Wide input voltage SEPIC converter power supply reference design for industrial applications
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Key Document


This SEPIC converter operates over an input voltage range of 10 V - 100 V and provides a non-isolated output of 12 V/1 A. Once operating, the 12-V output supplies bias power to the control circuit, allowing operation below 10 Vin. With efficiency greater than 85%, this converter can tolerate multiple input rail ranges, allowing one converter to satisfy many applications. 

  • Full-load efficiency between 86% and 88% for input voltages from 12 V to 48 V
  • Wide input voltage range of 10 V to 100 V
  • Can be used when multiple voltage rails are available or when voltage transients are present

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(Output Voltage 1)
Vin (Min) (V)10
Vin (Max) (V)100
Vout (Nom) (V)12
Iout (Max) (A)1
Output Power (W)12
Input TypeDC
TopologySepic- CCM

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS40210-Q1  4.5V to 52V Wide Input range current mode boost controller with 700 mV reference voltage  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS40210-Q1 Download Download

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User guides (1)
Title Type Size (KB) Date
PDF 2456 07 Jan 2019
Design files (6)
Title Type Size (KB) Date
ZIP 389 07 Jan 2019
ZIP 13477 07 Jan 2019
PDF 472 07 Jan 2019
PDF 1187 07 Jan 2019
PDF 96 07 Jan 2019
PDF 116 07 Jan 2019

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