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Single stage AC-DC auxless LLC resonant converter reference design
PMP21000
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- Single Stage AC-DC Auxless LLC Resonant Converter Reference Design
(PDF 3403 KB)
05 Nov 2018
Description
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
See the Important Notice and Disclaimer covering reference designs and other TI resources.
