基于FSR2100設(shè)計的高效半橋諧振型電源技術(shù)
英飛凌汽車電子生態(tài)圈
FSR2100是高度集成的高效半橋諧振型電源控制器，可簡化設(shè)計，提高生產(chǎn)力和改善性能。FSR2100集成了帶快速恢復(fù)體二極管的功率MOSFET，高邊柵極驅(qū)動電路，精確電流控制的振蕩器，頻率限制電流，軟起動和內(nèi)置的保護功能，高達300kHz工作頻率，主要應(yīng)用在PDP和LCD TV，臺式PC和服務(wù)器，適配器，通信電源和音頻電源。
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應(yīng)用：
PDP and LCD TVs
Desktop PCs and Servers
Adapters
Telecom Power Supplies
Audio Power Supplies
圖1。FSFR2100內(nèi)部方框圖
圖2。FSFR2100典型應(yīng)用電路圖（LLC諧振半橋轉(zhuǎn)換器）
采用FSFR2100的LLC諧振半橋轉(zhuǎn)換器參考設(shè)計
參考設(shè)計主要特性：
High efficiency ( >94% at 400VDC input)
Reduced EMI noise through zero-voltage-switching (ZVS)
Enhanced system reliability with various protection functions
圖3。采用FSFR2100的LLC諧振半橋轉(zhuǎn)換器參考設(shè)計電路圖
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