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LMZ31530

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

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Data sheet

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TPSM846C24 ACTIVE 4.5-V to 15-V Input, 0.5-V to 2.0-V output, 35-A power module Higher current rating module offering PMBus.

LMZ31530

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck, Synchronous Buck Type Module Iout (max) (A) 30 Vin (min) (V) 3 Vin (max) (V) 14.5 Vout (min) (V) 0.6 Vout (max) (V) 3.6 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 850 Features EMI Tested, Enable, Light Load Efficiency, Power good, Remote Sense Control mode D-CAP Duty cycle (max) (%) 80
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck, Synchronous Buck Type Module Iout (max) (A) 30 Vin (min) (V) 3 Vin (max) (V) 14.5 Vout (min) (V) 0.6 Vout (max) (V) 3.6 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 850 Features EMI Tested, Enable, Light Load Efficiency, Power good, Remote Sense Control mode D-CAP Duty cycle (max) (%) 80
B4QFN (RLG) 72 240 mm² 16 x 15
  • 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
  • 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

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.

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) PDF | HTML 05 Sep 2018
Application note Soldering Considerations for Power Modules (Rev. C) PDF | HTML 14 Mar 2024
User guide LMZ315x0 Power Module Evaluation Module User's Guide (Rev. B) PDF | HTML 14 Dec 2021
Selection guide Innovative DC/DC Power Modules Selection Guide (Rev. D) 14 Oct 2021
Application note Soldering Requirements for BQFN Packages (Rev. C) 05 Mar 2020
Technical article FPGA power made simple: design steps PDF | HTML 20 Nov 2017
White paper Simplify low EMI design with power modules 20 Nov 2017
Application note Working With QFN Power Modules (Rev. A) 08 Jun 2017

Design & development

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

Evaluation board

LMZ31530EVM-002 — LMZ31530 3V to 14.5V, 30A Step-Down Power Module Evaluation Board

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 (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

LMZ31530 PSpice Transient Model

SLVMA60.ZIP (106 KB) - PSpice Model
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Simulation model

LMZ31530 Unencrypted PSpice Transient Model (Rev. A)

SLVMAS1A.ZIP (8 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
B4QFN (RLG) 72 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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