原标题：Fairchild FSFR2100 192W LCD TV电源方案

　　Fairchild公司的192W LCD TV电源方案采用FSFR系列器件FSFR2100,额定输出功率192W,输出电压24V/8A,输入电压400V,效率大于94%,具有多种保护功能以增加系统可靠性.本文介绍了FSFR2100的主要特性,功能方框图, LLC谐振半桥转换器典型应用电路以及FSFR2100评估板电路图和材料清单(BOM).

　　The FSFR-series are a highly integrated power switches designed for high-efficiency half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FSFR-series simplifies designs and improves productivity, while improving performance. The FSFR-series combines power MOSFETs with fast-recovery type body diodes, a high-side gate-drive circuit, an accurate current

　　controlled oscillator, frequency limit circuit, soft-start, and built-in protection functions. The high-side gate-drive circuit has a common-mode noise cancellation capability, which guarantees stable operation with excellent noise immunity. The fast-recovery body diode

　　of the MOSFETs improves reliability against abnormal operation conditions, while minimizing the effect of the reverse recovery. Using the zero-voltage-switching (ZVS)

　　technique dramatically reduces the switching losses and efficiency is significantly improved. The ZVS also reduces the switching noise noticeably, which allows a

　　small-sized Electromagnetic Interference (EMI) filter.

　　The FSFR-series can be applied to various resonant converter topologies such as series resonant, parallel resonant, and LLC resonant converters.

　　FSFR2100主要特性:

　　Variable Frequency Control with 50% Duty Cycle for Half-bridge Resonant Converter Topology

　　High Efficiency through Zero Voltage Switching (ZVS)

　　Internal SuperFETs with Fast-Recovery Type Body Diode (trr=120ns) for FSFR2100 and UniFETs with Fast-Recovery Type Body Diode (trr<160ns) for FSFR2000/1900/1800/1700.

　　Fixed Dead Time (350ns) Optimized for MOSFETs

　　Up to 300kHz Operating Frequency

　　Pulse Skipping for Frequency Limit (Programmable) at Light-Load Condition

　　Remote On/Off Control Using Control Pin

　　Protection Functions: Over-Voltage Protection (OVP), Over-Load Protection (OLP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD)

　　FSFR2100应用:

　　PDP and LCD TVs

　　Desktop PCs and servers

　　Adapters

　　Telecom Power Supplies

　　Audio Power Supplies

　　图.FSFR2100方框图

　　　　材料清单(BOM):