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AC/DC & DC/DC converters (integrated FET)

TPS54320

現行

4.5V 至 17V 輸入、3A 同步降壓 SWIFT™ 轉換器

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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

TPS54320

現行
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產品詳細資料

Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 17 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1200 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 15 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0006
Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 17 Topology Buck Type Converter Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1200 Features Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 15 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0006
VQFN (RHL) 14 12.25 mm² 3.5 x 3.5
  • Integrated 57-mΩ / 50-mΩ MOSFETs
  • Split Power Rail: 1.6 to 17 V on PVIN
  • 200-kHz to 1.2-MHz Switching Frequency
  • Synchronizes to External Clock
  • 0.8-V Voltage Reference With ±1% Accuracy
  • Low 2-µA Shutdown Quiescent Current
  • Hiccup Overcurrent Protection
  • Monotonic Start-Up into Prebiased Outputs
  • –40°C to 150°C Operating Junction Temperature Range
  • Pin-to-Pin Compatible With the TPS54620
  • Adjustable Slow Start/Power Sequencing
  • Power Good Output for Undervoltage and Overvoltage Monitoring
  • Adjustable Input Undervoltage Lockout (UVLO)
  • Supported by SwitcherPro™ Software Tool
  • For SWIFT™ Documentation and SwitcherPro, Visit www.ti.com/swift
  • Create a Custom Design Using the TPS54320 With the WEBENCH® Power Designer
  • Integrated 57-mΩ / 50-mΩ MOSFETs
  • Split Power Rail: 1.6 to 17 V on PVIN
  • 200-kHz to 1.2-MHz Switching Frequency
  • Synchronizes to External Clock
  • 0.8-V Voltage Reference With ±1% Accuracy
  • Low 2-µA Shutdown Quiescent Current
  • Hiccup Overcurrent Protection
  • Monotonic Start-Up into Prebiased Outputs
  • –40°C to 150°C Operating Junction Temperature Range
  • Pin-to-Pin Compatible With the TPS54620
  • Adjustable Slow Start/Power Sequencing
  • Power Good Output for Undervoltage and Overvoltage Monitoring
  • Adjustable Input Undervoltage Lockout (UVLO)
  • Supported by SwitcherPro™ Software Tool
  • For SWIFT™ Documentation and SwitcherPro, Visit www.ti.com/swift
  • Create a Custom Design Using the TPS54320 With the WEBENCH® Power Designer

The TPS54320 is a full-featured 17-V, 3-A synchronous step-down converter which is optimized for small designs through high efficiency and integrated high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing footprint of the inductor.

The output voltage start-up ramp is controlled by the SS/TR pin which allows operation as either a stand-alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins.

Cycle by cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. Hiccup protection is triggered if the overcurrent condition has persisted for longer than the preset time. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature. The TPS54320 is available in a 14-pin, 3.5-mm × 3.5-mm VQFN, thermally enhanced package.

The TPS54320 is a full-featured 17-V, 3-A synchronous step-down converter which is optimized for small designs through high efficiency and integrated high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing footprint of the inductor.

The output voltage start-up ramp is controlled by the SS/TR pin which allows operation as either a stand-alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins.

Cycle by cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. Hiccup protection is triggered if the overcurrent condition has persisted for longer than the preset time. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature. The TPS54320 is available in a 14-pin, 3.5-mm × 3.5-mm VQFN, thermally enhanced package.
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類型 標題 日期
* Data sheet TPS54320 4.5- to 17-V Input, 3-A Synchronous Step Down SWIFT™ Converter datasheet (Rev. C) 2018年 4月 16日
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024年 3月 25日
Application note Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part I: Filter Design for Out PDF | HTML 2024年 2月 27日
Application note Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part II: Hybrid Sense Network PDF | HTML 2024年 2月 27日
User guide TPS54320 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 11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
Application note Minimizing Output Ripple During Startup (Rev. A) 2019年 5月 20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
Application note Minimizing Output Ripple During Startup 2017年 6月 22日
White paper Minimum Power Specifications for High-Performance ADC Power-Supply Designs 2016年 3月 31日
Technical article Designing a power supply solution for pipeline ADCs – Part 2 PDF | HTML 2015年 9月 4日
Application note Output Ripple Voltage for Buck Switching Regulator (Rev. A) 2014年 10月 13日
Application note Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co 2014年 7月 11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

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

TPS54320EVM-513 — 用於 TPS54320 4.5V 至 17V 輸入、3A 同步降壓 SWIFT™ 轉換器的評估模組

The TPS54320EVM-513 is a fully assembled and tested circuit for evaluating the TPS54320 synchronous step-down SWIFT™ converter. The EVM converts a 8-V to 17-V input voltage to a regulated 3.3-V output voltage that delivers up to 3 A. The switching frequency is externally set at a nominal (...)

使用指南: PDF | HTML
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模擬型號

TPS54320 TINA-TI Average Reference Design

SLVMA70.TSC (144 KB) - TINA-TI Reference Design
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模擬型號

TPS54320 TINA-TI Average Spice Model

SLVMA69.ZIP (7 KB) - TINA-TI Spice Model
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模擬型號

TPS54320 TINA-TI Transient Reference Design

SLVM678.TSC (660 KB) - TINA-TI Reference Design
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模擬型號

TPS54320 TINA-TI Transient Spice Model

SLVM677.ZIP (51 KB) - TINA-TI Spice Model
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模擬型號

TPS54320 Unencrypted PSpice Average Model Package (Rev. A)

SLVM896A.ZIP (29 KB) - PSpice Model
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模擬型號

TPS54320 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM451A.ZIP (77 KB) - PSpice Model
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計算工具

SLVC439 — Synchronous Inverting Buck Boost Design Calculator

支援產品和硬體

支援產品和硬體

產品
AC/DC & DC/DC converters (integrated FET)
TPS54061 — 具低 IQ 的 4.7V 至 60V 輸入，200mA 同步降壓轉換器 TPS54062 — 具低 IQ 的 4.7V 至 60V 輸入，50mA 同步降壓轉換器 TPS54320 — 4.5V 至 17V 輸入、3A 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
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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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支援產品和硬體

產品
AC/DC & DC/DC converters (integrated 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 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

TIDEP0011 — 具有動態電壓調節的 C667x DSP AVS 核心 (CVDD) 電源解決方案

This reference design aims to supply the AVS core supply (CVDD) in the Keystone Multicore DSPs, mainly the C66x series. The C66x series uses SmartReflex technology to enable the DSP to control its supply voltage. In order to meet this requirement, this design combines a Synchronous Buck Converter (...)
Test report: PDF
電路圖: PDF
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