3V to 14.5V, 30A Step-Down Power Module in 15x16x5.8mm QFN Package


Product details


Iout (Max) (A) 30 Vin (Min) (V) 3 Vin (Max) (V) 14.5 Vout (Min) (V) 0.6 Vout (Max) (V) 3.6 Soft start Adjustable Features EMI Tested, Enable, Light Load Efficiency, Power Good, Remote Sense Operating temperature range (C) -40 to 85 Iq (Typ) (uA) 39000 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 850 Switching frequency (Min) (kHz) 300 Duty cycle (Max) (%) 80 Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

B4QFN (RLG) 72 240 mm² 15 x 16 open-in-new Find other Buck modules (integrated inductor)


  • Complete Integrated Power Solution;
    Smaller than a Discrete Design
  • 15 mm × 16 mm × 5.8 mm Package Size
    - Pin Compatible with LMZ31520
  • Ultra-Fast Load Step Response
  • Efficiencies Up To 96%
  • Wide-Output Voltage Adjust
    0.6 V to 3.6 V, with 1% Reference Accuracy
  • Optional Split Power Rails Allows
    Input Voltage Down to 3 V
  • Selectable Switching Frequency;
    (300 kHz to 850 kHz)
  • Selectable Slow-Start
  • Adjustable Over Current Limit
  • Power Good Output
  • Output Voltage Sequencing
  • Over Temperature Protection
  • Pre-bias Output Start-up
  • Operating Temperature Range: –40°C to 85°C
  • Enhanced Thermal Performance: 8.6°C/W
  • Meets EN55022 Class A Emissions
    - Integrated Shielded Inductor
  • Create a Custom Design Using the LMZ31530 With the WEBENCH® Power Designer
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The LMZ31530 power module is an easy-to-use integrated power solution that combines a 30-A DC/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 15 × 16 × 5.8 mm, QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design. Achieves greater than 95% efficiency, has ultra-fast load step response and excellent power dissipation capability with a thermal impedance of 8.6°C/W. The LMZ31530 offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering a wide range of ICs and systems. Advanced packaging technology affords 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
* Data sheet LMZ31530 30-A Power Module With 3-V to 14.5-V Input in QFN Package datasheet (Rev. E) Sep. 05, 2018
Application note Soldering Considerations for Power Modules (Rev. B) May 17, 2021
Application note Soldering Requirements for BQFN Packages (Rev. C) Mar. 05, 2020
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. C) Feb. 27, 2018
Technical article FPGA power made simple: design steps Nov. 20, 2017
White paper Simplify low EMI design with power modules Nov. 20, 2017
Application note Working With QFN Power Modules (Rev. A) Jun. 08, 2017
Selection guide TI Components for Aerospace and Defense Guide (Rev. E) Mar. 22, 2017
Technical article SIMPLE SWITCHER® 25th anniversary Feb. 02, 2015
User guide Using LMZ31520EVM-001, LMZ31530EVM-002 Evaluation Module (Rev. A) Jan. 13, 2014

Design & development

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

Hardware development

document-generic User guide

The LMZ31530 EVM is designed to help the user easily evaluate and test the operation and functionality of the LMZ31530 buck module. The EVM convert a 3-V to 14.5-V input voltage to a regulated 0.6-V to 3.6-V output voltage that delivers up to 30 A in a 16-mm x 15-mm QFN package. The output (...)

  • Wide operating input voltage range of 3 V to 14.5 V is ideal for 5-V or 12-V rails
  • Output voltages from 0.6 V to 3.6 V
  • Switching frequency range 300 kHz to 850 kHz
  • Control test points to use power good and inhibit features
  • Selector options to test eco-mode or FCCM operation
  • Recommended PCB layout for (...)

Design tools & simulation

SLVMA60.ZIP (106 KB) - PSpice Model
SLVMAS1A.ZIP (8 KB) - PSpice Model
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 (...)
  • 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

30A SIMPLE SWITCHER® Power Module with 3 to 14.5V Reference Design with PMBus
PMP9464 The reference design PMP9464 utilizes the LMZ31530, a 30A SIMPLE SWITCHER® Power Module. The LMZ31530 SIMPLE SWITCHER® power module is an easy-to-use integrated power solution that combines a 30-A DC/DC converter with power MOSFETs, a shielded inductor, and passives into a low profile, QFN package.


document-generic Schematic

CAD/CAE symbols

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BQFN (RLG) 72 View options

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