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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS54328

現行

具 Eco-mode™ 的 4.5V 至 18V 輸入、3-A 同步降壓轉換器

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TPS563211 現行 採用 SOT583，具 1% 準確度、PG/SS 和 PFM/強制 PWM 的 4.2-V 至 18-V、3-A、同步降壓轉換器 Upgrade with improved performance, pricing and smaller package.

TPS54328

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 85 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Iq (typ) (µA) 800 Duty cycle (max) (%) 65
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Iq (typ) (µA) 800 Duty cycle (max) (%) 65
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 VSON (DRC) 10 9 mm² 3 x 3
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
    • 100 mΩ (High-Side) and 70 mΩ (Low-Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized for Lower Duty Cycle Applications
    • 100 mΩ (High-Side) and 70 mΩ (Low-Side)
  • High Efficiency, Less Than 10 µA at Shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle-By-Cycle Overcurrent Limit
  • Auto-Skip Eco-Mode™ for High Efficiency at Light Load

The TPS54328 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54328 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components.

The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads. Eco-mode allows the TPS54328 to maintain high efficiency during lighter load conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V input (VIN).

The output voltage can be programmed from 0.76 V to 7 V. The device also features an adjustable soft start time. The TPS54328 is available in 8-pin DDA and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.

The TPS54328 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54328 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54328 uses the D-CAP2 mode control that provides a fast transient response with no external compensation components.

The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode operation at light loads. Eco-mode allows the TPS54328 to maintain high efficiency during lighter load conditions. The TPS54328 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V input (VIN).

The output voltage can be programmed from 0.76 V to 7 V. The device also features an adjustable soft start time. The TPS54328 is available in 8-pin DDA and 10-pin DRC packages, and is designed to operate over the ambient temperature range of –40°C to 85°C.
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引腳對引腳且具備與所比較裝置相同的功能
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TPS54428 現行 具 Eco-mode™ 的 4.5V 至 18V 輸入、4-A 同步降壓 SWIFT™ 轉換器 Pin-to-pin compatible higher current product (4 A).
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技術文件

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類型 標題 日期
* Data sheet TPS54328 4.5-V to 18-V Input, 3-A Synchronous Step-Down Converter With Eco-Mode™ datasheet (Rev. D) PDF | HTML 2016年 8月 17日
User guide TPS54328 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 11日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Optimize Output Filter on D-CAP2 for Stability Improvement 2017年 6月 13日
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- 2013年 1月 2日

設計與開發

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開發板

TPS54328EVM-686 — 具有 Eco-Mode 且適用於 TPS54328 3-A 同步降壓轉換器的評估模組

The TPS54328EVM-686 is a fully assembled and tested circuit for evaluating the TPS54328 synchronous step-down converter. The TPS54328EVM-686 operates from a 4.5-V to 18-V input and provides a 1.05-V output up to 3-A load. The main control loop of TPS54328 uses D-CAP2™ control mode, which (...)

使用指南: PDF | HTML
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模擬型號

TPS54328 TINA-TI Transient Reference Design

SLVM338.TSC (652 KB) - TINA-TI Reference Design
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模擬型號

TPS54328 TINA-TI Transient Spice Model

SLVM339.ZIP (39 KB) - TINA-TI Spice Model
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模擬型號

TPS54328 Unencrypted PSPICE Transient Model Package (Rev. A)

SLVM109A.ZIP (41 KB) - PSpice Model
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HSOIC (DDA) 8 Ultra Librarian
VSON (DRC) 10 Ultra Librarian
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