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DC/DC 轉換器

TPS54240

現行

具有 Eco-Mode 的 3.5V 至 42V 輸入，2.5A 降壓轉換器

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open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
LMR36520 現行 具有 26uA IQ 的 SIMPLE SWITCHER® 4.2V 至 65V、2A 同步降壓轉換器 Higher input voltage rating, easy to use SO-8 package and an FPWM option.

TPS54240

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000138 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000138 Duty cycle (max) (%) 98
HVSSOP (DGQ) 10 14.7 mm² (3 mm × 4.9 mm) VSON (DRC) 10 9 mm² (3 mm × 3 mm)
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a
    Pulse Skipping Eco-Mode™
  • 138-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start and Sequencing
  • UV and OV Power Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • 10-Pin HVSSOP and 10-Pin 3-mm x 3-mm
    VSON Packages with PowerPAD™
  • Supported by WEBENCH® Software Tool
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads With a
    Pulse Skipping Eco-Mode™
  • 138-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start and Sequencing
  • UV and OV Power Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • 10-Pin HVSSOP and 10-Pin 3-mm x 3-mm
    VSON Packages with PowerPAD™
  • Supported by WEBENCH® Software Tool

The TPS54240 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple, pulse skip mode reduces the no load, regulated output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but it can be increased using the enable pin. The output voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An open-drain power good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and optimization of external component size. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54240 is available in 10-pin, thermally-enhanced HVSSOP and 10-pin 3-mm × 3-mm PowerPAD package.

The TPS54240 device is a 42-V, 2.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple, pulse skip mode reduces the no load, regulated output supply current to 138 µA. Using the enable pin, shutdown supply current is reduced to 1.3 µA, when the enable pin is low.

Undervoltage lockout is internally set at 2.5 V, but it can be increased using the enable pin. The output voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An open-drain power good signal indicates the output is within 94% to 107% of its nominal voltage.

A wide switching frequency range allows efficiency and optimization of external component size. Frequency foldback and thermal shutdown protects the part during an overload condition.

The TPS54240 is available in 10-pin, thermally-enhanced HVSSOP and 10-pin 3-mm × 3-mm PowerPAD package.
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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 TPS54240 3.5-V to 42-V Step-Down DC - DC Converter With Eco-Mode™ datasheet (Rev. B) PDF | HTML 2014/11/24
證書 TPS54240EVM-VSON EU Declaration of Conformity (DoC) PDF | HTML 2023/12/11
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25
應用說明 Understanding Eco-mode(TM) Operation 2016/12/5
應用說明 Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications 2015/3/5
應用說明 Methods to Improve Low Dropout Operation with the TPS54240 and TPS54260 (Rev. A) 2013/11/6
應用說明 Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) 2013/9/16
應用說明 Level Shifting Control for an Inverting Buck-boost 2012/10/10

設計與開發

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開發板

TPS54240EVM-605 — 2.5A SWIFT™ 轉換器評估模組

The TPS54240 dc/dc converter is designed to provide up to a 2.5-A output from an input voltage source of 3.5V to 40V. Rated input voltage and output current range for the evaluation module are given in Table 1 of the User Guide. This evaluation module is designed to demonstrate the small, (...)
使用指南: PDF
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開發板

TPS54240EVM-VSON — 降壓轉換器評估模組

TPS54240EVM-VSON 是一款降壓式轉換器評估模組 (EVM)。  TPS54240 是具有節能模式控制的降壓轉換器，可在低負載下提供高效率。切換頻率範圍廣泛，可最佳化效率與外部元件尺寸。
使用指南: PDF | HTML
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模擬型號

TPS54240 PSpice Transient Model (Rev. A)

SLIM265B (40 KB) - PSpice 模型
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模擬型號

TPS54240 TINA-TI Transient Reference Design

SLVM271.TSC (160 KB) - TINA-TI 參考設計
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模擬型號

TPS54240 TINA-TI Transient Spice Model

SLVM272.ZIP (51 KB) - TINA-TI Spice 模型
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模擬型號

TPS54240 Unencrypted PSpice Transient Model

SLVMD00.ZIP (7 KB) - PSpice 模型
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計算工具

SLVC432 — TPS54x40 and TPS54x60 Buck Design Spreadsheet

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計算工具

SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download

The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.

This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
HVSSOP (DGQ) 10 Ultra Librarian
VSON (DRC) 10 Ultra Librarian
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