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AC/DC 和 DC/DC 转换器（集成 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

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 18 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 Iq (typ) (µA) 800 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 4.5 Vin (max) (V) 18 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 Iq (typ) (µA) 800 Duty cycle (max) (%) 90
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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