PFC Boost LLC Resonant Half-bridge 24V@3.5A


Design files


PMP5761 is designed for hybrid filber/coax system with nominal 40VAC-90VAC input and generate a 24V/3.5A output. A cascade PFC and LLC-SRC two stage system is applied in this design to guarantee high power factor is achieved in nominal input range. Transition mode PFC controller UCC28051 and resonant converter controller UCC25600 are applied to PFC and LLC-SRC, respectively. With PFC output set to 300V, PMP5761 is able to keep out in regulation with input up to 200VAC. 80% converter efficiency is achieved at 40VAC and 87% converter efficiency is achieved at 115VAC.

Output voltage options PMP5761.1
Vin (Min) (V) 40
Vin (Max) (V) 200
Vout (Nom) (V) 24
Iout (Max) (A) 3.5
Output Power (W) 84
Isolated/Non-Isolated Isolated
Input Type AC
Topology PFC- Boost^Half Bridge- LLC^Half Bridge- Resonant

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.

SLUU608.PDF (2222 K)

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

SLUR355.PDF (137 K)

Detailed schematic diagram for design layout and components

SLUR356.PDF (68 K)

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


Includes TI products in the design and potential alternatives.


LM293Dual differential comparator, industrial grade

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

UCC256008-pin high-performance resonant mode LLC controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Power factor correction (PFC) controllers

UCC28051Transition mode PFC controller with 12.5V/9.7V UVLO and IEC61000-3-2 compliance, -40°C to 85°C

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TL431Adjustable precision shunt regulator

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

Technical documentation

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Type Title Date
Test report PMP5761 Test Results Aug. 16, 2011

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