Dual output SEPIC converter bias power supply reference design for solar panel applications
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Key Document


This non-isolated design supplies a regulated 3.3 V/0.5 A and an unregulated 10 V/0.1 A for solar applications.  It operates over a dual solar panel input voltage range of 7 V - 45 V and offers low cost and a compact form factor. This SEPIC converter features minimal voltage ringing on the FET for lower stress and reduced EMI.

  • Eliminates FET voltage ringing for reduced stress and EMI
  • Dual output SEPIC from single transformer provides excellent cross regulation
  • Compact size minimizes required PCB area

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(Output Voltage 1)
(Output Voltage 2)
Vin (Min) (V)77
Vin (Max) (V)4545
Vout (Nom) (V)3.310
Iout (Max) (A).5.1
Output Power (W)1.651
Input TypeDCDC
TopologySepic- CCMSepic- 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

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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 2861 17 Dec 2018
Design files (6)
Title Type Size (KB) Date
ZIP 366 17 Dec 2018
ZIP 8275 17 Dec 2018
PDF 414 17 Dec 2018
PDF 1183 17 Dec 2018
PDF 30 17 Dec 2018
PDF 108 17 Dec 2018

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