LM5145EVM-HD-20A

LM5145 Wide VIN Synchronous Buck Controller High Density Evaluation Module

LM5145EVM-HD-20A

Order now

Overview

The LM5145EVM-HD-20A high density evaluation module (EVM) is designed to showcase the performance of the LM5145 high performance, synchronous buck DC-DC buck controller with wide input voltage range. The design is packaged in a miniature footprint with low component count. It operates over a wide input voltage range of 24 V to 72 V to deliver a fixed 5-V output with better than 1% setpoint accuracy and currents up to 20A. By virtue of the LM5145's minimum on-time of 40ns, operation at very low duty cycle is feasible. The LM5145 offers a full suite of protection features to ensure protection of the regulator during fault conditions. These include undervoltage lockout to ensure proper operation during voltage-sag conditions, programmable soft-start to reduce inrush current, hiccup-mode overcurrent protection and thermal shutdown. Precision enable, open-drain PGOOD indicator and SYNC IN /  SYNC OUT features are also provided.

Features
  • 24V to 72V input voltage range
  • 5V output voltage, adjustable from 3.3V to 8V
  • Delivers up to 20A of load current
  • Free-running switching frequency of 220kHz, synchronizable to an external clock from -20% to +50%
  • Fully assembled, tested and proven PCB layout with 30-mm x 15-mm total footprint
AC/DC & DC/DC controllers (external FET)
LM25145 6V to 42V Synchronous Buck DC-DC Controller With Wide Duty Cycle Range LM5145 75V Synchronous Buck Controller With Wide Input Voltage and Duty Cycle Ranges LM5145-Q1 Automotive 75-V synchronous buck DC/DC controller with wide duty-cycle range LM5146 100-V synchronous buck DC/DC controller with wide duty-cycle range
Download View video with transcript Video

Order & start development

Evaluation board

LM5145EVM-HD-20A — LM5145 Wide VIN Synchronous Buck Controller High Density Evaluation Module

Log in to order
In stock / Out of stock
Limit:
Not available on TI.com
Calculation tool

LM5145DESIGN-CALC — LM5145 Quickstart Design Tool

Supported products & hardware
Download

LM5145DESIGN-CALC LM5145 Quickstart Design Tool

close
Latest version
Version: 01.00.00.0D
Release date: 18 Aug 2021
download LM5145 Quickstart Design Tool (zip)  — 3200 K

Checksum
Products
AC/DC & DC/DC controllers (external FET)
LM5145 75V Synchronous Buck Controller With Wide Input Voltage and Duty Cycle Ranges LM5145-Q1 Automotive 75-V synchronous buck DC/DC controller with wide duty-cycle range
Hardware development
Evaluation board
LM5145EVM-HD-20A LM5145 Wide VIN Synchronous Buck Controller High Density Evaluation Module

Release Infomation

The design resource accessed as www.ti.com/lit/zip/snvc206 or www.ti.com/lit/xx/snvc206d/snvc206d.zip has been migrated to a new user experience at www.ti.com/tool/download/SNVC206. Please update any bookmarks accordingly.
Calculation tool

LM25145DESIGN-CALC — LM25145 Synchronous Buck Controller Design Tool

Supported products & hardware
Download

LM25145DESIGN-CALC LM25145 Synchronous Buck Controller Design Tool

close
Latest version
Version: A5
Release date: 19 Sep 2024
download LM25145_quickstart_calculator_A5.xlsm  — 3247 K

LM25145 synchronous buck controller quickstart calculator

Checksum
Hardware development
Evaluation board
LM5145EVM-HD-20A LM5145 Wide VIN Synchronous Buck Controller High Density Evaluation Module LM5146-Q1-EVM12V Synchronous buck controller evaluation module

Release Infomation

Welcome to the quickstart design tool for the LM25145 synchronous buck controller. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck regulator using this controller. As such, the user can expeditiously arrive at an optimized design to meet the application requirements.

TI's Standard Terms and Conditions for Evaluation Items apply.

Design files

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 7
Type Title Date
* EVM User's guide LM5145EVM-HD-20A High Density Evaluation Module (Rev. A) 07 Jun 2017
Data sheet LM5146-Q1 100-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. B) PDF | HTML 02 Jun 2021
Data sheet LM5145 75-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. B) PDF | HTML 19 Nov 2020
Certificate LM5145EVM-HD-20A EU Declaration of Conformity (DoC) 02 Jan 2019
EVM User's guide LM5146-Q1EVM User's Guide 10 Aug 2018
Technical article Synchronous buck controller solutions support wide VIN performance and flexibility PDF | HTML 29 Jun 2017
Data sheet LM25145 6-V to 42-V Synchronous Buck DC-DC Controller With Wide Duty Cycle Range datasheet PDF | HTML 22 Jun 2017

Related design resources

Hardware development

EVALUATION BOARD
LM5146-Q1-EVM12V Synchronous buck controller evaluation module

Design tools & simulation

CALCULATION TOOL
LM5145DESIGN-CALC LM5145 Synchronous Buck Controller Design Tool

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