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3.5V to 42V Input, 0.5A Step-Down Converter with Eco-Mode


Models (6)

Title Category Type Date
TPS54040A Unencrypted PSpice Average Model PSpice Model ZIP 17 Sep 2018
Export TINA-TI Transient Spice Model from WEBENCH (Rev. A) TINA-TI Spice Model PDF 06 Nov 2015
TPS54040A PSpice Average Model PSpice Model ZIP 16 Jul 2013
TPS54040 TINA-TI Transient Reference Design TINA-TI Reference Design TSC 17 Nov 2010
TPS54040 TINA-TI Transient Spice Model TINA-TI Spice Model ZIP 17 Nov 2010
TPS54040 PSpice Transient Model PSpice Model ZIP 16 Jul 2009

Design kits & evaluation modules (1)

Name Part# Type
TPS54040 42V Input, 5V Output, 0.5A Evaluation Module TPS54040EVM-456 Evaluation Modules & Boards

Reference designs

Power Stage Reference Design for Power Stealing Thermostat

This TI Design provides a reference design for low cost high efficiency power stealing for low cost smart thermostats and other building automation equipment. In general, power stealing enables to extend battery life of Wi-Fi enabled smart thermostats by drawing power from 24-V AC when the HVAC load (...)

View the Important Notice for reference designs covering authorized use, intellectual property matters and disclaimers.

Description Part Number Company Tool Type
9 to 14Vin 3.3V/0.3A Buck Conv Ceramic Output Capacitor Switching @ 398kHz Reference Design PMP8715 Texas Instruments Reference designs

Software (1)

TPS54x40 and TPS54x60 Buck Design Spreadsheet (Rev. A)  (ZIP 49 KB )    12 Feb 2013  
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer TPS54040A

  Min   Max Range
Vin  V 3.5 to 42.0V
Vout  V 0.8 to 39V
Iout  A ≤ 0.5A
Ambient Temp  °C -40 to 125°C