TPS54320

AKTIV

4,5V bis 17V-Eingang, 3A, Synchron-Abwärts-SWIFT™-Wandler

Eine neuere Version dieses Produkts ist verfügbar

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
TPS543320 AKTIV Synchroner SWIFT™-Abwärtswandler, 4 bis 18 V, 3 A Higher efficiency in a smaller solution size

Produktdetails

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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Technische Dokumentation

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Alle anzeigen 17
Typ Titel Datum
* Data sheet TPS54320 4.5- to 17-V Input, 3-A Synchronous Step Down SWIFT™ Converter datasheet (Rev. C) 16 Apr 2018
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 Mär 2024
Application note Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part I: Filter Design for Out PDF | HTML 27 Feb 2024
Application note Peak Current Mode Converter Secondary Stage Filter Design for Low Ripple Power – Part II: Hybrid Sense Network PDF | HTML 27 Feb 2024
User guide TPS54320 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 11 Okt 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Calculating Efficiency (Rev. A) 06 Mär 2020
Application note Minimizing Output Ripple During Startup (Rev. A) 20 Mai 2019
Selection guide SWIFT DC/DC Converters Selector Guide (Rev. G) 06 Feb 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Minimizing Output Ripple During Startup 22 Jun 2017
White paper Minimum Power Specifications for High-Performance ADC Power-Supply Designs 31 Mär 2016
Technical article Designing a power supply solution for pipeline ADCs – Part 2 PDF | HTML 04 Sep 2015
Application note Output Ripple Voltage for Buck Switching Regulator (Rev. A) 13 Okt 2014
Application note Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co 11 Jul 2014
Application note Understanding Thermal Dissipation and Design of a Heatsink 04 Mai 2011
Application note Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 15 Sep 2010

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

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Benutzerhandbuch: PDF | HTML
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SLVMA70.TSC (144 KB) - TINA-TI Reference Design
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TPS54320 TINA-TI Transient Reference Design

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Test report: PDF
Schaltplan: PDF
Gehäuse Pins Herunterladen
VQFN (RHL) 14 Optionen anzeigen

Bestellen & Qualität

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  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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