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DC/DC 轉換器

TPS54424

現行

4.5V 至 17V 輸入、電流模式、4A 同步 SWIFT™ 降壓轉換器

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TPS543421 現行 3.8V 至 18V 輸入、4A、200kHz 至 2.2MHz 同步降壓轉換器 Newer generation with better performance

TPS54424

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 4 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 12 Vout (min) (V) 0.6 Features Enable, Frequency synchronization, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, Tracking EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00058 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 4 Vin (max) (V) 17 Vin (min) (V) 4.5 Vout (max) (V) 12 Vout (min) (V) 0.6 Features Enable, Frequency synchronization, Power good, Prebias startup, Soft-start adjustable, Synchronous rectification, Tracking EMI features Low parasitic Hotrod packaging Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.00058 Duty cycle (max) (%) 98
VQFN-HR (RNV) 18 12.25 mm² (3.5 mm × 3.5 mm)
  • Small 3.5-mm × 3.5-mm HotRod™ QFN Package
  • Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
  • Peak Current Mode Control With Fast Transient Response
  • 200-kHz to 1.6-MHz Fixed Switching Frequency
  • Synchronizes to External Clock
  • 0.6-V Voltage Reference ±0.85% Over Temperature
  • 0.6-V to 12-V Output Voltage Range
  • Hiccup Current Limit
  • Safe Start-Up into Pre-Biased Output Voltage
  • Adjustable Soft Start and Power Sequencing
  • Adjustable Input Undervoltage Lockout
  • 3-µA Shutdown Current
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Output Overvoltage Protection
  • Non-latch Thermal Shutdown Protection
  • –40°C to 150°C Operating Junction Temperature
  • Create a Custom Design Using the TPS54424 With the WEBENCH® Power Designer
  • Small 3.5-mm × 3.5-mm HotRod™ QFN Package
  • Integrated 14.1-mΩ and 6.1-mΩ MOSFETs
  • Peak Current Mode Control With Fast Transient Response
  • 200-kHz to 1.6-MHz Fixed Switching Frequency
  • Synchronizes to External Clock
  • 0.6-V Voltage Reference ±0.85% Over Temperature
  • 0.6-V to 12-V Output Voltage Range
  • Hiccup Current Limit
  • Safe Start-Up into Pre-Biased Output Voltage
  • Adjustable Soft Start and Power Sequencing
  • Adjustable Input Undervoltage Lockout
  • 3-µA Shutdown Current
  • Power Good Output Monitor for Undervoltage and Overvoltage
  • Output Overvoltage Protection
  • Non-latch Thermal Shutdown Protection
  • –40°C to 150°C Operating Junction Temperature
  • Create a Custom Design Using the TPS54424 With the WEBENCH® Power Designer

The TPS54424 is a full-featured 17-V (19-V maximum), 4-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.

The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.

The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.

A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.

A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.

The TPS54424 is a full-featured 17-V (19-V maximum), 4-A synchronous step-down DC/DC converter in a 3.5 mm × 3.5 mm HotRod™ QFN package.

The device is optimized for small solution size through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through peak current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor footprint.

The peak current mode control simplifies the loop compensation and provides fast transient response. Cycle-by-cycle peak current limiting on the high-side and low-side sourcing current limit protects the device in overload situations. Hiccup limits MOSFET power dissipation if a short circuit or over loading fault persists.

A power good supervisor circuit monitors the regulator output. The PGOOD pin is an open-drain output and goes high impedance when the output voltage is in regulation. An internal deglitch time prevents the PGOOD pin from pulling low unless a fault has occurred.

A dedicated EN pin can be used to control the regulator on/off and adjust the input undervoltage lockout. The output voltage start-up ramp is controlled by the SS/TRK pin, which allows operation as either a standalone power supply or in tracking situations.
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具備升級功能，可直接投入使用替代所比較的裝置。
TPS54824 現行 採用 HotRod™ QFN 的 4.5-V 至 17-V、8-A 同步 SWIFT™ 降壓轉換器 Pin-to-pin version with 8-A output current.
功能相同，但針腳輸出與所比較的裝置不同。
TPS543320 現行 4-V 至 18-V、3-A 同步降壓 SWIFT™ 轉換器 Higher efficiency in a smaller solution size
功能相似於所比較的產品。
TPSM84424 現行 採用小巧 7.5 x 7.5 mm 元件封裝的 4.5V 至 17V 輸入、0.6V-10V 輸出、4A 電源模組 Module option featuring an integrated inductor.

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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 TPS54424 4.5-V to 17-V (19-V Maximum) Input, 4-A Synchronous SWIFT™ Step-Down Converter datasheet PDF | HTML 2018/1/23
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 DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications (Rev. A) PDF | HTML 2021/5/4
應用說明 Non-Isolated Point-of-Load Solutions for Tiger Lake in PC Applications (Rev. B) PDF | HTML 2021/4/29
選擇指南 Buck Converter Quick Reference Guide (Rev. B) 2021/4/8
應用說明 Non-Isolated Point-of-Load Solutions for Elkhart Lake in Industrial PC App. (Rev. A) PDF | HTML 2020/5/21
應用說明 Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 2020/1/8
應用說明 Understanding Flip Chip QFN (HotRod) and Standard QFN Performance Differences 2019/7/2
應用說明 Minimizing Output Ripple During Startup (Rev. A) 2019/5/20
應用說明 DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems 2018/12/11
應用說明 Optimizing Layout of the TPS54824 HotRod™ Package for Thermal Performance 2018/11/16
應用說明 Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 2018/8/24
應用說明 Create an Inverting Power Supply Using a Synchronous Step-Down Regulator (Rev. B) 2018/6/25
白皮書 Measuring various types of low-frequency noise in DC/DC switching converters 2018/2/1
類比設計期刊 Reducing noise on the output of a switching regulator 2018/1/4
應用說明 HotRod QFN Application Note 2014/4/9
應用說明 Ultra Small 5A, Adjustable Output Reference design using TPS54620 2010/5/21

設計與開發

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開發板

TPS54424EVM-779 — TPS54424 4A 同步 SWIFT™ 降壓型轉換器評估模組

TPS54424EVM-779 是一款 4A 同步轉換器評估模組 (EVM)。  TPS54424 是一款同步降壓轉換器，其整合兩個功率 MOSFET，可將解決方案尺寸降至最低，並在全負載時提供高效率。固定頻率峰值電流模式控制用於降低期間和按時抖動。強制連續傳導模式可將切換頻率維持在低負載時固定，並提供來往低負載的快速瞬態回應。

使用指南: PDF | HTML
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模擬型號

TPS54424 PSpice Transient Model

SLVMC62.ZIP (93 KB) - PSpice 模型
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模擬型號

TPS54424 TINA-TI Average Reference Design

SLVMCN3.TSC (153 KB) - TINA-TI 參考設計
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模擬型號

TPS54424 TINA-TI Average Spice Model

SLVMCN4.ZIP (9 KB) - TINA-TI Spice 模型
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參考設計

TIDA-01510 — 配備 DC/DC 轉換器且可提高功率密度的雙面佈線圖參考設計

此參考設計展示了設計雙面 DC/DC 佈局的正確方法，以實現更高的電源供應密度。設計指南重點介紹了常見錯誤及避免錯誤的方法，並附上測試結果，顯示在雙面佈局中正確使用 TPS54824 元件不會影響性能。若 TPS54824 降壓轉換器的 8A 輸出過高，該設計也可使用 TPS54424 裝置，這是一款 4A 引腳兼容的替代方案。
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VQFN-HR (RNV) 18 Ultra Librarian
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