LMZ31506

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4.5V to 15V, 6A Step-Down Power Module in 9x15x2.8mm QFN Package

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Product details

Parameters

Iout (Max) (A) 6 Vin (Min) (V) 2.95 Vin (Max) (V) 14.5 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Soft start Adjustable Features Current Sharing, 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) 250 Switching frequency (Typ) (kHz) 500 Duty cycle (Max) (%) 100 Topology Buck, Synchronous 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
  • 9-mm × 15-mm × 2.8-mm package
    - Pin Compatible with LMZ31503
  • Efficiencies Up To 96%
  • Wide-Output Voltage Adjust
    0.6 V to 5.5 V, with 1% Reference Accuracy
  • Supports Parallel Operation for Higher Current
  • Optional Split Power Rail Allows
    Input Voltage down to 1.6 V
  • Adjustable Switching Frequency
    (250 kHz to 780 kHz)
  • Synchronizes to an External Clock
  • Adjustable Slow-Start
  • Output Voltage Sequencing / Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Output 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
    - Integrated Shielded Inductor
  • Create a Custom Design Using the LMZ31506 With the WEBENCH® Power Designer

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Description

The LMZ31506 power module is an easy-to-use integrated power solution that combines a 6-A DC-to-DC converter with power MOSFETs, a shielded inductor, and passives into a low profile, QFN package. This total power solution allows as few as three external components and eliminates the loop compensation and magnetics part selection process.

The 9×15×2.8 mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design with greater than 90% efficiency and excellent power dissipation with a thermal impedance of 13°C/W junction to ambient. The device delivers the full 6-A rated output current at 85°C ambient temperature without airflow.

The LMZ31506 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 LMZ31506 6-A Power Module, 2.95V-14.5V Input and Current Sharing datasheet (Rev. B) Apr. 11, 2018
Application notes Soldering Requirements for BQFN Packages (Rev. C) Mar. 05, 2020
Application notes Soldering Considerations for Power Modules Nov. 26, 2018
Selection guides Innovative DC/DC Power Modules Selection Guide (Rev. C) Feb. 27, 2018
Application notes Working With QFN Power Modules (Rev. A) Jun. 08, 2017
Selection guides TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Application notes Adjusting LMZ3 Output Voltage with LM10010/1 Feb. 11, 2014
Application notes LMZ31506 Parallel Operation Jul. 02, 2013
Application notes Powering LMZ3 SIMPLE SWITCHER Power Modules From 3.3 V Jul. 02, 2013
User guides Using the LMZ31506EVM, LMZ31503EVM, LMZ31506HEVM Jul. 02, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description
The Texas Instruments LMZ31506EVM-692 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMZ31506 6A power module. The output voltage can be selected from six preset values using a jumper (5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V). Solder pads and jumpers are available to (...)
Features
  • Wide-Output Voltage Adjust (0.6 V to 5.5 V), with 1% Reference Accuracy
  • Optional Split Power Rail Allows Input Voltage Down to 1.6 V
  • Adjustable Slow-Start
  • Output Voltage Sequencing / Tracking
  • Power Good Output
  • Programmable Undervoltage Lockout (UVLO)
  • Hiccup Current Limit
  • Pre-bias Output Start-up

Design tools & simulation

SIMULATION MODELS Download
SLVM558A.ZIP (60 KB) - PSpice Model
SIMULATION MODELS Download
SLVM594.ZIP (68 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVMAF7.ZIP (96 KB) - PSpice Model
SIMULATION MODELS Download
SNVM790.ZIP (1 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Xilinx® Zynq® 7000 series (XC7Z015) Power Solution, 8W - Reference Design
PMP10601 The PMP10601 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z015)  FPGA.   This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA.  It also (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Altera Cyclone V SoC Power Supply Reference Design
PMP9353 The PMP9353 reference design is a complete power solution for Altera Cyclone V SoC devices. This design uses several LMZ3 series modules , two LDOs, and a DDR termination regulator to provide all the necessary rails to power the SoC chip. This design also shows correct power-up sequencing.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Xilinx Kintex UltraScale FPGA Power Solution Reference Design with PMBus
PMP9444 The PMP9444 reference design provides all the power supply rails necessary to power Xilinx's Kintex UltraScale family of FPGAs.  It features two UCD90120A's for flexible power up and power down sequencing as well as voltage monitoring, current monitoring, and voltage margining through the (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
B1QFN (RUQ) 47 View options

Ordering & quality

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