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AC/DC & DC/DC converters (integrated FET)

TPS54228

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具有 Eco-mode™ 的 4.5V 至 18V 输入，2A 同步降压转换器

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数据表

TPS54228

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产品详情

Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 18 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
Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 18 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
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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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS54228 4.5-V to 18-V Input, 2-A Synchronous Step-Down Converter With Eco-Mode™ 数据表 (Rev. E) PDF | HTML 2016年 8月 31日
用户指南 TPS54228 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 27日
技术文章 Tips for making your embedded system’s power rail design smaller PDF | HTML 2019年 9月 23日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
应用手册 TPS54X28 应用指导 2015年 9月 2日
应用手册 基于带有纹波注入谷底检测定导通时间频域分析的D-CAP2™频率响应模型 英语版 2015年 9月 2日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

TPS54228EVM-686 — 用于具有轻载效率的 TPS54228 同步降压转换器的评估模块

TPS54228EVM-686 是一块完全组装且经过测试的电路板，用于评估具有轻载效率的 TPS54228 同步降压转换器。TPS54228EVM-686 由 4.5V 至 18V 输入电压供电，在电流为 2A 时提供 1.05V 的输出电压。
用户指南: PDF | HTML
TI.com 上无现货
仿真模型

TPS54228 TINA-TI Transient Reference Design

SLVM418.TSC (654 KB) - TINA-TI Reference Design
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仿真模型

TPS54228 TINA-TI Transient Spice Model

SLVM417.ZIP (41 KB) - TINA-TI Spice Model
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仿真模型

TPS54228 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM193A.ZIP (43 KB) - PSpice Model
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参考设计

PMP4472 — 交流输入、5V/3.3V2A 输出级联电源参考设计

PMP4472 是一款电源参考设计，具有高交流输入、5V 输出和
3.3V@2A 的直流隔离输出。它采用了提供 5V 总线电压的高效控制器 UCC28740 和降压转换器 TPS54228。该设计实现了良好的线路和负载调节以及良好的动态响应和低输出纹波电压。
测试报告: PDF
原理图: PDF
封装 引脚 下载
HSOIC (DDA) 8 查看选项
SOIC (D) 8 查看选项
VSON (DRC) 10 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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