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LMZ31503

現行

採用 9x15x2.8mm QFN 封裝的 4.5V 至 15V、3A 降壓電源模組

LMZ31503

現行

產品詳細資料

Rating Catalog Topology Buck, Synchronous Buck Iout (max) (A) 3 Vin (max) (V) 14.5 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Features EMI Tested, Enable, Frequency synchronization, Power good, Remote Sense, Tracking Operating temperature range (°C) -40 to 85 Type Module Duty cycle (max) (%) 100 Control mode current mode Switching frequency (min) (kHz) 330 Switching frequency (max) (kHz) 780
Rating Catalog Topology Buck, Synchronous Buck Iout (max) (A) 3 Vin (max) (V) 14.5 Vin (min) (V) 4.5 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Features EMI Tested, Enable, Frequency synchronization, Power good, Remote Sense, Tracking Operating temperature range (°C) -40 to 85 Type Module Duty cycle (max) (%) 100 Control mode current mode Switching frequency (min) (kHz) 330 Switching frequency (max) (kHz) 780
B1QFN (RUQ) 47 135 mm² (15 mm × 9 mm)
  • 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.

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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LMZ31503 3-A Power Module With 4.5V-14.5V Input in QFN Package datasheet (Rev. B) 2018/4/11
選擇指南 Innovative DC/DC Power Modules Selection Guide (Rev. D) 2021/10/14
應用說明 Soldering Requirements for BQFN Packages (Rev. C) 2020/3/5
應用說明 Working With QFN Power Modules (Rev. A) 2017/6/8
技術文章 Multiphase DC/DC converters provide low ripple, integrated solution for FPGA power PDF | HTML 2015/7/9
應用說明 Adjusting LMZ3 Output Voltage with LM10010/1 2014/2/11
應用說明 Powering LMZ3 SIMPLE SWITCHER Power Modules From 3.3 V 2013/7/2

設計與開發

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開發板

LMZ31503EVM-692 — LMZ31503 4.5V 至 14.5V、3A 降壓式電源模組評估板

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 (...)
使用指南: PDF
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模擬型號

LMZ31503 PSpice Transient Model

SNVMA31.ZIP (114 KB) - PSpice 模型
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模擬型號

LMZ31503 Unencrypted PSpice Transient Model

SNVMA30.ZIP (7 KB) - PSpice 模型
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參考設計

PMP10600 — Xilinx® Zynq®7000 系列 (XC7Z015) 電源解決方案、5W - 參考設計

PMP10600.1 參考設計提供為 Xilinx® Zynq® 7000 系列 (XC7Z015) FPGA 供電所需的所有電源軌。   此設計使用數個 LMZ3 系列模組、LDO 和 DDR 終端穩壓器。  此外也具備一個 LM3880,可進行開機和關機排序。  此設計使用 12V 輸入。

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參考設計

PMP10601 — Xilinx® Zynq® 7000 系列 (XC7Z015) 電源解決方案、8W - 參考設計

PMP10601 參考設計提供為 Xilinx® Zynq® 7000 系列 (XC7Z015) FPGA 供電所需的所有電源軌。   此設計使用數個 LMZ3 系列模組、LDO 和 DDR 終端穩壓器,提供為 FPGA 供電所需的所有電源軌。  此外也具備一個 LM3880,可進行開機和關機排序。  此設計使用 12V 輸入。

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參考設計

TIDA-00574 — Xilinx Zynq 7000 系列 5W 小型高效率低雜訊電源解決方案參考設計

TIDA-00574 展示了小解決方案尺寸與高電流密度及低雜訊的電源解決方案。  其支援內部排序及高輸出電壓準確度。

支援產品和硬體
封裝 針腳 CAD 符號、佔位空間與 3D 模型
B1QFN (RUQ) 47 Ultra Librarian

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