Home Power management DC/DC switching regulators Step-down (buck) regulators Buck modules (integrated inductor)
Home
Power management
DC/DC switching regulators
Step-down (buck) regulators
Buck modules (integrated inductor)

LMZ31506

ACTIVE

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

Order now
Data sheet

LMZ31506

ACTIVE
Data sheet Order now

Product details

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 Duty cycle (max) (%) 100 Topology Buck, Synchronous Buck Type Module Rating Catalog Control mode current mode
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 Duty cycle (max) (%) 100 Topology Buck, Synchronous Buck Type Module Rating Catalog Control mode current mode
B1QFN (RUQ) 47 135 mm² 15 x 9
  • 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
  • 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

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.

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.
open-in-new Find other Buck modules (integrated inductor)
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet LMZ31506 6-A Power Module, 2.95V-14.5V Input and Current Sharing datasheet (Rev. B) 11 Apr 2018
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. D) 14 Oct 2021
Application note Soldering Considerations for Power Modules (Rev. B) PDF | HTML 17 May 2021
Application note Soldering Requirements for BQFN Packages (Rev. C) 05 Mar 2020
Application note Working With QFN Power Modules (Rev. A) 08 Jun 2017
Application note Adjusting LMZ3 Output Voltage with LM10010/1 11 Feb 2014
Application note LMZ31506 Parallel Operation 02 Jul 2013
Application note Powering LMZ3 SIMPLE SWITCHER Power Modules From 3.3 V 02 Jul 2013
EVM User's guide Using the LMZ31506EVM, LMZ31503EVM, LMZ31506HEVM 02 Jul 2013

Design & development

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

Evaluation board

LMZ31506EVM-692 — LMZ31506 4.5V to 14.5V, 6A Step-Down Power Module Evaluation Board

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 (...)
User guide: PDF
Not available on TI.com
Simulation model

LMZ31506 PSpice Average Model

SLVMAF7.ZIP (96 KB) - PSpice Model
Download
Simulation model

LMZ31506 Unencrypted PSpice Average Model

SNVM790.ZIP (1 KB) - PSpice Model
Download
Simulation model

TPS84621 TINA-TI Transient Spice Model

SLVM594.ZIP (68 KB) - TINA-TI Spice Model
Download
Simulation model

TPS84621 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM558A.ZIP (60 KB) - PSpice Model
Download
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Request
Reference designs

PMP10601 — Xilinx® Zynq® 7000 series (XC7Z015) Power Solution, 8W - Reference Design

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 (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP9353 — Altera Cyclone V SoC Power Supply Reference Design

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.
Test report: PDF
Schematic: PDF
Reference designs

PMP9444 — Xilinx Kintex UltraScale FPGA Power Solution Reference Design with PMBus

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 (...)
Test report: PDF
Schematic: PDF
Package Pins Download
B1QFN (RUQ) 47 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos