Reference Design - Low Noise ZETA Topology Converts 6V…22Vin to 11V@500mA


Design files


This small ZETA converter works with input voltages in the range of 6V to 32V. Thank to the ZETA topology, it is able to stabilize the output voltage to 11V, which is inside the input voltage range. A SEPIC converter might be also employed at the expense of higher output ripple voltage.

  • Very low output ripple voltage 0.14% peak-peak, 20MHz BWL
  • It is possible to use a buck evaluation module and modify it into ZETA topology
  • Design retains the advantage of the SEPIC converter and shows well clamped switch node
Output voltage options PMP10074.1
Vin (Min) (V) 32
Vin (Max) (V) 60
Vout (Nom) (V) 11
Iout (Max) (A) .5
Output Power (W) 5.5
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

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TIDU904.PDF (620 K)

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

TIDRE34.PDF (50 K)

Detailed schematic diagram for design layout and components

TIDRE35.PDF (45 K)

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

TIDRE36.PDF (158 K)

Detailed overview of design layout for component placement

TIDRE37.ZIP (39 K)

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TIDCA38.ZIP (198 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)

TPS40200Wide Input Non-Synchronous Buck DC/DC Controller

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report PMP10074 Test Results Apr. 10, 2015

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