主頁 電源管理 AC/DC 和 DC/DC 轉(zhuǎn)換器（集成 FET）

TPS54228

正在供貨

具有 Eco-Mode? 的 4.5V 至 18V 輸入，2A 同步降壓轉(zhuǎn)換器

產(chǎn)品詳情

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 7 Vout (min) (V) 0.76 Features Enable, Light-load efficiency, 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) (%) 65 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 7 Vout (min) (V) 0.76 Features Enable, Light-load efficiency, 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) (%) 65 Type Converter
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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類型 標(biāo)題 下載最新的英語版本 日期
* 數(shù)據(jù)表 TPS54228 4.5-V to 18-V Input, 2-A Synchronous Step-Down Converter With Eco-Mode? 數(shù)據(jù)表 (Rev. E) PDF | HTML 2016年 8月 31日
用戶指南 TPS54228 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 27日
技術(shù)文章 Tips for making your embedded system’s power rail design smaller PDF | HTML 2019年 9月 23日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
選擇指南 電源管理指南 2018 (Rev. R) 2018年 6月 25日
應(yīng)用手冊 TPS54X28 應(yīng)用指導(dǎo) 2015年 9月 2日
應(yīng)用手冊 基于帶有紋波注入谷底檢測定導(dǎo)通時間頻域分析的D-CAP2?頻率響應(yīng)模型 英語版 2015年 9月 2日

設(shè)計和開發(fā)

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評估板

TPS54228EVM-686 — 用于具有輕載效率的 TPS54228 同步降壓轉(zhuǎn)換器的評估模塊

TPS54228EVM-686 是一塊完全組裝且經(jīng)過測試的電路板，用于評估具有輕載效率的 TPS54228 同步降壓轉(zhuǎn)換器。TPS54228EVM-686 由 4.5V 至 18V 輸入電壓供電，在電流為 2A 時提供 1.05V 的輸出電壓。
用戶指南: PDF | HTML
TI.com 上無現(xiàn)貨
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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參考設(shè)計

PMP4472 — 交流輸入、5V/3.3V2A 輸出級聯(lián)電源參考設(shè)計

PMP4472 是一款電源參考設(shè)計，具有高交流輸入、5V 輸出和
3.3V@2A 的直流隔離輸出。它采用了提供 5V 總線電壓的高效控制器 UCC28740 和降壓轉(zhuǎn)換器 TPS54228。該設(shè)計實現(xiàn)了良好的線路和負(fù)載調(diào)節(jié)以及良好的動態(tài)響應(yīng)和低輸出紋波電壓。
測試報告: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
HSOIC (DDA) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
VSON (DRC) 10 Ultra Librarian

訂購和質(zhì)量

包含信息：
  • RoHS
  • REACH
  • 器件標(biāo)識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測
包含信息：
  • 制造廠地點
  • 封裝廠地點

推薦產(chǎn)品可能包含與 TI 此產(chǎn)品相關(guān)的參數(shù)、評估模塊或參考設(shè)計。

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