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

UCC28221

ACTIVO

Controlador PWM doble intercalado de 2 MHz con UVLO de 13 V/8 V y ciclo de trabajo máximo programabl

Detalles del producto

Vin (max) (V) 14.5 Operating temperature range (°C) -40 to 105 Control mode Current Topology Flyback, Forward Rating Catalog Features Adjustable switching frequency, Current limiting, High-voltage startup, Input line monitor, Multi-topology, Programmable max duty cycle, Programmable slope compensation, Soft start Duty cycle (max) (%) 90
Vin (max) (V) 14.5 Operating temperature range (°C) -40 to 105 Control mode Current Topology Flyback, Forward Rating Catalog Features Adjustable switching frequency, Current limiting, High-voltage startup, Input line monitor, Multi-topology, Programmable max duty cycle, Programmable slope compensation, Soft start Duty cycle (max) (%) 90
SOIC (D) 16 59.4 mm² 9.9 x 6 TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • 2-MHz High-Frequency Oscillator With 1-MHz Operation Per Channel
  • Matched Internal Slope Compensation Circuits
  • Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel
  • Peak Current Mode Control With Cycle-by-Cycle Current Limit
  • Current Sense Discharge Transistor for Improved Noise Immunity
  • Accurate Line Undervoltage and Overvoltage Sense With Programmable Hysteresis
  • Opto-Coupler Interface
  • 110-V Internal Start-Up JFET (UCC28221)
  • Operates From 12-V Supply (UCC28220)
  • Programmable Soft Start
  • 2-MHz High-Frequency Oscillator With 1-MHz Operation Per Channel
  • Matched Internal Slope Compensation Circuits
  • Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel
  • Peak Current Mode Control With Cycle-by-Cycle Current Limit
  • Current Sense Discharge Transistor for Improved Noise Immunity
  • Accurate Line Undervoltage and Overvoltage Sense With Programmable Hysteresis
  • Opto-Coupler Interface
  • 110-V Internal Start-Up JFET (UCC28221)
  • Operates From 12-V Supply (UCC28220)
  • Programmable Soft Start

The UCC28220 and UCC28221 are a family of BiCMOS interleaved dual channel PWM controllers. Peak current mode control is used to ensure current sharing between the two channels. A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel.

The UCC28220 has an UVLO turnon threshold of
10 V for use in 12-V supplies while UCC28221 has a turnon threshold of 13 V for systems needing wider UVLO hysteresis. Both have 8-V turnoff thresholds.

Additional features include a programmable internal slope compensation with a special circuit which is used to ensure exactly the same slope is added to each channel and a high-voltage 110-V internal JFET for easier start-up for the wider hysteresis UCC28221 version.

The UCC28220 is available in both 16-pin SOIC and low-profile TSSOP packages. The UCC28221 also comes in 16-pin SOIC package and a slightly larger 20-pin TSSOP package to allow for high-voltage pin spacing to meet UL1950 creepage clearance safety requirements.

The UCC28220 and UCC28221 are a family of BiCMOS interleaved dual channel PWM controllers. Peak current mode control is used to ensure current sharing between the two channels. A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel.

The UCC28220 has an UVLO turnon threshold of
10 V for use in 12-V supplies while UCC28221 has a turnon threshold of 13 V for systems needing wider UVLO hysteresis. Both have 8-V turnoff thresholds.

Additional features include a programmable internal slope compensation with a special circuit which is used to ensure exactly the same slope is added to each channel and a high-voltage 110-V internal JFET for easier start-up for the wider hysteresis UCC28221 version.

The UCC28220 is available in both 16-pin SOIC and low-profile TSSOP packages. The UCC28221 also comes in 16-pin SOIC package and a slightly larger 20-pin TSSOP package to allow for high-voltage pin spacing to meet UL1950 creepage clearance safety requirements.

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Documentación técnica

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Tipo Título Fecha
* Data sheet UCC2822x Interleaved Dual PWM Controller With Programmable Max Duty Cycle datasheet (Rev. G) PDF | HTML 06 abr 2017
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note 200-W Interleaved Forward Converter Design Review Using TI's UCC28221 PWM Contro 19 abr 2004
More literature Seminar 300 Topic 8 - Switching Power Supply Design Review 15 feb 2001
More literature Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors 15 feb 2001

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.

Herramienta de cálculo

SLUC046 UCC28221 Application Design Tool

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
UCC28221 Controlador PWM doble intercalado de 2 MHz con UVLO de 13 V/8 V y ciclo de trabajo máximo programabl
Software
Herramienta de cálculo
UCC28221-CALC Utilidad de cálculo MathCAD UCC28221
Herramienta de cálculo

UCC28221-CALC — Utilidad de cálculo MathCAD UCC28221

This Mathcad design tool was developed to use with the UCC28221 application note SLUA312.
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOIC (D) 16 Ultra Librarian
TSSOP (PW) 20 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

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

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

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