Adjustable output voltage, 200-W SEPIC power supply reference design


Design files


This 200-W SEPIC converter reference design supplies a non-isolated adjustable 5-V to 200-V output voltage with a maximum output current of 4 A. Output voltage is set using a 0% to 100% duty-cycle, pulse-width-modulation (PWM) input.

  • Provides 3x to 5x higher output power than traditional SEPICs
  • Achieves a peak efficiency of greater than 93% (at 100-V output, 200 W)
  • Controls the output voltage with PWM input from processor
  • Enables low-input-ripple voltage and low EMI compared to flyback converters
Output voltage options PMP22270.1
Vin (Min) (V) 38
Vin (Max) (V) 42
Vout (Nom) (V) 200
Iout (Max) (A) 1
Output Power (W) 200
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Sepic- CCM
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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.

TIDT154.PDF (3731 K)

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

TIDM416.PDF (196 K)

Detailed schematic diagram for design layout and components

TIDM417.PDF (137 K)

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

TIDM418.PDF (174 K)

Detailed overview of design layout for component placement

TIDM420.ZIP (1352 K)

Files used for 3D models or 2D drawings of IC components


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

TIDM419.PDF (961 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
* Test report Adjustable Output Voltage, 200-W SEPIC Power Supply Reference Design Jan. 16, 2020

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