PMP21000

Single stage AC-DC auxless LLC resonant converter reference design

PMP21000

Design files

Overview

This reference design provides a 12-V/100-W output from either 120-Vac or 230-Vac input with a single LLC resonant converter stage. The bill of materials (BOM) cost of this design is highly optimized with the single-stage structure and the use of UCC256302 LLC resonant controller. High voltage startup, integrated driver, as well as burst operation that UCC256302 provided allows minimum use of discrete components and also eliminates the need of an auxiliary supply. Along with UCC24612-2 synchronous rectifier (SR) controller to optimize SR MOSFET’s conduction time, this design is able to achieve 91.7% peak efficiency at 120-Vac input and 93.1% peak efficiency at 230-Vac input.

Features
  • 120-Vac or 230-Vac input to 12-V/100-W output
  • Single-stage AC-DC converter
  • <0.3-W standby power consumption
  • Peak efficiency: 91.7% at 120-Vac and 93.1% at 230-Vac input
Output voltage options PMP21000.1
Vin (Min) (V) 102
Vin (Max) (V) 265
Vout (Nom) (V) 12
Iout (Max) (A) 8.3
Output Power (W) 99.6
Isolated/Non-Isolated Isolated
Input Type AC
Topology Half Bridge- LLC
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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.

TIDT036.PDF (3472 K)

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

TIDRXL7.PDF (178 K)

Detailed schematic diagram for design layout and components

TIDRXL8.PDF (92 K)

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

TIDRXL9.PDF (133 K)

Detailed overview of design layout for component placement

TIDRXM1.ZIP (877 K)

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

TIDCF02.ZIP (1480 K)

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

TIDRXM0.PDF (635 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

LLC controllers

UCC256302LLC resonant controller with high voltage start up enabling low standby power

Data sheet: PDF
N-channel MOSFETs

CSD18501Q5A40-V, N channel NexFET™ power MOSFET, single SON 5 mm x 6 mm, 3.2 mOhm

Data sheet: PDF | HTML
SR & load share controllers

UCC24612High-frequency multi-mode synchronous rectifier controller

Data sheet: PDF | HTML
Shunt voltage references

TLVH431A1% low-voltage wide-operating current adjustable precision shunt regulator

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report Single Stage AC-DC Auxless LLC Resonant Converter Reference Design Nov. 05, 2018

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