Part # Application Notes Power Supply And Power Management L6598 l6563 AN2331 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Reference design: 100W high performance, half bridge LLC multi-resonant SMPS with PFC


Part Details:

AN2331 Application note Reference design: 100W high performance, half bridge LLC multi-resonant SMPS with PFC Introduction This note describes the performances of a 100 W, wide-range mains, power-factor-corrected AC-DC adapter reference board (EVAL6598-100W). The peculiarities of this design are the high efficiency and the low no-load input consumption. The architecture is based on a two-stage approach: a front-end PFC pre-regulator based on the L6563 TM PFC controller and a downstream multi-resonant half-bridge converter using the L6598 resonant controller. The PFC TM operation and the top-level efficiency performance of the HB-LLC topology provide very good overall circuit efficiency. Figure 1. L6598 and L6563 100W resonant SMPS reference board June 2006 Rev 1 1/24 www.st.com Contents AN2331 Contents 1 Main characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Circuit description and test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 Efficiency measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Stand-by and No-load performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.3 Short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 Over voltage protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5 Start-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.6 Resonant stage operating waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3 Conducted emission pre-compliance test . . . . . . . . . . . . . . . . . . . . . . 13 4 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 PCB lay-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 PFC coil specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.1 PFC coil electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.2 PFC mechanical aspect and pin numbering . . . . . . . . . . . . . . . . . . . . . . . 20 7 Resonant trafo specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.1 Resonant trafo electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.2 Mechanical aspect and Pin numbering . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2/24


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Application Notes Power Supply And Power Management L6598 l6563 AN2331.pdf Datasheet