36V-72V Input 3.3V/15A 92% Efficient Active Clamp Forward


Design files


The PMP5454 reference design provides 3.3V at 50W (15A) from a standard 48V telecom input with greater than 92% efficiency. This design uses the UCC2897A active clamp controller along with TI CSD16414Q5 NexFET synchronous rectifiers. All components of this design fit within a 2.3" by 0.9" (1/8 brick) area of the circuit board.

Output voltage options PMP5454.1
Vin (Min) (V) 36
Vin (Max) (V) 72
Vout (Nom) (V) 3.3
Iout (Max) (A) 15
Output Power (W) 49.5
Isolated/Non-Isolated Isolated
Input Type DC
Topology Forward- Active Clamp^Forward- Synchronous

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.

SLUU750.PDF (1363 K)

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

SLUR658.PDF (78 K)

Detailed schematic diagram for design layout and components

SLUR659.PDF (30 K)

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


Includes TI products in the design and potential alternatives.

N-channel MOSFETs

CSD16414Q525-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 2.6 mOhm

Data sheet document-pdfAcrobat PDF
PWM controllers

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

Data sheet document-pdfAcrobat PDF open-in-new HTML

Technical documentation

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Type Title Date
Test report PMP5454 Test Results Nov. 02, 2011

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