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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS54218

現行

2.95V 至 6V 輸入、2A 同步降壓 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 Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 350 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 2.95 Vin (max) (V) 6 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2000 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 4.5 Iq (typ) (µA) 350 Duty cycle (max) (%) 98
WQFN (RTE) 16 9 mm² 3 x 3
  • 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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類型 標題 日期
* Data sheet TPS54218 2.95-V to 6-V Input, 2-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Converter datasheet (Rev. F) PDF | HTML 2020年 5月 4日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 2021年 7月 26日
Application note Improving Efficiency at Higher Loads with High Switching Frequencies PDF | HTML 2021年 6月 16日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Application note Calculating Efficiency (Rev. A) 2020年 3月 6日
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) 2019年 2月 6日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Technical article How to get started with current sense amplifiers – part 2 PDF | HTML 2015年 5月 26日
Application note Understanding Thermal Dissipation and Design of a Heatsink 2011年 5月 4日
Application note Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 2010年 9月 15日
User guide TPS54218EVM-511 2-A, SWIFT Regulator Evaluation Module 2009年 9月 23日

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 Model
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模擬型號

TPS54218 PSpice Transient Model (Rev. B)

SLIM220B.ZIP (118 KB) - PSpice Model
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模擬型號

TPS54218 SIMPLIS Transient and Average Model

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

TPS54218 TINA-TI Average Reference Design

SLVM531.TSC (800 KB) - TINA-TI Reference Design
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模擬型號

TPS54218 TINA-TI Average Spice Model

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

TPS54218 TINA-TI Transient Reference Design

SLVM139.TSC (193 KB) - TINA-TI Reference Design
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模擬型號

TPS54218 TINA-TI Transient Spice Model

SLVM138.ZIP (62 KB) - TINA-TI Spice Model
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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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產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
TPS54218 — 2.95V 至 6V 輸入、2A 同步降壓 SWIFT™ 轉換器 TPS54318 — 2.95V 至 6V 輸入、3A 同步降壓 SWIFT™ 轉換器 TPS54319 — 採用 3 mm x 3 mm QFN 封裝的 2.95 V 至 6 V 輸入、3 A、2 MHz SWIFT™ 同步降壓轉換器 TPS54320 — 4.5V 至 17V 輸入、3A 同步降壓式 SWIFT™ 轉換器 TPS54418 — 2.95V 至 6V 輸入、4A 同步降壓 SWIFT™ 轉換器 TPS54521 — 17V 輸入、5A 同步降壓轉換器 TPS54618 — 2.95V 至 6V 輸入、6A 同步降壓 SWIFT™ 轉換器 TPS54620 — 4.5-V 至 17-V、6-A 同步 SWIFT™ 降壓轉換器 TPS54622 — 具 hiccup 電流限制的 4.5V 至 17-V、6-A 同步 SWIFT™ 降壓轉換器 TPS54821 — 具 Hiccup 電流限制的 4.5V 至 17V、8A 同步降壓轉換器 TPS56921 — 具 VID 控制的 4.5-V 至 17-V、9-A 同步降壓轉換器
硬體開發
開發板
TPS54418EVM-375 — TPS54418 3.3V 輸入、1.8V 輸出、4A SWIFT™ 評估模組 TPS54620EVM-374 — TPS54620、8V 至 17V、6A SWIFT™ 轉換器評估模組
軟體
計算工具
TPS54620DESIGN-CALC — TPS54620 & TPS54XXX 電流型降壓轉換器設計導入計算機
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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

Significant technological advancements and high degree of integration in Medical imaging, especially hand-held ultrasound smart probes, are pushing engineers to come up with highly-efficient, noise immune power solutions in a small size. This reference design documents end to end power and data (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RTE) 16 Ultra Librarian
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