40W Synchronous ZETA Converter with Coupled-Inductor Reference Design


Design files


This coupled-inductor, 13.2V at 4A, synchronous ZETA converter achieves greater than 95% efficiency at full load. It is capable of 5A out for Vin greater than 10V. It utilizes all surface mount components, maintains a low temperature rise and is capable of high peak load transients. See PMP9581 REVC for this design with seperate inductors.

  • Fully synchronous ZETA converter
  • Transformer output current is greater than 5A when input is above 10V
  • Efficiency is greater than 95% at full load
  • Board length is approximately 70 mm
  • Test report available
Output voltage options PMP9581_REVB.1
Vin (Min) (V) 6.2
Vin (Max) (V) 16
Vout (Nom) (V) 13.2
Iout (Max) (A) 3
Output Power (W) 39.6
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Other
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDU930.PDF (1557 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers

TIDCA58.ZIP (207 K)

Design file that contains information on physical board layer of design PCB


Includes TI products in the design and potential alternatives.

Buck controllers (external switch)

LM51166-100V Wide Vin, Current Mode Synchronous Buck Controller

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N-channel MOSFETs

CSD18531Q5A60-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 4.6 mOhm

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP9581_REVB Test Results Apr. 14, 2015

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