AN2492 is an application note about the 400W L6599-based HB LLC resonant converter for PDP application. The note describes the performance, electrical specification, circuit description and electrical test results of the converter.
The document details a wide-range mains operation power supply design featuring power-factor-correction (PFC) and high global efficiency better than 90% at full load. The circuit architecture consists of three main blocks: an L6563-based front-end PFC pre-regulator, an L6599-controlled multi-resonant half-bridge converter delivering +200 V/400 W, and a VIPer12A auxiliary flyback converter providing 7 W for microprocessor supply.
| Input mains range | 90 to 264 Vac - 45 to 65 Hz |
|---|---|
| Output voltages | 200 V @2A, [email protected], 5V@1A |
| Stand-by mains consumption | Typical 0.5 W @230 Vac |
| Overall efficiency | better than 88% at full load, 90-264 Vac |
| EMI compliance | EN55022-class B specifications |
The design describes a 400 W reference board.
It delivers 7 W for microprocessor supply and display power management operations.