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TPS54218

現行

2.95V 至 6V 輸入、2A 同步降壓式 SWIFT™ 轉換器

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TPS628502 現行 採用 SOT583 封裝的 2.7-V 至 6-V、2-A、可調整頻率降壓轉換器 Smaller solution size and high accuracy.

TPS54218

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 2.95 Vout (max) (V) 4.5 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00035 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 2.95 Vout (max) (V) 4.5 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00035 Duty cycle (max) (%) 98
WQFN (RTE) 16 9 mm² (3 mm × 3 mm)
  • Two, 30-mΩ (typical) MOSFETs for high-efficiency at 2-A loads
  • Switching frequency: 200 kHz to 2 MHz
  • Voltage reference over temperature: 0.8 V ±1%
  • Synchronizes to external clock
  • Adjustable soft start/sequencing
  • UV and OV power-good output
  • Low operating and shutdown quiescent current
  • Safe start-up into prebiased output
  • Cycle-by-cycle current limit, thermal and frequency foldback protection
  • Operating junction temperature range: –40°C to 150°C
  • Thermally-enhanced 3-mm × 3-mm 16-pin WQFN package
  • Create a custom design using the TPS54218 with the WEBENCH® Power Designer
  • Two, 30-mΩ (typical) MOSFETs for high-efficiency at 2-A loads
  • Switching frequency: 200 kHz to 2 MHz
  • Voltage reference over temperature: 0.8 V ±1%
  • Synchronizes to external clock
  • Adjustable soft start/sequencing
  • UV and OV power-good output
  • Low operating and shutdown quiescent current
  • Safe start-up into prebiased output
  • Cycle-by-cycle current limit, thermal and frequency foldback protection
  • Operating junction temperature range: –40°C to 150°C
  • Thermally-enhanced 3-mm × 3-mm 16-pin WQFN package
  • Create a custom design using the TPS54218 with the WEBENCH® Power Designer

TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54218 device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3-mm × 3-mm, thermally-enhanced QFN package.

The TPS54218 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

TheTPS54218 device is a full-featured, 6-V, 2-A, synchronous, step-down current-mode converter with two integrated MOSFETs.

The TPS54218 device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3-mm × 3-mm, thermally-enhanced QFN package.

The TPS54218 device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the EN pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the soft-start pin. An open-drain power-good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS54218 2.95-V to 6-V Input, 2-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. F) PDF | HTML 2020/5/4
應用說明 Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/3/25
應用說明 Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 2021/7/26
應用說明 Improving Efficiency at Higher Loads with High Switching Frequencies PDF | HTML 2021/6/16
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
應用說明 Calculating Efficiency (Rev. A) 2020/3/6
選擇指南 SWIFT DC/DC Converters Selector Guide (Rev. G) 2019/2/6
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
技術文章 How to get started with current sense amplifiers – part 2 PDF | HTML 2015/5/26
應用說明 Understanding Thermal Dissipation and Design of a Heatsink 2011/5/4
應用說明 Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 2010/9/15
EVM User's guide TPS54218EVM-511 2-A, SWIFT Regulator Evaluation Module 2009/9/23

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS54218EVM-511 — TPS54218 6V 輸入、1.8V 輸出、2A SWIFT­™ 轉換器評估模組

The TPS54218EVM-511 evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54218 regulator. The TPS54218EVM-511 is designed to provide up to 2A output current, from an input voltage of 3V to 6V (Vin start= 3.1V). The (...)
使用指南: PDF
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模擬型號

TPS54218 PSpice Average Model

SLVM507.ZIP (25 KB) - PSpice 模型
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模擬型號

TPS54218 PSpice Transient Model (Rev. B)

SLIM220A (118 KB) - PSpice 模型
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模擬型號

TPS54218 SIMPLIS Transient and Average Model

SLVMD99.ZIP (876 KB) - SIMPLIS 模型
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模擬型號

TPS54218 TINA-TI Average Reference Design

SLVM531.TSC (800 KB) - TINA-TI 參考設計
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模擬型號

TPS54218 TINA-TI Average Spice Model

SLVM530.ZIP (8 KB) - TINA-TI Spice 模型
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模擬型號

TPS54218 TINA-TI Transient Reference Design

SLVM139.TSC (193 KB) - TINA-TI 參考設計
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模擬型號

TPS54218 TINA-TI Transient Spice Model

SLVM138.ZIP (62 KB) - TINA-TI Spice 模型
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計算工具

TPS54620DESIGN-CALC — TPS54620 and TPS54XXX Current-Mode Step-Down Converter Design Calculator

The Design Calculator Plus Application Note (SLVA352A) Calculator Tool calculates the critical external component values for the TPS54620/TPS54622/TPS54521/TPS54320/TPS54618/TPS54418/TPS54318/TPS54218/TPS54319. The calculator includes power stage design, feature design and Type II and Type III (...)
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參考設計

TIDA-010057 — 超音波智慧探測器電源供應參考設計

醫學影像的顯著技術進步與高度整合，特別是手持式超音波智慧探測器，推進工程師開發出體積小巧且高效率、抗雜訊抗擾的電源解決方案。此參考設計記錄了我們具有 TX7332 傳送晶片和 AFE5832LP 接收晶片的高性能 128 通道 Tx/64 通道 Rx 超音波智慧探測器解決方案的端對端電源和資料解決方案。電源樹狀結構包括用於傳送的單級無變壓器 HV 產生（高達 +/- 80 V 且高度 <5 mm），以及來自 5V USB Type-C™ 輸入的 AFE 和 FPGA 負載點 LV。此設計可實現低雜訊（<10mV 漣波）高效電源軌，以及更出色的熱性能（溫度上升 < 10°C），實現系統效率提升 ~80%，接收資料 SNR >55dB，以及超精巧尺寸 (90mm x 45mm x 20mm)。所有電源軌皆可使用我們的整合式緩衝分壓器 CDCE949 與外部時脈同步。此設計也支援 1S 電池輸入，正常超音波運作可長達 2 小時。
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參考設計

TIDA-010269 — 手持式超音波成像裝置電源供應參考設計

此參考設計專為強化採用新一代發射器與接收器的新一代 128 通道超音波智慧探測器而打造。尺寸精巧 (80mm × 45mm × 20mm)，包含所有 128 通道智慧探測器的電源功能，且效率高於 80%。這款無變壓器高電壓電源供應器（25mA 時為 ±75V）是全新升壓穩壓器，可讓參考設計符合大多數智慧探測器應用。
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WQFN (RTE) 16 Ultra Librarian
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