SNVU910 October   2024 LMR60440-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 EVM Setup
      1. 2.1.1 Quick Start
      2. 2.1.2 Test Points
  9. 3Implementation Results
    1. 3.1 Performance Data and Results
      1. 3.1.1 Efficiency, Load Regulation, and Dropout
      2. 3.1.2 Load Transients
      3. 3.1.3 Start-Up and Shutdown
  10. 4Hardware Design Files
    1. 4.1 Schematic
    2. 4.2 Board Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1. 5.1 Trademarks

1.1 Introduction

The Texas Instruments LMR60440QEVM evaluation module helps designers evaluate the operation and performance of the LMR604x0-Q1 wide-input buck converters. The LMR60440-Q1 is an easy-to-use synchronous step-down DC/DC converter capable of delivering up to 4A of load current from an input voltage of 3V up to 36V. The LMR60440QEVM features an output voltage of 3.3V and a switching frequency of 2.2MHz that can support a load up to 4A.

The LMR60440, LMR60430, LMR60420, LMR60440-Q1, LMR60430-Q1, and LMR60420-Q1 is available in a 9-pin RAK WQFN package with preprogrammed settings to reduce component count and achieve high density designs. The LMR60440QEVM comes with the variant of the LMR604403SRAKRQ1, which allows for adjustable output voltage, external synchronization, and spread spectrum options at a fixed 2.2MHz switching frequency. See the LMR604x0-Q1 data sheet for the detailed information of all four variants of the device. The EVM uses the LMR60440-Q1 with the following features:

  • Wide input voltage range
  • Wide duty-cycle range
  • Integrated high-side and low-side power MOSFETs
  • Cycle-by-cycle overcurrent protection
  • Internal loop compensation
  • Designed for low electromagnetic interference (EMI) requirements