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

TPS54325

AKTIV

Synchroner Abwärtswandler, 4,5 bis 18 V Eingangsspannung, 3 A

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Datenblatt

TPS54325

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00085
Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Power good, Soft Start Adjustable, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00085
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VCC Input Voltage Range: 4.5 V to 18 V
  • Wide VIN Input Voltage Range: 2.0 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized for
    Lower Duty Cycle Applications – 120 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 Over Current Limit
  • Power Good Output
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VCC Input Voltage Range: 4.5 V to 18 V
  • Wide VIN Input Voltage Range: 2.0 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized for
    Lower Duty Cycle Applications – 120 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 Over Current Limit
  • Power Good Output

The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 device enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution.

The main control loop for the TPS54325 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS54325 also has a proprietary circuit that enables the device to adapt 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 VCC input , and from 2.0-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54325 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.

The TPS54325 device is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54325 device enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution.

The main control loop for the TPS54325 uses the D-CAP2™ mode control which provides a very fast transient response with no external components. The TPS54325 also has a proprietary circuit that enables the device to adapt 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 VCC input , and from 2.0-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54325 is available in the 14 pin HTSSOP package, and designed to operate from –40°C to 85°C.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS54325 4.5-V to 18-V, 3-A Output Synchronous Step Down Switcher with Integrated FET datasheet (Rev. F) PDF | HTML 23 Nov 2014
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 29 Aug 2023
User guide TPS54325 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 11 Okt 2021
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- 02 Jan 2013
Application note Understanding Thermal Dissipation and Design of a Heatsink 04 Mai 2011
Analog Design Journal Efficiency of synchronous versus nonsynchronous buck converters 04 Okt 2009

Design und Entwicklung

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

Evaluierungsplatine

TPS54325EVM — 5 V bis 17 V-Eingang, 3 A, Wandler – Evaluierungsmodul

The TPS54325EVM (evaluation module) is a fully assembled and tested circuit for evaluating the TPS54428 synchronous step-down converter. The EVM 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 TPS54325 uses D-CAP2™ mode control, which (...)

Benutzerhandbuch: PDF | HTML
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Simulationsmodell

TPS54325 TINA-TI Reference Design

SLVM201.TSC (168 KB) - TINA-TI Reference Design
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Simulationsmodell

TPS54325 TINA-TI Transient Spice Model

SLVM200.ZIP (40 KB) - TINA-TI Spice Model
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Simulationsmodell

TPS54325 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM285A.ZIP (41 KB) - PSpice Model
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Referenzdesigns

TIDA-010011 — Referenzdesign für hocheffiziente Stromversorgungsarchitektur für Schutzrelais-Prozessormodul

This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

PMP5411 — Universal-AC, 40 W-Set-Top-Box-Stromversorgung (1,2 V@3 A)

This reference evaluation module is an example of complete power-trees inside a set-top-box.
It performs an AC-DC conversion, then, DC-DC conversions for 1.2V/1.8V/2.5V/3.3V/5V rails.
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP8251 — Stromversorgungslösung für Xilinx FPGA Zynq 7 (1,8 V bei 0,15 A)

This reference design features multiple TPS54325 and other power devices for Xilinx Zynq FPGA. From 12-V input, this reference design has the power rails required by Zynq FPGA, including DDR3 memory.
Test report: PDF
Schaltplan: PDF
Gehäuse Pins Herunterladen
HTSSOP (PWP) 14 Optionen anzeigen
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