Part # Application Notes Power Supply And Power Management L6599 l6563 VIPER12A-E L6563A EVAL6599-200W AN2393 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Reference design: wide range 200W L6599-based HB LLC resonant converter for LCD TV & flat panels


Part Details:

AN2393 Application note Reference design: wide range 200W L6599-based HB LLC resonant converter for LCD TV & flat panels Introduction This note describes the performances of a 200 W reference board, with wide-range mains operation and power-factor-correction (PFC). Its electrical specification is tailored to a typical high-end application for LCD TV or monitor applications. The main features of this design are the very low no-load input consumption (<0.5 W) and the very high global efficiency, better than 87% at full load and nominal mains voltage (115 - 230 Vac). The circuit consists of three main blocks; the first is a front-end PFC pre-regulator based on the L6563 PFC controller. The second stage is a multi-resonant half-bridge converter whose control is implemented through the STMicroelectronics L6599 resonant controller. A further auxiliary flyback converter based on the VIPer12A-E off-line primary switcher completes the architecture. This third block is mainly intended for microprocessor supply and display power management operations. Figure 1. L6599 and L6563 200W evaluation board (EVAL6599-200W) October 2007 Rev 5 1/35 www.st.com Contents AN2393 Contents 1 Main characteristics and circuit description . . . . . . . . . . . . . . . . . . . . . 4 2 Electrical test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.1 Efficiency measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 Resonant stage operating waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.3 Stand-by and no load power consumption . . . . . . . . . . . . . . . . . . . . . . . . 14 2.4 Short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.5 Overvoltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3 Thermal tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4 Conducted emission pre-compliance test . . . . . . . . . . . . . . . . . . . . . . 20 5 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 6 PFC coil specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 6.1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 6.2 Mechanical aspect and pin numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 7 Resonant power transformer specification . . . . . . . . . . . . . . . . . . . . . 27 7.1 Electrical characteristics and mechanical aspect . . . . . . . . . . . . . . . . . . . 28 8 Auxiliary flyback power transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 8.1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9 Reference design board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 10


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Application Notes Power Supply And Power Management L6599 l6563 VIPER12A-E L6563A EVAL6599-200W AN2393.pdf Datasheet