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Fairchild FSR2100高效半桥谐振型电源解决方案

文章出处:8gled.com作者:格烁光电发表时间:2018-07-23
武汉代孕-产后频道yTM3【真知影响人生】Fairchild 公司的FSR2100是高度集成的高效半桥谐振型电源控制器,可简化设计,提高生产力和改善性能。FSR2100集成了带快速恢复体二极管的功率MOSFET,高边栅极驱动电路,精确电流控制的振荡器,频率限制电流,软起动和内置的保护功能,高达300kHz工作频率,主要应用在PDP和LCD TV,台式PC和服务器,适配器,通信电源和音频电源。本文介绍了FSR2100主要特性,方框图,典型应用电路图(LLC谐振半桥转换器)以及采用FSFR2100的LLC谐振半桥转换器参考设计,主要特性和电路图。

The FSFR2100 is a highly integrated power switch designed for high-efficiency half-bridge resonant converters. Offering everything necessary to build a rELiable and robust resonant converter, the FSFR2100 simplifies designs and improves productivity, while improving performance. The FSFR2100 combines power MOSFETs with fast-recovery type body diodes, a highside 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长沙代孕-【助孕关切民生100%满意exVL】爱子频道 FSFR2100 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 SuperFET™s with Fast-Recovery Type Body Diode (trr=120ns)

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1。FSFR2100内部方框图

图2。FSFR2100典型应用电路图(LLC谐振半桥转换器)

采用FSFR2100的LLC谐振半桥转换器参考设计

参考设计主要特性:

High efficiency ( >94% at 400VDC input)

Reduced EMI noise through zero-voltage-switching (ZVS)

Enhanced system reliability with various protection functions

图3。采用FSFR2100的LLC谐振半桥转换器参考设计电路图

武汉代孕-产后频道yTM3【真知影响人生】 Fairchild FSR2100高效半桥谐振型电源解决方案原创编辑请注明出来http://m.newjuren.com

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