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AC/DC 和 DC/DC 转换器（集成 FET）

TPS54226

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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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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

TPS54226

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.76 Features Enable, Light Load Efficiency, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 800 Duty cycle (max) (%) 90 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.76 Features Enable, Light Load Efficiency, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 800 Duty cycle (max) (%) 90 Type Converter
HTSSOP (PWP) 14 32 mm² 5 x 6.4 VQFN (RGT) 16 9 mm² 3 x 3
  • 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
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • Auto-Skip Mode
  • 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)

Eco-Mode Is a trademark of Texas Instruments
PowerPAD Is a trademark of Texas Instruments
  • 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
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • Auto-Skip Mode
  • 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)

Eco-Mode Is a trademark of Texas Instruments
PowerPAD Is a trademark of Texas Instruments

The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 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 TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode operation at light load for high efficiency. The TPS54226 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 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 TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.

The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 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 TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode operation at light load for high efficiency. The TPS54226 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 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 TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.
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TPS54326 正在供货 具有 Eco-Mode™ 的 4.5V 至 18V 输入、3A 同步降压转换器 This product offers higher current (3 A).
功能与比较器件相似
TPS562203 正在供货 采用 SOT563 封装且具有 Eco-Mode 的 4.2V 至 17V 输入、2A 同步降压转换器 This product has a smaller package with less external component count
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 a smaller package with 1.2MHz switching frequency

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 Converter with Eco-Mode 数据表 (Rev. E) 2011年 7月 25日
用户指南 TPS54226 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 27日
选择指南 SWIFT DC/DC Converters Selector Guide (Rev. G) 2019年 2月 6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
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

TPS54226EVM-539 — TPS54226 降压 DCAP2 模式转换器评估模块

TPS54226EVM-539 是一款组装完备且经过测试的电路，用于评估 TPS54428 同步降压转换器。TPS54226EVM-539 在 4.5V 至 18V 输入电压范围内运行，且可在最高 2A 的电流下提供 1.05V 的输出电压。TPS54226 的主控制环路采用 D-CAP2™ 模式控制，无需在相位补偿中使用外部组件即可实现超快的瞬态响应。该解决方案还具有可调软启动特性且集成了电源正常指示功能，因此灵活性很高。

用户指南: PDF | HTML
TI.com 上无现货
仿真模型

TPS54226 TINA-TI Transient Reference Design

SLVM223.TSC (201 KB) - TINA-TI Reference Design
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仿真模型

TPS54226 TINA-TI Transient Spice Model

SLVM224.ZIP (40 KB) - TINA-TI Spice Model
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仿真模型

TPS54226 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM293A.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

该参考设计展示了各种电源架构，这些架构可为需要 >1A 负载电流和高效率的应用处理器模块生成多个电压轨。所需的电源通过来自背板的 5V、12V 或 24V 直流输入生成。电源通过带集成 FET 的直流/直流转换器生成并且使用带集成电感器的电源模块以减小尺寸。此设计采用 HotRod™ 封装类型，适用于需要低 EMI 的应用，也非常适合设计时间受限的应用。其他功能包括 DDR 端接稳压器、输入电源 OR-ing、电压时序控制、过载保护电子保险丝以及电压和负载电流监控。该设计可以用于处理器、数字信号处理器和现场可编程门阵列。该设计已依照 CISPR22 标准针对辐射发射进行了测试，符合 A (...)
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 14 Ultra Librarian
VQFN (RGT) 16 Ultra Librarian
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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