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UCC28881

ACTIVO

Conmutador fuera de línea de 700 V y corriente quiescente más baja

Detalles del producto

Iout (max) (A) 0.225 Vin (min) (V) 36 Vin (max) (V) 450 Topology Buck, Buck boost, Buck-Boost, Flyback Switching frequency (max) (kHz) 62 Features Current limiting, Green mode, High voltage startup, High-voltage startup, Integrated Switch, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Overtemperature protection, Soft start, Thermal shutdown Control mode Voltage Vout (min) (V) 5 Vout (max) (V) 60 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00001
Iout (max) (A) 0.225 Vin (min) (V) 36 Vin (max) (V) 450 Topology Buck, Buck boost, Buck-Boost, Flyback Switching frequency (max) (kHz) 62 Features Current limiting, Green mode, High voltage startup, High-voltage startup, Integrated Switch, Leading edge blanking, Light load efficiency, Light-load efficiency, Low power, Overcurrent protection, Overtemperature protection, Soft start, Thermal shutdown Control mode Voltage Vout (min) (V) 5 Vout (max) (V) 60 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00001
SOIC (D) 7 29.4 mm² 4.9 x 6
  • Integrated 14-Ω, 700-V Power MOSFET
  • Integrated High-Voltage Current Source for Internal Device Bias Power
  • Integrated Current Sense
  • Internal Soft Start
  • Self-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)
  • Supports Buck, Buck-Boost and Flyback Topologies
  • <100-μA Device Quiescent Current
  • Robust Current Protection During Load Short Circuit
  • Protection
    • Current Limit
    • Overload and Output Short Circuit
    • Over Temperature
  • Integrated 14-Ω, 700-V Power MOSFET
  • Integrated High-Voltage Current Source for Internal Device Bias Power
  • Integrated Current Sense
  • Internal Soft Start
  • Self-Biased Switcher (Start Up and Operation Directly from Rectified Mains Voltage)
  • Supports Buck, Buck-Boost and Flyback Topologies
  • <100-μA Device Quiescent Current
  • Robust Current Protection During Load Short Circuit
  • Protection
    • Current Limit
    • Overload and Output Short Circuit
    • Over Temperature

The UCC28881 integrates the controller and a 14-Ω, 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source, enabling start up and operation directly from the rectified mains voltage. UCC28881 is the same family device of UCC28880, with higher current handling capability.

The low quiescent current of the device enables excellent efficiency. With the UCC28881 the most common converter topologies, such as buck, buck-boost and flyback can be built using a minimum number of external components.

The UCC28881 incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.

The UCC28881 integrates the controller and a 14-Ω, 700-V power MOSFET into one monolithic device. The device also integrates a high-voltage current source, enabling start up and operation directly from the rectified mains voltage. UCC28881 is the same family device of UCC28880, with higher current handling capability.

The low quiescent current of the device enables excellent efficiency. With the UCC28881 the most common converter topologies, such as buck, buck-boost and flyback can be built using a minimum number of external components.

The UCC28881 incorporates a soft-start feature for controlled start up of the power stage which minimizes the stress on the power-stage components.

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Documentación técnica

star =Principal documentación para este producto seleccionada por TI
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Tipo Título Fecha
* Data sheet UCC28881 700-V, 225-mA Low Quiescent Current Off-Line Converter datasheet (Rev. B) PDF | HTML 11 ene 2016
Application note Operating UCC2888x Offline Buck in Saturation for Cost Reduction 22 jun 2018
Technical article How to build a cost-competitive and robust auxiliary power supply PDF | HTML 01 feb 2018
Application note UCC2888x Diode Selection When Configured as High Side Buck 20 nov 2017
Technical article Unique techniques to increase controller power PDF | HTML 23 ago 2017
Application note UCC28880, UCC28881 Audible Noise Reduction Techniques 23 mar 2017
Technical article Powering the IoT PDF | HTML 26 ene 2017
EVM User's guide Using the UCC28881EVM-680 (Rev. A) 08 dic 2015
Technical article Power Tips: Design considerations of high-voltage converters in a cascode MOSFET PDF | HTML 03 nov 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

UCC28881EVM-680 — Módulo de evaluación UCC28881 de convertidor reductor de lado alto fuera de línea

The UCC28881EVM-680 evaluation module (EVM) is an offline high-voltage buck-type power supply that provides 13 VDC at a maximum output of 225 mA. The input accepts a voltage range of 85 VAC to 265 VAC.

Guía del usuario: PDF
Modelo de simulación

UCC28881 PSpice Transient Model

SLUM501.ZIP (130 KB) - PSpice Model
Herramienta de cálculo

SLUC626 UCC28881 Design Calculator

Productos y hardware compatibles

Productos y hardware compatibles

Productos
AC/DC & DC/DC converters (integrated FET)
UCC28881 Conmutador fuera de línea de 700 V y corriente quiescente más baja

Muchos diseños de referencia de TI incluyen UCC28881

Utilice nuestra herramienta de selección de diseños de referencia para revisar e identificar los diseños que mejor se adaptan a su aplicación y parámetros.

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

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

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