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TPS56428

ACTIVO

Convertidor reductor síncrono de entrada de 4.5 V a 18 V y 4 A con Eco-Mode™ avanzado

Se encuentra disponible una versión más nueva de este producto

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Funcionalidad similar a la del dispositivo comparado
TPS564242 ACTIVO Convertidor buck sincrónico en modo ECO de 4 A con tensión de entrada de 3 V a 16 V en encapsulado S Upgraded with higher efficiency, higher switching frequency, and smaller package

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 4 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Enable, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Switching frequency (min) (kHz) 650 Switching frequency (max) (kHz) 650 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 250 Duty cycle (max) (%) 65 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 4 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.6 Features Enable, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Switching frequency (min) (kHz) 650 Switching frequency (max) (kHz) 650 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 250 Duty cycle (max) (%) 65 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 VQFN (RHL) 14 12.25 mm² 3.5 x 3.5
  • D-CAP2™ Mode at 650kHz Switching for Fast
    Transient Response, Ceramic Capacitor Support
  • VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.6 V to 7.0 V
  • Advanced Eco-mode for High Light Load
    Efficiency
  • Integrated FETs Optimized for Lower Duty Cycle
    – 68 mΩ (High Side) and 37 mΩ (Low Side)
  • Shutdown Current Less Than 10 µA
  • 1% Initial Reference Voltage Accuracy
  • Soft Start with Pre-Bias Output Support
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • Fixed Soft Start : 1.0ms
  • D-CAP2™ Mode at 650kHz Switching for Fast
    Transient Response, Ceramic Capacitor Support
  • VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.6 V to 7.0 V
  • Advanced Eco-mode for High Light Load
    Efficiency
  • Integrated FETs Optimized for Lower Duty Cycle
    – 68 mΩ (High Side) and 37 mΩ (Low Side)
  • Shutdown Current Less Than 10 µA
  • 1% Initial Reference Voltage Accuracy
  • Soft Start with Pre-Bias Output Support
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • Fixed Soft Start : 1.0ms

The TPS56428 is a D-CAP2 mode synchronous buck converter which is optimized for various power bus regulation needs with a cost effective, low component count, low standby current solution.

The D-CAP2 mode control provides a fast transient response with no external compensation components. This adaptive on-time control supports seamless transition between PWM mode at higher load conditions and advanced Eco-mode operation at light loads. Advanced Eco-mode™ maintains higher efficiency during lighter load conditions than traditional skip mode.

The TPS56428 also has a proprietary circuit to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18 V VIN input and its output voltage can be programmed between 0.6V and 7.0V. The device also features a fixed 1-ms soft start and a power-good output.

The TPS56428 is available in 8-pin SOIC-8 and 14-pin QFN packages designed to operate over the ambient temperature range of –40°C to 85°C.

The TPS56428 is a D-CAP2 mode synchronous buck converter which is optimized for various power bus regulation needs with a cost effective, low component count, low standby current solution.

The D-CAP2 mode control provides a fast transient response with no external compensation components. This adaptive on-time control supports seamless transition between PWM mode at higher load conditions and advanced Eco-mode operation at light loads. Advanced Eco-mode™ maintains higher efficiency during lighter load conditions than traditional skip mode.

The TPS56428 also has a proprietary circuit to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18 V VIN input and its output voltage can be programmed between 0.6V and 7.0V. The device also features a fixed 1-ms soft start and a power-good output.

The TPS56428 is available in 8-pin SOIC-8 and 14-pin QFN packages designed to operate over the ambient temperature range of –40°C to 85°C.

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Pin por pin con la misma funcionalidad que el dispositivo comparado
TPS56528 ACTIVO Convertidor reductor síncrono de entrada de 4.5 V a 18 V y 5 A con Eco-Mode™ avanzado This product offers higher current (5 A).

Documentación técnica

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Tipo Título Fecha
* Data sheet TPS56428 4.5-V to 18-V Input, 4-A Sync. Step-Down Converter with Advanced Eco-mode™ datasheet (Rev. B) PDF | HTML 22 ene 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

TPS56428EVM-534 — Módulo de evaluación TPS56428 de convertidor CC/CC reductor

The Texas Instruments TPS56428EVM-534 evaluation module (EVM) helps designers evaluate the performance of the TPS56428 4.5V to 18V Input, 4A Synchronous Step-Down Converter with Eco-Mode.
Guía del usuario: PDF | HTML
Modelo de simulación

TPS56428 PSpice Transient Model

SLVM854.ZIP (69 KB) - PSpice Model
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HSOIC (DDA) 8 Ultra Librarian
VQFN (RHL) 14 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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