36V-72V Input 5V, 20A 95% Efficient Active Clamp Forward 1/4 Brick Power Reference Design


Design files


The PMP5364 reference design provides 5V at 20A (100W) from a standard 48V telecom input with up to 95% efficiency. This design uses the UCC2897A active clamp controller along with TI NexFET synchronous rectifiers. The low Rdson of the CSD17301Q5A reduces conduction losses and die area of the synchronous rectifiers. The circuit is built in an industry standard 1/4 brick footprint.

  • 36V-72V Input 5V/20A output (100W)
  • 95% efficiency
  • Industry Standard, Quarter Brick Footprint
  • Features UCC2897A Controller along with TI NexFET Synchronous Rectifiers
  • Active Clamp Forward Topology
  • Reduced conduction losses and die area of the synchronous rectifiers
Output voltage options PMP5364.1
Vin (Min) (V) 36
Vin (Max) (V) 72
Vout (Nom) (V) 5
Iout (Max) (A) 20
Output Power (W) 100
Isolated/Non-Isolated Isolated
Input Type DC
Topology Forward- Active Clamp^Forward- Synchronous
?? 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.

SLUU753.PDF (1900 K)

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

SLUR664.PDF (78 K)

Detailed schematic diagram for design layout and components

SLUR665.PDF (22 K)

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

SLUC322.ZIP (176 K)

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

SLUU857.PDF (139 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

N-channel MOSFETs

CSD17301Q5A30-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 3 mOhm

Data sheet: PDF
PWM controllers

UCC2897A110-V active clamp current mode PWM controller with P-channel clamp FET and line OV protection

Data sheet: PDF | HTML

Technical documentation

No results found. Please clear your search and try again.
View all 1
Type Title Date
Test report PMP5364 Test Results Nov. 11, 2011

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. ​​​​​​​​