On Semi 180W LCD TV电源和逆变器方案
On Semi 180 W High Voltage LCD TV Power and Integrated Inverter Supply
This reference document describes a built-and-tested, GreenPointTM solution for and LCD-TV Integrated Power Supply (LIPS) that combines the main system power with the backlight inverter. In this architecture the inverter is directly powered from a high voltage rail (HV-LIPS) to improve the system power conversion efficiency and simplify the overall architecture by eliminating a power conversion stage. In this reference design, the inverter is configured to power 12 cold cathode fluorescent lamps (CCFL). All the circuitry is resident in on a single PCB as might be found in a 32” LCD-TV. This reference design circuit consists of a single-sided 175 mm x 330 mm printed circuit board designed to fit into the chassis of a LCD-TV. The height is 25 mm.
参考设计主要指标:
Critical Design Objectives
Input Voltage: Universal input 85-265 V ac, 47-63 Hz
系统电源:..
