LM5146-Q1-EVM12V

Synchronous buck controller evaluation module

LM5146-Q1-EVM12V

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Overview

The LM5146-Q1-EVM12V high density evaluation module (EVM) is designed to showcase the performance of the LM5146-Q1 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 15 V to 85 V to deliver a fixed 12-V output with better than 1% setpoint accuracy and currents up to 8A. By virtue of the LM5146-Q1's minimum on-time of 40ns, operation at very low duty cycle is feasible. The LM5146-Q1 offers a full suite of protection features to ensure protection of the regulator during fault conditions. These include undervoltage lockout to ensure proper operation duing voltage-sag conditions, programmable soft-start to reduce inrsuh current, hiccup-mode overcurrent protection and thermal shutdown. Precision enable, open-drain PGOOD indicator and SYNC IN /  SYNC OUT features are also provided.




Features
  • 15-V to 85-V input voltage range
  • 12-V output voltage with 1% setpoint accuracy
  • Rated for up to 8 A of load current
  • 400-kHz switching frequency
  • Resistor divider to EN/UVLO to faciltate programmable input voltage UVLO
  • Fully assembled, tested and proven PCB layout with small footprint
AC/DC & DC/DC controllers (external FET)
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 LM5146-Q1 Automotive 100-V synchronous buck DC/DC controller with wide duty-cycle range LV5144 95-V synchronous DC/DC buck controller 
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Evaluation board

LM5146-Q1-EVM12V — Synchronous buck controller evaluation module

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Calculation tool

LM25145DESIGN-CALC — LM25145 Synchronous Buck Controller Design Tool

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LM25145DESIGN-CALC LM25145 Synchronous Buck Controller Design Tool

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

LM25145 synchronous buck controller quickstart calculator

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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

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Type Title Date
* EVM User's guide LM5146-Q1EVM User's Guide 10 Aug 2018
Data sheet LM5146-Q1 100-V Synchronous Buck DC/DC Controller With Wide Duty Cycle Range datasheet (Rev. B) PDF | HTML 02 Jun 2021
Certificate LM5146-Q1-EVM12V EU Declaration of Conformity (DoC) 02 Jan 2019

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Hardware development

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

Design tools & simulation

CALCULATION TOOL
LM5146DESIGN-CALC LM5146-Q1 synchronous buck controller quickstart design tool

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