SNVU698B September   2020  – December 2020 LMQ61460-Q1

 

  1.   1
  2.   Trademarks
  3. 1Introduction
    1. 1.1 LMQ61460-Q1 Synchronous Step-Down Voltage Converter
  4. 2Quick Start Guide
  5. 3Detailed Descriptions
  6. 4Schematic
    1. 4.1 Alternative BOM Configurations
  7. 5Board Layout
  8. 6LMQ61460EVM-400K Board Test Results
    1. 6.1 EMI
    2. 6.2 Board Efficiency
    3. 6.3 Load Regulation
    4. 6.4 Thermals
  9. 7Bill of Materials
  10. 8Revision History

Thermals

A thermal image of the IC was captured to determine rise in temp with a 5-V, 6-A load. The device was soaked for 30 minutes to obtain accurate measurement.

GUID-20200828-CA0I-P9LH-ZPMK-4V6TLMCZ2QL7-low.pngFigure 6-23 Thermal Image Capture of IC at VIN = 13.5 V, VOUT = 5 V, Load = 6 A
Note:

Thermal image captures top of case temperature. This is essentially junction temperature as the case package is very thin, resulting in low psi-jt. This demonstrates device capability of operating greater than 85°C ambient with headroom.