Inicio Gestión de la energía DC/DC power modules Power modules (integrated inductor)
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Gestión de la energía
DC/DC power modules
Power modules (integrated inductor)

LMZ31503

ACTIVO

Módulo de alimentación reductor de 4,5 V a 15 V, 3A en paquete QFN de 9 x 15 x 2,8 mm

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LMZ31503

ACTIVO
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Detalles del producto

Iout (max) (A) 3 Vin (max) (V) 14.5 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck, Synchronous Buck Features EMI Tested, Enable, Frequency synchronization, Power good, Remote Sense, Tracking Control mode current mode Switching frequency (max) (Hz) 780000 Switching frequency (min) (Hz) 330000
Iout (max) (A) 3 Vin (max) (V) 14.5 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck, Synchronous Buck Features EMI Tested, Enable, Frequency synchronization, Power good, Remote Sense, Tracking Control mode current mode Switching frequency (max) (Hz) 780000 Switching frequency (min) (Hz) 330000
B1QFN (RUQ) 47 135 mm² 15 x 9
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • 9 mm × 15mm × 2.8mm package
    - Pin Compatible with LMZ31506
  • 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
    - Integrated Shielded Inductor
  • Create a Custom Design Using the LMZ31503 With the WEBENCH® Power Designer
  • Complete Integrated Power Solution Allows
    Small Footprint, Low-Profile Design
  • 9 mm × 15mm × 2.8mm package
    - Pin Compatible with LMZ31506
  • 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
    - Integrated Shielded Inductor
  • Create a Custom Design Using the LMZ31503 With the WEBENCH® Power Designer

The LMZ31503 power module is an easy-to-use integrated power solution that combines a 3-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 3 external components and eliminates the loop compensation and magnetics design 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 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 LMZ31503 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 LMZ31503 power module is an easy-to-use integrated power solution that combines a 3-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 3 external components and eliminates the loop compensation and magnetics design 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 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 LMZ31503 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 Buscar otro/a Power modules (integrated inductor)
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Documentación técnica

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Tipo Título Fecha
* Data sheet LMZ31503 3-A Power Module With 4.5V-14.5V Input in QFN Package datasheet (Rev. B) 11 abr 2018
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
Application note Working With QFN Power Modules (Rev. A) 08 jun 2017
Technical article Multiphase DC/DC converters provide low ripple, integrated solution for FPGA power PDF | HTML 09 jul 2015
Application note Adjusting LMZ3 Output Voltage with LM10010/1 11 feb 2014
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

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LMZ31503EVM-692 — Placa de evaluación del módulo de alimentación reductor LMZ31503 de 4,5 V a 14,5 V, 3 A

The Texas Instruments LMZ31503EVM-692 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMZ31503 3A 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 (...)
Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

LMZ31503 PSpice Transient Model

SNVMA31.ZIP (114 KB) - PSpice Model
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Modelo de simulación

LMZ31503 Unencrypted PSpice Transient Model

SNVMA30.ZIP (7 KB) - PSpice Model
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Diseños de referencia

TIDA-00574 — Diseño de referencia de la solución de potencia de bajo ruido pequeña eficiente Xilinx Zynq de la se

The TIDA-00574 shows small solution size and high curren density & low noise power solution.  It supports internal sequencing and high output voltage accuracy.
Design guide: PDF
Esquema: PDF
Diseños de referencia

PMP10600 — Solución de alimentación Xilinx® Zynq®7000 series (XC7Z015), 5 W - Diseño de referencia

The PMP10600.1 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.  It also features one LM3880 for power up and power (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP10601 — Solución de alimentación Xilinx® Zynq® 7000 series (XC7Z015), 8 W - Diseño de referencia

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
Esquema: PDF
Diseños de referencia

PMP10613 — Diseño de referencia de 20 W de la serie Xilinx Zynq 7000 (XC7Z045)

The PMP10613 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z045)  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 (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP8610 — Diseño de referencia de alimentación para Arria V

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 (...)

Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9353 — Diseño de referencia de fuente de alimentación Altera Cyclone V SoC

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
Esquema: PDF
Diseños de referencia

PMP9365 — Solución de potencia para Altera® Stratix® V FPGA

The PMP9365 reference design provides all the power supply rails necessary to power Altera's Stratix V family of FPGAs.  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 features two (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP9444 — Diseño de referencia de solución de potencia de Xilinx Kintex UltraScale FPGA con 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
Esquema: PDF
Paquete Pasadores Descargar
B1QFN (RUQ) 47 Ver opciones
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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