Inicio Administración de potencia Controladores CA/CC y CC/CC (FET externo)

UCC24612

ACTIVO

Controlador rectificador síncrono multimodo de alta frecuencia

Detalles del producto

Rating Catalog Topology Active-clamp flyback, Active-clamp forward, CCM, DCM, Forward, Full bridge, Half bridge, LLC, Quasi resonant Control mode VDS sensing Features 1 MHz operation, 800 kHz operation, Adaptive Minimum Off-time, Automatic light load and sleep mode, High or low-side configurable, Operation up to 1Mhz, Proportional gate drive, Synchronous Rectifier, USB C/PD compatible Operating temperature range (°C) -40 to 125
Rating Catalog Topology Active-clamp flyback, Active-clamp forward, CCM, DCM, Forward, Full bridge, Half bridge, LLC, Quasi resonant Control mode VDS sensing Features 1 MHz operation, 800 kHz operation, Adaptive Minimum Off-time, Automatic light load and sleep mode, High or low-side configurable, Operation up to 1Mhz, Proportional gate drive, Synchronous Rectifier, USB C/PD compatible Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Supports Topologies such as Active Clamp Flyback, QR, DCM, CCM Flyback and LLC
  • MOSFET VDS Sensing up to 230 V
  • Operating Frequency Up to 1 MHz
    • 1 MHz for UCC24612-1
    • 800 kHz for UCC24612-2
  • Wide VDD Range Allows for Direct Bias from 5-V to 28-V Output Systems
  • 4-A Sink, 1-A Source Gate Driver with Proportional Gate Drive
  • Adaptive Minimum Off-time for Increased Noise Immunity
  • Cycle Limit Pre-Turn-off Improves Efficiency in CCM
  • High or Low-Side Configurable
  • Automatic Light-Load and Sleep-Mode Management with 320-µA standby current
  • 16-ns Typical Turnoff Propagation Delay
  • 9.5-V Gate Drive Clamp for Reduced Driving Loss
  • Supports Topologies such as Active Clamp Flyback, QR, DCM, CCM Flyback and LLC
  • MOSFET VDS Sensing up to 230 V
  • Operating Frequency Up to 1 MHz
    • 1 MHz for UCC24612-1
    • 800 kHz for UCC24612-2
  • Wide VDD Range Allows for Direct Bias from 5-V to 28-V Output Systems
  • 4-A Sink, 1-A Source Gate Driver with Proportional Gate Drive
  • Adaptive Minimum Off-time for Increased Noise Immunity
  • Cycle Limit Pre-Turn-off Improves Efficiency in CCM
  • High or Low-Side Configurable
  • Automatic Light-Load and Sleep-Mode Management with 320-µA standby current
  • 16-ns Typical Turnoff Propagation Delay
  • 9.5-V Gate Drive Clamp for Reduced Driving Loss

UCC24612 is a high performance synchronous rectifier controller and driver for standard and logic-level N-channel MOSFET power devices. By implementing a near-ideal diode emulation UCC24612 reduces losses of the output rectifier and indirectly the primary side losses. The drain to source (VDS) sensing control scheme allows UCC24612 to work with multiple topologies, such as Active Clamp Flyback, QR/DCM/CCM Flyback and LLC, et.

Integrated features simplify the design effort, enabling UCC24612 to excel in a variety of applications and frequencies. The wide operating VDD and VD voltage ranges enable simple implementation in systems with outputs up to 28 V. Efficiency and noise immunity is enhanced with adaptive minimum off-time. Variants UCC24612-1 and UCC24612-2 offer different minimum on-times to provide additional noise immunity. Robust operation in continuous conduction mode (CCM) is further enhanced with proportional gate-drive and CCM cycle limit pre-turn-off.

UCC24612 has multiple features that improve efficiency. The fast comparator with short propagation delays reduces switching loss. The 9.5-V gate drive clamp reduces MOSFET driving losses. Frequency dependent standby modes further decreases standby power. These features help UCC24612 be part of a greater system that meets stringent efficiency standards such as Department of Energy (DoE) Level VI and Code of Conduct (CoC) Tier 2.

