UCC2891

ACTIVO

Controlador PWM con modo de corriente de pinza activa de 110 V y FET de pinza de canal P y umbral CS

Haga su pedido ahora

Hoja de datos

document-pdfAcrobat UCC289x Current Mode Active Clamp PWM Controller datasheet (Rev. F) (Inglés)

UCC2891

ACTIVO

Hoja de datos

Haga su pedido ahora

Detalles del producto

Topology

Active-clamp forward, Flyback, Forward

Control mode

Current

Features

High-voltage startup, Input line monitor, Multi-topology, Programmable slope compensation, Soft start, Soft switching, Supports NFET clamp

Duty cycle (max) (%)

100

Topology

Active-clamp forward, Flyback, Forward

Control mode

Current

Features

High-voltage startup, Input line monitor, Multi-topology, Programmable slope compensation, Soft start, Soft switching, Supports NFET clamp

Duty cycle (max) (%)

100

TSSOP (PW)

16

32 mm² (5 mm × 6.4 mm)

SOIC (D)

16

59.4 mm² (9.9 mm × 6 mm)

Low Output Jitter
Soft-Stop Shutdown of MAIN and AUX
Ideal for Active Clamp/Reset Forward, Flyback Converters
Provides Complementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches
Peak Current-Mode Control with Cycle-by-Cycle Current Limiting
110-V Input Startup Regulator on UCC2891/3
TrueDrive™ 2-A Sink, 2-A Source Outputs
Accurate Line UV and Line OV Threshold
Programmable Slope Compensation
1.0-MHz Synchronizable Oscillator
Precise Programmable Maximum Duty Cycle
Programmable Soft Start
APPLICATIONS
- 150-W to 700-W SMPS
- High-Efficiency, Low EMI/RFI Off-Line or DC/DC Converters
- Server, 48-V Telecom, Datacom
- High Power Adapter, LCD-TV and PDP-TV

Low Output Jitter
Soft-Stop Shutdown of MAIN and AUX
Ideal for Active Clamp/Reset Forward, Flyback Converters
Provides Complementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches
Peak Current-Mode Control with Cycle-by-Cycle Current Limiting
110-V Input Startup Regulator on UCC2891/3
TrueDrive™ 2-A Sink, 2-A Source Outputs
Accurate Line UV and Line OV Threshold
Programmable Slope Compensation
1.0-MHz Synchronizable Oscillator
Precise Programmable Maximum Duty Cycle
Programmable Soft Start
APPLICATIONS
- 150-W to 700-W SMPS
- High-Efficiency, Low EMI/RFI Off-Line or DC/DC Converters
- Server, 48-V Telecom, Datacom
- High Power Adapter, LCD-TV and PDP-TV

The UCC2891/2/3/4 family of PWM controllers is designed to simplify implementation of the various active clamp/reset switching power topologies.

The UCC289x is a peak current-mode, fixedfrequency, high-performance pulse width modulator. It includes the logic and the drive capability for the auxiliary switch with a simple method of programming the critical delays for proper active clamp operation.

The UCC2891/3 includes a 110-V start-up regulator for initial start-up and to provide keep-alive power during stand-by.

Additional features include an internal programmable slope compensation circuit, precise D_MAX limit, and a single resistor programmable synchronizable oscillator. An accurate line monitoring function also programs the converter\x92s ON and OFF transitions with regard to the bulk input voltage. Along with the UCC2897, this UCC289x family allows the power supply designer to eliminate many of the external components, reducing the size and complexity of the design.

The UCC2891/2/3/4 family of PWM controllers is designed to simplify implementation of the various active clamp/reset switching power topologies.

The UCC289x is a peak current-mode, fixedfrequency, high-performance pulse width modulator. It includes the logic and the drive capability for the auxiliary switch with a simple method of programming the critical delays for proper active clamp operation.

The UCC2891/3 includes a 110-V start-up regulator for initial start-up and to provide keep-alive power during stand-by.

Additional features include an internal programmable slope compensation circuit, precise D_MAX limit, and a single resistor programmable synchronizable oscillator. An accurate line monitoring function also programs the converter\x92s ON and OFF transitions with regard to the bulk input voltage. Along with the UCC2897, this UCC289x family allows the power supply designer to eliminate many of the external components, reducing the size and complexity of the design.

filter

Buscar otro/a Controladores de CA/CC

Descargar Ver vídeo con transcripción Video

Productos similares que pueden interesarle

open-in-new

Comparar alternativas

Funcionalidad similar a la del dispositivo comparado

UCC2897A

ACTIVO

Controlador PWM de 110 V con modo de corriente de pinza activa y protección FET de pinza de canal P Supports active clamp topology

Documentación técnica

No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.

Ver todo 12

Documentación principal	Tipo	Título	Fecha
*	Hoja de datos	UCC289x Current Mode Active Clamp PWM Controller datasheet (Rev. F)	1/07/2009
	Nota sobre la aplicación	Understanding and Designing an Active Clamp Current Mode Controlled Converter (Rev. A)	27/01/2020
	Guía de selección	Power Management Guide 2018 (Rev. R)	25/06/2018
	Analog Design Journal	Design of a 60-A interleaved active-clamp forward converter	22/01/2013
	Analog Design Journal	1Q 2013Issue Analog Applications Journal	22/01/2013
	Guía del usuario	48-V to 3.3-V Forward Converter w/Active Clamp Reset Using the UCC2891 Active Cl (Rev. A)	13/04/2012
	Nota sobre la aplicación	Method of Providing Hiccup Operation for UCC2897AEVM	27/08/2009
	Guía del usuario	48-V to 3.3-V Forward Converter w/Active Clamp Reset (Rev. A)	12/12/2006
	Nota sobre la aplicación	Active Clamp Transformer Reset: High Side or Low Side?	17/09/2004
	Nota sobre la aplicación	UCC2891 Active Clamp	22/12/2003
	Más documentación	Seminar 1100 Topic 3 - Design Considerations for Active Clamp and Reset	15/02/2001
	Más documentación	Seminar 1000 Topic 3 - Active Clamp and Reset Technique	15/02/2001

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.

Placa de evaluación

UCC2891EVM-520 — Módulo de evaluación UCC2891 para controlador PWM de pinza activa con modo de corriente

El módulo de evaluación (EVM) UCC2891EVM es un convertidor directo que proporciona una salida regulada de 3.3 V con una corriente de carga de 30 A, y funciona con una entrada de 48 V. El EVM funciona en todo el rango de entrada de telecomunicaciones de 36 V a 75 V y es capaz de regular (...)

Productos y hardware compatibles

En inventario

Límite:

Inicie sesión para hacer un pedido

lock

Iniciar sesión para ver el inventario

??asset.out-of-stock-ti_es_MX??

No disponible

Modelo de simulación