3.3-V to 4.2-V input, 12-V, 60-W peak output power boost converter reference design


Design files


This reference design demonstrates two methods that connect two TPS61288 devices in parallel to support high-output power. One method is to connect the VIN, VOUT, FB and COMP pins together directly. Because the two devices share the same voltage on the COMP pin, the inductor peak current of the two devices is closed at the typical condition. However, considering the process variation at the worst condition, the output current of one device can only be 50% of the other device. Thus, the maximum average power of this method is approximately 30 W from 3.3-V to 4.2-V input, but the peak output power can be 60 W for dozens of milliseconds.

  • Input voltage of 3.3 V to 4.2 V
  • Output voltage of 12 V
  • Output current of 5 A
  • Two boost converters in parallel
  • Output power of 60 W
Output voltage options PMP40909.1
Vin (Min) (V) 3.2
Vin (Max) (V) 4.2
Vout (Nom) (V) 12
Iout (Max) (A) 5
Output Power (W) 60
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Multiphase
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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.

TIDT251A.PDF (2590 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


Detailed overview of design layout for component placement

TIDMAU0.ZIP (1111 K)

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

TIDCG98.ZIP (1421 K)

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


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

AC/DC & DC/DC converters (integrated FET)

TPS6128818-V, 15-A synchronous boost converter

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
Test report 3.3-V to 4.2-V Input, 12-V, 60-W Peak Output Power Boost Converter Ref. Des. (Rev. A) PDF | HTML Jan. 17, 2023

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