UCC24612 is available in a SOT23-5 package.

UCC24612 is a high performance synchronous rectifier controller and driver for standard and logic-level N-channel MOSFET power devices. By implementing a near-ideal diode emulation UCC24612 reduces losses of the output rectifier and indirectly the primary side losses. The drain to source (VDS) sensing control scheme allows UCC24612 to work with multiple topologies, such as Active Clamp Flyback, QR/DCM/CCM Flyback and LLC, et.

Integrated features simplify the design effort, enabling UCC24612 to excel in a variety of applications and frequencies. The wide operating VDD and VD voltage ranges enable simple implementation in systems with outputs up to 28 V. Efficiency and noise immunity is enhanced with adaptive minimum off-time. Variants UCC24612-1 and UCC24612-2 offer different minimum on-times to provide additional noise immunity. Robust operation in continuous conduction mode (CCM) is further enhanced with proportional gate-drive and CCM cycle limit pre-turn-off.

UCC24612 has multiple features that improve efficiency. The fast comparator with short propagation delays reduces switching loss. The 9.5-V gate drive clamp reduces MOSFET driving losses. Frequency dependent standby modes further decreases standby power. These features help UCC24612 be part of a greater system that meets stringent efficiency standards such as Department of Energy (DoE) Level VI and Code of Conduct (CoC) Tier 2.

UCC24612 is available in a SOT23-5 package.

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Documentación técnica

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Tipo Título Fecha
* Data sheet UCC24612 High Frequency Synchronous Rectifier Controller datasheet (Rev. A) PDF | HTML 13 feb 2018
Technical article High-frequency resonant converter design considerations, Part 2 PDF | HTML 21 dic 2023
More literature PCB layout guidelines to optimize power supply performance 23 mar 2021
Technical article Gain ultra-high power density for 100-W USB Power Delivery adapters PDF | HTML 05 mar 2019
Technical article How topology selection can help improve reliability in industrial AC/DC power supp PDF | HTML 14 feb 2019
Technical article Intelligently control an active clamp flyback PDF | HTML 01 mar 2018
Application note UCC24610 and UCC24612 SR Range Extension Guide 18 dic 2017

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

UCC28780EVM-002 — EVM UCC28780 de CA/CC de retorno de 45 W y pinza activa con GaN FET

El UCC28780EVM-002 demuestra alta eficiencia y alta densidad para un adaptador fuera de línea de 45 W con el controlador de retorno de abrazadera activa UCC28780 a una alta frecuencia nominal de 300 kHz, empleando los ICs de potencia GaN MOSFET NV6115 y NV6117.  El módulo de evaluación (EVM) (...)

Guía del usuario: PDF
Placa de evaluación

UCC28780EVM-021 — EVM UCC28780 de convertidor de retorno de 45 W y pinza activa con UCC24612 y Si MOSFET

El UCC28780EVM-021 es un módulo de evaluación (EVM) de 45 W para evaluar un adaptador flyback de abrazadera activa fuera de línea para la carga de portátiles y otras aplicaciones. El módulo de evaluación cumple los requisitos de eficiencia de nivel 2 del CdC y de nivel 6 del DoE. Está destinado a (...)

Guía del usuario: PDF
Tarjeta secundaria

UCC24612-1EVM — Placa de demostración de sustitución de diodos para controlador rectificador síncrono de lado sec

El módulo de evaluación (EVM) UCC24612-1EVM se utiliza para convertir el rectificador de salida de un convertidor de retorno de un diodo a un rectificador sincrónico (SR) con transistor de efecto de campo (FET), con el fin de investigar y evaluar los beneficios en eficiencia al utilizar un SR en (...)
Guía del usuario: PDF
Modelo de simulación

UCC24612 SIMPLIS Model (Rev. A)

SLUM597A.ZIP (491 KB) - SIMPLIS Model

Muchos diseños de referencia de TI incluyen UCC24612

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-23 (DBV) 5 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

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