TPS54326

正在供貨

具有 Eco-Mode? 的 4.5V 至 18V 輸入、3A 同步降壓轉換器

可提供此產品的更新版本

open-in-new 比較替代產品
功能與比較器件相似
TPS563211 正在供貨 采用 SOT583 封裝且具有 1% 精度、PG/SS 和 PFM/強制 PWM 的 4.2V 至 18V、3A 同步降壓轉換器 This product has improved performance, selectable power good or soft start feature

產品詳情

Rating Catalog Topology Buck Iout (max) (A) 3 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) 850 Duty cycle (max) (%) 90 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 3 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) 850 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
    - 120 mΩ (High Side) and 70 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 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 Is a trademark of Texas InstrumentsPower
PAD Is a trademark of Texas InstrumentsPower
  • 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
    - 120 mΩ (High Side) and 70 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 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 Is a trademark of Texas InstrumentsPower
PAD Is a trademark of Texas InstrumentsPower

The TPS54326 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54326 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 TPS54326 uses the D-CAP2™ mode control which provides a fast transient response with no external 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 TPS54326 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 TPS54326 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.

The TPS54326 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54326 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 TPS54326 uses the D-CAP2™ mode control which provides a fast transient response with no external 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 TPS54326 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 TPS54326 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.
下載 觀看帶字幕的視頻 視頻

您可能感興趣的相似產品

open-in-new 比較替代產品
功能與比較器件相同，且具有相同引腳
TPS54226 正在供貨 具有 Eco-Mode? 的 4.5V 至 18V 輸入、2A 同步降壓轉換器 This product offers lower current (2A).
TPS54426 正在供貨 具有 Eco-Mode? 的 4.5V 至 18V 輸入、4A 同步降壓轉換器 This product offers higher current (4A).
功能與比較器件相似
TPS563203 正在供貨 采用 SOT563 封裝的 4.2V 至 17V 輸入、3A 同步降壓轉換器 This product has a smaller package with less external component count
TPS563252 正在供貨 采用 SOT563 封裝的 3V 至 17V 輸入電壓、3A、1.2Mhz 同步降壓轉換器 This product has a smaller package with 1.2MHz switching frequency

技術文檔

star =有關此產品的 TI 精選熱門文檔
未找到結果。請清除搜索并重試。
查看全部 6
類型 標題 下載最新的英語版本 日期
* 數據表 4.5V to 18V Input, 3-A Synchronous Step-Down Converter with Eco-mode 數據表 (Rev. E) 2012年 6月 6日
用戶指南 TPS54326 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 11日
選擇指南 SWIFT DC/DC Converters Selector Guide (Rev. G) 2019年 2月 6日
技術文章 Keeping DC/DC solutions (super) simple for cost-sensitive applications PDF | HTML 2016年 10月 18日
應用手冊 基于帶有紋波注入谷底檢測定導通時間頻域分析的D-CAP2?頻率響應模型 英語版 2015年 9月 2日
應用手冊 Understanding Thermal Dissipation and Design of a Heatsink 2011年 5月 4日

設計和開發

如需其他信息或資源，請點擊以下任一標題進入詳情頁面查看（如有）。

評估板

TPS54326EVM-540 — 4.5V 至 18V 輸入、3A 轉換器評估模塊

TPS54326 是一款單相、自適應接通時間 D-CAP2? 模式同步降壓轉換器，它需要很少的外部組件。D-CAP2? 控制電路針對低 ESR 輸出電容器（例如 POSCAP、SP-CAP 或陶瓷電容器）進行了優化，并且具有快速瞬態響應，無需外部補償。開關頻率被內部設置為 700kHz 的額定頻率。TPS54326 封裝內部采用了高端和低端開關 MOSFET 以及柵極驅動器電路。MOSFET 的漏源電阻能使 TPS54326 實現高效率，并在高輸出電流的情況下幫助保持低結溫。TPS54226 還具有“自動跳過”模式，可提高輕載時的效率。TPS54326 dc/dc 同步轉換器設計用于從 (...)
用戶指南: PDF | HTML
TI.com 上無現貨
仿真模型

TPS54326 IBIS Model

SLVM731.ZIP (15 KB) - IBIS Model
下載
仿真模型

TPS54326 TINA-TI Transient Reference Design

SLVM263.TSC (211 KB) - TINA-TI Reference Design
下載
仿真模型

TPS54326 TINA-TI Transient Spice Model

SLVM264.ZIP (40 KB) - TINA-TI Spice Model
下載
仿真模型

TPS54326 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM296A.ZIP (41 KB) - PSpice Model
下載
參考設計

TIDA-010011 — 適用于保護繼電器處理器模塊的高效電源架構參考設計

該參考設計展示了各種電源架構，這些架構可為需要 >1A 負載電流和高效率的應用處理器模塊生成多個電壓軌。所需的電源通過來自背板的 5V、12V 或 24V 直流輸入生成。電源通過帶集成 FET 的直流/直流轉換器生成并且使用帶集成電感器的電源模塊以減小尺寸。此設計采用 HotRod? 封裝類型，適用于需要低 EMI 的應用，也非常適合設計時間受限的應用。其他功能包括 DDR 端接穩壓器、輸入電源 OR-ing、電壓時序控制、過載保護電子保險絲以及電壓和負載電流監控。該設計可以用于處理器、數字信號處理器和現場可編程門陣列。該設計已依照 CISPR22 標準針對輻射發射進行了測試，符合 A (...)
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
HTSSOP (PWP) 14 Ultra Librarian
VQFN (RGT) 16 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 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
  • 持續可靠性監測
包含信息：
  • 制造廠地點
  • 封裝廠地點

推薦產品可能包含與 TI 此產品相關的參數、評估模塊或參考設計。

支持和培訓

視頻