(China (Mainland))
Product Summary
The FAN7621 is a pulse frequency modulation controller for high-efficiency half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FAN7621 simplifies designs and improves productivity, while improving performance. The FAN7621 includes a high-side gatedrive circuit, an accurate current controlled oscillator, frequency limit circuit, soft-start, and built-in protection functions. The applications of the FAN7621 include PDP and LCD TVs, desktop PCs and servers, adapters, telecom power supplies and video game consoles.
Parametrics
FAN7621 absolute maximum ratings:(1)High-Side Gate Driving Voltage, VHO: HVCC V; (2)Low-Side Gate Driving Voltage, VLO: LVCC; (3)Low-Side Supply Voltage, LVCC: 25.0V; (4)HVCC to VCTR High-Side VCC Pin to Center Voltage: 25.0V; (5)Center Voltage, VCTR: 600V; (6)Control Pin Input Voltage, VCON: LVCC; (7)Current Sense (CS) Pin Input Voltage, VCS: 1.0V; (8)RT Pin Input Voltage, VRT: 5.0V.
Features
FAN7621 features: (1)Variable Frequency Control with 50% Duty Cycle for Half-bridge Resonant Converter Topology; (2)High Efficiency through Zero Voltage Switching (ZVS); (3)Fixed Dead Time (350ns); (4)Up to 300kHz Operating Frequency; (5)Pulse Skipping for Frequency Limit (Programmable at Light-Load Condition; (6)Remote On/Off Control Using CON Pin; (7)Protection Functions: Over-Voltage Protection (OVP), Overload Protection (OLP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD).
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||||||||
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 FAN7621 |
Other |
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Data Sheet |
Negotiable |
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FAN7621BSJ |
Fairchild Semiconductor |
DC/DC Switching Controllers Contr. for Half-Brdg Resonant Converters |
Data Sheet |
Negotiable |
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FAN7621N |
Fairchild Semiconductor |
Power Driver ICs Control IC of High Power FPS |
Data Sheet |
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FAN7621SJ |
Fairchild Semiconductor |
Power Driver ICs PWM Control IC for High Power FPS |
Data Sheet |
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FAN7621SJX |
Fairchild Semiconductor |
Power Driver ICs PWM Control IC for High Power FPS |
Data Sheet |
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FAN7621BSJX |
Fairchild Semiconductor |
Switching Converters, Regulators & Controllers Contr for Half-Brdg Resonant Converters |
Data Sheet |
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FAN7621SSJ |
Fairchild Semiconductor |
Switching Converters, Regulators & Controllers Contr. for Half-Brdg Resonant Converters |
Data Sheet |
Negotiable |
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FAN7621SSJX |
Fairchild Semiconductor |
Power Switch ICs - POE / LAN CONTROL IC OF FPS |
Data Sheet |
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