LM5145EVM-HD-20A

LM5145 Wide VIN Synchronous Buck Controller High Density Evaluation Module

LM5145EVM-HD-20A

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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
Buck controllers (external switch)
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
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LM5145EVM-HD-20A — LM5145 Wide VIN Synchronous Buck Controller High Density Evaluation Module

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

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Products
Buck controllers (external switch)
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.
TI's Standard Terms and Conditions for Evaluation Items apply.

Design files

Technical documentation

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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

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