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

TPS54225

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采用 HTSSOP 封装的 4.5V 至 18V 输入、2A 同步降压转换器

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TPS562211 正在供货 采用 SOT583 封装且具有 1% 精度、PG/SS 和 PFM/强制 PWM 的 4.2V 至 18V、2A 同步降压转换器 This product has improved performance, selectable power good or soft start feature

TPS54225

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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, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 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, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VCC Input Voltage Range: 4.5 V to 18 V
  • Wide VIN Input Voltage Range: 2 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    – 160 mΩ (High Side) and 110 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Power Good Output
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc™ Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

D-CAP2, PowerPAD are trademarks of Texas Instruments. Blu-ray Disc is a trademark of Blu-ray Disc Association.
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VCC Input Voltage Range: 4.5 V to 18 V
  • Wide VIN Input Voltage Range: 2 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    – 160 mΩ (High Side) and 110 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Power Good Output
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc™ Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

D-CAP2, PowerPAD are trademarks of Texas Instruments. Blu-ray Disc is a trademark of Blu-ray Disc Association.

The TPS54225 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54225 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54225 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components.

The TPS54225 also has a proprietary circuit that enables the device to adapt 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 VCC input , and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54225 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.

The TPS54225 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54225 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54225 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components.

The TPS54225 also has a proprietary circuit that enables the device to adapt 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 VCC input , and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54225 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.
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全新 TPS562242 正在供货 采用 SOT563 封装的 3V 至 17V 输入电压、2A、1.4MHz 同步降压转换器 This product has Eco-mode™ operation, 1.2MHz switching frequency, and smaller package

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 4.5V to 18V Input, 2-A Synchronous Step-Down SWIFT(TM) Converter 数据表 (Rev. C) 2011年 2月 14日
用户指南 TPS54225 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 27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
设计指南 适用于 Xilinx FPGA 的模拟器件 解决方案指南 2012年 4月 24日
应用手册 Understanding Thermal Dissipation and Design of a Heatsink 2011年 5月 4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

TPS54225EVM-538 — 同步降压 DCAP2 模式转换器评估模块

TPS54225EVM-538 评估模块是单相同步降压转换器，它在 2A 的电流下从 5V 至 17V 输入中产生 1.05V 电压。用户指南介绍了 TPS54225EVM-538 的性能。TPS54225 是一款单相、自适应接通时间 D-CAP2™ 模式同步降压转换器，它需要很少的外部组件。D-CAP2™ 控制电路针对低 ESR 输出电容器（例如 POSCAP、SP-CAP 或陶瓷电容器）进行了优化，并且具有快速瞬态响应，无需外部补偿。开关频率被内部设置为 700kHz 的额定频率。TPS54225 封装内部采用了高端和低端开关 MOSFET 以及栅极驱动器电路。MOSFET (...)
用户指南: PDF | HTML
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仿真模型

TPS54225 TINA-TI Transient Reference Design

SLIM283.TSC (187 KB) - TINA-TI Reference Design
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仿真模型

TPS54225 TINA-TI Transient Spice Model

SLIM284.ZIP (40 KB) - TINA-TI Spice Model
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仿真模型

TPS54225 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM282A.ZIP (41 KB) - PSpice Model
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参考设计

TIDA-010011 — 适用于保护继电器处理器模块的高效电源架构参考设计

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
原理图: PDF
参考设计

PMP6776 — Xilinx Kintex 7 Low Cost reference design

PMP6776 是低成本非隔离型同步降压电源。此设计使用 TPS56121 和 TPS54620 同步降压转换器以及 TPS54425 和 TPS54225 降压开关产生 7 个输出。其功能包括：输入电压范围为 10.8V 至 13.2V，输出为 6A 下 1V、4A 下 1.5V、6A 下 1.8V、2A 下 2V、8A 下 2.5V、8A 下 3.3V、4A 下 1.2V。
测试报告: PDF
原理图: PDF
封装 引脚 下载
HTSSOP (PWP) 14 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

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