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

UC1846

ACTIVO

Controlador PWM con modo de corriente

Detalles del producto

Vin (max) (V) 40 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Rating Military Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 50
Vin (max) (V) 40 Operating temperature range (°C) -55 to 125 Control mode Current Topology Boost, Flyback, Forward, Full bridge, Half bridge, Push pull Rating Military Features Error amplifier, Multi-topology, Soft start, Synchronization pin Duty cycle (max) (%) 50
CDIP (J) 16 135.3552 mm² 19.56 x 6.92 LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • Automatic Feedforward Compensation
  • Programmable Pulse-by-Pulse Current Limiting
  • Automatic Symmetry Correction in Push-Pull
    Configuration
  • Enhanced Load Response Characteristics
  • Parallel Operation Capability for Modular Power
    Systems
  • Differential Current Sense Amplifier with Wide
    Common Mode Range
  • Double-Pulse Suppression
  • 500-mA (Peak) Totem-pole Outputs
  • ±1% Band Gap Reference
  • Undervoltage Lockout
  • Soft-Start Capability
  • Shutdown Terminal
  • 500-kHz Operation
  • Automatic Feedforward Compensation
  • Programmable Pulse-by-Pulse Current Limiting
  • Automatic Symmetry Correction in Push-Pull
    Configuration
  • Enhanced Load Response Characteristics
  • Parallel Operation Capability for Modular Power
    Systems
  • Differential Current Sense Amplifier with Wide
    Common Mode Range
  • Double-Pulse Suppression
  • 500-mA (Peak) Totem-pole Outputs
  • ±1% Band Gap Reference
  • Undervoltage Lockout
  • Soft-Start Capability
  • Shutdown Terminal
  • 500-kHz Operation

The UC1846/7 family of control devices provides all of the necessary features to implement fixed-frequency, current-mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel while maintaining equal current sharing. \

Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off.

Other features include fully-latched operation, double-pulse suppression, deadline adjust capability, and a ±1% trimmed band gap reference.

The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.

The UC1846/7 family of control devices provides all of the necessary features to implement fixed-frequency, current-mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel while maintaining equal current sharing. \

Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off.

Other features include fully-latched operation, double-pulse suppression, deadline adjust capability, and a ±1% trimmed band gap reference.

The UC1846 features low outputs in the OFF state, while the UCx847 features high outputs in the OFF state.

Descargar Ver vídeo con transcripción Video

Productos similares que pueden interesarle

open-in-new Comparar alternativas
Funcionalidad similar a la del dispositivo comparado
UCC2808A-2EP ACTIVO PWM de inserción-extracción con modo de corriente de baja potencia de producto mejorado Enhanced product upgrade to BiCMOS

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 6
Tipo Título Fecha
* Data sheet UCx846/7 Current Mode PWM Controller datasheet (Rev. C) PDF | HTML 04 ene 2016
* SMD UC1846 SMD 5962-86806 21 jun 2016
Application note DN-45 UC3846, UC3856 and UCC3806 Push Pull PWM Current Mode Control ICs 05 sep 1999
Application note DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode 05 sep 1999
Application note Modeling, Analysis and Compensation of the Current-Mode Converter 05 sep 1999
Application note U-93 A New Integrated Circuit for Current Mode Control 05 sep 1999

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.

Modelo de simulación

UC1846 TINA-TI Transient Reference Design

SLUM213.TSC (829 KB) - TINA-TI Reference Design
Modelo de simulación

UC1846 TINA-TI Transient Spice Model

SLUM214.ZIP (14 KB) - TINA-TI Spice Model
Modelo de simulación

UCx846 Family PSpice Transient Model

SLUM099.ZIP (54 KB) - PSpice Model
Modelo de simulación

UCx846 Unencrypted PSpice Transient Model

SLUM632.ZIP (2 KB) - PSpice Model
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
CDIP (J) 16 Ultra Librarian
LCCC (FK) 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.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

Videos