98% 135W Single Phase Boost Reference Design


Design files


PMP21274 is a single-phase boost utilizing the LM5122 controller. This reference design can operate from 12V to 50V. The design has an output of 54V and capable of sourcing 2.5A continuous current. LM5112 has a bypass function where Vin is equal or greater than the set output voltage, the device will bypass Vin via the high side sync FET. Switching frequency is set to 230kHz, and a 4 layer PCB is used.

  • Synchronous rectification to improve efficiency, 98% peak efficiency
  • Low BOM count and cost, compact solution size
  • Wide Vin operation with input voltage bypass
Output voltage options PMP21274.1
Vin (Min) (V) 12
Vin (Max) (V) 50
Vout (Nom) (V) 54
Iout (Max) (A) 2.5
Output Power (W) 135
Isolated/Non-Isolated Non-Isolated
Input Type DC
Topology Boost- Synchronous
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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.

TIDUDX6.PDF (1194 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


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

TIDCE39.ZIP (443 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 controllers (external FET)

LM51223-65V Wide Vin, Current Mode Synchronous Boost Controller with Multiphase Capability

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP21274 Test Results Dec. 01, 2017

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