-side alarm device such as the UCC24650 to deliver rapid response to heavy load steps using minimal output capacitance.

An internal 700-V start-up switch, dynamically- controlled operating states and a tailored modulation profile support ultra-low stand-by power without sacrificing start-up time or output transient response. Control algorithms in the UCC28730 allow operating efficiencies to meet or exceed applicable standards. Discontinuous conduction mode (DCM) operation with valley-switching reduces switching losses. Modulation of the switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

The UCC28730 isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler, and wake-up signal detection to improve transient response to large load steps. A minimum switching frequency of 30 Hz facilitates achieving less than 5 mW of no-load power. This device processes information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current. The wake-up monitoring works with a secondary-side alarm device such as the UCC24650 to deliver rapid response to heavy load steps using minimal output capacitance.

An internal 700-V start-up switch, dynamically- controlled operating states and a tailored modulation profile support ultra-low stand-by power without sacrificing start-up time or output transient response. Control algorithms in the UCC28730 allow operating efficiencies to meet or exceed applicable standards. Discontinuous conduction mode (DCM) operation with valley-switching reduces switching losses. Modulation of the switching frequency and primary current peak amplitude (FM and AM) keeps the conversion efficiency high across the entire load and line ranges.

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Documentación técnica

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* Data sheet UCC28730 Zero-Power Standby PSR Flyback Controller With CVCC and Wake-Up Monitoring datasheet (Rev. A) PDF | HTML 30 may 2017
Application brief Flyback Selection Guide PDF | HTML 23 jun 2022
Application note Flyback Aux Winding OVP and UVLO Fault Sensing Design and Troubleshooting Tips PDF | HTML 31 ago 2021
More literature Achieving High Power Density and Ultra Low Standby Power in Flyback Converters 23 mar 2021
Application note Minimize Standby Consumption for UCC287XX Family 01 ago 2019
Technical article Get smarter about ‘zero’ standby power in your next appliance design PDF | HTML 27 ago 2018
Application note Troubleshooting TI PSR controllers 03 oct 2016
Technical article Keeping up with the standards: Efficiency and standby power requirements PDF | HTML 12 may 2016
Technical article USB Wall Chargers: Conveniences and Challenges PDF | HTML 06 oct 2015
White paper Control Challenges for Low Power AC/DC Converters 02 oct 2015
White paper Control Challenges for Low Power AC/DC Converters (PPT) 02 oct 2015
EVM User's guide Using the UCC28730EVM-552 10-W Adaptor Module With PSR and Wake-Up Monitor 06 feb 2015

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

UCC28730EVM-552 — Controlador de retorno de lado primario UCC28730 con activación de lado secundario UCC24650

El módulo de evaluación UCC28730EVM-552 es un convertidor de retorno en modo discontinuo (DCM) fuera de línea de 10 W que proporciona regulación de salida de tensión constante (CV) y corriente constante (CC) sin el uso de un acoplador óptico.  El (...)

Guía del usuario: PDF
Modelo de simulación

UCC28730 & UCC24650 PSpice Transient Model

SLUM527.ZIP (103 KB) - PSpice Model
Herramienta de cálculo

SLUC579 UCC28730 Design Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
AC/DC & DC/DC controllers (external FET)
UCC28730 Controlador de retorno PSR en espera cero con CVCC y monitoreo de activación UCC28730-Q1 Controlador de retorno PSR de potencia en espera cero para automoción

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Paquete Pasadores Descargar
SOIC (D) 7 Ver opciones

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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