Part # Application Notes Power Supply And Power Management L6599 l6563 L6563A EVAL6599-90W AN2321 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: REFERENCE DESIGN: HIGH PERFORMANCE, L6599-BASED HB-LLC ADAPTER WITH PFC FOR LAPTOP COMPUTERS


Part Details:

AN2321 Application note Reference design: high performance, L6599-based HB-LLC adapter with PFC for laptop computers Introduction This note describes the performances of a 90 W, wide-range mains, power-factor-corrected AC-DC adapter reference board. Its electrical specification is tailored on a typical hi-end portable computer power adapter. The peculiarities of this design are the very low no-load input consumption (<0.4 W) and the very high global efficiency. 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 that makes use of the new L6599 resonant controller. The Standby function of the L6599, pushing the DCDC converter upon recognition of a light load to work in burst mode and the logic dedicated to stop the PFC stage allows meeting the severe no-load consumption requirement. The PFC TM operation and the top-level efficiency performance of the HB-LLC topology provide also a very good overall efficiency of the circuit. L6599 & L6563 90W - adapter demo-board (EVAL6599-90W) May 2007 Rev 2 1/29 www.st.com Contents AN2321 Contents 1 Main characteristics and circuit description . . . . . . . . . . . . . . . . . . . . . 5 2 Test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 Efficiency measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 Resonant stage operating waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 Stand-by & no load power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 Short circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.5 Over voltage protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.6 Start-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3 Thermal tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4 Conducted emission pre-compliance test . . . . . . . . . . . . . . . . . . . . . . 17 5 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 PFC coil specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6.1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 6.2 Mechanical aspect and pin numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7 Resonant power transformer specification . . . . . . . . . . . . . . . . . . . . . 25 7.1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7.2 Mechanical aspect and Pin numbering . . . . . . . . . . . . . . . . . . . . . . . . . . 26 8 PCB lay-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28


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Application Notes Power Supply And Power Management L6599 l6563 L6563A EVAL6599-90W AN2321.pdf Datasheet