Wide input voltage buck converter solution optimized for large load steps
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This design is a non-synchronous buck converter with an input voltage range of 16 to 42V providing 14V output at 5A. It is optimized for large load steps. The IC has a Q-grade option for automotive applications.

  • TPS54540-Q1 integrates the high-side MOSFET for small solution size
  • Wide input voltage range up to 42 V
  • 146-µA operating current for high efficiency at light loads
  • Optimized to support large load steps
  • TPS54540-Q1 is AEC-Q100 qualified and rated for -40 to 150 °C operating junction temperature
  • Built and tested circuit design

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(Output Voltage 1)
Vin (Min) (V)16
Vin (Max) (V)42
Vout (Nom) (V)14
Iout (Max) (A)5
Output Power (W)70
Input TypeDC
TopologyBuck- Non Sync

TI Devices (2)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS54540  42 V, 5 A, Step-Down DC-DC Converter with Eco-Mode  Step-down (buck)  View Design Kits & Evaluation Modules
TPS54540-Q1  42V, 5A, Step-Down Regulator with Integrated High Side MOSFET  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS54540 Download
TPS54540-Q1 Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 539 10 Oct 2014
Design files (4)
Title Type Size (KB) Date
PDF 364 10 Oct 2014
PDF 158 10 Oct 2014
PDF 19 10 Oct 2014
PDF 120 10 Oct 2014

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