AN2509广泛400W（+200 V@1.6一个/ +75 V @ 1）L6599的基于半桥LLC谐振转换器

AN2509广泛400W（+200 V@1.6一个/ +75 V @ 1）L6599的基于半桥LLC谐振转换器

AN2509
Application note
Wide range 400W (+200 V@1.6 A / +75 V@1 A)
L6599-based HB LLC resonant converter

Introduction
This note describes the performances of a 400W reference board, with wide-range mains
operation and power-factor-correction (PFC) and presents the results of its bench
evaluation. The electrical specification refers to a power supply for general purpose
application, with two main output voltages (200 V and 75 V).
The main features of this design are the very low no-load input co