TPS84320

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4.5-V to 14.5-V Input, 3-A Synchronous Buck, Integrated Power Solution

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Product details

Parameters

Iout (Max) (A) 3 Vin (Min) (V) 4.5 Vin (Max) (V) 14.5 Vout (Min) (V) 0.8 Vout (Max) (V) 5.5 Soft start Adjustable Features EMI Tested, Enable, Frequency Synchronization, Power Good, Remote Sense, Tracking Operating temperature range (C) -40 to 85 Iq (Typ) (mA) 13.4 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 780 Switching frequency (Min) (kHz) 330 Switching frequency (Typ) (kHz) 500 Duty cycle (Max) (%) 100 Topology Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

B1QFN (RUQ) 47 135 mm² 15 x 9 open-in-new Find other Buck modules (integrated inductor)

Features

  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • Efficiencies Up To 95%
  • Wide-Output Voltage Adjust
    0.8 V to 5.5 V, with 1% Reference Accuracy
  • Optional Split Power Rail Allows
    Input Voltage Down to 1.6 V
  • Adjustable Switching Frequency
    (330 kHz to 780 kHz)
  • Synchronizes to an External Clock
  • Adjustable Slow-Start
  • Output Voltage Sequencing / Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Overcurrent Protection - Hiccup-Mode
  • Over Temperature Protection
  • Pre-bias Output Start-up
  • Operating Temperature Range: –40°C to 85°C
  • Enhanced Thermal Performance: 13°C/W
  • Meets EN55022 Class B Emissions
  • For Design Help Including SwitcherPro™ visit http://www.ti.com/TPS84320

All trademarks are the property of their respective owners.

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Description

The TPS84320RUQ is an easy-to-use integrated power solution that combines a 3-A DC/DC converter with power MOSFETs, an inductor, and passives into a low profile, BQFN package. This total power solution allows as few as 3 external components and eliminates the loop compensation and magnetics design process.

The 9×15×2.8 mm BQFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design with up to 95% efficiency and excellent power dissipation with a thermal impedance of 13°C/W junction to ambient. The device delivers the full 3-A rated output current at 85°C ambient temperature without airflow.

The TPS84320 offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering performance DSPs and FPGAs. Advanced packaging technology afford a robust and reliable power solution compatible with standard QFN mounting and testing techniques.

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Technical documentation

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Type Title Date
* Datasheet TPS84320 4.5-V to 14.5-V Input, 3-A Synchronous Buck, Integrated Power Solution datasheet (Rev. B) Apr. 10, 2018
Application notes Soldering Requirements for BQFN Packages (Rev. C) Mar. 05, 2020
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guides TI Power Reference Design for Xilinx® Artix®-7 (AC701) May 12, 2014
User guides PMP7977 User's Guide Sep. 11, 2013
Application notes AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) Apr. 23, 2013
Application notes Powering TPS84k Devices from 3.3 V Jan. 04, 2013
More literature TPS84k Integrated Power Modules Info Card (Rev. A) Aug. 28, 2012
User guides TPS84620EVM-692 6-A, Integrated Power Solution EVM (Rev. A) Aug. 24, 2011
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations Jul. 12, 2005
Application notes AN-643 EMI/RFI Board Design (Rev. B) May 03, 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

PCB LAYOUTS Download
TIDU151.PDF (6781 KB)

Reference designs

REFERENCE DESIGNS Download
Power for Altera Cyclone V (Cyclone 5) FPGA (.75V@.75A) Reference Design
PMP8571 — PMP8571 is an easy to use power solution designed using integrated inductor power modules for Altera’s Cyclone 5 FPGA. This design used TPS84621 and TPS84320 along with TPS51200 to generate 5 rails to power the FPGA.
Design files
REFERENCE DESIGNS Download
Arria V Power Reference Design
PMP8610 Power Solution Reference Design for Arria V FPGA from Altera.  This solution uses integrated inductor modules for ease of use to help design power solution for Arria V FPGA from Altera.  This design incorporate sequencing need for the PFGA as well.

Special Note

Go to the TPS84 to LMZ3 part number cross (...)

document-generic Schematic document-generic User guide
Design files
REFERENCE DESIGNS Download
Multi-output Multi-buck 20W Power Supply for Xilinx Zynq FPGA Applications Reference Design
PMP9335 PMP9335 is designed for Xilinx Zynq FPGA applications utilizing the TPS84A20 and TPS84320. This design uses an external timer to synchronize the switching frequency to 300 kHz. It also employs a controlled power up and power down sequence.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Power Solution for C667x DSP AVS Core (CVDD) with Dynamic Voltage Scaling
TIDEP0011 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Xilinx Artix 7 FPGA with PMBus Power Management Reference Design
PMP7977 The Artix 7 power management reference design board uses power modules, linear regulators, and a PMBus compliant system controller to supply all required core and auxiliary voltages needed by the FPGA, including DDR memory termination. A Digital Power graphical user interface is used to monitor the (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
B1QFN (RUQ) 47 View options

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