首頁 電源管理 AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS54531

現行

具 Eco-mode 的 3.5V 至 28V 輸入、5A、570kHz 降壓轉換器

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同,但引腳輸出與所比較的裝置不同
TPS54538 現行 3.8-V 至 28-V、5-A、200-kHz 至 2.2-MHz 同步降壓轉換器 Higher efficiency and lower Iq.

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 28 Vin (min) (V) 3.5 Vout (max) (V) 25 Vout (min) (V) 0.8 Features Enable, Light-load efficiency, Soft-start fixed, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 570 Switching frequency (max) (kHz) 570 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 110 Duty cycle (max) (%) 90 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 5 Vin (max) (V) 28 Vin (min) (V) 3.5 Vout (max) (V) 25 Vout (min) (V) 0.8 Features Enable, Light-load efficiency, Soft-start fixed, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 570 Switching frequency (max) (kHz) 570 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 110 Duty cycle (max) (%) 90 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 3.5 to 28-V input voltage range
  • Adjustable output voltage down to 0.8 V
  • Integrated 80-mΩ high-side MOSFET supports up to 5-A continuous output current
  • High efficiency at light loads with a pulse skipping Eco-mode
  • Fixed 570-kHz switching frequency
  • Typical 1-µA shutdown quiescent current
  • Adjustable slow start limits inrush currents
  • Programmable UVLO threshold
  • Overvoltage transient protection
  • Cycle-by-cycle current-limit, frequency fold back, and thermal shutdown protection
  • Available in easy-to-use thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
  • Use TPS56637 for higher efficiency in a smaller package
  • Create a custom design using the TPS54531 with the WEBENCH Power Designer
  • 3.5 to 28-V input voltage range
  • Adjustable output voltage down to 0.8 V
  • Integrated 80-mΩ high-side MOSFET supports up to 5-A continuous output current
  • High efficiency at light loads with a pulse skipping Eco-mode
  • Fixed 570-kHz switching frequency
  • Typical 1-µA shutdown quiescent current
  • Adjustable slow start limits inrush currents
  • Programmable UVLO threshold
  • Overvoltage transient protection
  • Cycle-by-cycle current-limit, frequency fold back, and thermal shutdown protection
  • Available in easy-to-use thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
  • Use TPS56637 for higher efficiency in a smaller package
  • Create a custom design using the TPS54531 with the WEBENCH Power Designer

The TPS54531 device is a 28-V, 5-A non-synchronous buck converter that integrates a low R DS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54531 device is available in 8-pin SO PowerPAD integrated circuit package that has been internally optimized to improve thermal performance.

The TPS54531 device is a 28-V, 5-A non-synchronous buck converter that integrates a low R DS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54531 device is available in 8-pin SO PowerPAD integrated circuit package that has been internally optimized to improve thermal performance.

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類型 標題 日期
* Data sheet TPS54531 5-A, 28-V Input,SWIFTStep-Down Converter With Eco-mode datasheet (Rev. B) PDF | HTML 2023年 10月 10日
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021年 4月 8日
Application note Using TPS54335A to Create an Inverting Power Supply (Rev. A) 2017年 7月 19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

TPS54531EVM-530 — TPS54531 降壓 DC/DC 轉換器評估模組

The TPS54531EVM-530 is a fully assembled and tested circuit for evaluating the TPS54531 synchronous step-down SWIFT™ converter. The EVM converts a 8-V to 28-V input voltage to a regulated 5-V output voltage that delivers up to 5 A and 95.3% efficiency.

使用指南: PDF | HTML
TI.com 無法提供
開發板

USB-PD-CHG-EVM-01 — 整合式 USB Type-C® 電力傳輸 (PD) 和 2-4 芯電池 EVM 的充電參考設計

USB-PD-CHG-EVM-01 評估模組 (EVM) 可用來一起評估 BQ25798 裝置與 TPS25751 裝置。BQ25798 是採用 HOTROD (QFN) 封裝的整合式切換模式降壓升壓電池充電管理裝置,適用 3.6-24-V 輸入的 1 至 4 串聯電池芯鋰離子與鋰聚合物電池。TPS25751 為一款 USB Type-C 與 PD 控制器,可在內部供應和汲取 20-V/5-A 電流。I2C 序列介面可讓 PD 控制器驅動電池充電器,此外也可同時由主機驅動,讓此組合成為真正靈活的解決方案

TI.com 無法提供
模擬型號

TPS54531 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM872A.ZIP (309 KB) - PSpice Model
參考設計

TIDA-050047 — 整合式 USB Type-C®、USB 電力輸送和 2-4 芯電池的充電參考設計

此參考設計可在 5 A 電流下充電至 20 V,無需任何外部 FET,進而大幅縮小解決方案尺寸,並降低總 BOM 成本。此外也不需要微處理器,因為 TPS25750 電力輸送 (PD) 控制器會處理與 BQ25798 電池充電器 IC 的 I2C 通訊。此 I2C 功能與 TPS25750 Web 架構 GUI 可大幅簡化韌體開發程序。
Design guide: PDF
電路圖: PDF
參考設計

TIDEP0076 — 基於 AM572x 處理器並採用 DLP® 結構光的 3D 機器視覺參考設計

TIDEP0076 3D 機器視覺設計方案採用結構光原理,實現嵌入式 3D 掃描器。本系統結合數位相機與 Sitara™ AM57xx 處理器系統單晶片(SoC),用於擷取 DLP4500 投影器反射的光學圖案。後續的圖案處理、物體 3D 點雲計算與 3D 視覺化,皆在 AM57xx 處理器 SoC 內完成。此設計提供嵌入式解決方案,相較於基於主機 PC 的實現方式,在功耗、簡易性、成本與尺寸方面更具優勢。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-010010 — 工業 GB 乙太網路 PHY 參考設計

PLC 應用需要高速 gigabit 乙太網路介面。這可透過我們的參考設計實現,此參考設計將 DP83867IR 工業 gigabit 乙太網路實體層收發器實作至 Sitara™ AM5728 處理器內的 gigabit 乙太網路 MAC 週邊區塊。
Design guide: PDF
電路圖: PDF
參考設計

TIDEP0046 — 基於 AM57x 使用 OpenCL 進行 DSP 加速的 Monte-Carlo 模擬參考設計

TI’s high performance ARM® Cortex®-A15 based AM57x processors also integrate C66x DSPs. These DSPs were designed to handle high signal and data processing tasks that are often required by industrial, automotive and financial applications. The AM57x OpenCL implementation makes it easy (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDEP0047 — 採用 TI AM57x 處理器參考設計的電源和熱能設計考量

This is a reference design based on the AM57x processor and companion TPS659037 power management integrated circuit (PMIC).  This design specifically highlights important power and thermal design considerations and techniques for systems designed with AM57x and TPS659037.  It includes (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP30224 — 適用於智慧型放大器的工業電源參考設計

PMP30224 參考設計為 TAS2555 D 類放大器提供在 1.0A 連續 / 5.0A 峰值時 5.0V 和在 0.075A 時 1.8V 的電壓。輸入電壓範圍為 5.0V 至 38.0V。
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HSOIC (DDA) 8 Ultra Librarian

訂購與品質

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  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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