48Vin Digital POL with 3 Outputs Reference Design


Design files


The PMP4486 is a GaN-based reference design solution for telecom and computing applications. The GaN module LMG5200 enables a high efficiency single stage conversion with an input range from 36 to 60V down to 29V, 12V and 1.0V. This design shows the benefits of a GaN based design with high integration and low switching losses. A low cost ER18 planar PCB transformer is embedded on the board. The design was achieved in a compact form factor (56mmX86mmX16mm).

  • Extra high efficiency up to 98.4%
  • High operating frequency for small size
  • Ease of design using LMG5200 GaN FET module
  • Full digital control with UCD3138A enable flexible design
  • S.R buck topology and half-bridge current-doubler
Output voltage options PMP4486.1 PMP4486.2 PMP4486.3
Vin (Min) (V) 36 36 36
Vin (Max) (V) 60 60 60
Vout (Nom) (V) 1 29 12
Iout (Max) (A) 40 10 10
Output Power (W) 40 290 120
Isolated/Non-Isolated Non-Isolated Non-Isolated Non-Isolated
Input Type DC DC DC
Topology Half Bridge- Hard Switched Buck- Synchronous Buck- 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.

TIDUCS3.PDF (1620 K)

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

TIDRP75.PDF (687 K)

Detailed schematic diagram for design layout and components

TIDRP76.PDF (146 K)

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

TIDRP77.PDF (336 K)

Detailed overview of design layout for component placement

TIDRP79.ZIP (30 K)

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

TIDCD10.ZIP (544 K)

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

TIDRP78.PDF (4771 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Analog current-sense amplifiers

INA286-14 to 80V, bi-directional current sense amplifier

Data sheet: PDF | HTML
Digital power isolated controllers

UCD3138AUCD3138A Highly Integrated Digital Controller for Isolated Power

Data sheet: PDF | HTML
Gallium nitride (GaN) ICs

LMG520080V GaN Half Bridge Power Stage

Data sheet: PDF | HTML
Half-bridge drivers

LM51131.2-A/5-A, 90-V half bridge gate driver for GaNFET

Data sheet: PDF | HTML
Isolated DC/DC converters & modules

LM5161Wide Input 4.5-V to 100-V, 1-A Synchronous Buck / Fly-Buck Converter

Data sheet: PDF | HTML
Linear & low-dropout (LDO) regulators

TLV704150-mA 24-V ultra-low-IQ low-dropout (LDO) voltage regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report PMP4486 Test Results Dec. 15, 2016

Related design resources

Reference designs

PMP4435 48Vin, 300W 1/8brick Digital Module with GaN FET Reference Design PMP4497 LMG5200 48V to 1V/40A Single Stage Converter Reference Design

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