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AC/DC 和 DC/DC 转换器（集成 FET）

TPS54325

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4.5V 至 18V 输入、3A 同步降压转换器

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TPS54325

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产品详情

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 3 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) 850 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 3 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) 850 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: 2.0 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 – 120 mΩ (High Side)
    and 70 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 Over Current Limit
  • Power Good Output
  • 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: 2.0 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 – 120 mΩ (High Side)
    and 70 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 Over Current Limit
  • Power Good Output

The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 device 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 TPS54325 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS54325 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 2.0-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 TPS54325 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.

The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 device 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 TPS54325 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS54325 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 2.0-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 TPS54325 is available in the 14 pin HTSSOP package, and designed to operate from –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 TPS54325 4.5-V to 18-V, 3-A Output Synchronous Step Down Switcher with Integrated FET 数据表 (Rev. F) PDF | HTML 2014年 11月 23日
模拟设计期刊 控制模式快速参考指南 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2023年 9月 5日
用户指南 TPS54325 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 11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
模拟设计期刊 Efficiency of synchronous versus nonsynchronous buck converters 2009年 10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

TPS54325EVM — 5V 至 17V 输入、3A 转换器评估模块

TPS54325EVM（评估模块）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。此 EVM 在 4.5V 至 18V 输入电压范围内运行，且可在最高 3A 的负载下提供 1.05V 的输出电压。TPS54325 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极快的瞬态响应。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

TPS54325 TINA-TI Reference Design

SLVM201.TSC (168 KB) - TINA-TI Reference Design
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仿真模型

TPS54325 TINA-TI Transient Spice Model

SLVM200.ZIP (40 KB) - TINA-TI Spice Model
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仿真模型

TPS54325 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM285A.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
封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 14 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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