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FAN7621FSCN/a9avaiController for Half-Bridge Resonant Converters


FAN7621 ,Controller for Half-Bridge Resonant ConvertersFeatures Description The FAN7621 is a pulse frequency modulation controller ƒ Variable Frequency Co ..
FAN7680 ,SECONDARY SUPERVISORY ICFeatures Description• PC Power Supply Output Monitor Circuitry The FAN7680 is a complete output sup ..
FAN7680M ,PC Power Supply Outputs Monitoring ICFeatures Description• PC Power Supply Output Monitor Circuitry The FAN7680 is a complete output sup ..
FAN7680N ,SECONDARY SUPERVISORY ICFeatures Description• PC Power Supply Output Monitor Circuitry The FAN7680 is a complete output sup ..
FAN7680N ,SECONDARY SUPERVISORY ICFAN7680PC Power Supply Outputs Monitoring IC
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FAN7621
Controller for Half-Bridge Resonant Converters
FAN7621 — PFM Controller for Half-Bridge Resonant Converters July 2010 FAN7621 PFM Controller for Half-Bridge Resonant Converters Features Description The FAN7621 is a pulse frequency modulation controller ƒ Variable Frequency Control with 50% Duty Cycle for high-efficiency half-bridge resonant converters. for Half-bridge Resonant Converter Topology Offering everything necessary to build a reliable and ƒ High Efficiency through Zero Voltage Switching (ZVS) robust resonant converter, the FAN7621 simplifies ƒ Fixed Dead Time (350ns) designs and improves productivity, while improving performance. The FAN7621 includes a high-side gate- ƒ Up to 300kHz Operating Frequency drive circuit, an accurate current controlled oscillator, ƒ Pulse Skipping for Frequency Limit (Programmable) frequency limit circuit, soft-start, and built-in protection at Light-Load Condition functions. The high-side gate-drive circuit has a ƒ Remote On/Off Control Using CON Pin common-mode noise cancellation capability, which ƒ Protection Functions: Over-Voltage Protection guarantees stable operation with excellent noise immunity. Using the zero-voltage-switching (ZVS) (OVP), Overload Protection (OLP), Over-Current technique dramatically reduces the switching losses and Protection (OCP), Abnormal Over-Current Protection efficiency is significantly improved. The ZVS also (AOCP), Internal Thermal Shutdown (TSD) reduces the switching noise noticeably, which allows a small-sized Electromagnetic Interference (EMI) filter. Applications The FAN7621 can be applied to various resonant converter topologies; such as series resonant, parallel ƒ PDP and LCD TVs resonant, and LLC resonant converters. ƒ Desktop PCs and Servers ƒ Adapters ƒ Telecom Power Supplies Related Resources ƒ Video Game Consoles AN4151 — Half-bridge LLC Resonant Converter Design TM using FSFR-series Fairchild Power Switch (FPS ) Ordering Information Operating Junction Part Number Package Packaging Method Temperature FAN7621N 16-Lead, Dual Inline Package (DIP) Tube FAN7621SJ 16-Lead, Small-Outline Package (SOP) Tube -40°C ~ 130°C FAN7621SJX 16-Lead, Small-Outline Package (SOP) Tape & Reel © 2009 FAN7621 • Rev. 1.0.3
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