Inicio Gestión de la energía AC/DC & DC/DC converters (integrated FET)
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Gestión de la energía
AC/DC & DC/DC converters (integrated FET)

TPS54228

ACTIVO

Convertidor reductor síncrono de 2 A, entrada de 4.5 V a 18 V, con Eco-Mode™

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TPS54228

ACTIVO
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Detalles del producto

Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0008
Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0008
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 SOIC (D) 8 29.4 mm² 4.9 x 6 VSON (DRC) 10 9 mm² 3 x 3
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 155 mΩ (High-Side) and 108 mΩ (Low-Side)
  • High Efficiency, Less than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Prebiased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-by-Cycle Overcurrent Limit
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 155 mΩ (High-Side) and 108 mΩ (Low-Side)
  • High Efficiency, Less than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Prebiased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-by-Cycle Overcurrent Limit
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load

The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 also has a proprietary circuit that enables the device 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. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.

The TPS54228 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54228 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54228 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-Mode™ operation at light loads. Eco-Mode™ allows the TPS54228 to maintain high efficiency during lighter load conditions. The TPS54228 also has a proprietary circuit that enables the device 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. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54228 is available in 8-pin SO , 8-pin SOIC, and 10-pin VSON packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.
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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS54228 4.5-V to 18-V Input, 2-A Synchronous Step-Down Converter With Eco-Mode™ datasheet (Rev. E) PDF | HTML 31 ago 2016
User guide TPS54228 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 27 oct 2021
Technical article Tips for making your embedded system’s power rail design smaller PDF | HTML 23 sep 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- 02 ene 2013

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

TPS54228EVM-686 — Módulo de evaluación para convertidor reductor síncrono TPS54228 con eficiencia de carga ligera

The TPS54228EVM-686 is a fully assembled and tested circuit for evaluating the TPS54228 synchronous step-down converter with light load efficiency. The TPS54228EVM-686 operates from a 4.5V to 18V input and provides a 1.05V output at 2A.
Guía del usuario: PDF | HTML
No disponible en TI.com
Modelo de simulación

TPS54228 TINA-TI Transient Reference Design

SLVM418.TSC (654 KB) - TINA-TI Reference Design
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Modelo de simulación

TPS54228 TINA-TI Transient Spice Model

SLVM417.ZIP (41 KB) - TINA-TI Spice Model
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Modelo de simulación

TPS54228 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM193A.ZIP (43 KB) - PSpice Model
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Diseños de referencia

PMP4472 — Diseño de referencia de fuente de alimentación en cascada de 5 V/3.3 V y 2A con entrada CA

The PMP4472 is a power reference design with a high AC input, 5Vout, followed by a DC isolated
output of 3.3V at 2A. It implements a high efficiency controller UCC28740 to provide 5V bus voltage and a step-Down Converter TPS54228.The design achieves good line and load regulation as well as  (...)
Test report: PDF
Esquema: PDF
Paquete Pasadores Descargar
HSOIC (DDA) 8 Ver opciones
SOIC (D) 8 Ver opciones
VSON (DRC) 10 Ver opciones
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

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

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