Dual-channel full-bridge converter reference design (54 V @ 30 A) for PoE power sourcing (PSE)


Design files


This is a phase-shifted full-bridge converter reference design capable of delivering 1600 W of isolated output power and achieving efficiency of greater than 96%. This design uses the UCC28950 controller in a dual-phase primary/secondary configuration. An LM5017 constant on-time synchronous buck regulator provides bias power to primary and secondary-side circuits using a coupled inductor with isolated flyback winding. The isolation voltage is specified as 2250 VDC, allowing this design to be used as a system supply for Power Over Ethernet and other telecommunications applications.

Output voltage options PMP6712.1
Vin (Min) (V) 38
Vin (Max) (V) 60
Vout (Nom) (V) 54
Iout (Max) (A) 30
Output Power (W) 1620
Isolated/Non-Isolated Isolated
Input Type DC
Topology Full Bridge- Phase Shifted^POE
?? View video with transcript Video

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.

SLUUA81.PDF (4429 K)

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

SLURA08.PDF (437 K)

Detailed schematic diagram for design layout and components

SLURA07.PDF (97 K)

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

SLUC421.ZIP (390 K)

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

SLUUA88.PDF (4008 K)

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)

UCC28950Green phase-shifted full-bridge controller with Synchronous Rectification control

Data sheet: PDF | HTML
AC/DC & DC/DC converters (integrated FET)

LM50177.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator

Data sheet: PDF | HTML

LM393Dual differential comparator, commercial grade

Data sheet: PDF | HTML
Die & wafer services

LM393-MILDual Differential Comparator

Data sheet: PDF | HTML
Digital isolators

ISO7420Dual-channel, 2/0, 1-Mbps digital isolator

Data sheet: PDF | HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report PMP6712 Test Results Jan. 07, 2013

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​